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CY84
ROTARY MOWER
Published 03/08

Part NO. 00771528C

OPERATOR’S MANUAL
This Operator's Manual is an integral part of the safe operation of this machine and must
be maintained with the unit at all times. READ, UNDERSTAND, and FOLLOW the Safety
and Operation Instructions contained in this manual before operating the equipment. C01Cover

RHINO

1020 S. Sangamon Ave.
Gibson City, IL 60936
800-446-5158
Email: parts@servis-rhino.com
© 2008 Alamo Group Inc.

$0.00

To the Owner/Operator/Dealer
All implements with moving parts are potentially hazardous. There is no substitute for a cautious, safe-minded
operator who recognizes the potential hazards and follows reasonable safety practices. The manufacturer has
designed this implement to be used with all its safety equipment properly attached to minimize the chance of
accidents.
BEFORE YOU START! Read the safety messages on the implement and shown in your manual. Observe the rules
of safety and common sense!

WARRANTY INFORMATION:
Read and understand the complete Warranty Statement found in this Manual. Fill out the Warranty Registration
Form in full and return it to within 30 Days. Make certain the Serial Number of the Machine is recorded on the
Warranty Card and on the Warranty Form that you retain

In order to reduce accidents and enhance the safe operation of mowers, Alamo Group Ag Division, in
cooperation with other industry manufacturers has developed the AEM/FEMA Industrial and
Agricultural Mower Safety Practices video and guide book.
The video will familiarize and instruct mower-tractor operators in safe practices when using industrial
and agricultural mowing equipment. It is important that Every Mower Operator be educated in the
operation of their mowing equipment and be able to recognize the potential hazards that can occur while
operating a mower. This video, along with the mower operator’s manual and the warning messages on the
mower, will significantly assist in this important education.
Your Authorized Alamo Ag Dealer may have shown this video and presented you a DVD Video when you
purchased your mower. If you or any mower operator have not seen this video, Watch the Video, Read
this Operator’s Manual, and Complete the Video Guidebook before operating your new mower. If you
do not understand any of the instructions included in the video or operator’s manual or if you have any
questions concerning safety of operation, contact your supervisor, dealer or Alamo Group Ag.
If you would like a VHS video tape of the video, please e-mail AEMVideo@alamo-group.com or Fax
AEM VHS Video at (830) 372-9529 or mail in a completed copy of the form on the back of this page to
AEM VHS Video 1502 E Walnut Street, Seguin, TX 78155. and request the VHS video version. Please
include your name, mailing address, mower model and serial number.
Every operator should be trained for each piece of equipment (Tractor and Mower), understand the
intended use, and the potential hazards before operating the equipment.

Alamo Group Ag. Division is willing to provide
one (1) AEM Mower Safety Practices Video
Please Send Me:

VHS Format – AEM/FEMA Mower Operator Safety Video
DVD Format – AEM/FEMA Mower Operator Safety Video
Mower Operator’s Manual
AEM Mower Operator’s Safety Manual

Requester Name

Phone:

Requester Address:
City
State
Zip Code
Mower Model:

Serial Number:

Date Purchased:

Dealer Salesperson:

Dealership Name:

Dealership Location:

Mail to:
AEM Video Services
1502 E Walnut street
Seguin, TX 78155

Or Fax to:
(830) 372-9529
Or E-mail to:
AEMVideo@alamo-group.com

TABLE OF CONTENTS
SAFETY SECTION ............................................................................................................... 1-1
Safety Messages ................................................................................................................................................ 1-2
Decal Location .................................................................................................................................................. 1-12
Decal Description .............................................................................................................................................. 1-16
Federal Laws and Regulations ......................................................................................................................... 1-23

INTRODUCTION SECTION.................................................................................................. 2-1
Attention Owner/Operator ................................................................................................................................... 2-4

ASSEMBLY SECTION ......................................................................................................... 3-1
Optional A-Frame Assembly ............................................................................................................................... 3-2
Single Tail Wheel Assembly - Lift-Type .............................................................................................................. 3-2
Dual Tail Wheel Assembly .................................................................................................................................. 3-3
Tongue ................................................................................................................................................................ 3-3
Axle ..................................................................................................................................................................... 3-4
Control Rods ....................................................................................................................................................... 3-4
Hydraulic or Manual Lift ...................................................................................................................................... 3-5
Wheels ................................................................................................................................................................ 3-5
Shields, Guards, and Deflectors ......................................................................................................................... 3-6
Chain Guard (Extra Equipment).......................................................................................................................... 3-7
Driveline Attachment ........................................................................................................................................... 3-8
Gearbox Shield Assembly................................................................................................................................... 3-8
Check Chains (Extra Equipment) for Lift-Models ................................................................................................ 3-9
Jackshaft Bearing Support Assembly ............................................................................................................... 3-10

OPERATION SECTION ........................................................................................................ 4-1
Standard Equipment and Specifications ............................................................................................................. 4-3
OPERATOR REQUIREMENTS .......................................................................................................................... 4-4
TRACTOR REQUIREMENTS............................................................................................................................. 4-5
ROPS and Seat Belt ........................................................................................................................................... 4-5
Tractor Safety Devices........................................................................................................................................ 4-5
3-Point Hitch ....................................................................................................................................................... 4-6
Front End Weight ................................................................................................................................................ 4-7
Power Take Off (PTO) ........................................................................................................................................ 4-7
GETTING ON AND OFF THE TRACTOR .......................................................................................................... 4-8
Boarding the Tractor ........................................................................................................................................... 4-8
Dismounting the Tractor...................................................................................................................................... 4-9
STARTING THE TRACTOR ............................................................................................................................. 4-10
CONNECTING THE MOWER TO THE TRACTOR .......................................................................................... 4-10
Connecting the Mower - Lift-Type ..................................................................................................................... 4-11
Connecting the Mower - Pull-Type.................................................................................................................... 4-12
SETTING THE MOWER ................................................................................................................................... 4-13
Setting Mower Height - Lift-Type ...................................................................................................................... 4-13
Setting Mowing Height - Pull-Type.................................................................................................................... 4-14
Setting Deck Pitch............................................................................................................................................. 4-15
DRIVELINE ATTACHMENT ............................................................................................................................. 4-15
Driveline Length Check ..................................................................................................................................... 4-16
PRE-OPERATION INSPECTION AND SERVICE ............................................................................................ 4-17

Tractor Pre-Operation Inspection/Service......................................................................................................... 4-18
Mower Pre-Operation Inspection/Service ......................................................................................................... 4-18
Cutting Component Inspection.......................................................................................................................... 4-21
Blade Bolt Inspection ........................................................................................................................................ 4-22
DRIVING THE TRACTOR AND IMPLEMENT .................................................................................................. 4-25
Starting the Tractor ........................................................................................................................................... 4-26
Brake and Differential Lock Setting................................................................................................................... 4-26
Raising the Mower ............................................................................................................................................ 4-27
Driving the Tractor and Mower.......................................................................................................................... 4-27
Crossing Ditches and Steep Inclines ................................................................................................................ 4-28
OPERATING THE TRACTOR AND IMPLEMENT............................................................................................ 4-29
Foreign Debris Hazards .................................................................................................................................... 4-30
Bystanders/Passersby Precautions .................................................................................................................. 4-30
Engaging the Power Take Off (PTO) ................................................................................................................ 4-31
PTO RPM and Ground Speed .......................................................................................................................... 4-32
Operating the Mower ........................................................................................................................................ 4-32
Shutting Down the Implement ........................................................................................................................... 4-36
DISCONNECTING THE MOWER FROM THE TRACTOR .............................................................................. 4-36
MOWER STORAGE ......................................................................................................................................... 4-38
TRANSPORTING THE TRACTOR AND IMPLEMENT .................................................................................... 4-38
Transporting on Public Roadways .................................................................................................................... 4-39
Hauling the Tractor and Implement................................................................................................................... 4-41
TROUBLESHOOTING GUIDE ......................................................................................................................... 4-43

MAINTENANCE SECTION................................................................................................... 5-1
Lubrication .......................................................................................................................................................... 5-2
Gearbox Lubrication............................................................................................................................................ 5-3
Tail Wheel Lubrication ........................................................................................................................................ 5-3
Driveline Lubrication ........................................................................................................................................... 5-4
Driveline Shield - Pull-Type................................................................................................................................. 5-4
Protective, Integral Shields - Lift-Type ................................................................................................................ 5-5
Slip Clutch ........................................................................................................................................................... 5-6
Seasonal Slip Clutch Maintenance ..................................................................................................................... 5-6
Blade Servicing ................................................................................................................................................... 5-7
Blade Sharpening ............................................................................................................................................... 5-7
Blade Removal.................................................................................................................................................... 5-8
Blade Carrier Removal........................................................................................................................................ 5-8
Blade Carrier Installation..................................................................................................................................... 5-8
Storage ............................................................................................................................................................... 5-9
Proper Torque For Fasteners ............................................................................................................................. 5-9

SAFETY SECTION

Safety Section 1-1
© 2008 Alamo Group Inc.

SAFETY
Safety Messages

SAFETY

A careful operator is the best operator. Safety is of primary importance to the manufacturer and should be to
the owner/operator. Most accidents can be avoided by being aware of your equipment, your surroundings, and
observing certain precautions. The first section of this manual includes a list of Safety Messages that, if
followed, will help protect the operator and bystanders from injury or death. Read and understand these Safety
Messages before assembling, operating or servicing this Implement. This equipment should only be operated
by those persons who have read the Manual, who are responsible and trained, and who know how to do so
responsibly.
The Safety Alert Symbol combined with a Signal Word, as seen below, is used throughout this
manual and on decals which are attached to the equipment. The Safety Alert Symbol means:
“ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!” The Symbol and Signal Word
are intended to warn the owner/operator of impending hazards and the degree of possible injury
faced when operating this equipment.

Practice all usual and customary safe working precautions and above all---remember safety is
up to YOU. Only YOU can prevent serious injury or death from unsafe practices.

Indicates an imminently hazardous situation that, if not avoided, WILL result in DEATH OR
VERY SERIOUS INJURY.
Indicates an imminently hazardous situation that, if not avoided, COULD result in DEATH
OR SERIOUS INJURY.
Indicates an imminently hazardous situation that, if not avoided, MAY result in MINOR
INJURY.
Identifies special instructions or procedures that, if not strictly observed, could result in
damage to, or destruction of the machine, attachments or the environment.
NOTE: Identifies points of particular interest for more efficient and convenient operation or
repair.(SG-1)

READ, UNDERSTAND, and FOLLOW the following Safety Messages. Serious injury or
death may occur unless care is taken to follow the warnings and instructions stated in the
Safety Messages. Always use good common sense to avoid hazards. (SG-2)

Si no lee ingles, pida ayuda a alguien que si lo lea para que le traduzca las
medidas de seguridad. (SG-3)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-2

SAFETY
Never operate the Tractor or Implement until you have read and
completely understand this Manual, the Tractor Operator’s Manual, and
each of the Safety Messages found in the Manual or on the Tractor and
Implement. Learn how to stop the tractor engine suddenly in an
emergency.
Never allow inexperienced or untrained personnel to
operate the Tractor and Implement without supervision. Make sure the
operator has fully read and understood the manuals prior to operation.
(SG-4)

Always maintain the safety signs in good readable condition. If the safety signs are
missing, damaged, or unreadable, obtain and install replacement safety signs immediately.
(SG-5)

Operate this Equipment only with a Tractor equipped with an approved rollover-protective system (ROPS). Always wear seat belts. Serious injury or
even death could result from falling off the tractor--particularly during a turnover
when the operator could be pinned under the ROPS. (SG-7)

Do not modify or alter this Implement. Do not permit anyone to modify or alter this
Implement, any of its components or any Implement function. (SG-8)

BEFORE leaving the tractor seat, always engage the brake and/or set
the tractor transmission in parking gear, disengage the PTO, stop the
engine, remove the key, and wait for all moving parts to stop. Place the
tractor shift lever into a low range or parking gear to prevent the tractor
from rolling. Never dismount a Tractor that is moving or while the engine
is running. Operate the Tractor controls from the tractor seat only. (SG-9)
Never allow children or other persons to ride on the Tractor or Implement.
Falling off can result in serious injury or death. (SG-10)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-3

SAFETY

Make certain that the “Slow Moving Vehicle” (SMV) sign is installed in
such a way as to be clearly visible and legible. When transporting the
Equipment use the Tractor flashing warning lights and follow all local
traffic regulations. (SG-6)

SAFETY
Never allow children to operate, ride on, or come close to the Tractor or
Implement. Usually, 16-17 year-old children who are mature and
responsible can operate the implement with adult supervision, if they
have read and understand the Operator’s Manuals, been trained in
proper operation of the tractor and Implement, and are physically large
enough to reach and operate the controls easily. (SG-11)

SAFETY

Do not mount the Tractor while the tractor is moving. Mount the Tractor
only when the Tractor and all moving parts are completely stopped. (SG-12)

Start tractor only when properly seated in the Tractor seat. Starting a
tractor in gear can result in injury or death. Read the Tractor operators
manual for proper starting instructions. (SG-13)

Never work under the Implement, the framework, or any lifted
component unless the Implement is securely supported or blocked up
to prevent sudden or inadvertent falling which could cause serious
injury or even death. (SG-14)
The operator and all support personnel should wear hard hats, safety
shoes, safety glasses, and proper hearing protection at all times for
protection from injury including injury from items that may be thrown by
the equipment. (SG-16)

PROLONGED EXPOSURE TO LOUD NOISE MAY CAUSE
PERMANENT HEARING LOSS! Tractors with or without an Implement
attached can often be noisy enough to cause permanent hearing loss.
We recommend that you always wear hearing protection if the noise in
the Operator’s position exceeds 80db. Noise over 85db over an
extended period of time will cause severe hearing loss. Noise over 90db
adjacent to the Operator over an extended period of time will cause
permanent or total hearing loss. NOTE: Hearing loss from loud noise
[from tractors, chain saws, radios, and other such sources close to the
ear] is cumulative over a lifetime without hope of natural recovery. (SG-I7)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-4

SAFETY
Periodically inspect all moving parts for wear and replace when
necessary with authorized service parts. Look for loose fasteners, worn
or broken parts, and leaky or loose fittings. Make sure all pins have
cotter pins and washers. Serious injury may occur from not maintaining
this machine in good working order. (SG-21)

Transport only at speeds where you can maintain control of the
equipment. Serious accidents and injuries can result from operating this
equipment at high speeds. Understand the Tractor and Implement and how it handles
before transporting on streets and highways. Make sure the Tractor steering and brakes
are in good condition and operate properly.
Before transporting the Tractor and Implement, determine the proper transport speeds for
you and the equipment. Make sure you abide by the following rules:
Test the tractor at a slow speed and increase the speed slowly. Apply the Brakes smoothly
to determine the stopping characteristics of the Tractor and Implement. As you increase
the speed of the Tractor the stopping distance increases.
Determine the maximum
transport speed not to exceed 20 mph (30 kph) for transporting this equipment.
Test the equipment at a slow speed in turns. Increase the speed through the turn only after
you determine that the equipment can be operated at a higher speed. Use extreme care
and reduce your speed when turning sharply to prevent the tractor and implement from
turning over. Determine the maximum turning speed for you and this equipment before
operating on roads or uneven ground.
Only transport the Tractor and Implement at the speeds which allow you to properly control
the equipment.
Be aware of the operating conditions. Do not operate the Tractor with weak or faulty brakes
or worn tires. When operating down a hill or on wet or rain slick roads, the braking distance
increases: use extreme care and reduce your speed. When operating in traffic always use
the Tractor’s flashing warning lights and reduce your speed. Be aware of traffic around you
and watch out for the other guy. (SG-19)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-5

SAFETY

Never attempt to lubricate, adjust, or remove material from the Implement while it is in
motion or while tractor engine is running. (SG-20)

SAFETY
Always read carefully and comply fully with the manufacturer’s
instructions when handling oil, solvents, cleansers, and any other
chemical agent. (SG-22)

SAFETY

Never run the Tractor engine in a closed building or without adequate ventilation. The
exhaust fumes can be hazardous to your health. (SG-23)

KEEP AWAY FROM ROTATING ELEMENTS to prevent entanglement
and possible serious injury or death. (SG-24)

Never allow children to play on or around Tractor or Implement. Children can slip or fall off
the Equipment and be injured or killed. Children can cause the Implement to shift or fall
crushing themselves or others. (SG-25)
Do not exceed the rated PTO speed for the Implement. Excessive PTO speeds can cause
Implement driveline or blade failures resulting in serious injury or death. (SG-26)

