Husqvarna Rz4222F 966659401 Users Manual OM, RZ4621, RZ4621CA, RZ5424, RZ4222F, RZ4621 BF, RZ4623, RZ4824F, 2010 09, ZERO TURN

RZ5424 966659301 to the manual d58c8c5a-b3a7-4dd3-899e-6b512ceab97e

2015-01-24

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Operator Manual

RZ4621 / 966659101
RZ5424 / 966659301
RZ4621 BF / 966676501
RZ4824F / 966678301

RZ4621 CA / 966659201
RZ4222F / 966659401
RZ4623 / 966678201
RZ5424 / 966691901

Please read the operator’s manual carefully and make sure you
understand the instructions before using the machine.

When this product is worn out and no longer used, it
should be returned to the reseller or other party for
recycling.

In order to implement improvements, specifications and designs can be altered without prior
notification.
Note that no legal demands can be placed based on the information contained in these instructions.
Use only original parts for repairs. The use of other parts voids the warranty.
Do not modify or install non-standard equipment to the unit without consent from the manufacturer.
Modifications to the unit may cause unsafe operations or damage the unit.

Contents
INTRODUCTION................................................................ 5
Driving and Transport on Public Roads....................... 5
Towing.......................................................................... 5
Operating..................................................................... 5
Good Service............................................................... 6
Symbols and Decals................................................... 7
Safety.............................................................................. 9
Safety Instructions....................................................... 9
Personal Safety Equipment....................................... 11
Slope Operation......................................................... 11
Safe Handling of Gasoline......................................... 13
General Maintenance................................................ 14
Transport.................................................................... 16
Controls...................................................................... 17
Control Locations....................................................... 17
Steering Control Levers............................................. 18
Parking Brake............................................................ 19
Throttle Control.......................................................... 19
Blade Switch.............................................................. 19
Ignition Switch........................................................... 20
Choke Control............................................................ 20
Fuses......................................................................... 20
Fuel Tank.................................................................... 21
Fuel Shut Off Valve.................................................... 22
Cutting Height Adjuster............................................. 22
Seat Adjustment Lever.............................................. 23
Hour Meter................................................................. 23
Tracking Knob........................................................... 23
Operation..................................................................... 24
Training...................................................................... 24
Steering..................................................................... 24
Before Starting........................................................... 25
Starting the Engine.................................................... 25
Jumper Cables.................................................... 28
Running..................................................................... 29
Operating On Hills..................................................... 30

Mowing Tips.............................................................. 31
Stopping the Engine.................................................. 32
Manual Transport....................................................... 33
Maintenance................................................................ 34
Maintenance Schedule.............................................. 34
Battery....................................................................... 36
Safety System............................................................ 37
Fuel Pump Air Filter................................................... 37
Tire Pressures............................................................ 38
Parking Brake............................................................ 38
V-belts........................................................................ 39
Deck Belt............................................................. 39
Cutting Blades........................................................... 40
Blade replacement.............................................. 40
Adjusting the Mower Deck........................................ 41
Leveling deck...................................................... 41
Anti-scalp Rollers................................................. 42
Caster Wheels........................................................... 43
Cleaning.................................................................... 43
Hardware................................................................... 43
LUBRICATION.................................................................. 44
Front Wheel Mount..................................................... 45
Front Wheel Bearings................................................ 45
Deck Spindles........................................................... 45
Transmission.............................................................. 45
TROUBLESHOOTING...................................................... 46
STORAGE........................................................................ 48
Winter Storage........................................................... 48
Service....................................................................... 48
schematics................................................................... 49
TECHNICAL DATA........................................................... 50
Torque Specifications................................................ 56
Accessories............................................................... 56
CONFORMITY CERTIFICATES......................................... 57
SERVICE JOURNAL......................................................... 58

WARNING!
Failure to follow cautious operating practices can result in serious injury to the
operator or other persons. The owner must understand these instructions, and must
allow only trained persons who understand these instructions to operate the mower.
Each person operating the mower must be of sound mind and body and must not be
under the influence of any mind altering substance.

WARNING!
Engine exhaust, some of its constituents, and certain vehicle components contain or
emit chemicals known to the State of California to cause cancer and birth defects or
other reproductive harm.

WARNING!
Battery posts, terminals and related accessories contain lead and lead compounds,
chemicals known to the State of California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.

INTRODUCTION
Congratulations

Towing

Thank you for purchasing a Husqvarna ride-on
mower. This machine is built for superior efficiency
to rapidly mow primarily large areas. A control panel
easily accessible to the operator and a hydrostatic
transmission regulated by steering controls both
contribute to the machine’s performance.
This manual is a valuable document. Read the
contents carefully before using or servicing the
machine. The following of instructions (use, service,
maintenance) by all who operate this machine is
important for the safety of the operator and others.
It can also considerably increase the life span of the
machine and increase its resale value.
If you sell your machine, be sure to give the operator’s
manual to the new owner.
The final chapter of this operator’s manual provides a
Service Journal. Ensure that service and repair work
are documented. A well-kept service journal reduces
service costs for the maintenance and affects the
machine’s resale value. Please contact your dealer for
more information. Take the operator’s manual along
when the machine is taken to your dealer for service.

If machine is equipped with a tow hitch, use extreme
caution when towing. Never allow children or others in
or on the towed equipment. Make wide turns to avoid
jack-knifing. Travel slowly and allow extra distance to
stop.
Do not tow on sloped ground. The weight of the towed
equipment may cause loss of traction and loss of
control.
Follow the manufacturer's recommendation for weight
limits for towed equipment. Do not tow near ditches,
canals, and other hazards.

General
In this operator’s manual, left and right, backward and
forward are used in relation to the machine’s normal
driving direction.
Continuous dedication to improve our products
require that specifications and design are subject to
change without notice.

Driving and Transport on Public Roads
Check applicable road traffic regulations before
transporting on public roads. If the machine is
transported, you must always use approved fastening
equipment and ensure that the machine is well
anchored. DO NOT operate this machine on public
roadways.

Operating
This machine is constructed only for mowing grass
on lawns and even ground without obstacles such
as stones, tree stumps, etc. The machine can also
be used for other tasks when equipped with special
accessories provided by the manufacturer. Operating
instructions for the accessories are provided with
delivery. All other types of uses are incorrect. The
manufacturer’s directions concerning operation,
maintenance, and repairs must be carefully followed.
Lawn mowers and all power equipment, can be
potentially dangerous if used improperly. Safety
requires good judgement, careful use in accordance
with these instructions and common sense.
The machine must only be operated, maintained,
and repaired by persons familiar with the
machine’s special characteristics and who are also
knowledgeable about the safety instructions. Use only
approved repair parts to maintain this machine.
Accident prevention regulations, other general safety
regulations, occupational safety rules, and traffic
regulations must be followed without fail.
Unauthorized modifications to the design of the
machine may absolve the manufacturer from liability
for any resulting personal injury or property damage.