NEVER use drugs or alcohol immediately before or while operating the
Tractor and Implement.
Drugs and alcohol will affect an operator’s
alertness and coordination and therefore affect the operator’s ability to
operate the equipment safely.
Before operating the Tractor or
Implement, an operator on prescription or over-the-counter medication
must consult a medical professional regarding any side effects of the
medication that would hinder their ability to operate the Equipment safely.
NEVER knowingly allow anyone to operate this equipment when their
alertness or coordination is impaired. Serious injury or death to the
operator or others could result if the operator is under the influence of
drugs or alcohol. (SG-27)
Mow only in conditions where you have clear visibility in daylight or with adequate artificial
lighting. Never mow in darkness or foggy conditions where you cannot clearly see at least
100 yards(90 m) in front and to the sides of the tractor and mower. Make sure that you can
clearly see and identify passersby, steep slopes, ditches, drop-offs, overhead obstructions,
power lines, debris and foreign objects. If you are unable to clearly see these type of items
discontinue mowing. (SGM-1)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-6

SAFETY
There are obvious and hidden potential hazards in the operation of this
Mower. REMEMBER! This machine is often operated in heavy brush
and in heavy weeds. The Blades of this Mower can throw objects if shields are not
properly installed and maintained. Serious injury or even death may occur unless care is
taken to insure the safety of the operator, bystanders, or passersby in the area. Do not
operate this machine with anyone in the immediate area. Stop mowing if anyone is within
100 yards of mower. (SGM-2)

The rotating parts of this machine have been designed and tested for rugged use.
However, the blades could fail upon impact with heavy, solid objects such as metal guard
rails and concrete structures. Such impact could cause the broken objects to be thrown
outward at very high velocities. To reduce the possibility of property damage, serious
injury, or even death, never allow the cutting blades to contact such obstacles. (SGM-4)
Extreme care should be taken when operating near loose objects such
as gravel, rocks, wire, and other debris. Inspect the area before
mowing. Foreign objects should be removed from the site to prevent machine damage
and/or bodily injury or even death. Any objects that cannot be removed must be clearly
marked and carefully avoided by the operator. Stop mowing immediately if blades strike a
foreign object. Repair all damage and make certain rotor or blade carrier is balanced
before resuming mowing. (SGM-5)
Many varied objects, such as wire, cable, rope, or chains, can become entangled in the
operating parts of the mower head. These items could then swing outside the housing at
greater velocities than the blades. Such a situation is extremely hazardous and could result in serious injury
or even death. Inspect the cutting area for such objects before mowing. Remove any like object from the site.
Never allow the cutting blades to contact such items. (SGM-6)
Mow at the speed that you can safely operate and control the tractor and mower. The
correct mowing speed depends on terrain condition and grass type, density, and height of
cut. Normal ground speed range is from 2 to 5 mph(3-8 kph). Use slow mowing speeds when operating on
or near steep slopes, ditches, drop-offs, overhead obstructions, power lines, or when debris and foreign
objects are to be avoided. (SGM-7)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-7

SAFETY

All Safety Shields, Guards and Safety devices including (but not
limited to) - the Deflectors, Chain Guards, Steel Guards, Gearbox
Shields, PTO integral shields, and Retractable Door Shields should be used and
maintained in good working condition. All safety devices should be inspected
carefully at least daily for missing or broken components. Missing, broken, or worn
items must be replaced at once to reduce the possibility of injury or death from thrown
objects, entanglement, or blade contact. (SGM-3)

SAFETY
Avoid mowing in reverse direction when possible. Check to make sure there are no
persons behind the mower and use extreme care when mowing in reverse. Mow only at a
slow ground speed where you can safely operate and control the tractor and mower.
Never mow an area that you have not inspected and removed debris or foreign material.
(SGM-8)

SAFETY

Do not put hands or feet under mower decks. Blade Contact can result
in serious injury or even death. Stay away until all motion has stopped
and the decks are securely blocked up. (SGM-9)

Replace bent or broken blades with new blades. NEVER ATTEMPT TO STRAIGHTEN,
WELD, OR WELD HARDFACING ON BLADES SINCE THIS WILL LIKELY CRACK OR
OTHERWISE DAMAGE THE BLADE WITH SUBSEQUENT FAILURE AND POSSIBLE
SERIOUS INJURY FROM THROWN BLADES. (SGM-10)
Do not let the Blades turn when the Mower Deck is raised for any
reason, including clearance or for turning. Raising the Mower deck
exposes the Cutting Blades which creates a potentially serious hazard and could cause
serious injury or even death from objects thrown from the Blades. (SRM-7)
Never leave the Tractor and Implement unattended while the Implement is in the lifted
position. Accidental operation of lifting lever or a hydraulic failure may cause sudden drop
of unit with injury or death by crushing. To properly park the implement when disconnecting it from the tractor,
lower the stand and put the retaining pin securely in place, or put a secure support under the A-Frame. Lower
the implement carefully to the ground. Do not put hands or feet under lifted components. (S3PT-1)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-8

SAFETY
Rotary Mowers are capable under adverse conditions of throwing
objects for great distances (300 feet or more) and causing serious injury
or death. Follow safety messages carefully.
STOP MOWING IF PASSERSBY ARE WITHIN 100 YARDS UNLESS:
-Front and Rear Deflectors, Chain Guards, or Bands are installed and in good, workable
condition;
-Mower sections or Wings are running close to and parallel to the ground without exposed
Blades;

-All areas have been thoroughly inspected and all foreign material such as rocks, cans,
glass, and general debris has been removed.
NOTE: Where there are grass and weeds high enough to hide debris that could be struck
by the blades, the area should be: inspected and large debris removed, mowed at an
intermediate height, inspected, closely with any remaining debris being removed, and
mowed again at desired final height. (This will also reduce power required to mow, reduce
wear and tear on the Mower drivetrain, spread cut material better, reduce streaking, and
make the final cut more uniform). (SRM-1)
Be particularly careful when transporting the Implement with the Tractor. Turn curves or go
up hills only at a low speed and using a gradual steering angle. Rear mounted implements
move the center of gravity to the rear and remove weight from the front wheels. Make certain, by adding front
ballast, that at least 20% of the tractor’s weight is on the front wheels to prevent rearing up, loss of steering
control or Tractor tip-over. Slow down on rough or uneven surfaces to prevent loss of steering control which
could result in property damage or possible injury. Do not transport unless 3-Point lift lever is fully raised and
in the latched transport position. Dropping implement in transport can cause serious damage to the tractor
and/or Implement and possibly cause the operator or others to be injured or killed. (S3PT-2)
There are obvious and hidden potential hazards in the operation of this Implement as in all
power-driven or pulled equipment. REMEMBER! This machine is often operated in rough
terrain conditions that include tall grass, weeds, gullies, holes, slopes, hidden obstructions
and the like. Serious injury or even death may occur unless care is taken to assure the
safety of the operator and bystanders in the area. Do not operate this machine with anyone
in the immediate area. (S3PT-7)
Make sure the PTO shield, integral driveline shields, and input shields
are is installed when using PTO-driven equipment. Always replace any
shield if it is damaged or missing. (S3PT-8)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-9

SAFETY

-Passersby are outside the existing thrown-object zone;

SAFETY
Relieve hydraulic pressure prior to doing any maintenance or repair work
on the Implement. Place the Implement on the ground or securely
blocked up, disengage the PTO, and turn off the tractor engine. Push
and pull the Remote Cylinder lever in and out several times prior to
starting any maintenance or repair work. (S3PT-9)

SAFETY

The rotating parts of this machine continue to rotate even after the PTO has been turned off.
The operator should remain in his seat for 60 seconds after the brake has been set, the
PTO disengaged, the tractor turned off, and all evidence of rotation has ceased. (S3PT-10)
“Wait a minute...Save a life!”
Always disconnect the main PTO Driveline from the Tractor before performing service on
the Implement. Never work on the Implement with the tractor PTO driveline connected and
running. Rotating Parts, Blades or Drivelines could turn without warning and cause
immediate entanglement, injury or death. (S3PT-11)
Only transport the Implement behind a properly sized and equipped
Tractor which exceeds the weight of the Implement by at least 20%. DO
NOT transport the Implement behind a truck or other type of vehicle.
Never transport the Implement and another Implement connected in
tandem. Never transport the Implement at speeds over 20 MPH. (STI-6)
Follow these guidelines to reduce the risk of equipment and grass fires
while operating, servicing, and repairing the Mower and Tractor:
-Equip the Tractor with a fire extinguisher in an accesible location.
-Do Not operate the Mower on a Tractor with an underframe exhaust.
-Do Not smoke or have an open flame near the Mower and Tractor.
-Do Not drive into burning debris or freshly burnt areas.
-Ensure slip clutches are properly adjusted to prevent excessive slippage and plate heating.
-Never allow clippings or debris to collect near drivelines, slip clutches, and gearboxes.
Periodically shut down the Tractor and Mower and clean clippings and collected debris from
the mower deck. (SGM-12)

Do not mow with two machines in the same area except with Cab tractors with the windows
closed. (SGM-11)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-10

SAFETY
Replace bent or broken blades with new blades. NEVER ATTEMPT TO STRAIGHTEN,
WELD, OR WELD HARDFACING ON BLADES SINCE THIS WILL LIKELY CRACK OR
OTHERWISE DAMAGE THE BLADE WITH SUBSEQUENT FAILURE AND POSSIBLE
SERIOUS INJURY FROM THROWN BLADES. (SGM-10)

SEE YOUR RHINO DEALER
In addition to the design and configuration of this Implement, including Safety Signs and Safety Equipment,
hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper
training of personnel involved in the operation, transport, maintenance, and storage of the machine. Refer
also to Safety Messages and operation instruction in each of the appropriate sections of the Tractor and
Equipment Manuals. Pay close attention to the Safety Signs affixed to the Tractor and Equipment. (SG-18)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-11

SAFETY

PARTS INFORMATION
Rhino mowers use balanced and matched system components for blade carriers, blades, cuttershafts, knives,
knife hangers, rollers, drivetrain components, and bearings. These parts are made and tested to Rhino
specifications. Non-genuine "will fit" parts do not consistently meet these specifications. The use of “will fit”
parts may reduce mower performance, void warranties, and present a safety hazard. Use genuine Rhino
mower parts for economy and safety. (SPRM-1)

SAFETY
Decal Location
NOTE: Rhino supplies safety decals on this product to promote safe operation. Damage to the decals may
occur while in shipping, use, or reconditioning. Rhino cares about the safety of its customers, operators, and
bystanders, and will replace the safety decals on this product in the field, free of charge (Some shipping and
handling charges may apply). Contact your Rhino dealer to order replacement decals

SAFETY

Pull-Type Unit

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-12

SAFETY
PART NO.

QTY

TYPE

DESCRIPTION

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.

00749117
00756004
00756005
00756007
00756059
00756485
00756494
00760657
03200347
00764848
D114**
D103**
00763977
99101
D302
D303
00771526
nfs
00771283
1458393
00776031
00771528C
10058000
00024100
02959924

1
1
1
1
0 (1)
1
1
1
*
0 (1)
1
1
1
0 (1)
2
2
2 (3)
1
1
2
1
1
3
6
3

DANGER
DANGER
DANGER
WARNING
WARNING
DANGER
DANGER
CAUTION
REFLECT
INSTRUCT
INSTRUCT
INSTRUCT
INSTRUCT
NAME
LOGO
NAME
NAME
SER PLATE

Multi-Hazard
D/L Shield Missing -Do Not Operate
Rotating Driveline
Use/Repair Shields & Guards
Leak Detection
Blades/Thrown Objects
Driveline Hazards
Genuine Parts, Rotary
SMV
Drawbar-to-PTO adj.
1000 RPM PTO
540 RPM PTO
Notice to Owner
Rhino (2 x 7 -3/8)
Rhino (4-7/8 x 16-3/4)
Rhino (4-3/8 x 16-3/4)
CY84
CY84 Serial Plate
5 Year Gearbox Warranty
Red Reflectors
Canister, Operator’s Manual
Operator’s Manual
Bolt
Flatwasher
Locknut

12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.

REFLECT

( ) Quantities for Pull-Type Only
** 540 or 1000 RPM units only. Select correct one.
* Furnished by the tractor manufacturer.

Complete Decal Sheet
00773316

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-13

SAFETY

ITEM

SAFETY

Lift-Type Unit

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-14

SAFETY
PART NO.

QTY

TYPE

DESCRIPTION

1.
2.
3.
4.
5.
6.
6a.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.

00725746
00749117
00756005
00756004
00756494
00760657
00773723
00769736
00769737
D103
00763613
00763977
03200347
D303
D302
00771526
nfs
1458393
00776031
00771528C
10058000
00024100
02959924

1
1
1
1
1
1
1
1
1
1
1
1
*
2
2
2
1
2
1
1
3
6
3

PELIGRO
DANGER
DANGER
DANGER
DANGER
CAUTION
PELIGRO
WARNING
DANGER
INSTRUCT
INSTRUCT
INSTRUCT
REFLECT
L.NAME
LOGO
NAME
PLATE
REFLECT

Get Manual Translated
Multi-Hazard
Rotating Driveline
D/L Shield Missing -Do Not Operate
Driveline Hazards
Genuine Parts, Rotary
Rotating Driveline Translation
Use Repair Shields and Guards
Blades/Thrown Objects
540 RPM PTO
Slip Clutch
Notice to Owner
SMV Emblem
Rhino (4-3/8 x 16-3/4)
Rhino (4-7/8 x 6-1/2)
CY84
CY84 Serial Plate
Red Reflector
Canister, Operator’s Manual
Operator’s Manual
Bolt
Flatwasher
Locknut

* Furnished by the tractor manufacturer.

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-15

SAFETY

ITEM

SAFETY
Decal Description
DANGER! Multi-Hazard Decal

SAFETY

(Refer To Front Cover)

P/N 00749117
DANGER! Guard Missing, Do Not Operate. If you
see this decal, Do Not Operate the mower until the
shield has been replaced.

P/N 00756004
DANGER! Rotating Driveline Keep Away, Contact
can cause death.

P/N 00756005

WARNING! Keep all safety shielding installed,
repaired and replaced when damaged so that
machine stays in safe condition.

P/N 00756007
CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-16

SAFETY
WARNING! Never use your hand to check for oil
leaks. Always use paper or cardboard.

P/N 00756059

SAFETY

DANGER! Keep Away - Rotating Blades

P/N 00756485

DANGER! Make certain that drivelines are correct
length and are securely attached.

P/N 00756494
For safety and to guarantee optimum product
reliability always use genuine RHINO replacement
parts.

P/N 00760657

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-17

SAFETY
Slow Moving Vehicle Decal. Keep SMV reflector
clean and visible. DO NOT transport or operate
without the SMV.
Provided by Tractor Manufacturer. Replace if
missing on tractor.

SAFETY

P/N 03200347

IMPORTANT! - Required for Equal-Angle Driveline
Unit.

P/N 00764848

WARNING! Avoid Bodily Injury, Use 1000 RPM
PTO Speed Only.

P/N D114
WARNING! Avoid Bodily Injury, Use 540RPM PTO
Speed Only.

P/N D103
CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-18

SAFETY
Operator's Manual (with repair parts) and warranty
was attached to this implement during final
inspection.

SAFETY

P/N 00763977
LOGO NAME

P/N 99101
Logo Product Name: Rhino

P/N D302

Logo Product Name: Rhino

P/N D303

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-19

SAFETY
CY84 Logo

SAFETY

P/N 00771526

INFORMATION - 5 Year Gearbox Warranty

P/N 00771283

Amber Reflector. Keep reflectors clean and visible.

P/N 1458393
Peligro Translation, If you do not know how to read
English, please find someone who knows how to
read English.

P/N 00725746

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-20

SAFETY
PELIGRO! Spanish Translation for Driveline Safety

WARNING! Maintain shields and deflectors in
good condition. Failure to do so may lead to injury
or even death.

P/N 00769736
DANGER! Keep Away Thrown Objects. Inspect the
area before mowing and remove foreign material
that could become mower thrown objects.

P/N 00769737

Attention! Do not operate until all slip clutches are
properly adjust and are not frozen.

P/N 00763613

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-21

SAFETY

P/N 00773723

SAFETY
Read Operator’s Manual! The operator’s manual is
located inside this canister. If the manual is
missing order one from your dealer.

SAFETY

P/N 00776031

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-22

SAFETY
Federal Laws and Regulations
This section is intended to explain in broad terms the concept and effect of federal laws and regulations
concerning employer and employee equipment operators. This section is not intended as a legal
interpretation of the law and should not be considered as such.
Employer-Employee Operator Regulations
U.S. Public Law 91-596 (The Williams-Steiger Occupational and Health Act of 1970) OSHA
This Act Seeks:

DUTIES
Sec. 5 (a) Each employer(1) shall furnish to each of his employees employment and a place of employment which are free from
recognized hazards that are causing or are likely to cause death or serious physical harm to his employees;
(2) shall comply with occupational safety and health standards promulgated under this Act.
(b) Each employee shall comply with occupational safety and health standards and all rules,regulations and
orders issued pursuant to this Act which are applicable to his own actions and conduct.
OSHA Regulations
OSHA regulations state in part: “At the time of initial assignment and at least annually thereafter, the employer
shall instruct every employee in the safe operation and servicing of all equipment with which the employee is,
or will be involved.”

Employer Responsibilities:
To ensure employee safety during Tractor and Implement operation, it is the employer’s responsibility to:
1.

Train the employee in the proper and safe operation of the Tractor and Implement.

Require that the employee read and fully understand the Tractor and Implement Operator’s manual.

Permit only qualified and properly trained employees to operate the Tractor and Implement.

Maintain the Tractor and Implement in a safe operational condition and maintain all shields and guards on the
equipment.

Ensure the Tractor is equipped with a functional ROPS and seat belt and require that the employee operator
securely fasten the safety belt and operate with the ROPS in the raised position at all times.

6.
7.

Forbid the employee operator to carry additional riders on the Tractor or Implement.
Provide the required tools to maintain the Tractor and Implement in a good safe working condition and provide the
necessary support devices to secure the equipment safely while performing repairs and service.

Require that the employee operator stop operation if bystanders or passerbys come within 25 feet.

Child Labor Under 16 Years of Age
Some regulations specify that no one under the age of 16 may operate power machinery. It is your
responsibility to know what these regulations are in your own area or situation. (Refer to U.S. Dept. of
Labor, Employment Standard Administration, Wage & Home Division, Child Labor Bulletin #102.)

CY84 03/08
© 2008 Alamo Group Inc.

Safety Section 1-23

SAFETY

“...to assure so far as possible every working man and woman in the nation safe and healthful working
conditions and to preserve our human resources...”

INTRODUCTION SECTION

Introduction Section 2-1
© 2008 Alamo Group Inc.

INTRODUCTION

This Rotary Mower is designed with care and built with quality materials by skilled workers. Proper assembly,
maintenance, and operating practices, as described in this manual, will help the owner/operator get years of
satisfactory service from the machine.
The purpose of this manual is to familiarize, instruct, and train. The Assembly Section instructs the owner/
operator in the correct assembly of the Mower using standard and optional equipment. The Parts Listing
section is designed to familiarize the owner/operator with replaceable parts on the Mower. This section
provides exploded assembly drawings of each mower component illustrating each piece and the
corresponding part number.
Careful use and timely service save extensive repairs and costly downtime losses. The Operation and
Maintenance Sections of the manual train the owner/operator how to work the Mower correctly and attend to
appropriate maintenance. The Trouble Shooting Guide helps diagnose difficulties with mower and offers
solution to the problems.
Safety is of primary importance to the owner/operator and to the manufacturer. The first section of this manual
includes a list of Safety Messages, that, if followed, will help protect the operator and bystanders from injury or
death. Many of the Safety Messages will be repeated throughout the manual. The owner/operator/dealer
should know these Safety Messages before assembly and be aware of the hazards of operating this blade
during assembly, use, and maintenance. The Safety Alert Symbol combined with a Signal Word, as seen
below, is intended to warn the owner/operator of impending hazards and the degree of possible injury faced
when operating this machine.

CY84 03/08
© 2008 Alamo Group Inc.

Introduction Section 2-2

INTRODUCTION
Pull-Type Model

INTRODUCTION
These mowers are available in lift-type and pull-type. These rugged Mowers are designed for medium-duty
work. They can mow pastures, cut brush up to 4" in diameter, and control grass and weeds on highways or
industrial sites.
For Non-Agricultural use, OSHA, ASAE, SAE, and ANSI standards require the use of Chain
Guards or Solid Skirts at all times. The Cutter manufacturer strongly recommends the use of
Chain Guards or Solid Skirts for Agricultural purposes as well, to reduce the risk of property
damage, serious bodily injury, or even death from objects thrown out by or from contact with
the Cutting Blades.
The 84" Lift-Type machine requires a minimum of 60 HP with adequate front end weight.
At least 20% or the tractor’s weight must be on the front tires with the implement lifted to
provide adequate traction for safe steering under good conditions. Slow down on hills, rough
terrain, and curves.

Front and rear, and left and right are determined by the normal direction of travel (the same as on your
automobile).

CY84 03/08
© 2008 Alamo Group Inc.

Introduction Section 2-3

INTRODUCTION
Attention Owner/Operator
BEFORE OPERATING THIS MACHINE:

INTRODUCTION

1. Carefully read the Operator’s Manual, completely understand the Safety Messages and instructions, and
know how to operate correctly both the tractor and implement.
2. Fill out the Warranty Card in full. Be sure to answer all questions, including the Serial Number of the
implement. Mail within 30 days of delivery date of this implement.
NOTE: Warranties are honored only if completed “Owner Registration and Warranty” forms are received by
Alamo Group within thirty days of delivery of the implement.
3. Record the Blade Model and Serial Numbers on the Warranty page at the front of the Operator’s Manual.
Keep this as part of the permanent maintenance file for the implement.

CY84 03/08
© 2008 Alamo Group Inc.

Introduction Section 2-4

ASSEMBLY SECTION

Assembly Section 3-1
© 2008 Alamo Group Inc.

ASSEMBLY
Optional A-Frame Assembly
(Figure Asm-0032)

ASSEMBLY

To assemble the Mower’s A-Frame, follow the procedures listed below:
1. Insert bushing (5) into lower end of each AFrame half (1 & 2). Position each A-Frame half
so the large hole in the top is towards the tractor. Install 3/4 x 2" bolt (10) with Flatwasher
(14) through bushing (5) in A-Frame half (1 & 2)
and rear hole in inside Main Frame lug. Install
locknut.
2. Install bushing (8) between braces (3) through
top rear hole of A-frame and insert bolt (12),
flatwasher (14) and locknut (13).
3. Install bushing (22) between A-Frame halves (1
& 2) and insert bolt (23) and locknut (13).
Install bushings (6) through Braces (4) and
install bolt 3/4 x 5 (10), flatwashers (14) and
locknut (13).
4. Attach Braces (3) to Braces (4) with bushings
(6), bolt 3/4 x 2-1/2 (16), and locknut (13).
Retain the rear of Braces (3) together with
bushing (15), bolt 3/4 x 2-1/2 (11) and locknut
(13). Attach braces (4) together with bolt 3/4 x
1-1/2 (17) and locknut (13).
5. Install Brace supports (4) to the rear lugs on the
Main Frame with bolts 3/4 x 2 (10), flatwashers (14), bushings (6) and locknuts (13).

Single Tail Wheel Assembly - Lift-Type
(Figure Asm-0033)
Insert bushing (2) in lug centered behind gearbox.
Attach the tail wheel beam (1) to the lug on the
mower deck using bolt (3) and locknut (4).
Attach the brackets (5 & 6) to the main deck using
bolts (8), washer (9), & nuts (10). Note: Formed
leg with adjustment holes must point to rear and
should be on each side of tail wheel beam.
Install bolts (11) & nuts (12) on top and bottom of tail
wheel beam. Insert through pair of holes which will
give approximate desired cutting height. Tighten all
bolts per Torque Chart.

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-2

ASSEMBLY
Dual Tail Wheel Assembly
Lift-Type (Figure Asm-0034)
Attach the tail wheel beam (1) to the lug toward the
outer edge of the deck just to the rear of the cross
reinforcement using bolt (2) & nut (3).
Attach the brackets (5 & 6) to the deck using bolts
(7), washers (8), and nuts (9).

Install bolts (10) & nuts (11) on top and bottom of tail
wheel beam. Insert through pair of holes which will
give approximate desired cutting height. Tighten all
bolts.
Pull-Type
The standard Pull-Type unit will be shipped from the factory in the following bundles: 1) Basic Assembly,
2)Jackshaft Assembly, 3) Jackshaft Bearing Support, 4) Gearbox Protective Shield, 5) PTO Driveline, 6)
Tongue Assembly, 7) Control Rod Bundle, 8) Axle Arm Bundle and Lift Lug and/or Spring Assembly, 9) Wheels,
10) Jack, 11) Operator’s Manual and Flat Blades. Other optional bundles that may be shipped with your unit:
Ratchet Lift Screw or Hydraulic Cylinder with Hydraulic Hose and Hose Bracket, Puncture-Proof tires or 14" or
15" Wheels, Chain Guards. Extra Equipment items include: Chain Guards, Solid Guards, Dual Wheels, Hitch
and Spring Assembly (Axle).
The Components of these machines are quite heavy. Block all components up securely
before working under or putting extremities under such parts.

Tongue
Insert tongue lugs between mainframe uprights and
retain using special pin. Insert retaining clip to
retaining pin (Figure Asm-0035).

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-3

ASSEMBLY

NOTE: Formed leg with adjustment holes point to
rear on part (5) and to front on part (6).

ASSEMBLY
Axle

ASSEMBLY

Attach Rear Axle to the lugs on the rear of the
mainframe using (5) 3/4 x 3-1/2 bolts and locknuts
(Figure Asm-0036).

Control Rods
Attach the two level-lift control rods to the lower lugs on tongue and to lugs on the rear axle tube using pins,
washers and cotter pins.
NOTE: The adjusting nuts on control rods should be
to rear of machine (Figure Asm-0037).

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-4

ASSEMBLY
Hydraulic or Manual Lift
Attach the Spring Assembly (Figure Asm-0038) to
the lug on the mower deck behind the Center
Gearbox. Retain using 3/4 x 3 capscrews and
locknuts. Install the Hydraulic Cylinder or the
manual Ratchet Lift Screw (Figure Asm-0039)
between the Axle Center Lug and the Lug directly
behind the Center Gearbox. Tighten the two Bolts
securely.

ASSEMBLY

Wheels
Install the Wheels on the Wheel Hubs. NOTE: If
Laminated Tires are used, place the flat side of the
Lug Nut against the Wheel (Figure Op-42). Note
direction of travel and curvature of rubber segments
in tire and install as shown in (Figure Op-42).

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-5

ASSEMBLY
Shields, Guards, and Deflectors
Shields, Guards, and Deflectors are provided for the protection of the operator and bystanders. The
Manufacturer strongly recommends the use of Protective Shielding at all times. Do not operate the machine
without Shields in place.
Make certain that all Driveline Shields are installed and turn freely and that the tractor PTO shield is replaced
before starting the PTO. Attach the other chains on shields to mower and to tractor to prevent shield rotation.

ASSEMBLY

Rubber Fabric Deflectors (Standard Equipment)
Front Deflector (Figure Asm-0040)
1. Attach the front Bracket (1) to the front mower
with 4 - 1/2" x 3" Bolts (5), Locknuts (6), and
washers (7).
2. Attach the front Deflector to the Bracket with
Strap (3), 3/8" x 1-1/2" Bolts (6), and Locknuts
(4).

Rear Chain Guards (Figure Asm-0041)
Attach the Right Guard Mounting Plate (1) & the
Left Chain Guard Mounting Plate (2) to the mower
with 1/2" x 1-1/2" Bolts (3), Flatwashers (4) and
Locknuts (5). Then attach Deflectors (6) and Bar
Strap (7) to Mounting Plates with 1/2" x 1-1/2"
bolts(8) Flatwashers(9) and Locknuts (10). Fasten
Side Rear Chain Guard (11) to Chain Guard
Mounting Plates (1&2) with 1/2" x 1-1/4" bolts (12)
Flatwashers (13) and Locknuts (14).

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-6

ASSEMBLY
Chain Guard (Extra Equipment)
Front Chain Guards (Figure Asm-0042)

Rear Chain Guards (Figure Asm-0043)
Attach the Right Chain Guard Mounting Plate (1) &
the Left Chain Guard Mounting Plate (2) to the
mower with 1/2" x 1-1/2" Bolts (3), Flatwashers (4)
and Locknuts (5). Then attach Chain Guards (6) to
Chain Guard Mounting Plates with 1/2" x 1-1/2"
bolts (7) Flatwashers (8) and Locknuts (9). For
Double Chain Guards attach with 1/2" x 3" bolts
(10), Flatwashers (11), Spacers (12) and Locknuts
(13). Fasten Side Rear Chain Guard (14) to Chain
Guard Mounting Plates (1&2) with 1/2" x 1-1/4"
bolts (15) Flatwashers (16) and Locknuts (17).

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-7

ASSEMBLY

Attach the Right Chain Guard Mounting Plate (1) &
the Left Chain Guard Mounting Plate (2) to the
mower with 1/2” x 1-1/2” Bolts (3), Flatwashers (4)
and Locknuts (5). Then attach Chain Guards (6) to
Chain Guard Mounting Plates with 1/2” x 1-1/2”
bolts(7) Flatwashers(8) and Locknuts (9). For
Double Chain Guards attach with 1/2” x 3" bolts
(10), Flatwashers (11), Spacers (12) and Locknuts
(13). Fasten Side Rear Chain Guard (14) to Chain
Guard Mounting Plates (1&2) with 1/2” x 1-1/4”
bolts (15) Flatwashers (16) and Locknuts (17).

ASSEMBLY
Driveline Attachment

ASSEMBLY

(Figure Asm-0044)
Remove washer, castle nut, and cotter pin from
wing gearbox shaft. Install clutch yoke on shaft.
Attach yoke to clutch by inserting spacer flat (1)
between yoke and clutch. Insert 5/16 x 3-1/2 bolts
(2) and install locknuts (3). Tighten securely. Install
washer and castle nut on gearbox shaft between
yoke ears. Tighten Mounting Nut and the back off to
allow approximately.015 clearance (Figure Asm0044).

Install Canopy Shield over
Torque Limiter and make certain it remains installed at all times when operating this Mower.

Gearbox Shield Assembly
(Figure Asm-0045)
Install the Gearbox Shield (1) using two existing
bolts in gearbox top cover plate. Tighten all
hardware in accordance with the torque chart in the
Maintenance section of this manual. Install wing
nut (2) hand-tight for ease of raising shield for
service.

DO NOT operate if Shields are
inoperative or removed.

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-8

ASSEMBLY
Check Chains (Extra Equipment) for Lift-Models
(Figure Asm-0046)
Check Chains are available for attachment to front
of Mower as an accessory. Check chains are used
to control cutting height and especially allow Mower
to be lowered to the same preset cutting height
effortlessly.

Install chain lugs (3) on either side of tractor top link
mounting (5) using bolt or pin of required diameter
and length. CAT I kit requires a 3/4" diameter bolt.
CAT II kit requires a 1" diameter bolt. Install top end
of check chains in brackets (3).
Cutting height is then set by placing proper chain
link in keyhole slot.
Cutting height is easily
adjustable by hooking chain higher or lower in the
keyholes in chain lug (3).

For additional safety in transport,
raise mower as high as possible without having driveline hit deck and shorten check chains
as much as possible to prevent inadvertent falling in transport.
NOTE: CHECK TO BE SURE GEARBOX IS FILLED WITH LUBRICANT TO THE TEST PLUG LEVEL. The
lubricant required is SAE EP90 or SAE EP80W90 with EP additives for extreme pressure and temperature,
with a API-GI-5 service rating.

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-9

ASSEMBLY

Install lower end of check chain (4) to hitch ears (6)
through lower holes (7) using bolts, nuts and
lockwashers(8). Tighten securely.

ASSEMBLY
Jackshaft Bearing Support Assembly

ASSEMBLY

(Figure Asm-0047)
Attach the Jackshaft bearing support brackets (1&2)
to the tongue. Loosely attach bearing support
brackets by using 1/2” x 7-1/2” bolt (3), washer (5),
bushing (4) and nuts (6). Be sure that support
brackets are assembled through rear hole on the
tongue. Then assemble Snap Ring (7) Bearing (8)
and housing assembly (9) and install with 3/4” x 7"
bolt (10) and nut (11). Install Spacer (12) with 1/2” x
7-1/2”bolt (13) and nut (14) leaving installed loosely.
Tighten bolt (13). NOTE: Do not tighten to point of
collapsing spacer (12).Tighten bolts (3 & 10) NOTE:
Do not over tighten. Make sure Carrier Bearing (9)
pivots in supports and complete assembly pivots on
lower bolt. Slide Jackshaft through bearing (9) and
Snap on to the driveline (15).
NOTE: ALL Yokes must be set as shown for proper
phasing.

CY84 03/08
© 2008 Alamo Group Inc.

Assembly Section 3-10

OPERATION SECTION

Operation Section 4-1
© 2008 Alamo Group Inc.