INTRODUCTION
Good Service
Husqvarna's products are sold only in specialized
retail stores with complete service. This ensures that
you as a customer receive only the best support and
service. Before the product is delivered, the machine
has, for example, been inspected and adjusted by
your retailer. See the certificate in the Service Journal
in this operator’s manual.
When you need spare parts or support in service
questions, warranty issues, etc., please consult
the following professional:

This Parts Manual belongs to the machine with
the manufacturing number:

Manufacturing Number
The machine’s manufacturing number can be found on
the printed plate affixed to the engine compartment.
Stated on the plate, from the top are:
• The machine’s type designation (I.D.).
• The manufacturer’s type number (Model).
• The machine’s serial number (Serial no.)
Please have the type designation and serial number
available when ordering spare parts.
The engine’s manufacturing number is stamped on
one of the valve covers.
The plate states:
• The engine’s model.
• The engine’s type.
• Code
Please have these available when ordering spare
parts.
The wheel motors and hydrostatic pumps have a
barcode decal affixed at the rear.

Engine

symbols and decals
These symbols are found on the machine and in the
operator’s manual.
Study them carefully so that you know what they
mean.
IMPORTANT INFORMATION

WARNING!
Xxxx xxxxxx xxxxx xxxx xxxxxxxxx
xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx
xxxxxx.

Used in this publication to notify the reader of a risk
of personal injury or death, particularly if the reader
should neglect to follow instructions given in the
manual.

Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx
xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx.

Used in this publication to notify the reader of a risk
of material damage, particularly if the reader should
neglect to follow instructions given in the manual.
Used also when there is a potential for misuse or
misassembly.

R N

Reverse Neutral Fast

Slow

Warning!
Parking Brake
CE conformity

marking. Only for
European market

Choke Fuel

Do not stand here,

Use protective glasses
Noise emissions to the surroundings
in accordance with the European
Union’s directive. The machine’s
emission is stated in the chapter
TECHNICAL DATA and on the
decals.
Only machines for European market

Electromagnetic
Compatibility (EMC)
Compliance

Use protective gloves

symbols and decals

Read

Operator’s
Manual

Shut off engine and
remove key before
performing any
maintenance or repair work

Whole body
Severing of fingers

exposure to
and toes

thrown objects

Keep a safe
distance from
the machine

Do not open or
remove safety
shields while
engine is running

Use on slopes No passengers
no greater
than 10°

Careful backing up,
watch for other
people

Careful going
forward, watch for
other people

Battery acid is corrosive, explosive and flammable

Moving sharp blades under cover

Warning! Rotating blades,
keep away from the
discharge deck

Do not touch parts

SAFETY
Safety Instructions
These instructions are for your safety. Read them carefully.
WARNING!
This symbol means that important safety instructions need to be emphasized. It concerns
your safety.
IMPORTANT: THIS CUTTING MACHINE IS CAPABLE OF AMPUTATING HANDS AND FEET AND THROWING
OBJECTS. FAILURE TO OBSERVE THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS
INJURY OR DEATH.
General Operation
• Read, understand, and follow all instructions on
the machine and in the manual before starting.
• Do not put hands or feet near rotating parts or
under the machine. Keep clear of the discharge
opening at all times.
• Only allow responsible adults, who are familiar
with the instructions, to operate the machine.
• Clear the area of objects such as rocks, toys, wire,
etc., which could be picked up and thrown by the
blades.
• Be sure the area is clear of bystanders before
operating. Stop machine if anyone enters the
area.
• Never carry passengers. The machine is only
intended for use by one person.
• Do not mow in reverse unless absolutely
necessary. Always look down and behind before
and while backing.
• Never direct discharged material toward anyone.
Avoid discharging material against a wall or
obstruction. Material may ricochet back toward
the operator. Stop the blades when crossing
gravel surfaces.
• Do not operate machine without the entire grass
catcher, discharge guard, or other safety devices
in place and working
• Slow down before turning.
• Never leave a running machine unattended.
Always turn off blades, set parking brake, stop
engine, and remove keys before dismounting.
• Disengage blades when not mowing. Shut
off engine and wait for all parts to come to a
complete stop before cleaning the machine,
removing the grass catcher, or unclogging the
discharge guard.
• Operate machine only in daylight or good artificial
light.

Read the operator’s manual before starting the
machine

Clear the area of objects before mowing

8011-512

8011-513

SAFETY
•
•
•
•
•

•
•

•

•
•

Do not operate the machine while under the
influence of alcohol or drugs.
Watch for traffic when operating near or crossing
roadways.
Use extra care when loading or unloading the
machine into a trailer or truck.
Always wear eye protection when operating
machine.
Data indicates that operators age 60 years and
above are involved in a large percentage of riding
mower-related injuries. These operators should
evaluate their ability to operate the riding mower
safely enough to protect themselves and others
from serious injury.
Follow the manufacturer’s recommendation for
wheel weights or counterweights.
Anyone who operates this machine must first read
and understand this Operation Manual. Local laws
may regulate the age of the user.
Keep machine free of grass, leaves or other
debris buildup which can touch the hot exhaust
or engine parts and burn. Do not allow the mower
deck to plow leaves or other debris, causing
buildup to occur.
Clean any oil or fuel spillage before operating or
storing the machine.
Allow machine to cool before storage.

Never take passengers

8011-520

WARNING!
Engine exhaust and certain vehicle
components contain or emit
chemicals considered to cause
cancer, birth defects, or other
reproductive system damage. The
engine exhaust contains carbon
monoxide, which is a odorless,
colorless, poisonous gas. Do not use
the machine in enclosed spaces.

SAFETY
Personal Safety Equipment
WARNING!
When using the machine, approved personal protective equipment (shown in illustrations)
shall be used. Personal protective equipment cannot eliminate the risk of injury but it
will reduce the degree of injury if an accident does happen. Ask your retailer for help in
choosing the right equipment.
•
•
•
•
•
•
•

Make sure that you have first aid equipment close
at hand when using the machine.
Never use the machine when barefoot.
Always wear protective shoes or boots, preferably
with steel toe caps.
Always wear approved protective glasses or a full
visor when assembling or driving.
Always wear gloves when handling the blades.
Never wear loose clothing that can get caught in
moving parts.
Use ear protectors to avoid damage to hearing.