OPERATION

RHINO CY84 HEAVY-DUTY ROTARY MOWER
OPERATION INSTRUCTIONS
Rhino Cyclone 84 (CY84) Heavy-Duty Rotary Mowers are manufactured with quality material by skilled
workers. These rugged mowers are engineered for cutting vegetation up to 3-1/2” diameter in commercial,
industrial, and agriculture applications such as mowing rights-of-way, roadsides, and pastures. The mower is
equipped with protective safety deflectors and/or chain guards to prevent objects being thrown by blades,
however, no shielding is 100% effective. All shields, deflector’s, and chains equipped on the unit must be
maintained on the mower in good operational condition.
It is the operator’s responsibility to be knowledgeable of all operating hazards and to take every reasonable
precaution to ensure oneself, others, animals, and property are not injured or damaged by the mower, tractor,
or a thrown object. Do Not operate the mower if passersby, pets, livestock, or property are directly in front or to
the rear of the unit.
This section is designed to familiarize, instruct, and educate safe and proper mower use to the operator.
Pictures contained in this section are intended to be used as a visual aid to assist in explaining the operation of
a rotary mower and are not necessarily of a CY84 mower. Some pictures may show shields removed for
purposes of clarity. NEVER OPERATE this implement without all shields in place and in good operational
condition. The operator must be familiar with the mower and tractor operation and all associated safety
practices before operating the mower and tractor. Proper operation of the CY84 mower, as detailed in this
manual, will help ensure years of safe and satisfactory use of the mower.
IMPORTANT: To avoid damage to the cutter, retorque all bolts after the first 10 hours of operation. Retorque
blade carrier retaining nut to 400 ft. lbs.
READ AND UNDERSTAND THE ENTIRE OPERATING INSTRUCTIONS AND SAFETY SECTION OF THIS
MANUAL AND THE TRACTOR MANUAL BEFORE ATTEMPTING TO USE THE TRACTOR AND
IMPLEMENT. If you do not understand any of the instructions, contact your nearest authorized dealer for a
full explanation. Pay close attention to all safety signs and safety messages contained in this manual and
those affixed to the implement and tractor. OPS-U- 0001

Si no lee ingles, pida ayuda a alguien que si lo lea para que le traduzca las
medidas de seguridad. (SG-3)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-2

OPERATION
1. Standard Equipment and Specifications
CY84
60 HP
30 HP
Rubber Belting
84”
90-3/8”
125”
152-1/2”
2-3/8” - 16-1/2” Min.
Ratchet Jack or Hydraulic Cylinder (Pull)
Std. (Pull)
1869 lbs.
CAT II-III Q.H. or Pull
H.D. Pan
1/2” x 4” Updraft
150 HP*
150 HP*
2-3/8”
16,328 FPM
15,994 FPM
3-1/2”
Cat 5
Slip Clutch
3/16”
1/4” x 10-3/4”
Single or Dual, Laminated
Laminated Foam-Filled Used Airplane,
Used Airplane,
Implement, 15” Rim
Std. (Pull)

Safety Tow Chain
*Ratings based on actual field performance.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-3

OPERATION

Horsepower Required (Min.):
Lift
Pull
Safety Deflector
Cutting Width
Overall Width
Overall Length:
Lift
Pull
Cutting Height
Self-Leveling Height Adjustment
Jack Stand
Base Unit Weight (Approx.)
Hitch
Blade Carrier
Blades
Gearbox Rating:
540 RPM
1000 RPM
Output Shaft Diameter
Blade Tip Speed:
540 RPM
1000 RPM
Cutting Capacity (Max.)
Driveline Size
Driveline Protection
Deck Thickness
Side Skirt
Tires & Wheel:
Lift
Pull

OPERATION
2. OPERATOR REQUIREMENTS

OPERATION

Safe operation of the unit is the responsibility of a qualified operator. A qualified operator has read and
understands the implement and tractor Operator’s Manuals and is experienced in implement and tractor
operation and all associated safety practices. In addition to the safety messages contained in this manual,
safety signs are affixed to the implement and tractor. If any part of the operation and safe use of this
equipment is not completely understood, consult an authorized dealer for a complete explanation.
If the operator cannot read the manuals for themselves or does not completely understand the operation of the
equipment, it is the responsibility of the supervisor to read and explain the manuals, safety practices, and
operating instructions to the operator.
Safe operation of equipment requires that the operator wear approved Personal Protective Equipment (PPE)
for the job conditions when attaching, operating, servicing, and repairing the equipment. PPE is designed to
provide operator protection and includes the following safety wear:
PERSONAL PROTECTIVE EQUIPMENT (PPE)
•
•
•
•
•
•
•

Protective Eye Glasses, Goggles, or Face
Shield
Hard Hat
Steel Toe Safety Footwear
Gloves
Hearing Protection
Close Fitting Clothing
Respirator or Filter Mask (depends on
operating conditions) OPS-U- 0002

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-4

OPERATION
3. TRACTOR REQUIREMENTS
The tractor used to operate the mower must have the power capacity to lift, pull, and operate the Power Take
Off (PTO) at the mower’s rated speed while traveling at a ground speed between 2 and 5 MPH. Operating the
mower with a tractor that does not meet the following requirements may cause tractor or mower damage and
be a potential danger to the operator and passersby.

Tractor Requirements and Capabilities

•
•
•
•

ASABE approved Roll-Over Protective Structure (ROPS) or ROPS cab and seat belt.
Tractor Safety Devices ..................... Slow Moving Vehicle (SMV) emblem, lighting, PTO master shield
Tractor Horsepower:
-Minimum .................. Lift - 60 HP, Pull - 30 HP
-Maximum .................. 90 HP
Hitch - Lift-Type Mower
- Lifting Capacity ........ 1600 lbs.
- 3-Point Hitch ............ CAT II-III Quick Hitch
Hitch - Pull-Type Mower
- Drawbar ................... 14” extended length, safety chain attachment point
- Hydraulics................ Optional
Front End Weights............................ As needed to maintain 20% weight on front axle
Power Take Off................................. 540 RPM 6-spline or 1000 RPM 21-spline shaft

3.1 ROPS and Seat Belt
The tractor must be equipped with a Roll-Over-Protective-Structure (ROPS) (tractor cab or roll-bar) and seat
belt to protect the operator from falling off the tractor, especially during a roll over where the driver could be
crushed and killed. Only operate the tractor with the ROPS in the raised position and seat belt fastened.
Tractor model not equipped with a ROPS and seat belt should have these life saving features installed by an
authorized dealer. OPS-U- 0003
Operate this Equipment only with a Tractor equipped with an approved rollover-protective system (ROPS). Always wear seat belts. Serious injury or
even death could result from falling off the tractor--particularly during a turnover
when the operator could be pinned under the ROPS. (SG-7)

3.2 Tractor Safety Devices
If transporting or operating the tractor and implement near a public roadway, the tractor must be equipped with
proper warning lighting and a Slow Moving Vehicle (SMV) emblem which are clearly visible from the rear of
the unit. Lights and a SMV emblem must be equipped directly on implements if the visibility of the tractor
warning signals are obscured.
Maintain all manufacturer equipped safety shields and guards. Always replace shields and guards that were
removed for access to connect, service, or repair the tractor or implement. Never operate the tractor PTO
with the PTO master shield missing or in the raised position. OPS-U- 0004

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-5

OPERATION

•
•
•

OPERATION
3.3 Tractor Horsepower
The power required to operate a mower is determined by the tractor PTO horsepower. For most mowing
conditions, the CY84 mower requires a tractor with at least 60 HP for a lift unit and 30 HP for a pull-type.
Operating the mower with a tractor that does not have adequate power may damage the tractor engine.
Exceeding 90 HP may cause mower damage by overpowering the unit in heavy cutting conditions.

3.4 3-Point Hitch

OPERATION

The tractor 3-point hitch must be rated to lift at least
1600 lbs.
The CY84 mower is designed to be mounted on a
tractor with a CAT II or III 3-point hitch. Refer to the
tractor operator’s manual for the category of the
tractor being used. If the hitch does not conform to
ASAE CAT II or III dimensions, the mower may not
fit or raise properly. Consult an authorized dealer
for possible modification procedures to mount
nonconforming hitches.
Depending on the hitch category, certain size pins
are used to attach the mower to the tractor. CAT II
hitches require 7/8” lower and 3/4” upper diameter
hitch pins. CAT III hitches require 1-7/16” lower and
1-1/4” upper diameter size pins.
CAT II Implement / Hitch SpecificationCAT III
Implement/ Hitch Specification
Width from outside to outside A-frame...........32-3/8”

Width from outside to outside A-frame ................38”

Quick Hitch width inside lug to lug ................33-5/8”

Quick Hitch width inside lug to lug .................39-1/4”

Height from bottom hitch pin to top pin ................19”

Height from bottom hitch pin to top pin ................22”

Lower pin diameter ........................................1-1/18”

Lower pin diameter ........................................1-7/16”

Upper pin diameter ...............................................1”

Upper pin diameter ..........................................1-1/4”

Lynch pin diameter .........................................15/32”

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-6

OPERATION
3.5 Drawbar - Pull-Type Mower
For pull-type mowers (540 and 1000 RPM)
equipped with an equal-angle driveline, the tractor
drawbar must be positioned at a 14” distance from
the hitch point to the PTO shaft end for proper
operation and minimal wear to the driveline and
tractor.

3.6 Front End Weight
A minimum of 20% total tractor weight must be maintained on the tractor front end at all times. Front end
weight is critical to maintain steering control and to prevent the tractor from rearing up while driving. If the
front end is too light, add weight until a minimum of 20% total weight is reached on the front tires. Front
weights and weight carriers can be purchased through an authorized tractor dealership. OPS-U- 0005

3.7 Power Take Off (PTO)
Depending on the unit, the mower is designed to operate at a PTO speed of 540 or 1000 RPM. Most tractors
operate at either 540, or a combination of 540 and 1000 RPM PTO speeds. The operating speed of the
mower and tractor can be determined by the number of splines on the driveline yoke and PTO output shaft.
Those operating at 540 RPM will have a 6-spline shaft and those operating at 1000 RPM will have a 21-spline
shaft or a 1-3/4” 20 spline shaft. Refer to the tractor owner’s manual for instructions to change PTO speeds on
models that operate at more than one speed.
If operating an older model tractor where the tractor’s transmission and PTO utilize one master clutch, an
over-running clutch must be used between the PTO output shaft and the driveline of the mower. An
authorized tractor dealer can provide the over-running clutch and its installation if needed. OPS-U- 0006

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-7

OPERATION

If attaching the mower tongue clevis to a 3-point
hitch drawbar supported by the lower lift arms, the
attaching point must be extended past the main bar
to allow for turning without binding the clevis and
bar. Lift arm stabilizers must be used with this type
of drawbar to prevent the mower from swaying from
side to side.

OPERATION
DO NOT use a PTO adapter to attach a non-matching Implement driveline to a Tractor
PTO. Use of an adapter can double the operating speed of the Implement resulting in
excessive vibration, thrown objects, and blade and implement failure. Adapter use will also
change the working length of the driveline exposing unshielded driveline areas. Serious
bodily injury and/or equipment failure can result from using a PTO adapter. Consult an
authorized dealer for assistance if the Implement driveline does not match the Tractor PTO.

OPERATION

(S3PT-14)

Never operate the Tractor and Mower if the Implement input driveline is directly connected
to the Tractor transmission. Tractor braking distances can be substantially increased by
the momentum of the rotating Mower blades driving the Tractor transmission even though
the Tractor clutch has been disengaged. Install an over running clutch between the Tractor
PTO and the Mower driveline to prevent this potentially dangerous situation. (S3PT-16)

4. GETTING ON AND OFF THE TRACTOR
Before getting onto the tractor, the operator must read and completely understand the implement and tractor
operator manuals. If any part of either manual is not completely understood, consult an authorized dealer for
a complete explanation. OPS-U- 0007
Do not mount the Tractor while the tractor is moving. Mount the Tractor
only when the Tractor and all moving parts are completely stopped. (SG-12)

4.1 Boarding the Tractor
Use both hands and equipped handrails and steps for support when boarding the tractor. Never use control
levers for support when mounting the tractor. Seat yourself in the operator’s seat and secure the seat belt
around you.
Never allow passengers to ride on the tractor or attached equipment. Riders can easily fall off and be
seriously injured or killed from falling off and being ran over. It is the operator’s responsibility to forbid all extra
riders at all times. OPS-U- 0008

Never allow children to operate, ride on, or come close to the Tractor or
Implement. Usually, 16-17 year-old children who are mature and
responsible can operate the implement with adult supervision, if they
have read and understand the Operator’s Manuals, been trained in
proper operation of the tractor and Implement, and are physically large
enough to reach and operate the controls easily. (SG-11)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-8

OPERATION
Never allow children or other persons to ride on the Tractor or Implement.
Falling off can result in serious injury or death. (SG-10)

4.2 Dismounting the Tractor

Use hand rails and steps when exiting the tractor. Be careful of your step and use extra caution when mud,
ice, snow or other matter has accumulated on the steps or hand rails. Use all handrails and steps for support
and never rush or jump off the tractor. OPS-U- 0009

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-9

OPERATION

Before dismounting, park the tractor and implement on a reasonably level surface, apply the parking brake,
idle the engine down, disengage the PTO, and lower the implement to the ground. Shut down the tractor
engine according to the operator’s manual, remove the key, and wait for all motion to completely stop. Never
leave the seat until the tractor, its engine and all moving parts have come to a complete stop.

OPERATION
5. STARTING THE TRACTOR
The operator must have a complete understanding of the placement, function, and operational use of all
tractor controls before starting the tractor. Review the tractor operator’s manual and consult an authorized
dealer for tractor operation instructions if needed.

OPERATION

Essential Tractor Controls:
• Locate the light control lever.
• Locate the engine shut off control.
• Locate the brake pedals and the clutch.
• Locate the PTO control.
• Locate the 3-point hitch control lever.
• Locate the hydraulic remote control levers.
Before starting the tractor ensure the following:
• Conduct all pre-start operation inspection and service according to the tractor operator’s manual.
• Make sure all guards, shields, and other safety devices are securely in place.
• The parking brake is on.
• The PTO control lever is disengaged.
• The 3-point hitch control lever is in the lowered position.
• The hydraulic remote control levers are in the neutral position.
• The tractor transmission levers are in park or neutral.
Refer to the tractor owner’s manual for tractor starting procedures. Only start the tractor while seated and
belted in the tractor operator’s seat. Never bypass the ignition switch by short circuiting the starter solenoid.
After the tractor engine is running, avoid accidental contact with the tractor transmission to prevent sudden
and unexpected tractor movement. OPS-U-0028
Start tractor only when properly seated in the Tractor seat. Starting a
tractor in gear can result in injury or death. Read the Tractor operators
manual for proper starting instructions. (SG-13)

6. CONNECTING THE MOWER TO THE TRACTOR
Use extreme caution when connecting the mower to the tractor. The mower should be securely resting at
ground level or setting on blocks. Keep hands and feet from under the mower deck and clear of pinch points
between the tractor hitch arms and mower pins. OPS-R-0001
Never stand or allow another person to stand between a running Tractor and the Mower
when attaching the Implement to the Tractor. Always shut the Tractor completely off before
attempting to connect the Mower pins to the Tractor hitch.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-10

OPERATION
Always shut the Tractor completely down, place the transmission in park, and set the
parking brake before you or anyone else attempts to connect or disconnect the Implement
and Tractor hitches. (S3PT-15)

6.1 Connecting the Mower - Lift-Type
1. Make sure the tractor is equipped with the
correct PTO shaft. Change shafts if needed.

3. Board the tractor and start the engine. Position
the tractor to the mower with the 3-point lift
arms positioned between the respective set of
mower A-frame lift lugs.
NOTE: Set the 3-point lift control to “Position
Control” so that the lift arms maintain a constant
height when attaching the mower. See the
tractor Operator’s Manual for correct settings
when attaching 3-point equipment.
4. Turn off the tractor engine and dismount.
5. One lift arm at a time, align arm end hole
between the set of A-frame lift lugs. Insert hitch
pin through the lug and arm holes and insert
retaining pin into hitch pin.
6. Walk around to opposite side and repeat
procedure for remaining lift arm and hitch pin.
7. Extend or retract 3-point top link to align its end
hole with the holes of the mower’s top link.
Insert the top link hitch pin and insert retaining
pin into hitch pin.
8. Adjust any lower link check chains, guide
blocks, or sway blocks to prevent the mower
from swaying side to side and possible contact
with tractor rear tires.
NOTE: Offset Adaptor Hitches are available to position the mower to the left or right. Mowers with Offset
Adaptor hitches connect to the 3-Point hitch the same way as the mower A-frame. See Offset Adaptor Hitch in
the Assembly Section for details to equip the mower with this feature.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-11

OPERATION

2. Shorten or remove the tractor drawbar to avoid
interference when raising and lowering the
mower.

OPERATION

6.2 Connecting the Mower - Pull-Type
1. Make sure the tractor is equipped with the
correct PTO shaft and the drawbar is extended
14” from the end of the PTO shaft to the hitch
point.
2. Block the mower wheels in place and use the
attached parking jack to raise or lower the
tongue clevis to the height of the tractor
drawbar. The parking jack can be rotated 15
degrees in each direction to obtain a near
vertical position.
NOTE: Always place jack foot on firm surface
or place board under jack for support.
3. Board the tractor and start the engine. Back
the tractor to the mower aligning the drawbar
hitch hole with the mower hitch clevis. Turn off
the engine, secure the tractor in position, and dismount.
4. To attach the mower, place two 1” flatwashers
(1) positioned under top lip of tongue clevis and
to the top of drawbar.
Add additional 1”
flatwashers (2) between the bottom of drawbar
and bottom lip of clevis to fill open space.
Insert a 3/4” x 4-1/2” grade 5 or 8 bolt (3)
through clevis and drawbar and retain in
position with a 1” locknut (4). The bolt and
locknut should be tightened securely to support
the tongue properly without springing of
breaking the clevis. Never attach mower to the
tractor with a pin not having a nut.
5. Securely attach mower safety chain from
mower tongue to tractor drawbar or drawbar
support frame.
6. Lower the jack until the tongue is completely
supported by the drawbar. Remove jack from
the tongue and place on storage bracket of
mower main frame.
7. If using a hydraulic cylinder, connect hydraulic
hose ends into tractor hydraulic ports.
Pressure may need to be relieved from the
system to allow for ease of attachment.
8. If the mower has been attached to a 3-point
hitch drawbar, adjust any tractor equipped
lower link check chains, guide blocks, or sway
blocks to prevent the hitch and mower from
swaying side to side.
NOTE: Never raise the 3-point lift with the mower attached as catastrophic driveline damage will occur.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-12

OPERATION
Safety Chains
When towing implements on a public roadway, use a safety chain with tensile strength equal to or greater than
the gross weight of the unit being towed. This will control the implement in the event the hitch pin is lost during
transport.
After the ends of the safety chain are attached to the implement and the tractor, make a trial run by driving the
tractor to the right and to the left to check for proper length. If necessary, readjust the chain to eliminate loose
or tight chain lengths.

Properly setting the cutting height is essential for efficient and safe operation. A properly set mower will make
a more uniform cut, distribute clippings more evenly, require minimal tractor work, and follow the contour of
uneven terrain. NOTE: Avoid very low cutting heights, striking the ground with the blades gives the most
damaging shock loads and will cause damage to the mower and drive. Blades contacting the ground may
cause objects to be thrown out from under the mower deck. Always avoid operating the mower at a height
which causes the blades to contact the ground. OPS-U- 0010

7.1 Setting Mower Height - Lift-Type
1. Park the tractor and mower on level ground.
2. Using the 3-point hitch control lever, position
the front of the mower with the side skids 1”
less off the ground than desired cut height. For
example, for a 3” cut, position the skids 2” from
the ground. Set the 3-point control lever stop at
this position to maintain this height when raising
and lowering the mower.
3. Shut down the tractor and remove the key.
4. Level the mower deck front to rear by extending
or retracting the 3-point top link.

5. Level the mower side to side by manipulating
one lower lift arm length. On most tractors, at
least one of the lift arms is designed to allow for
manipulation of its length. Shortening or
extending will allow for deck leveling from side
to side.
6. Securely block up the mower at this height.
7. Remove the bolts securing the tail wheel beam
positioning bracket to the support brackets and
allow the tail wheel to rest at ground level. Align
beam and positioning brackets holes with closest set of holes in support brackets and reinstall
bolts securing the beam in position. Tighten all
bolts and nuts.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-13

OPERATION

7. SETTING THE MOWER

OPERATION

8. Extend the tractor’s top 3-point link so that
when lifting the mower, the front of the deck will
raise 2 to 2½" before the tail wheel leaves the
ground. This will allow the mower to follow the
contour of uneven terrain.
NOTE: Install optional check chains when there is a
problem with the hydraulic 3-Point lift maintaining a
set height or when a constant pre-adjusted cut
height is required. See Check Chains in the
Assembly Section for this accessory.

7.2 Setting Mowing Height - Pull-Type
1. Park the tractor and mower on level ground.
2. Using the tail wheel ratchet jack or hydraulic
cylinder, position the mower so the skid shoes
are 1” less off the ground than the desired final
cut height. For example, if a 3” cut is desired,
raise or lower the mower until the skid shoes
are 2” off the ground. If a hydraulic cylinder is
used, stroke control spacers can be placed on
the hydraulic shaft to maintain a set cutting
height each time the mower is raised and
lowered.
3. Adjust the mower leveling rod so that the front
of the mower is approximately 3/4” lower that
the rear.
4. If the mower is attached to a 3-point hitch
drawbar, adjust any tractor equipped lower link
check chains, guide blocks, or sway blocks to
prevent the hitch and mower from swaying from
side to side. Never raise the 3-point lift with the
mower attached as catastrophic driveline
damage will occur.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-14

OPERATION
7.3 Setting Deck Pitch
To facilitate safe and efficient operation, the mower
should be operated with the deck approximately
3/4” LOWER IN THE FRONT THAN THE REAR.

Adjust the leveling rods linking the tongue to the
rear axle until the front of the mower is at least 3/4”
lower in the front that than the rear. To lower the
front, lengthen the leveling rods and to raise the
front shorten the leveling rods. IMPORTANT:
Adjust the leveling rods the same amount and
maintain equal tension in the rods. Improper adjustment may cause rods to snap or bend. Retighten the
jamnuts after the deck pitch has been set. OPS-R-0002

Setting Deck Pitch - Lift-Type
1. Lower the mower until the rear of the mower is resting securely on its tail wheels.
2. Lower the 3-point lift arms further until the front of the mower is at least 3/4” lower than the rear.
3. Place the tractor’s 3-point control lever stop at this point to maintain the deck pitch.
Setting Deck Pitch - Pull-Type
1. Adjust the leveling rods linking the tongue to the rear axle until the front of the mower is at least 3/4” lower
in the front than the rear. To lower the front, lengthen the leveling rods and to raise the front, shorten the
leveling rods.

8. DRIVELINE ATTACHMENT
The driveline yoke and tractor PTO shaft must be
dirt free and greased for attachment.
To connect the mower driveline to the tractor PTO
output shaft, pull the driveline yoke collar back and
align the grooves and splines of the yoke with those
of the PTO shaft. Push the driveline yoke onto the
PTO shaft, release the locking collar, and position
the yoke until the locking collar balls are seated
onto the PTO shaft. Push and pull the driveline
back and forth several times to ensure a secure
attachment. OPS-R-0003_A

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-15

OPERATION

Operating the mower at this pitch will allow the
mower to cut the grass only once and requires less
work from the tractor. In addition, a more even
distribution of the clippings from the rear of the
mower will be achieved with this deck pitch.

OPERATION
When attaching the Implement input driveline to the Tractor PTO, it is important that the
connecting yoke spring activated locking collar slides freely and the locking balls are seated
securely in the groove on the Tractor PTO shaft. A driveline not attached correctly to the
Tractor PTO shaft could come loose and result in personal injury and damage to the
Implement. (S3PT-17)

OPERATION

8.1 Driveline Length Check
Before operating the Implement, check to make sure the Implement input driveline will not
bottom out or become disengaged. Bottoming out occurs when the inner shaft penetrates
the outer housing until the assembly becomes solid-it can shorten no more. Bottoming out
can cause serious damage to the Tractor PTO by pushing the PTO into the Tractor and
through the support bearings or downward onto the PTO shaft, breaking it off. A broken
driveline can cause personal injury. (S3PT-18)

When fitting the mower to the tractor, the telescoping driveline must be inspected to ensure that at its most
compressed position, the profiles do not “bottom out”, and when at its farthest extended position, there is
sufficient engagement between the profiles to operate safely. At its shortest length, there must be at least a 1”
clearance between each profile end and opposite profile universal joint. At its farthest operating extension, a
minimum profile engagement of 9” must be maintained.
“Bottoming Out” Check Procedure
•
•
•
•

•

Disconnect driveline from the tractor and slide
the profiles together until fully compressed.
Place a mark on the inner shield 1/8” from the
end of the outer shield.
Reattach the driveline to the PTO Shaft.
Lift Type - With the PTO NOT TURNING, raise
and lower the mower and watch shaft
movement.
Pull Type - With the PTO NOT TURNING, drive
the tractor and mower through the sharpest turn
possible and watch shaft movement. With the
PTO NOT TURNING, drive the tractor and
mower through the most severe terrain conditions expected and watch shaft movement.
Raise the mower and watch the driveline as it
approaches the mark. If the distance between the mark and the end of the outer shield tube becomes less
than 2” at any point, contact your local dealer or tech service for proper directions. OPS-R-0004_B

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-16

OPERATION
Engagement Check Procedure
•
•
•
•
•

With the driveline attached, position the mower to the point where the telescoping driveline is at its
maximum extension. Turn off the tractor and securely block the mower at this position.
Mark the inner driveline shield 1/8” from the end of the outer shield.
Disconnect the driveline from the tractor and separate the two driveline halves.
Measure the distance from the mark to the end of the inner profile. This length is the amount the driveline
profiles were engaged.
If the engaged length is less than 9”, the shaft is considered too short and should be replaced with a longer
shaft. Consult an authorized dealer to purchase the required driveline length.

9. PRE-OPERATION INSPECTION AND SERVICE
Before each use, a pre-operation inspection and service of the implement and tractor must be performed.
This includes routine maintenance and scheduled lubrication, inspecting that all safety devices are equipped
and functional, and performing needed repairs. DO NOT operate the unit if the pre-operation inspection
reveals any condition affecting safe operation. Perform repairs and replacement of damaged and missing
parts as soon as noticed. By performing a thorough pre-operation inspection and service, valuable down time
and repair cost can be avoided. OPS-U-0029
Always disconnect the main PTO Driveline from the Tractor before performing service on
the Implement. Never work on the Implement with the tractor PTO driveline connected and
running. Rotating Parts, Blades or Drivelines could turn without warning and cause
immediate entanglement, injury or death. (S3PT-11)
Never work under the Implement, the framework, or any lifted
component unless the Implement is securely supported or blocked up
to prevent sudden or inadvertent falling which could cause serious
injury or even death. (SG-14)

Periodically inspect all moving parts for wear and replace when
necessary with authorized service parts. Look for loose fasteners, worn
or broken parts, and leaky or loose fittings. Make sure all pins have
cotter pins and washers. Serious injury may occur from not maintaining
this machine in good working order. (SG-21)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-17

OPERATION

NOTE: When raising the mower, at least 1” clearance must be maintained between the driveline and the
mower deck. If necessary, place an upper lift stop on the 3-point hitch control lever to limit the height the
mower can be raised. OPS-R-0005_B

OPERATION
9.1 Tractor Pre-Operation Inspection/Service

OPERATION

Refer to the tractor operator’s manual to ensure a
complete pre-operation inspection and scheduled
service
is
performed
according
to
the
manufacturers recommendations. The following
are some of the items that require daily service and
inspection:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

Tire condition/air pressure
Wheel lug bolts
Steering linkage
PTO shield
SMV sign is clean and visible
Tractor’s lights are clean and functional
Tractor Seat belt is in good condition
Tractor ROPS is in good condition
ROPS is in the raised position
No tractor oil leaks
Radiator free of debris
Engine oil level and condition
Engine coolant level and condition
Power brake fluid level
Power steering fluid level
Fuel condition and level
Sufficient lubrication at all lube points
Air filter condition OPS-U-0030

9.2 Mower Pre-Operation Inspection/Service
Before each mower use, a complete inspection and service is required to ensure the mower is in a good and
safe working condition. Damaged and/or broken parts should be repaired and/or replaced immediately. To
ensure the mower is ready for operation, conduct the following. OPS-R-0007
•
•
•

•

Perform scheduled lubrication as detailed in
the maintenance section.
Ensure all decals are in place and legible.
Ensure the driveline is securely attached to
tractor. Make sure the driveline yoke locking
colalr is securely seated in the grooves of the
PTO shaft by pushing and pulling the yoke
several times.
Lift Type - Inspect that the 3-point hitch pins
are the proper size, correctly installed, and
secured to the tractor lift arms with retaining
pins inserted.
Pull Type - Inspect that the hitch bolt is the
correct size, that washers are inserted between
the drawbar and hitch clevis, and the locknut is
securely tightened. OPS-R-0037_A

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-18

OPERATION
•

Ensure deflectors and/or chainguards are in
position and not damaged. Replace worn,
broken, and missing pieces. OPS-R-0038

•
•
•

Lift-Type - Ensure the tailwheel beam position
support bolts are properly intalled and
tightened.
Pull-Type - Ensure that the tailwheel ratchet or
hydraulic cylinder is installed and retained
correctly to provide the desired cutting height.
Inspect all bolts and screws and tighten to the
recommended torque. OPS-R-0045

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-19

OPERATION

All Safety Shields, Guards and Safety devices including (but not
limited to) - the Deflectors, Chain Guards, Steel Guards, Gearbox
Shields, PTO integral shields, and Retractable Door Shields should
be used and maintained in good working condition. All safety devices should be
inspected carefully at least daily for missing or broken components. Missing, broken,
or worn items must be replaced at once to reduce the possibility of injury or death
from thrown objects, entanglement, or blade contact. (SGM-3)

OPERATION
•
•

OPERATION

•

•
•

•

Ensure the tractor PTO master shield and the
mower slip clutch shield are in place, lowered,
and in good condition.
Ensure the driveline integral shield is in good
condition and rotates freely.
Ensure the driveline slip clutch (if equipped) is
properly adjusted. OPS-R-0039

Inspect the gearbox oil level. A low oil level is a
warning sign that the gearbox may be cracked
or its seal is damaged and needs replacement.
Ensure the gearbox vent is in place and free
from clogs. OPS-R-0040

Inspect blades and blade bolts for looseness
and excessive wear. Make sure the mower is
securely blocked up before crawling beneath.
Replace damaged, worn and missing blades as
complete sets to maintain rotary balance during
operation.
Ensure carrier hub nut is tightened with the
cotter pin inserted and spread. OPS-R-0041

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-20

OPERATION
9.3 Cutting Component Inspection
Inspect blade pan and blade assembly for the following:
OPS-U-0031

OPERATION
Inspect the Blades daily for abnormal wear. REPLACE BOTH BLADES on that carrier
IMMEDIATELY if either blade has:
•
•
•
•
•

Become bent or deformed from it’s original shape or
Any cracks are visible, or
Deep gouges in the blade’s surface are persent, or
Gouges or chipped areas in the cutting edge are larger than 1/2”(12.7mm), or
The material on the leading edge has been worn away by more than 1/2(12.7mm)”

Failure to replace abnormally worn blades may lead to catastrophic failure of the blades and ejection of the
broken part with tremendous force which may cause serious bodily injury or death. OPS-U-0032

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-21

OPERATION
9.4 Blade Bolt Inspection

OPERATION

Inspect Blade Bolt Head daily for wear as followed:

Inspect the Blade Bolt Heads daily for abnormal wear. REPLACE BOTH BLADE BOLTS on
the Blades IMMEDIATELY if either blade bolts has:
• Visible cracks or
• If the blade bolt crown is worn off or
• If Blade Bolt has gouges or chipped areas.
Failure to replace abnormally worn blade bolts may lead to catastrophic failure of the blades and ejection of
the broken part which may cause serious bodily injury or death.
Always replace Blade Bolts with new bolts whenever replacing the Blades. OPS-U-0037

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-22

OPERATION
Tractor PRE-OPERATION Inspection
Mower ID#________________

Make ____________________

Date:

Shift

________________

____________________

Condition at
Start of Shift

Item

Specific Comments if
not O.K.

The flashing lights function properly
The SMV Sign is clean and visible
The tires are in good condition with proper pressure
The wheel lug bolts are tight
The tractor brakes are in good condition
The steering linkage is in good condition
There are no visible oil leaks
The hydraulic controls function properly
The ROPS or ROBS Cab is in good condition
The seatbelt is in place and in good condition
The 3-point hitch is in good condition
The drawbar pins are securely in place
The PTO master shield is in place
The engine oil level is full
The brake fluid level is full
The power steering fluid level is full
The fuel level is adequate
The engine coolant fluid level is full
The radiator is free of debris
The air filter is in good condition

Operator’s Signature:

DO NOT OPERATE an UNSAFE TRACTOR or MOWER

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-23

OPERATION

Before conducting the inspection, make sure the tractor engine is off, all
rotation has stopped and the tractor is in park with the parking brake
engaged. Make sure the mower is resting on the ground or securely blocked
up and all hydraulic pressure has been relieved.

OPERATION
Rotary Mower PRE-OPERATION Inspection
Mower ID#________________

Make ____________________

Date:

Shift

________________

____________________

OPERATION

Condition at
Start of Shift

Item

Specific Comments if
not O.K.