Slope Operation
Slopes are a major factor related to loss of control and
tip-over accidents, which can result in severe injury or
death. Operation on all slopes requires extra caution.
If you cannot back up the slope or if you feel uneasy
on it, do not mow it.
• Mow up and down slopes (10 degrees maximum),
not across.
• Watch for holes, ruts, bumps, rocks, or other
hidden objects. Uneven terrain could overturn the
machine. Tall grass can hide obstacles.
• Choose a low ground speed so that you will not
have to stop while on the slope.
• Do not mow on wet grass. Tires may lose traction.
• Avoid starting, stopping, or turning on a slope. If
the tires lose traction, disengage the blades and
proceed slowly straight down the slope.
• Keep movement on the slopes slow and gradual.
Do not make sudden changes in speed or
direction, which could cause machine to roll over.
• Use extra care while operating machine with
grass catchers or other attachments; they can
affect the stability of the machine.
• Do not use on steep slopes.
• Do not try to stabilize the machine by putting a
foot on the ground.
• Do not mow near drop-offs, ditches, or
embankments. The machine could suddenly roll
over if a wheel is over the edge or if the edge
caves in.

Personal protective equipment

Mow up and down, not side to side

8011-670a

6003-004

WARNING!
Do not drive up or down hills with
slopes greater than 10 degrees. And
do not drive across any slopes.

SAFETY
Children
Tragic accidents can occur if the operator is not
alert to the presence of children. Children are often
attracted to the machine and the mowing activity.
Never assume that children will remain where you last
saw them.
• Keep children out of the mowing area and in the
watchful care of a responsible adult other than the
operator.
• Be alert and turn machine off if a child enters the
area.
• Before and while backing, look behind and down
for small children.
• Never carry children, even with the blades shut
off. They may fall off and be seriously injured or
interfere with safe machine operation. Children
who have been given rides in the past may
suddenly appear in the mowing area for another
ride and be run over or backed over by the
machine.
• Never allow children to operate the machine.
• Use extra care when approaching blind corners,
shrubs, trees, or other objects that may block
your view of a child.

Be extra cautious when driving on slopes

Never allow children to operate the machine

Keep children away from work area
12

8011-509

8011-517

8011-518

SAFETY
WARNING!
The engine must not be started when the driver’s floor plate or any protective plate for the
mower deck’s drive belt is removed.

Safe Handling of Gasoline
To avoid personal injury or property damage, use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.
• Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
• Use only approved gasoline containers.
• Never remove gas cap or add fuel with the engine
running. Allow engine to cool at least two (2)
minutes before refueling.
• Never fuel the machine indoors.
• Never store the machine or fuel container where
there is an open flame, spark, or pilot light such
as on a water heater or other appliance.
• Before you begin refueling, minimize the risk of
static electricity by touching a metal surface.
• Never fill containers inside a vehicle or on a truck
or trailer bed with plastic liner. Always place
containers on the ground away from the vehicle
when filling.
• Remove gas-powered equipment from the truck
or trailer and refuel it on the ground. If this is not
possible, refuel such equipment with a portable
container, rather than from a gasoline dispenser
nozzle.
• Keep the nozzle in contact with the rim of the fuel
tank or container opening at all times until fueling
is complete. Do not use a nozzle lock-open
device.
• If fuel is spilled on clothing, change clothing
immediately.
• Never overfill fuel tank. Replace gas cap and
tighten securely.
• Do not start the engine near spilled fuel.
• Never use gasoline as a cleaning agent.
• If leaks arise in fuel system, engine must not be
started until problem has been resolved.
• Check the fuel level before each use and leave
space for the fuel to expand, as the heat from the
engine and the sun may otherwise cause the fuel
to expand and overflow.

Never fill the fuel tank indoors

8011-516

WARNING!
The engine and the exhaust system
become very hot during operation.
There is risk for burns if touched.
Allow engine and exhaust system to
cool at least two (2) minutes before
refueling.

SAFETY
General Maintenance
•
•
•
•

•
•
•

•

•
•
•

•

•
•

Never operate machine in a closed area.
Keep all nuts and bolts tight to be sure the
equipment is in safe working condition.
Never tamper with safety devices. Check their
proper operation regularly.
Keep machine free of grass, leaves, or other
debris buildup. Clean oil or fuel spillage and
remove any fuel-soaked debris. Allow machine to
cool before storing.
If you strike a foreign object, stop and inspect the
machine. Repair, if necessary, before restarting.
Never make any adjustments or repairs with the
engine running.
Check grass catcher components and the
discharge guard frequently and replace with
manufacturer’s recommended parts, when
necessary.
Mower blades are sharp. Wrap the blade or wear
gloves, and use extra caution when servicing
them.
Check brake operation frequently. Adjust and
service as required.
Maintain or replace safety and instruction labels,
as necessary.
Do not modify safety equipment. Check regularly
to be sure it works properly. The machine must not
be driven with defective or unmounted protective
plates, protective cowlings, safety switches, or
other protective devices.
Do not change the settings of governors and
avoid running the engine with overly high engine
speeds. If you run the engine too fast, you risk
damaging the machine components.
Be very careful when handling battery acid. Acid
on skin can cause serious corrosive burns. If you
spill battery acid on your skin, rinse immediately
with water.
Acid in the eyes can cause blindness, contact a
doctor immediately.
Be careful when servicing the battery. Explosive
gases form in the battery. Never perform
maintenance on the battery when smoking or near
open flames or sparks.
The battery can explode and cause serious injury
or damage.
Ensure that nuts and bolts, especially the
fastening bolts for the blade attachments,
are properly tightened, torqued and that the
equipment is in good condition.

Never drive the machine in an enclosed space

8011-515

WARNING!
Use protective glasses for
maintenance work.

WARNING!
The battery contains lead and lead
compounds, chemicals that are
considered to cause cancer, birth
defects, and other reproductive
system damage. Wash your hands
after handling the battery.

SAFETY
Sparking can occur when working with the battery
and the heavy cables of the starter circuit. This can
cause battery explosion, fire or eye injury. Sparking
in this circuit can not occur after the chassis cable
(normally negative, black) is removed from the battery.
WARNING!
Avoid electrical sparking and its
consequences by the following
routines:
•
•

•
•
•

•

•
•

•

•
•
•

Use protective goggles.
Ensure that the fuel filler cap is mounted tightly
and no flammable substances are stored in an
open vessel.
Never work with the starter circuit if there is spilled
fuel.
Disconnect the chassis cable from the battery first
and reconnect it last.
Do not make a bridge short circuit across the
starter relay to run the starter.

Never use the machine indoors or in spaces
lacking proper ventilation. The exhaust fumes
contain carbon monoxide, an odorless,
poisonous, and lethal gas.
Stop to inspect the equipment if you run over or
into anything. If necessary, make repairs before
starting.
Never make adjustments with the engine running.
The machine is tested and approved only with the
equipment originally provided or recommended
by the manufacturer. Only use approved repair
parts for the machine.
The blades are sharp and can cause cuts and
gashes. Wrap the blades or use protective gloves
when handling them.
Check the parking brake’s functionality regularly.
Adjust and service as necessary.
The mulch blades should only be used in familiar
areas when higher quality mowing is desired.
Reduce the risk of fire by removing grass, leaves,
and other debris that may have accumulated on
the machine.