The Operator’s Manual is in the canister on the mower
All safety decals are in place and legible
The tongue/hitch connection bolts & pins are tight
There are no cracks in tongue or hitch
The tow chain is secured to the tractor & mower
The hydraulic cylinders pins are tight
There are no leaking or damaged hoses
The mower deck is clear of cut grass and debris
Chain guards/deflectors are in place & in good condition
Driveline/gearbox shields are in good condition
Driveline clutches are in good condition; not frozen
Driveline telescoping members & U-joints are lubricated
Driveline yokes are securely attached to PTO & mower
Gearbox mounting bolts are tight
Gearbox oil is at the proper level
Blade carrier retaining nut is tight
Blades are not chipped, cracked or bent
Blade bolts are tight
Wheel lug nuts are tight
Transport locks are in good condition

Operator’s Signature:

DO NOT OPERATE an UNSAFE TRACTOR or MOWER

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-24

OPERATION
10. DRIVING THE TRACTOR AND IMPLEMENT
Safe tractor transport requires the operator possess a thorough knowledge of the model being operated and
precautions to take while driving with an attached implement. Ensure the tractor has the capacity to handle the
weight of the implement and the tractor operating controls are set for safe transport. To ensure safety while
driving the tractor with an attached implement, review the following. OPS-U- 0012
Never run the Tractor engine in a closed building or without adequate ventilation. The
exhaust fumes can be hazardous to your health. (SG-23)

Before transporting the Tractor and Implement, determine the proper transport speeds for
you and the equipment. Make sure you abide by the following rules:
Test the tractor at a slow speed and increase the speed slowly. Apply the Brakes smoothly
to determine the stopping characteristics of the Tractor and Implement. As you increase
the speed of the Tractor the stopping distance increases.
Determine the maximum
transport speed not to exceed 20 mph (30 kph) for transporting this equipment.
Test the equipment at a slow speed in turns. Increase the speed through the turn only after
you determine that the equipment can be operated at a higher speed. Use extreme care
and reduce your speed when turning sharply to prevent the tractor and implement from
turning over. Determine the maximum turning speed for you and this equipment before
operating on roads or uneven ground.
Only transport the Tractor and Implement at the speeds which allow you to properly control
the equipment.
Be aware of the operating conditions. Do not operate the Tractor with weak or faulty brakes
or worn tires. When operating down a hill or on wet or rain slick roads, the braking distance
increases: use extreme care and reduce your speed. When operating in traffic always use
the Tractor’s flashing warning lights and reduce your speed. Be aware of traffic around you
and watch out for the other guy. (SG-19)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-25

OPERATION

OPERATION
10.1 Starting the Tractor

OPERATION

The procedure to start the tractor is model specific.
Refer to the tractor operator’s manual for starting
procedures for your particular tractor. Consult an
authorized dealer if the starting procedure is
unclear. Ensure the 3-point control lever is in the
lowered position and the PTO is disengaged before
starting the tractor. OPS-U-0033

10.2 Brake and Differential Lock Setting
Make sure the tractor brakes are in good
operating condition. Tractor brakes can be set to
operate independently allowing single rear wheel
braking action or locked together to provide
simultaneous rear wheel braking. FOR MOST
DRIVING AND OPERATING CONDITIONS, THE
BRAKE PEDALS SHOULD BE LOCKED
TOGETHER TO PROVIDE THE MOST
EFFECTIVE BRAKING ACTION.
Always disengage the tractor differential lock
when turning. When engaged the differential lock
will prevent or limit the tractor from turning. During
normal cutting conditions, locking the differential
provides no benefit and should not be used.
OPS-U- 0013
Be aware of the operating conditions. Do not operate the Tractor with weak or faulty brakes.
When operating down a hill or on wet or rain slick roads, the braking distance increases; use
extreme care and reduce your speed in these conditions. When operating in traffic, always
use the Tractor’s flashing warning lights and reduce your speed. Be aware of traffic around
you and watch out for the other guy.

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-26

OPERATION
10.3 Raising the Mower

10.4 Driving the Tractor and Mower
Start off driving at a slow speed and gradually increase your speed while maintaining complete control of the
tractor and mower. Moving slowly at first will also prevent the tractor from rearing up and loss of steering
control. The tractor should never be operated at speeds that cannot be safely handled or which will prevent
the operator from stopping quickly during an emergency. If the power steering or engine ceases operating,
stop the tractor immediately as the tractor will be difficult to control.
Perform turns with the tractor and mower at slow
speeds to determine how the tractor with an
attached mower handles a turn. Determine the
safe speed to maintain proper control of the tractor
when making turns. When turning with a towed
implement, the overall working length of the unit is
increased.
Allow additional clearance for the
mower when turning.
To avoid overturns, drive the tractor with care and
at safe speeds, especially when operating over
rough ground, crossing ditches or slopes, and
turning corners.
Tractor wheel tread spacing
should be increased when working on inclines or
rough ground to reduce the possibility of tipping.
Use extreme caution when operating on steep
slopes. Keep the tractor in a low gear when going
downhill. DO NOT coast or free-wheel downhill.
OPS-R-0019

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-27

OPERATION

Using the tractor 3-point hitch control lever, raise
the mower off the ground about 6”, or just high
enough to clear any ground obstacles. When
raising the mower, make sure all connection points
are securely attached and at least 1” clearance is
maintained between the driveline and the deck. If
necessary, place an upper lift stop on the 3-point
hitch control lever to limit the height the mower can
be raised to avoid driveline damage. OPS-R-0042

OPERATION

Be particularly careful when transporting the Implement with the Tractor. Turn curves or go
up hills only at a low speed and using a gradual steering angle. Rear mounted implements
move the center of gravity to the rear and remove weight from the front wheels. Make
certain, by adding front ballast, that at least 20% of the tractor’s weight is on the front wheels to prevent rearing
up, loss of steering control or Tractor tip-over. Slow down on rough or uneven surfaces to prevent loss of
steering control which could result in property damage or possible injury. Do not transport unless 3-Point lift
lever is fully raised and in the latched transport position. Dropping implement in transport can cause serious
damage to the tractor and/or Implement and possibly cause the operator or others to be injured or killed. (S3PT-2)

10.5 Crossing Ditches and Steep Inclines
When crossing ditches with steep banks or going up
sharp inclines, it is possible that the main driveline
inner profile will penetrate into the outer housing to its
maximum depth until the assembly becomes solid
(driveline is at its extreme shortest length). This type
of abusive operation can cause serious damage to
the tractor and mower drive by pushing the PTO into
the tractor and through the support bearings or
downward onto the PTO shaft, breaking it off.

Damage resulting from over-collapse of the driveline’s inner profile and its outer housing
may allow the driveline to come loose from the Tractor which could cause bodily injury to the
operator or bystanders and/or extensive damage to the Tractor or Implement. OPS-R-0020
When confronted with an incline or ditch, do not
approach from an angle which is perpendicular or
straight on as damage to or over-collapse of the
driveline may occur. OPS-R-0021_A

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-28

OPERATION
Inclines and ditches should be approached along a
line which is at an angle as shown. This type of
path will reduce the possibility of over-collapse of
the driveline and resulting damage. If the gradient
is so steep that such an approach increases the
possibility of a tractor roll-over, select an alternate
crossing path.

11. OPERATING THE TRACTOR AND IMPLEMENT
THE OPERATOR MUST COMPLETELY UNDERSTAND HOW TO OPERATE THE TRACTOR AND
IMPLEMENT AND ALL CONTROLS BEFORE ATTEMPTING TO OPERATE. The operator must read and
understand the Safety and Operation Sections of the implement and tractor operator’s manuals. These
manuals must be read and explained to any operator who cannot read. Never allow someone to operate the
implement and tractor without complete operating instructions.
Before starting any operation, the operator must become familiar with the area to be worked in and any
obstacles and hazards contained within to ensure safety to the operator, bystanders, and equipment. Special
attention should be paid to foreign debris, rough terrain, steep slopes, and passersby and animals in the area.
OPS-U- 0015

Extreme care should be taken when operating near loose objects such
as gravel, rocks, wire, and other debris. Inspect the area before
mowing. Foreign objects should be removed from the site to prevent
machine damage and/or bodily injury or even death. Any objects that cannot be removed
must be clearly marked and carefully avoided by the operator. Stop mowing immediately if
blades strike a foreign object. Repair all damage and make certain rotor or blade carrier is
balanced before resuming mowing. (SGM-5)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-29

OPERATION

When operating the tractor and mower across
slopes and inclines, through ditches, and other
uneven terrain conditions, it is important to maintain
sufficient deck to ground clearance. Blade contact
with the ground may cause soil, rocks and other
debris to be thrown out from under the mower
resulting in possible injury and/or property damage.
Ground contact also produces a severe shock load
on the mower drive and to the mower blades
resulting in possible damage and premature wear.
OPS-R-0022

OPERATION
Many varied objects, such as wire, cable, rope, or chains, can become entangled in the
operating parts of the mower head. These items could then swing outside the housing at
greater velocities than the blades. Such a situation is extremely hazardous and could result
in serious injury or even death. Inspect the cutting area for such objects before mowing. Remove any like
object from the site. Never allow the cutting blades to contact such items. (SGM-6)

OPERATION

11.1 Foreign Debris Hazards
Before mowing, inspect the area to make sure
there are no foreign objects that the mower blades
could hit or become entangled with. Remove all
foreign objects and debris. If objects are too big to
remove, mark them clearly and be sure to prevent
the mower blades from contacting them.
If you hit a solid object or foreign debris, stop the
mower and tractor at once. Immediately idle the
engine speed and disengage the PTO. Wait for all
mower rotating motion to stop, then raise the
mower and move the tractor and implement off the
object. Inspect the area and remove, or mark the
location of the debris. Inspect the condition of the
mower and make any needed repairs immediately.
Make sure the blades are not damaged and the
carrier is balanced before resuming operation.
Always wear your seat belt securely fastened and
only operate the tractor and mower with the ROPS
in the raised position. If the tractor or mower hits a
tree stump, rock, or bump, a sudden movement
could throw you off of the seat and under the
tractor and/or mower. The seat belt is your best
protection from falling off the tractor and the ROPS
provides protection from being crushed during a
tractor roll-over. OPS-R-0023

11.2 Bystanders/Passersby Precautions
If a bystander comes within 300 feet of the tractor while the mower is being operated, stop the tractor at once,
idle the engine and disengage the PTO. Do not engage the PTO again until all bystanders are well past the
300 foot distance. OPS-R-0024

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-30

OPERATION
Rotary Mowers are capable under adverse conditions of throwing
objects for great distances (300 feet or more) and causing serious injury
or death. Follow safety messages carefully.
STOP MOWING IF PASSERSBY ARE WITHIN 100 YARDS UNLESS:
-Front and Rear Deflectors, Chain Guards, or Bands are installed and in good, workable
condition;
-Mower sections or Wings are running close to and parallel to the ground without exposed
Blades;
-All areas have been thoroughly inspected and all foreign material such as rocks, cans,
glass, and general debris has been removed.
NOTE: Where there are grass and weeds high enough to hide debris that could be struck
by the blades, the area should be: inspected and large debris removed, mowed at an
intermediate height, inspected, closely with any remaining debris being removed, and
mowed again at desired final height. (This will also reduce power required to mow, reduce
wear and tear on the Mower drivetrain, spread cut material better, reduce streaking, and
make the final cut more uniform). (SRM-1)

11.3 Engaging the Power Take Off (PTO)
Before engaging the PTO, make certain that the area is clear of bystanders and passersby. The implement
must be completely lowered and the deck positioned at a safe operating height. NEVER engage the PTO with
the implement in the raised position.
Set the tractor engine speed at approximately 1,000 RPM before engaging the PTO. Shift the PTO control to
the on position, and slowly increase the engine speed until the PTO is operating at the rated speed. If you
hear unusual noises or see or feel abnormal vibrations, disengage the PTO immediately. Inspect the
implement to determine the cause of the noise or vibration and repair the abnormality. OPS-U- 0027

Do not let the Blades turn when the Mower Deck is raised for any
reason, including clearance or for turning. Raising the Mower deck
exposes the Cutting Blades which creates a potentially serious hazard
and could cause serious injury or even death from objects thrown from the Blades. (SRM-7)
Do not put hands or feet under mower decks. Blade Contact can result
in serious injury or even death. Stay away until all motion has stopped
and the decks are securely blocked up. (SGM-9)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-31

OPERATION

-Passersby are outside the existing thrown-object zone;

OPERATION
11.4 PTO RPM and Ground Speed

OPERATION

Ground speed for mowing will depend upon the height, type, and density of vegetation to be cut.
Recommended speed for efficient mower performance is between 2 and 5 mph(3-8 kph). Operate the mower
at its full rated PTO speed to maintain blade speed for a clean cut. Refer to the tractor operator’s manual or
the tractor instrument panel for the engine speed and gear to provide the required PTO and desired ground
speed. Make sure that the mower is operating at its full rated speed before entering the vegetation to be cut.
If it becomes necessary to temporarily regulate engine speed, increase or decrease the throttle gradually.
Ground speed is achieved by transmission gear selection and not by the engine operating speed. The
operator may be required to experiment with several gear range combinations to determine the best gear and
range which provides the most ideal performance from the mower and most efficient tractor operation. As the
severity of cutting conditions increase, the ground speed should be decreased by selecting a lower gear to
maintain the proper operating PTO speed. OPS-R-0025

Do not exceed the rated PTO speed for the Implement. Excessive PTO speeds can cause
Implement driveline or blade failures resulting in serious injury or death. (SG-26)

Mow at the speed that you can safely operate and control the tractor and mower. The
correct mowing speed depends on terrain condition and grass type, density, and height of
cut. Normal ground speed range is from 2 to 5 mph(3-8 kph). Use slow mowing speeds
when operating on or near steep slopes, ditches, drop-offs, overhead obstructions, power lines, or when
debris and foreign objects are to be avoided. (SGM-7)

11.5 Operating the Mower
Only operate the mower from the tractor operator’s seat with the seatbelt securely fastened. The tractor must
be equipped with a ROPS in the raised position or a ROPS cab.
The mower is designed to cut vegetation up to 3” in diameter. Sharp blades will produce a cleaner cut and
require less power. Travel at a speed that allows the mower sufficient time to cut through the vegetation and
maintain the PTO operating speed to prevent overloading the mower and tractor. Choose a driving pattern
that provides the maximum pass length and minimizes turning.
Under certain conditions, tractor tires may roll some grasses down preventing them from being cut at the
same height as the surrounding area. When this occurs, reduce the tractor ground speed while maintaining
the operating speed of the mower. A slower ground speed will permit grasses to at least partially rebound and
be cut. Taking a partial cut and/or reversing the direction of travel may also help produce a cleaner cut.
Avoid mowing in the reverse direction when possible. In situations where the mower must be backed to
access areas to be cut, make sure there are no persons or other foreign debris behind the mower before
mowing in reverse. When mowing in reverse, operate the tractor and mower at a reduced ground speed to
ensure tractor and mower control is maintained. OPS-R-0026_A

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-32

OPERATION
Do not mow with two machines in the same area except with Cab tractors with the windows
closed. (SGM-11)

Avoid mowing in reverse direction when possible. Check to make sure there are no
persons behind the mower and use extreme care when mowing in reverse. Mow only at a
slow ground speed where you can safely operate and control the tractor and mower.
Never mow an area that you have not inspected and removed debris or foreign material.
(SGM-8)

Follow these guidelines to reduce the risk of equipment and grass fires
while operating, servicing, and repairing the Mower and Tractor:
-Equip the Tractor with a fire extinguisher in an accesible location.
-Do Not operate the Mower on a Tractor with an underframe exhaust.
-Do Not smoke or have an open flame near the Mower and Tractor.
-Do Not drive into burning debris or freshly burnt areas.
-Ensure slip clutches are properly adjusted to prevent excessive slippage and plate heating.
-Never allow clippings or debris to collect near drivelines, slip clutches, and gearboxes.
Periodically shut down the Tractor and Mower and clean clippings and collected debris from
the mower deck. (SGM-12)

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-33

OPERATION

Mow only in conditions where you have clear visibility in daylight or with adequate artificial
lighting. Never mow in darkness or foggy conditions where you cannot clearly see at least
100 yards(90 m) in front and to the sides of the tractor and mower. Make sure that you can
clearly see and identify passersby, steep slopes, ditches, drop-offs, overhead obstructions,
power lines, debris and foreign objects. If you are unable to clearly see these type of items
discontinue mowing. (SGM-1)

OPERATION

When you get to the end of a pass, slightly raise the
mower (2-4”) before turning. Never raise the
mower entirely while the blades are turning. If the
mower must be raised higher than 12” from ground
level, disengage the tractor PTO and wait for all
mower rotation to come to a complete stop before
proceeding to raise the mower.
When turning, the angle between the tractor and
mower should not be so great that a clattering of
the U-joints occurs.
Sharp turns can cause
premature failure of the joints and place pressure
on the tractor PTO shaft and could cause extensive
mechanical damage to the mower and tractor.
OPS-R-0027_A

Do not let the Blades turn when the Mower Deck is raised for any
reason, including clearance or for turning. Raising the Mower deck
exposes the Cutting Blades which creates a potentially serious hazard
and could cause serious injury or even death from objects thrown from the Blades. (SRM-7)
Large, dense, or wet vegetation may need to be
mowed in two or more passes to achieve a uniform
cut. In such conditions, raise the cutting height to
12” or more on the first pass. OPS-R-0043

CY84 03/08
© 2008 Alamo Group Inc.