6003-009

Do not smoke when performing maintenance on the
battery. The battery can explode and cause serious
injury/damage.

Risk of sparking

8009-728

SAFETY
•

Allow the machine to cool before putting it in
storage.
Regularly clean deck and underside of deck,
avoid spraying engine and electrical components
with water.

•

Transport
•

The machine is heavy and can cause serious
crushing injuries. Be extra cautious when it is
loaded on or unloaded from a vehicle or trailer.
Use an approved trailer to transport the
machine. Activate the parking brake, turn off
the fuel supply, and fasten the machine with
approved fastening devices, such as bands,
chains, or straps, when transporting.
Do not operate this machine on public
roadways.
Check and abide by local traffic regulations
before transporting the machine on any road.

•

•
•

Regularly clean deck

8011-514

IMPORTANT INFORMATION
The parking brake is not sufficient to lock the
machine in place during transport. Ensure that
the machine is well fastened to the transport
vehicle. Always reverse the machine onto the
transport vehicle to avoid tipping it over.
WARNING!
•
•

•

Do not tow this machine, it may cause damage
to the drive system.
Do not tow any trailers, etc. with this mower.
They may jackknife or overturn causing
damage to the mower and possibly serious
injury to the operator.
Load the unit onto truck or trailer by driving up
ramps of suitable strength using a slow speed.
Do not lift! The machine is not intended to be
lifted by hand.

Escaping hydraulic oil under
pressure can have sufficient force
to penetrate the skin, causing
serious injury. If injured by escaping
fluid, see a doctor at once. Serious
infection or reaction can develop
if proper medical treatment is not
administered immediately.

WARNING!
This mower is equipped with an
internal combustion engine and
should not be used on or near any
unimproved forested, bush covered
or grassy lands unless the engine's
system is equipped with a spark
arrester meeting applicable local or
state laws (if any). If a spark arrester
is used, it should be maintained
in effective working order by the
operator.

CONTROLS
This operator’s manual describes the Husqvarna
Zero Turn Rider. The rider is fitted with a four-stroke
overhead valve engine.
Transmission from the engine is made via a belt-

driven hydraulic pumps. Using the left and right
steering controls, the flow is regulated and thereby the
direction and speed.

Control Locations
3

6
1.
2.
3.
4.
5.
6.
7.

8 9

Steering control levers
Parking brake
Tracking adjustment
Fuel shut off valve
Fuses
Fuel tank cap
Seat adjustment lever

8. Blade switch
9. Ignition switch
10. Throttle control
11. Choke control (varies by model)
12. Hour meter
13. Deck lift

CONTROLS
Steering Control Levers
The machine’s speed and direction are continuously
variable using the two steering controls. The steering
controls can be moved forward or backward about
a neutral position. Furthermore, there is a neutral
position, which is locked if the steering controls are
moved outward.
When both controls are in the neutral position (N), the
machine stands still.
By moving both controls an equal amount forward
or backward, the machine moves in a straight line
forward or backward respectively.
In order, for example, to turn right while moving
forward, move the right control towards the neutral
position. The rotation of the right wheel is reduced and
the machine turns to the right.
Zero turn can be achieved by moving one control
backward (behind the neutral position) and carefully
moving the other steering control forward from its
neutral position. The rotation direction when zero
turning is determined by which steering control is
moved backward behind the neutral position. If the left
steering control is pulled backward, the machine turns
to the left. Use extra care when using this maneuver.
If the steering controls are in uneven positions when
standing still or do not fit in the slots for moving the
controls outward, they can be adjusted.

Steering controls

WARNING!
The machine can turn very rapidly if
one steering control is moved much
further forward than the other.

1. Forward
2. Neutral
3. Neutral slot, Neutral lock
4. Reverse
Motion control lever, right side

8058-022

8011-7912a

CONTROLS
Parking Brake
IMPORTANT INFORMATION
The machine must stand absolutely still when
applying the parking brake. Always set the
parking brake before dismounting. Release the
parking brake before moving the mower.
The parking brake is found on the left of the machine.
Push the release button and pull the lever backward
to activate the brake—push forward to release it.

Parking brake released

8058-020

Throttle Control
The throttle control regulates the engine speed and
thereby the rate of rotation of the blades, assuming
the blade switch is pulled out, see Engaging the
Mower Deck.
In order to increase or decrease the engine speed,
the control is moved forward or back respectively.
Avoid idling the engine for long periods, as there is a
risk of fouling the spark plugs.
USE FULL THROTTLE WHEN MOWING, for best
mower performance and battery charging.

Throttle control

8058-134

Blade Switch
In order to engage the mower deck, pull the knob out;
the mower blades are disengaged when the knob is
depressed.

Blade switch

8058-134

CONTROLS
Ignition Switch
The ignition key is placed on the control panel and is
used to start and stop the engine.

Ignition switch

8052-001

Choke Control
The choke control is used for cold starts in order to
provide the engine with a richer fuel mixture.
For cold starts on models with separate choke, the
control should be pulled up. On models with the a
throttle/choke, the control should be pushed fully
forward to the choke position.

Choke control

8052-001

Fuses
Fuses are located on the left hand side of the
machine. They are accessed by tilting the seat
forward. They are flat pin fuses of the same type used
in automobiles.
There are two fuses with ratings and functions:
20 Amp Primary fuse
7.5 Amp Mower deck coupling

Fuses
20

8011-420

CONTROLS
Fuel Tank
Read the safety instructions before refueling. The
machine has one fuel tank, just behind the console.
The tank capacity is 4 gallons (15.1 liters).
Regularly check the gas cap gasket for damage and
keep the cap properly tightened.
The engine will run on a minimum of 85-octane
unleaded gasoline (no oil mix). Environmentally
adapted alkylate gasoline can be used. See also
Technical Data concerning ethanol fuel. Methanol fuel
is not allowed. Do not use E85 alcohol based fuel.
Damage to engine and components may occur.
WARNING!
Gasoline is highly flammable.
Observe caution and fill the tank
outdoors (see the safety instruction).

WARNING!
The engine and the exhaust system,
become very hot during operation.
Risk for burns if touched.
Allow engine and exhaust system to
cool at least two (2) minutes before
refueling.

WARNING!
Fill to bottom of filler neck. Do not
overfill. Wipe off any spilled oil
or fuel. Do not store, spill or use
gasoline near an open flame.

Fuel tank

8058-021

IMPORTANT INFORMATION
Experience indicates that alcohol blended
fuels (called gasohol, ethanol or methanol) can
attract moisture which leads to separation and
formation of acids during storage. Acidic gas
can damage the fuel system of an engine while
in storage. To avoid engine problems, the fuel
system should be emptied before storage of
30 days or longer. Drain the gas tank, start the
engine and let it run until the fuel lines and
carburetor are empty. Use fresh fuel the next
season. See Storage Instructions for additional
information. Never use engine or carburetor
cleaners in the fuel tank or permanent damage
may occur.

When operating in temperatures below 32° F. (0° C.),
use fresh, clean winter grade gasoline to insure good
cold weather starting.

CONTROLS
Fuel Shut Off Valve
The fuel shut off valve is located at the left rear of the
seat. The valve is off when the handle tab is turned
perpendicular to the fuel line.

IMPORTANT INFORMATION

Fuel shut off valve in the CLOSED position

8011-419

Always raise the deck to the highest position
for transport.

Cutting Height Adjuster
To set the desired deck cutting height, press the
release button and move the lever forward to the
correct cutting height on the cutting plate. The cutting
height range is from 1½" (38mm) to 4" (102mm) in ½"
(13mm) increments. The heights are measured from
the ground up to the blade tip with the engine not
running.
IMPORTANT INFORMATION
In order to obtain an even cutting height, it is
important that the air pressure in all tires is 15
psi / 103 kPa / 1 bar.
The mower deck’s lifting lever

8058-019

CONTROLS
Seat Adjustment Lever
The seat can be adjusted lengthways. When making
adjustments, the lever under the right side of the
seat is pulled up, after which the seat can be moved
backward or forward.

Lengthways adjustment

8058-023

Hour Meter
The hour meter displays the total operating time.
It will flash CHG OIL (Change Oil) at 50 hour intervals.
The flash duration is one hour before and one hour
after the interval. The CHG OIL icon will come on
and shut off automatically. The hour meter cannot be
manually reset.

Hour meter

8058-134

Tracking Knob
If the mower is not tracking straight, check the
air pressure in both rear tires. Recommended air
pressure is 15 psi (103 kPa / 1 bar) for all tires.
Tracking must be checked on a flat and level concrete
or blacktop surface.
Rotating the tracking knob allows fine tuning
adjustments so the machine tracks straight with the
steering control levers in the full forward position.
Rotate the knob counter clockwise (as viewed from
the operation position) to increase the speed on the
left lever. Rotate clockwise to decrease speed.

Tracking knob

8058-020

operation
Read “Safety Instructions” section and following
pages, if you are unfamiliar with the machine.

Training
Zero turn mowers are far more maneuverable than
typical riding mowers due to their unique steering
capabilities.
We suggest that this section be reviewed in its entirety
prior to attempting to move the mower under its own
power. Additionally, we suggest when first operating
the mower, use a reduced throttle speed and reduced
ground speed by NOT moving control levers to the
furthest forward or reverse positions during initial
operation, or until operator becomes comfortable
with controls. We also suggest first time users, or new
users to Zero Turn mowers to become familiar with
the mower’s movement on a hard surface, such as
concrete or blacktop PRIOR to attempting to operate
on turf. Until operator becomes comfortable with
mower controls and zero turning capability, they may
damage turf due to overly aggressive maneuvers.
IMPORTANT INFORMATION
When control levers are in the reverse position
they return to neutral when released. This may
cause the mower to suddenly stop.

Steering
To move forward and backward
The direction and speed of the mower’s movements
is effected by the movement of the control lever(s)
on each side of mower. The left control lever controls
the left wheel. The right control lever controls the right
wheel.
First time users should push mower (see “Moving
by Hand” in the Operation section) to an open, flat
area, without other people or vehicles/obstacles
nearby. In order to move unit under its own power,
the operator must be in the seat, start engine (see
“Before Starting” in Operation section), adjust engine
speed to idle, disengage parking brake, do not
engage blades at this time, rotate control levers
inward. As long as the control levers have not been
moved forward or backwards, mower will not move.
Slowly move both control levers forward slightly. This
will allow mower to start moving forward in a straight
line. Pull back on control levers to the neutral position
and mower should stop moving. Pull back slightly on
control levers, this will allow mower to start moving
backwards. Push forward on control levers to the
neutral position and mower should stop moving.
To turn to the right
While moving in a forward direction, pull the right lever
back towards the neutral position while maintaining
the position of the left lever, this will slow the rotation
of the right wheel and cause the machine to turn in
that direction.
To turn to the left
While moving in a forward direction pull the left lever
back towards the neutral position while maintaining
the position of the right lever, this will slow the rotation
of the left wheel and cause the machine to turn in that
direction.
To zero turn
While moving in a forward direction, first pull both
control levers back until the mower stops or slows
dramatically.
Then by alternating one lever slightly to the forward
position and the other in the reverse position.

operation
Before Starting
•

Read the sections Safety Instructions and
Controls before starting the machine.
• Perform the daily maintenance before starting
(see Maintenance Schedule in the Maintenance
section).
• Check that there is sufficient fuel in the fuel tank.
• Adjust the seat to the desired position.
The following conditions must be fulfilled before the
engine can be started:
• The blade switch for engaging the mower blades
must be depressed.
• The parking brake must be on.
• Both steering controls must be in the locked
(outer) neutral position.

Mower deck lifting lever

8058-019

Starting the Engine
•
•

•

Sit on the seat.
Raise the mower deck by pushing the release
button on the top of the lifting lever. Pull the lifting
lever backward to the locked (transport) position.
Activate the parking brake by pushing the release
button in and pulling the lever fully upwards.

Pull parking brake upwards to activate.

8058-020

Disengage the mower blades by pressing the blade
switch downwards.

Blade switch

8058-134

operation
Move the steering controls outward to the locked
(outer) neutral position.

Place controls in neutral position

8061-026

Move the throttle to the middle position.

Set the throttle

8058-134

If the engine is cold, the choke control should be
pulled up or pushed forward, depending on model.

Set the choke control
26

8058-133

operation
Press in and turn the ignition key to the start position.

IMPORTANT INFORMATION
Do not run the starter for more than 5 seconds
each time. If the engine does not start, wait
approximately 10 seconds before retrying.

Turn to the start position

8050-780

When the engine starts, immediately release the
ignition key back to the run position.

WARNING!
Engine exhaust and certain vehicle
components contain or emit
chemicals considered to cause
cancer, birth defects or other
reproductive system damage. The
engine exhaust contains carbon
monoxide, which is a odorless,
colorless, poisonous gas. Do not use
the machine in enclosed spaces.

Return to run position

8050-781

Set the desired engine speed with the throttle. Allow
the engine to run at a moderate speed, “half throttle”
for 3-5 minutes before loading it too heavily. USE
FULL THROTTLE WHEN MOWING (no choke).
If your battery is too weak to start the engine, it should
be recharged. (See “Battery” in the Maintenance
Section.)

Set the engine speed

8058-134

operation
Weak Battery
WARNING!
Lead-acid batteries generate
explosive gases. Keep sparks, flame
and smoking materials away from
batteries. Always wear eye protection
when around batteries.