Operation Section 4-34

OPERATION
Then lower the mower to the desired height and
mow the vegetation a second time. If possible,
select a mowing pattern that is at a 90 degree angle
to the first pass to reduce streaking for a more
uniform cut. OPS-R-0044

Operation Section 4-35

OPERATION

Stay alert and watch for trees, low hanging limbs,
power lines, and other overhead obstacles and solid
ground objects while you are operating. Use care
to avoid hitting these items. OPS-R-0028_A

OPERATION
11.6 Shutting Down the Implement

OPERATION

To shut down the implement, first bring the tractor
to a complete stop. Then slow down the implement
by reducing the engine speed before disengaging
the PTO. Wait for all motion to stop before
proceeding to drive or shut down the tractor.

Park the tractor on a level surface, place the
transmission in park or neutral and apply the
parking brake, lower the attached implement to the
ground, shut down the engine, remove the key, and
wait for all motion to come to a complete stop
before exiting the tractor. OPS-U- 0016

12. DISCONNECTING THE MOWER FROM THE TRACTOR
Before disconnecting the mower, the PTO must be
disengaged and blade rotation at a complete stop.
Move the mower to a level storage location and
lower it to the ground. If the mower is not resting
securely on the ground, block the mower up
securely before attempting to disconnect it from
the tractor.
Use extreme care to keep feet and hands from
under the mower and clear of any pinch points
caused by the tractor hitch arms and mower pins.
OPS-R-0030_A

Never stand or allow another person to stand between a running Tractor and the Mower
when disconnecting the Implement from the Tractor 3-point hitch.

Operation Section 4-36

Lift-Type Mower - To disconnect the mower, first
extend the tractor 3-point hitch top link to remove
tension on the top link hitch pin. When the pin is
loose and easy to rotate, remove the pin from the
mower. Next remove both lower hitch pins.
Pull-Type Mower - To disconnect the mower, first
relieve hydraulic pressure by moving the control
lever back and forth several times. Lower the
parking jack and raise the mower until the tongue
clevis in no longer resting on the tractor drawbar
and is supported solely by the jack. Make sure that
the jack foot is securely resting at ground level or
supported by a block. Then remove the hitch bolt,
locknut, and washers. If a hydraulic cylinder was
used, remove its hose end from the tractor port and
secure it to the mower to prevent contact with dirt.
After disconnecting the 3 lift points, remove the
mower driveline from the tractor PTO shaft. Lay the
driveline down carefully to avoid damaging the
driveline or its shield. Do not let the driveline fall
into mud or dirt, which can contaminate the bearing
and shorten the life of the driveline. OPS-R-0031_A

Operation Section 4-37

OPERATION

Never unhitch without using the Tongue Jack. The Tongue is very heavy. Attempting to lift
the Tongue without using the Tongue Jack could cause strains or other injury. Allowing the
tongue to fall suddenly and unexpectedly could result in crushing injury. Use the Tongue
Jack for lifting the Implement only. Overloading the Tongue Jack can cause failure with
possible serious bodily injury or even death. (STI-4)

OPERATION
13. MOWER STORAGE
Properly preparing and storing the mower at the end of the season is critical to maintaining its appearance
and to help ensure years of dependable service. The following are suggested storage procedures:
•

OPERATION

•
•
•

Thoroughly clean all debris off the mower to
prevent damage from rotting grass and
standing water.
Lubricate all mower grease points and fill
gearbox oil levels as detailed in the
maintenance section.
Tighten all bolts and pins to the recommended
torque.
Check the mower for worn and damaged
parts.
Perform repairs and make
replacements immediately so that the mower
will be ready for use at the start of the next
season.
Store the mower in a clean, dry place with the
mower housing resting securely on blocks or
at ground level.
Keep the driveline yoke from sitting in water,
dirt and other contaminants.
Use spray touch-up enamel where necessary to prevent rust and maintain the appearance of the mower.

It is critical that driveline clutches slip when an obstacle or heavy load is encountered to avoid mower and/or
tractor damage. If the mower sits outside for an extended period of time or is exposed to rain and/or humid
air, the clutch lining plates must be inspected to ensure they are not frozen together from rust or corrosion. If
the mower has been exposed to such conditions, at the start of each mowing season, and any time it is
suspected that the slip clutch plates may be frozen together, readjust the slip clutch as detailed in Seasonal
Clutch Maintenance of the maintenance section in this manual. OPS-R-0032_A

Never allow children or other persons to ride on the Tractor or Implement.
Falling off can result in serious injury or death. (SG-10)

14. TRANSPORTING THE TRACTOR AND IMPLEMENT
Inherent hazards of operating the tractor and implement and the possibility of accidents are not left behind
when you finish working in an area. Therefore, the operator must employ good judgement and safe operation
practices when transporting the tractor and implement between locations. By using good judgement and
following safe transport procedures, the possibility of accidents while moving between locations can be
substantially minimized. OPS-U- 0017

Operation Section 4-38

OPERATION

If the tractor’s hydraulic pump is not independent of
the tractor PTO, or if the tractor PTO has to be run
to have hydraulic power, disconnect the mower
driveline from the tractor PTO output shaft. Secure
the driveline to the mower deck to prevent driveline
damage or loss during transport. OPS-R-0034

14.1 Transporting on Public Roadways
Extreme caution should be used when transporting the tractor and implement on public roadways. The tractor
must be equipped with all required safety warning features including a SMV emblem and flashing warning
lights to alert drivers of the tractor’s presence. Remember that roadways are primarily designed for
automotive drivers and most drivers will not be looking out for you, therefore, you must look out for them.
Check your side view mirrors frequently and remember that vehicles will approach quickly because of the
tractor’s slower speed. Be extremely cautious when the piece of equipment that you are towing is wider than
the tractor tire width and/or extends beyond your lane of the road.
Make sure that a proper size safety tow chain is secured between the tractor and implement before entering a
public road. OPS-U- 0019

Operation Section 4-39

OPERATION

Before transporting the tractor and mower, idle the
tractor engine, disengage the PTO and wait for all
mower moving parts to come to a complete stop.
Once all mower parts are completely stopped, raise
the mower to transport height. NOTE: When
raising the mower, maintain 1” clearance between
the driveline and mower deck. If additional mower
deck height is needed for safe transport, disconnect
the driveline from the tractor and secure its end to
the mower deck. The mower can then be raised to
the maximum lift height. OPS-R-0033_A

OPERATION

OPERATION
The SMV (Slow-Moving Vehicle) emblem is
universal symbol used to alert drivers of the
presence of equipment traveling on roadways at a
slow speed. SMV signs are a triangular bright
orange with reflective red trim for both easy day and
night visibility. Make sure the SMV sign is clean and
visible from the rear of the unit before transporting
the tractor and implement on a public roadway.
Replace the SMV emblem if faded, damaged, or no
longer reflective. OPS-U- 0020

Make sure that all tractor flashing warning lights,
headlights, and brake/tail lights are functioning
properly before proceeding onto public roads. While
newer model tractors have plenty of lighting to
provide warning signals and operating lighting, most
older models are only equipped with operating lights.
Consult an authorized tractor dealer for lighting kits
and modifications available to upgrade the lighting on
older tractor models. OPS-U- 0021

When operating on public roads, have
consideration for other road users. Pull to the side
of the road occasionally to allow all following traffic
to pass. Do not exceed the legal speed limit set in
your country for agricultural tractors. Always stay
alert when transporting the tractor and implement
on public roads. Use caution and reduce speed if
other vehicles or pedestrians are in the area. OPSU- 0022

Operation Section 4-40

OPERATION
Reduce speed before turning or applying the brakes.
Ensure that both brake pedals are locked together
when operating on public roads. OPS-U- 0023

Before transporting a loaded tractor and implement,
measure the height and width dimensions and gross
weight of the complete loaded unit. Ensure that the
load will be in compliance with the legal limits set for
the areas that will be traveled through. OPS-U- 0024

Use adequately sized and rated trailers and
equipment to transport the tractor and implement.
Consult an authorized dealer to determine the proper
equipment required. Using adequately sized chains,
heavy duty straps, cables and/or binders, securely tie
down both the front and rear of the tractor utilizing the
proper tie down locations as specified by the tractor
manufacturer. OPS-U- 0025

Operation Section 4-41

OPERATION

14.2 Hauling the Tractor and Implement

OPERATION

Arrange the chains so that when tightened, the
chains are pulling downward and against
themselves. Carefully tighten the securing chains or
other fasteners using boomers or binders to apply
maximum tension.
Use extreme care when
attaching and removing the securing devices as the
extreme tension involved when released has the
potential to inflict serious injury.
While hauling the tractor and implement, make
occasional stops to check that the tractor and
implement have not moved or shifted and that the
securing chains have maintained tension. If during
transport a hard braking, sharp turning, or swerving
action was performed, stop at the next safe location
to inspect the security of the load. OPS-U- 0026

Operation Section 4-42

OPERATION
15. TROUBLESHOOTING GUIDE
Possible Cause

Remedy

Not Cutting Clean

Blades dull.
Blade rotation incorrect.
Using Straight Blades
Carrier RPM too low.
Mower not leveled.

Sharpen or replace Blades.
Use correct Blade for Carrier.
Use Fan Blades in grass.
Increase PTO speed.
Adjust machine level (in very heavy
weeds, 1/2” to 1” low in front).
Use offset Adapter to move Mower to
the left.
Reduce ground speed.
Free blades.
Replace Blade Bolts.

Tires mashing down grass.
Ground speed too fast.
Blades locked back.
Blades riding up due to Blade
Bolt wear.
Blades bent up.
Breaking Blade Bolts

Worn Blade Bolt.

Tighten Blade Bolts to 300 ft./lbs.
(Right Hand Threads).
Replace Bolt.

Cutting Too High

Blades bent up.
Blade Carrier bent.
Blades on upside down.

Replace Blades.
Straighten or replace Blade Carrier.
Turn Blades right side up and tighten.

Mower Vibrates

Blade locked back.
Loosen locked Blade.
Drivelines not phased.
Replace Driveline.
Blade broken.
Replace Blades in sets.
Blade Carrier bent.
Repair or replace Carrier.
Blade Hub not properly seated
Remove Hub, check Key and Shaft,
on Shaft.
and replace or seat properly.
New Blade matched with worn Blade. Replace Blades in sets.

Mower Windrowing

Cutting heavy material.

Blades Wear Fast

Cutting in sandy or rocky conditions. Increase cutting height.
Blades too soft.
Replace Blades with hardened,
high- quality, Rhino Blades from the
manufacturer.

Operating with loose Blade Bolts.

Replace Blades.

Operation Section 4-43

Raise Mower and reduce ground
speed.

OPERATION

Problem

OPERATION

OPERATION
Blade Bolts Working Loose

Bolts not tightened.
Bolt hole elongated or oversized.
Locknut worn out.

Tighten Bolts to 300 ft./lbs.
Replace Blade Carrier.
Replace Locknut.

Broken Cross or Cups

Load too high for joint.

Use protective device with joint.
Check joint angles and phasing.
Slow down ground speed or raise
Mower.

End Galling of Cross and Cups Speed too high.

Reduce speed to 540 RPM.

Needle Rollers Have Brinelled
Into Cup and Cross

Load too high for joint.

Check for small joint angles.
Use protective device.
Check joint angles and phasing.

Shaft or Tube Twisted

Over-loaded.

Replace part and then slow down
ground speed or raise Mower.
Use protective device.
(See Clutch Maintenance).

Tube Broken in Welded Seam

Over-loaded.

Replace part.
(See Clutch Maintenance).

Yoke Broken at Ear Tip

Over-loaded.

Replace part.
(See Clutch Maintenance).

Gearbox Noisy

Improper backlash.
Rough gears.
Worn Bearing.

Refer to Maintenance Section.
Run in or change Gears.
Replace Bearing.

Slip Clutch Slipping
Excessively

Excessive load.

Reduce ground speed and/or raise
Mower.
Replace Springs.
Re-adjust Slip Clutch.
Reduce ground speed and material
intake.
Replace Facings.
Replace Facings.
Clean with emery cloth.

Springs weak.
Improper adjustment.
Too much power for Slip Clutch.
Friction Facings worn.
Oil on Facings.
Friction Facings glazed.
Oil Blowing out Vent Plug

Flat bottomed Vent Plug or
shallow cavity Plug.
Oil level too high.

Operation Section 4-44

Replace with proper Vent Plug,
Cavity in Oil Plug should be
approximately 5/8”
Lower oil level to Plug.

OPERATION
Gearbox Leaking

Driveline Integral Shields
Rattling or Not Turning Freely

Integral Shields deformed.
Nylon Bearing worn.

Replace Shield.
Replace Nylon Bearing.

Rapid Clevis Wear

Washer not used.

Install washers above and
below drawbar.

Clevis Bending or Spreading
Open.

Using Pin or Bolt not tightened.

Use 1” grade 5 or 8 Bolt & tighten Nut.

Operation Section 4-45

OPERATION

Bearings loose.
Vent Plug stopped up.
Oil level too high.
Gasket damaged.
Bolts loose.

Replace Seal.
Install Oil Seal.
Use EP140.
Replace Oil Seal and Shaft.
Replace Shaft or repair Race.
Replace Seal.
Replace Seal or use a sealant on O.D.
of Seal.
Adjust Bearings.
Open Vent Plug.
Drain oil to proper level.
Replace Gasket.
Tighten Bolts.

CY84 03/08

Damaged Oil Seal.
No Oil Seal.
Oil too light.
Bent Shaft.
Oil Seal Race rough.
Oil Seal installed wrong.
Oil Seal not sealing in the housing.

MAINTENANCE SECTION

MAINTENANCE
Before operating your Rotary Cutter, make sure it is properly lubricated and thoroughly inspected. Only a
minimum of time and effort is required to regularly lubricate and maintain this machine to provide long life and
trouble free operation.

MAINTENANCE

Always disengage the PTO before raising the Rotary Cutter for transporting or making
adjustments.

Lubrication
Do not let excess grease collect on or around parts,
particularly when operating in sandy areas. The
illustrations below shows lubrication points. The
chart gives the frequency of lubrication in hours,
based on normal operating conditions. Severe or
unusual conditions may require more frequent
lubrication (Figure Mnt-0009).

Use an SAE multi-purpose, lithium-type grease for
all locations shown. Be sure to clean the fitting
thoroughly before using grease gun. Daily
lubrication of the wing driveline slip joint is
necessary. Failure to maintain proper lubrication will
result in damage to U-joints, gearbox, and/or
driveshaft.

Lubrication Fitting Location
ITEM

DESCRIPTION

FREQUENCY

1.
2.
3.
4.
5.

U-Joints
Gearbox
Tail Wheel Pivot
Wheel Hubs
Telescoping

8 hours
Check Daily
10 hours
Weekly
8 hours

Maintenance Section 5-2

MAINTENANCE
Gearbox Lubrication
The Gearbox has been filled with lubricant to the
Test Plug Level prior to shipment. However, you
should check the oil level at Test Plug before
operating, and frequently thereafter.

NOTE: Overfilling the Gearbox will cause pressure to build up and cause Oil Seals to leak.
ATTENTION: If the Gearbox suddenly starts making an unusual noise, stop at once, check for leaks, and refill
Gearbox as required.

Tail Wheel Lubrication
Tail Wheel Bearings are packed at the factory with
heavy-duty bearing grease. Grease Fittings are
provided in the Wheel Hub and Tail Wheel Beam.
Grease after 10 hours of use (Figure Mnt-0004).

Recommended lubricant is SAE EP85W14QT with EP additives for extreme pressure and temperature, with a
APL-GI-5 Service rating. This lube also has tack agent added so oil sticks to parts when box is not running.
Gearbox capacity is 2 Quarts.

Maintenance Section 5-3

MAINTENANCE

The gearbox should not require additional lubricant
unless the box is cracked or a seal is leaking. It is
recommended that the oil level plug be removed
after every 8 to 10 hours of operation and oil added
until it runs out Test Plug hole. The Test Plug is
located on the rear of the Gearbox. Filler Plug is
located on top of Gearbox (Figure Mnt-0011).