IMPORTANT INFORMATION
Your mower is equipped with a 12-volt
negative grounded system. The other vehicle
must also be a 12-volt negative grounded
system. Do not use your mower to start other
vehicles.

If “jumper cables” are used for emergency starting,
follow this procedure:
Jumper Cables
• Connect each end of the RED cable to the
POSITIVE (+) terminal on each battery, taking
care not to short against chassis.
• Connect one end of the BLACK cable to the
NEGATIVE (-) terminal of the fully charged battery.
• Connect the other end of the BLACK cable to a
good CHASSIS GROUND on the mower with the
discharged battery, away from the fuel tank and
battery.
To remove cables, reverse order
• Remove BLACK cable first from chassis and then
from the fully charged battery.
• Remove RED cable last from both batteries.

Jumper cable connection

8011-642

operation
Running
1. Release the parking brake by pushing the top
release button in and moving the lever downward.
NOTE: The mower is equipped with an operator
presence system. When the engine is running,
any attempt by the operator to leave the seat
without first setting the parking brake will shut off
the engine.
2. Move the steering controls to the neutral position
(N).

Parking brake released

8058-020

3. Set retaining pin into selected cutting height and
secure the opposite side with a cotter hairpin.
WARNING!
Ensure that no one is near mower
when engaging blade switch.
Make sure the work area is free from
objects that could be thrown by the
rotating blades.

Secure selected cutting height

8058-024

4. Push the release button on the cutting height lever
and move lever to the pin, release the button.
5. Set the cutting height with the cutting height
adjustment lever.

Mower deck lifting lever

8058-019

operation
6. Engage the mower deck by pulling out the blade
switch.
7. Move throttle control to full throttle.
The machine’s speed and direction are
continuously variable using the two steering
controls. When both controls are in the neutral
position, the machine stands still.
By moving both controls an equal amount forward
or backward, the machine moves in a straight line
forward or backward respectively.
In order, for example, to turn right while moving
forward, move the right control towards the neutral
position. The rotation of the right wheel is reduced
and the machine turns to the right.
Turning on the spot (zero turn) can be achieved
by moving one control backward (behind the
neutral position) and carefully moving the other
steering control forward from its neutral position.

Set blade engagement and throttle control

8052-001

Operating On Hills
Read the Safety Instructions “Driving on Slopes” in the
“Safety Instructions”.
WARNING!
Do not drive up or down hills with
slopes greater than 10 degrees. Do
not drive across slopes.
•

The slowest speed possible should be used
before starting up or down hills.
Avoid stopping or changing speed on hills.
If stopping is absolutely necessary, pull steering
controls into the neutral position and push to the
outside of the unit. Engage the parking brake.

•
•

Place controls in neutral position

8061-026

IMPORTANT INFORMATION
Control levers return to neutral when released.
This may cause the mower to suddenly stop.
•
•

•

To restart movement, release the parking brake.
Pull the control levers back to the center of the
mower and press forward to regain forward
motion.
Make all turns slowly.

Parking brake released
30

8058-020

operation
Mowing Tips
•
•

•

Observe and flag rocks and other fixed objects to
avoid collisions.
Begin with a high cutting height and reduce it
until the desired mowing result is attained. The
average lawn should be cut to 2½" (64 mm)
during the cool season and over 3" (76 mm)
during the hot months. For healthier and better
looking lawns, mow often after moderate growth.
For best cutting performance, grass over 6" (15
cm) in height should be mowed twice. Make the
first cut relatively high, the second to the desired
height.
The mowing result will be best with a high engine
speed (the blades rotate rapidly) and low speed
(the rider moves slowly). If the grass is not
too long and dense, the driving speed can be
increased without negatively affecting the mowing
result.
The finest lawns are obtained by mowing often.
The lawn becomes more even and the grass
clippings more evenly distributed over the mown
area. The total time taken is not increased as a
higher operating speed can be used without poor
mowing results.
Avoid mowing wet lawns. The mowing result is
poorer because the wheels sink into the soft lawn,
clumps build, and the grass clippings fasten
under the cowling.
Hose the mower deck underside with water after
each use. When cleaning, the mower deck shall
be raised into the transport position. Make sure
the mower is cooled and the engine is off.
Use compressed air to clean top surface of the
deck. Avoid flooding water on top surface, engine
and electrical components.
When the mulching kit is used, it is important that
the mowing interval is frequent.

WARNING!
Clear the lawn of stones and other
objects that can be thrown out by the
blades.

Mowing pattern

8011-603

WARNING!
Never drive the rider on terrain that
slopes more than 10 degrees. Mow
slopes up and down, never side
to side. Avoid sudden directional
changes.

operation
Stopping the Engine
Allow the engine to idle a minute in order to attain
normal operating temperature before stopping it, if
it has been worked hard. Avoid idling the engine for
longer periods, as there is a risk of the spark plugs
fouling.
• Disengage the mower deck by depressing the
blade switch.

Disengage the mower deck and move throttle to
minimum

•

Raise the mower deck by pressing the release
button on the lever and pulling fully backward to
the transport position.

•

When the machine is standing still, activate the
parking brake by pushing the lever release button
and pulling the lever upward.

Raise the mower deck

•

8058-134

8058-019

Move the throttle to the minimum position (tortoise
symbol). Turn the ignition key to the stop position.
Move the steering controls outward.
Remove key. Always remove key when leaving the
mower to prevent unauthorized use.

•
•

IMPORTANT INFORMATION
Leaving the ignition switch in any other
position than “OFF” will cause the battery to
be discharged.
Place controls in neutral position to stop
32

8061-026

operation
Manual Transport
When pushing or pulling the mower, engage the EZT
(Integrated Zeroturn Transaxle) bypass linkages. The
EZT bypass linkages are located on the rear of the
frame, below the rear engine guard.
1. Raise the deck into the highest cutting
position.
2. Pull the EZT bypass linkages up and out of
the keyhole slots. Release the levers with the
head outside the frame and held in the bypass
position.
3. To reengage the EZT’s to drive, reverse the
above procedure.
Load the machine into truck or trailer by driving up
ramps in low gear. DO NOT LIFT! The machine is not
intended to be lifted by hand.

Bypass linkage, EZT engaged

8058-032

WARNING!
Make no adjustments without:
•

the engine stopped,

•

the ignition key removed,

•

the parking brake activated

8058-033

Bypass linkage, EZT locked in the bypass position

MAINTENANCE
Maintenance Schedule
The following is a list of maintenance procedures that
must be performed on the machine. For those points
not described in this manual, visit an authorized
service workshop. An annual service carried out by

an authorized service workshop is recommended to
maintain your machine in the best possible condition
and to ensure safe operation.
Read Maintenance in the Safety section.

Daily

MAINTENANCE
Check the parking brake
Check the engine’s oil level (every refueling)
Check the safety system
Check for fuel and oil leakages
Check/clean the engine’s cooling air intake
Check the mower deck
Check for loose hardware (screws, nuts)
Clean under the mower deck
Start the engine and blades, listen for unusual sounds
Check for damage
Thoroughly clean around the engine
Clean around belts, belt pulleys

Before

●
■
●
♦

After

At
least
once
each
year

■
●
●
●
♦
♦
♦
♦

Check the tire pressures
Check battery connections
Sharpen3)/ Replace mower blades
Clean the engine’s cooling air intake 2)
Clean the air cleaner’s pre-filter 2) (foam)
Clean the air cleaner’s filter cartridge 2) (paper filter)
Check/adjust the parking brake
Inspect muffler/spark arrester
1)

■
■
■
♦
♦

Maintenance interval
in hours
25

300

●
●
●
■
■
♦
♦

First change after 8-10 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
conditions, cleaning and replacement are required more often. 3) Performed by authorized service workshop.

● = Described in this manual
♦ = Not described in this manual
■ = Refer to the engine manufacturer's manual

100

In dusty

MAINTENANCE
Daily

MAINTENANCE

Before

After

At least
once
each
year

Maintenance
interval
in hours
25

100

■
●

Check/adjust throttle cable
Check the condition of belts, belt pulleys
Change the engine oil

Replace the engine oil filter
Clean/replace the spark plugs
Replace the fuel filter
Replace air filter 2) (paper filter)
Check the caster wheels (every 200 hours)
Replace the air cleaner’s pre-filter 2) (foam)
Check/adjust the mower deck
Check the engine valve clearance 3)
Perform the 300-hour service 3)
1)

●
■
■
■
●
■
●
■
●
♦
♦

■

First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
conditions, cleaning and replacement are required more often. 3) Performed by authorized service workshop.

300

■
■
●
■
●
●
♦
♦
2)

In dusty

● = Described in this manual
♦ = Not described in this manual
■ = Refer to the engine manufacturer's manual
WARNING!
Before performing any service or adjustment checklist
• Engage the parking brake.
• Place the Blade-switch in the disengaged position.
• Turn the ignition switch to “OFF” position and remove the key.
• Make sure the blades and all moving parts have completely stopped.
• Disconnect the spark plug wire from all spark plugs and place the wire where it
cannot come in contact with the plug.

MAINTENANCE
Battery
Your mower is equipped with a maintenance free
battery and does not need servicing. However,
periodic charging of the battery with an automotive
type battery charger will extend its life.

• Keep battery and terminals clean.
• Keep battery bolts tight.
• See chart for charging times.

STANDARD

STATE

BATTERY

OF
CHARGE

APPROXIMATE BATTERY CHARGING TIME*
TO FULL CHARGE AT 80OF / 27OC
Maximum Rate at:
50 Amps

30 Amps

20 Amps

10 Amps

12.6V

100%

- FULL CHARGE -

12.4V

75%

20 min.

35 min.

48 min.

90 min.

12.2V

50%

45 min.

75 min.

95 min.

180 min.

12.0V

25%

65 min.

115 min.

145 min.

280 min.

11.8V

85 min.

150 min.

195 min.

370 min.

*Charging time depends on battery capacity,
condition, age, temperature and efficiency of charger

WARNING!
Always wear eye protection when
around batteries.

Cleaning battery and terminals
Corrosion and dirt on the battery and terminals can
cause the battery to “leak” power.
1. Open the terminal access doors.
2. Disconnect BLACK battery cable first, then the
RED battery cable and remove the battery from
the machine.
3. Rinse the battery with plain water and dry.
4. Clean terminals and battery cable ends with wire
brush until shiny.
5. Coat terminals with grease or petroleum jelly.
6. Reinstall battery.
Replacing battery
1. Lift seat and rotate forward.
2. Using two ½" wrenches disconnect BLACK
battery cable then RED battery cable.
3. Position deck to lowest setting.
4. Front underside of frame, remove the nuts that
secure the battery hold-down.
5. Carefully remove the battery from the mower.
6. Install new battery with terminals in the same
position as the old battery.
7. Reinstall battery hold-down and secure with
nuts removed in Step 4.
8. Reconnect RED battery cable to positive (+)
battery terminal with bolt and hex nut.
9. Connect BLACK grounding cable to negative
(-) battery terminal with remaining hex bolt and
hex nut
10. Replace terminal boot cover.
11. Lower seat
36

IMPORTANT INFORMATION
Do not attempt to open or remove caps or
covers. Adding or checking level of electrolyte
is not necessary.
Always use two wrenches for the terminal
screws.

WARNING!
Do not short battery terminals by
allowing a wrench or any other
object to contact both terminals at
the same time. Before connecting
battery, remove metal bracelets,
wristwatch bands, rings, etc.
Positive terminal must be connected
first to prevent sparks from
accidental grounding.

Remove battery hold-down to replace battery

8050-109

MAINTENANCE
Safety System
The machine is equipped with a safety system that
prevents starting or driving under the following
conditions.
The engine can only be started when:
1. The mower deck is disengaged.
2. The steering controls are in the outer, locked
neutral position.
3. The parking brake is on.
Make daily inspections to ensure that the safety
system works by attempting to start the engine
when one of the conditions is not met. Change the
conditions and try again.
If the machine starts when one of these conditions
is not met, turn the machine off and repair the safety
system before using the machine again.
Make sure the engine stops when the park brake
is not engaged and the operator leaves the seated
position.
Check that the engine stops if the mower blades are
engaged and the driver temporarily moves off the
drivers seat.

Steering controls locked in neutral

8058-026

IMPORTANT INFORMATION
In order to be able to drive, the driver must
sit in the seat and release the parking brake
before the steering controls can be moved into
the neutral position, otherwise the engine will
stop.

Fuel Pump Air Filter
Regularly check that the fuel pump’s air filter is free
from dirt.
Remove the screws and open the pump, no hoses
need be removed.
The filter can be cleaned with a brush if necessary.
Replace the filter on the console.

Fuel pump air filter

8009-147

MAINTENANCE
Tire Pressures
All tires should be at 15 psi / 103 kPa / 1 bar.

Check tire pressures

8011-564

Parking Brake
Visually check that no damage is found on the lever,
cables, or switch belonging to the parking brake.
Perform a standstill test and check that there is
sufficient braking action.
To adjust the parking brake, contact the Husqvarna
service workshop.
IMPORTANT INFORMATION
The machine must be absolutely standing still
when applying the parking brake.

WARNING!
Faulty adjustment will result in
reduced braking ability and can
cause an accident.

Parking brake

8058-020

MAINTENANCE
V-belts
Check every 100 hours of operation. Check for severe
cracking and large nicks.
NOTE: The belt will show some small cracks in normal
operation.
The belts are not adjustable. Replace belts if they
begin to slip from wear.
Deck Belt
1. Park on a level surface. Apply parking brake.
2. Lower the deck into the lowest cutting position.
3. Remove bolts from belt shields and remove
shields.
4. Remove any dirt or grass that may have
accumulated around the cutter housings and
entire deck surface.
5. Carefully roll the belt over the top of the cutter
housing pulleys and remove belt.