MAINTENANCE
Driveline Lubrication

MAINTENANCE

Grease Fittings are located on the Cross Assembly of each U-Joint and on the telescoping tubes. Grease the
U-Joint after each 8 hours of use. Do not force grease through the Needle Cup Assemblies. Grease the
telescoping tubes after every 8 hours use. Some PTO-to-Hitch connections may necessitate cutting a hole in
the shields to be able to align the Grease Fitting holes for lubrication. Lubricate the shield bearings every 16
hours (Figure Mnt-0012).

Driveline Shield - Pull-Type
The Driveline Integral Shields should not become
dented or otherwise damaged. The Integral Shield
Assembly has a Nylon Bearing at each end and
should turn freely (Figure Mnt-0012). This nylon
bearing should require lubrication every 8 hours. To
remove the Integral Shields for replacement or
repair, turn the three Nylon Nuts 1/4 turn in the
Shield Slots of the Cone and Tube and remove
them. Slip the Shield Cone Assembly off inner
section of the Driveline. Install the new or repaired
Shield on the Driveline. Place the split Nylon
Bearing over the Driveline Housing of Shaft against
the Yoke and in the Bearing groove. Install shield
over the Housing so the Nylon Bearing fits into the
Shield Bearing Retainer. Align a slot in the Shield
Cone with one of the slots in the Shield. Put one of
the Nylon Nuts back in through the aligned slots
and turn until it is perpendicular to the slots. Add the
other two Nylon Nuts.

Make certain that the Driveline Integral Shields are free to telescope and rotate around the
Driveline without binding.

Maintenance Section 5-4

MAINTENANCE
Protective, Integral Shields - Lift-Type

Driveline Integral Shields must be in place at all times when operating.

Maintenance Section 5-5

MAINTENANCE

Protective Driveline Shields should be installed on Drivelines as shown in Figure Mnt-0013 below. The
protective Integral Shields are assembled onto nylon bearings and should turn freely - but should not spin.
Greasing the nylon bearings is not required but will not harm them. Each Shield Bearing is composed of two
nylon bearing halves. They may be removed by prying the locking lug of the nylon bearing out of the slot in the
Shield and pulling the bearing out through the slot. To replace the nylon bearings, align the slot in the shield
over the groove in the Yoke of the Driveline. Insert the beveled tip of the nylon bearing into the slot of the
shield and push into place. Push the locking lug of the nylon bearing into the slot until it snaps into place.

MAINTENANCE
Slip Clutch
Avoid overheating of the Slip Clutch by too long or too frequent slipping, as this can damage the friction plates
and limiter parts. When checking Slip Clutch for overheating, DO NOT touch with hand. Slip Clutch could be
extremely hot and cause severe burn.

MAINTENANCE

If an adjustment is required, this may be done in the field by following the procedure outlined below. Following
these instructions will give maximum rated torque and long life (Figure Mnt-0006).
1. With the three Capscrews (8) backed out until the points are below the surface of the circular Adjusting Nut
(7), run Adjusting Nut up finger-tight, or slightly less than finger-tight.
2. Alternately tighten the hardened, cup point Capscrews (8) no more than one-half turn at a time until the
Capscrew heads “Bottom Out”. Do not over tighten the Capscrews nor completely flatten the Spring
Washers (5).
If the Hub is removed from the Shaft for any reason, the Shaft and Hub should be coated with a heavy grease
before reassembly to prevent Hub from freezing to Shaft.

Seasonal Slip Clutch Maintenance
It is important that the slip clutch slips when an
obstacle or load heavier than the setting is
encountered. Before using the cutter each season,
use the following procedure to make sure the slip
clutch will slip and give the overload protection
required.
1. Loosen Bolts (8) until gap between adjusting
nut (7) and guide ring is approximately 1/16”.
2. Attach machine to tractor, set engine at
approximately half throttle and quickly engage
PTO. This procedure will break slip clutch
facings loose and allow the proper torque to be
maintained.
3. Return the bolts to their original position as
described above.
NOTE: If machine sits outside longer than 30 days
and is exposed to rain and humid air, the clutches
should be removed from machine and stored in a
dry area. Slip Clutch facings will soak up moisture
and cause the metal plates to rust badly. When this
occurs, the break-away torque increases greatly
and damage to gearbox, driveline, or tractor PTO
can occur.
When attaching PTO yoke to tractor PTO shaft, it is important that spring-activated locking
collar slides freely and locking balls are seated in groove on PTO shaft. A loose shaft could
slip off and result in personal injury or damage to cutter.

Maintenance Section 5-6

MAINTENANCE
Blade Servicing
Inspect blades before each use to determine that they are properly installed and in good condition. Replace
any blade that is bent, excessively nicked, worn, or has any other damage. Small nicks can be ground out
when sharpening.

Use only original equipment blades on this cutter. They are made of special heat-treated
alloy steel. Substitute blades may not meet specifications and may fail in a hazardous
manner that could cause injury.

Blade Sharpening
Always sharpen both blades at same time to
maintain balance.
Follow original sharpening
pattern as shown in Figure Mnt-0008. Always
sharpen blades by grinding. DO NOT heat and
pound out edge. Do not sharpen blade to a razor
edge, but leave a 1/16" blunt edge. Do not sharpen
back side of blade.

Avoid personal injury. Always
block the cutter up to prevent if from falling when the blades and or carrier are being
serviced.

Maintenance Section 5-7

MAINTENANCE

When sharpening blades, grind each blade the same amount to maintain balance. The
difference in blade weights should not exceed 1 ounce. Unbalanced blades will cause
excessive vibration which can damage gear box bearings. Vibration may also cause
structural cracks in cutter housing.

MAINTENANCE
Blade Removal

MAINTENANCE

To remove blades for sharpening or replacement, remove the cover plate on deck of cutter near gear box.
Remove lock nut from blade bolt. NOTE: Inspect lock nut after removal and replace if threads are damaged.
Always replace nut when replacing blade bolt. When installing blades be sure and check blade bolt pivot
diameter for wear. Replace bolt if worn more than 1/4 inch at any point. Install blade bolts with partially worn
side of bolt either toward or away from center. Tighten lock nut to 350 ft. lbs.
Avoid personal injury. Blade and/or blade carrier removal should be done only with the
tractor engine shut off, key removed, in neutral, parking brake on, and PTO disengaged and
the cutter blocked in the raised position.

Blade Carrier Removal
Remove cotter pin and loosen slotted nut on gearbox shaft. Loosen but do not remove the nut until the blade
carrier is loosened. Use a suitable 2 jaw gear puller to pull carrier off tapered gearbox shaft. If gear puller is not
available use long bar inserted through blade bolt access hole with end against rotor bar. Strike opposite end of
bar with sledge hammer. Rotate blade carrier 180 degrees and repeat process.

Blade Carrier Installation
Clean the hub on the blade carrier and the output shaft on the gearbox. Position carrier on the gearbox output
shaft and install hardened washer, slatted nut, and cotter pin.
Tighten nut holding blade carrier to minimum 450 ft. pounds, strike the carrier near the hub several times with a
heavy hammer to seat the hub. Use a suitable spacer over the nut to prevent damage to the nut and threads.
Retighten the nut to 450 ft. pounds. Install cotter pin and spread.
Always recheck gearbox output shaft slotted blade carrier retaining nut torque after a few
hours operation.
Avoid personal injury. Do not work under cutter without support blocks to keep frame from
falling.

Maintenance Section 5-8

MAINTENANCE
Storage
Your rotary cutter represents an investment from which you should get the greatest possible benefit.
Therefore, when the season is over, the cutter should be thoroughly checked and prepared for storage so that
a minimum amount of work will be required to put it back into operation for the next season. The following are
suggested storage procedures:
1. Thoroughly clean the cutter.
3. Tighten all bolts and pins to the recommended torque.
4. Check the cutter for worn or damaged parts. Make replacements immediately.
5. Store the cutter in a clean, dry place with the cutter housing resting on blocks.
6. Use spray touch-up enamel where necessary to prevent rust and maintain the appearance of the cutter.

Proper Torque For Fasteners
The chart lists the correct tightening torque for fasteners. When bolts are to be tightened or replaced, refer to
this chart to determine the grade of bolts and the proper torque except when specific torque values are
assigned in manual text.
Recommended Torque in Foot Pounds Unless Otherwise Stated in the Manual*
NOTE: These values apply to fasteners as received from supplier, dry or when lubricated with normal engine
oil. They do not apply if special graphited or molydisulphide greases or other extreme pressure lubricants are
used. This applies to both UNF fine and UNC coarse threads.

Maintenance Section 5-9

MAINTENANCE

2. Lubricate the cutter as covered in Maintenance Section.

RHINO

LIMITED WARRANTY
1.

LIMITED WARRANTIES

1.01.

Rhino warrants for one year from the purchase date to the original non-commercial, governmental, or municipal purchaser
(“Purchaser”) and warrants for six months to the original commercial or industrial purchaser (“Purchaser”) that the goods
purchased are free from defects in material or workmanship.

1.02.

Manufacturer will replace for the Purchaser any part or parts found, upon examination at one of its factories, to be defective under
normal use and service due to defects in material or workmanship.

1.03.

This limited warranty does not apply to any part of the goods which has been subjected to improper or abnormal use, negligence,
alteration, modification, or accident, damaged due to lack of maintenance or use of wrong fuel, oil, or lubricants, or which has
served its normal life. This limited warranty does not apply to any part of any internal combustion engine, or expendable items such
as blades, shields, guards, or pneumatic tires except as specifically found in your Operator’s Manual.

1.04.

Except as provided herein, no employee, agent, Dealer, or other person is authorized to give any warranties of any nature on
behalf of Manufacturer.

REMEDIES AND PROCEDURES.

2.01.

This limited warranty is not effective unless the Purchaser returns the Registration and Warranty Form to Manufacturer within 30
days of purchase.

2.02.

Purchaser claims must be made in writing to the Authorized Dealer (“Dealer”) from whom Purchaser purchased the goods or an
approved Authorized Dealer (“Dealer”) within 30 days after Purchaser learns of the facts on which the claim is based.

2.03.

Purchaser is responsible for returning the goods in question to the Dealer.

2.04.

If after examining the goods and/or parts in question, Manufacturer finds them to be defective under normal use and service due to
defects in material or workmanship, Manufacturer will:
(a)Repair or replace the defective goods or part(s) or
(b)Reimburse Purchaser for the cost of the part(s) and reasonable labor charges (as determined by Manufacturer) if Purchaser
paid for the repair and/or replacement prior to the final determination of applicability of the warranty by Manufacturer.

The choice of remedy shall belong to Manufacturer.

2.05.

Purchaser is responsible for any labor charges exceeding a reasonable amount as determined by Manufacturer and for returning
the goods to the Dealer, whether or not the claim is approved. Purchaser is responsible for the transportation cost for the goods or
part(s) from the Dealer to the designated factory.

LIMITATION OF LIABILITY.

3.01.

MANUFACTURER DISCLAIMS ANY EXPRESS (EXCEPT AS SET FORTH HEREIN) AND IMPLIED WARRANTIES WITH
RESPECT TO THE GOODS INCLUDING, BUT NOT LIMITED TO, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.

3.02.

MANUFACTURER MAKES NO WARRANTY AS TO THE DESIGN, CAPABILITY, CAPACITY, OR SUITABILITY FOR USE OF
THE GOODS.

3.03.

EXCEPT AS PROVIDED HEREIN, MANUFACTURER SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO PURCHASER OR
ANY OTHER PERSON OR ENTITY WITH RESPECT TO ANY LIABILITY, LOSS, OR DAMAGE CAUSED OR ALLEGED TO BE
CAUSED DIRECTLY OR INDIRECTLY BY THE GOODS INCLUDING, BUT NOT LIMITED TO, ANY INDIRECT, SPECIAL,
CONSEQUENTIAL, OR INCIDENTAL DAMAGES RESULTING FROM THE USE OR OPERATION OF THE GOODS OR ANY
BREACH OF THIS WARRANTY. NOT WITHSTANDING THE ABOVE LIMITATIONS AND WARRANTIES, MANUFACTURER’S
LIABILITY HEREUNDER FOR DAMAGES INCURRED BY PURCHASER OR OTHERS SHALL NOT EXCEED THE PRICE OF
THE GOODS.

3.04.

NO ACTION ARISING OUT OF ANY CLAIMED BREACH OF THIS WARRANTY OR TRANSACTIONS UNDER THIS
WARRANTY MAY BE BROUGHT MORE THAN TWO (2) YEARS AFTER THE CAUSE OF ACTION HAS OCCURRED.

MISCELLANEOUS.

4.01.

Proper Venue for any lawsuits arising from or related to this limited warranty shall be only in Guadalupe County, Texas.

4.02.

Manufacturer may waive compliance with any of the terms of this limited warranty, but no waiver of any terms shall be deemed to
be a waiver of any other term.

4.03.

If any provision of this limited warranty shall violate any applicable law and is held to be unenforceable, then the invalidity of such
provision shall not invalidate any other provisions herein.

4.04.

Applicable law may provide rights and benefits to purchaser in addition to those provided herein.

KEEP FOR YOUR RECORDS
ATTENTION: Purchaser should fill in the blanks below for his reference when buying repair parts and/or for proper machine identification when
applying for warranty.
Rhino Implement Model_____________________________ Serial Number___________________________
Date
Dealer__________________________________
ATTENTION:
READ YOUR OPERATOR'S MANUAL

Purchased___________________________________

RHINO®

1020 S Sangamon Ave.
Gibson City, IL 60936
800-446-5158
Email: parts@servis-rhino.com

TO THE OWNER/OPERATOR/DEALER

In addition to the standard Limited Warranty shown on the facing page, Servis-Rhino also provides:
1.) ONE-YEAR (12 months) {or 6 month for Commercial/Industrial Users} LIMITED WARRANTY on the
DRIVELINE components provided they have been properly maintained† and have not been subjected to
abuse or mis-use.
2.) FIVE-YEAR (60 months) LIMITED WARRANTY* on GEARBOX components provided they have been properly
maintained† and have not been subjected to abuse or mis-use except as limited below.
* WARRANTY LIMITATIONS - GEARBOX
A) Warranty is ONE-YEAR (12 MONTHS) for Seals (After one year, seals are considered to be WEARING
PARTS and replacement is the users' responsibility.)
B) Users' Gearboxes may be rebuilt by Servis-Rhino or replaced by new or rebuilt Gearboxes at the option
of Servis-Rhino.
† NOTE - “properly maintained” specifically includes, but is not limited to:
A) Running Gearboxes with the proper amount of the correct lubricant.
B) Adjusting Slip Clutches correctly to provide proper protection for Driveline and Gearbox Components.

To keep your implement running efficiently and safely, read your manual thoroughly and follow these directions and
the Safety Messages in this Manual. The Table of Contents clearly identifies each section where you can easily find
the information you need.
The OCCUPATIONAL SAFETY AND HEALTH ACT (1928.51 Subpart C) makes these minimum safety
requirements of tractor operators:
REQUIRED OF THE OWNER:
1. Provide a Roll-Over-Protective Structure that meets the requirements of this Standard; and
2. Provide Seatbelts that meet the requirements of this paragraph of this Standard and SAE J4C; and
3. Ensure that each employee uses such Seatbelt while the tractor is moving; and
4. Ensure that each employee tightens the Seatbelt sufficiently to confine the employee to the protected
area provided by the ROPS.
REQUIRED OF THE OPERATOR:
1. Securely fasten seatbelt if the tractor has a ROPS.
2. Where possible, avoid operating the tractor near ditches, embankments, and holes.
3. Reduce speed when turning, crossing slopes, and on rough, slick, or muddy surfaces.
4. Stay off slopes too steep for safe operation.
5. Watch where you are going - especially at row ends, on roads, and around trees.
6. Do not permit others to ride.
7. Operate the tractor smoothly - no jerky turns, starts, or stops.
8. Hitch only to the drawbar and hitch points recommended by the tractor manufacturer.
9.z When the tractor is stopped, set brakes securely and use park lock, if available.

CY84
ROTARY CUTTER
CY84-SOM-03/08
Printed U.S.A

P/N 00771528C

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Create Date                     : 2008:04:02 09:33:06Z
Creator Tool                    : FrameMaker 8.0
Modify Date                     : 2008:04:09 14:31:03-05:00
Metadata Date                   : 2008:04:09 14:31:03-05:00
Format                          : application/pdf
Creator                         : dgonzalez
Title                           : CY84 Book.book
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Has XFA                         : No
Page Count                      : 146
Author                          : dgonzalez

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Servis Rhino Cy84 Users Manual Book

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CY84 to the manual d6a0a458-ee1c-443a-9881-9ca52eb7abf4

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