Deck belt installation
NOTE: For ease in installing the deck belt, refer to
the routing decal on the top of the deck.
1. Wrap the deck belt around the electric clutch
pulley that is located on the engine shaft.
2. Route the belt forward and up onto the deck.
3. Place belt around spring loaded idler pulley.
4. Wrap the belt around the stationary idler pulley
and around the mandrel housings.
5. Push inward on the idler arm and carefully route
belt over stationary idler pulley. Once belt is
properly routed, slowly release idler arm to tension
belt.
6. Double check belt routing to make sure it
matches the decal affixed to the deck, and the
belt does not have any twist. Correct if needed.
7. Replace belt shields on both mandrel housings
and secure with fasteners.

Remove belt shields

Belt routing

8058-088

8011-764

MAINTENANCE
Cutting Blades
In order to attain the best mowing effect, it is important
that the blades are well sharpened and not damaged.
Bent or cracked blades or blades with large nicks
should be replaced.

IMPORTANT INFORMATION
The sharpening of blades should be carried
out by an authorized service workshop.
Damaged blades should be replaced when hitting
obstacles that result in a breakdown. Let the service
workshop decide whether the blade can be repaired/
ground or must be replaced.
Balance the blades after sharpening.
Check the blade mounts.

8011-604-1

Check the blades

WARNING!
Blades are sharp. Protect your hands
with gloves and/or wrap blades with
a heavy cloth when handling.

Blade replacement
1. Remove blade bolt by turning counterclockwise.
2. Install new or resharpened blade with stamped
“GRASS SIDE” facing towards ground/grass
(down) or “THIS SIDE UP” facing deck and cutter
housing.
3. Install and tighten blade bolt securely.
4. Torque blade bolt to 90 ft/lbs (122 Nm).

3
1

IMPORTANT INFORMATION
Special blade bolt is heat treated.
Replace with a Husqvarna bolt if required.
Do not use lower grade hardware than
specified.

1. Blade
2. Blade bolt (special)
3. Cutter housing
Blade attachment

8058-027

MAINTENANCE
Adjusting the Mower Deck
Leveling deck
Adjust the deck while the mower is on a level
surface. Make sure the tires are inflated to the correct
pressure. See “Technical Data” under Transmission.
If tires are under or over inflated, the deck cannot be
properly adjusted.
The deck should be adjusted slightly higher in the
rear.
NOTE: To insure accuracy of leveling procedure,
mower deck drive belt must be installed prior to
leveling deck.
1. Wear heavy gloves. Turn each outer blade tip to
align with the deck or in a side-to-side manner.
2. Measure from the floor surface up to the bottom of
the blade tip on the discharge side of the mower
deck. Retain this measurement.
3. Move to the opposite side, check that
measurement is the same. If adjustment is
required—with a ¾" or adjustable wrench, turn
the lift link adjustment nuts on either side counter
clockwise to lower or clockwise to raise. Adjust
until both side-to-side measurements are equal.

Lift link adjustment nut

8058-030

4. Turn any blade to align with the deck in frontto-rear manner. If the front blade tip does not
measure 1/8" to ½" higher in the rear, follow the
front adjustment instructions that follow.
5. With a 5/8 or adjustable wrench, turn the nuts on
the front suspension linkage. Clockwise raises the
front of the mower, counterclockwise will lower
the front. Adjust nuts until rear of mower deck is
positioned level to 1/8" higher in the rear than the
side-to-side measurement.
NOTE: This will place the mower deck in a base
measurement position. Additional adjustment may
be required to achieve desired cut for the type of
grass or conditions being mowed.
Deck front adjustment nuts

8058-031

MAINTENANCE
Anti-scalp Rollers

IMPORTANT INFORMATION
Adjust anti-scalp rollers with the mower on a
flat level surface.
Anti-scalp rollers are properly adjusted when they are
just slightly off of the ground when the deck is at the
desired cutting height in the operating position. Antiscalp rollers then keep the deck in the proper position
to help prevent scalping in most terrain conditions.
Anti-scalp rollers can be set in four positions. The
rollers should be approximately ¼" (6.5 mm) from
ground. Do not adjust the rollers to support the deck.

IMPORTANT INFORMATION
The anti-scalp rollers must not be used for
gauge wheels or the roller and deck may be
damaged.

Anti-scalp rollers

8050-830

MAINTENANCE
Caster Wheels
Check every 200 hours. Check that wheels rotate
freely. If wheels do not rotate freely take the unit to
your dealer for service.
Foam filled tires or solid tires will void the warranty.
Removal and installation of caster wheel
Remove nut and caster bolt.
Pull the wheel out of the yoke and take care of the
spacers.
Install in reverse order. Tighten caster bolt.

4
3

IMPORTANT INFORMATION
DO NOT add any type of tire liner or foam fill
material to the tires. Excessive loads created
by foam filled tires will cause premature
failures.
Only use O.E.M. specified tires.

8011-619-4

1. Caster yoke
2. Caster bolt
3. Caster long spacer
4. Caster small spacers
Caster wheels

Cleaning
Regular cleaning, especially under the mower deck,
will increase the machine’s life-span. Make it a habit to
clean the machine directly after use (after it is cooled),
before the debris sticks.
Do not spray water on the top of the mower deck. Use
compressed air to clean the top side of mower deck.
Regularly clean the underside of the deck with normal
water pressure. Do not use a high pressure washer or
steam cleaner. Avoid spraying engine and electrical
components with water.
For models fitted with a cleanout port, attach the quick
connect (from the accessory packet) to any garden
hose. After mowing, snap the hose to the cleanout
port and turn on water supply.
Restart the mower and engage the blades to use the
spinning action to wash away debris. Make sure the
hose is away from the mower blades.
Do not rinse hot surfaces with cold water. Let unit cool
before washing.

Hardware

IMPORTANT INFORMATION
Use protective glasses when
cleaning and washing.

Clean regularly

8058-084

Check daily. Inspect the entire machine for loose or
missing hardware.

LUBRICATION

8050-832

12/12 Every year

Lubricate with grease gun

1/52 Every Week

Oil change

Filter change
Level check

1/365 Every day

General
Remove the ignition key to prevent unintentional
movements during lubrication.
When lubricating with an oil can, it must be filled with
engine oil.
When lubricating with grease, unless otherwise stated,
use a high grade molybdenum disulphide grease.
For daily use, the machine should be lubricated twice
weekly.

Wipe away excess grease after lubrication.
It is important to avoid getting lubricant on the belts
or the drive surfaces on the belt pulleys. Should this
happen, attempt to clean them with spirits. If the belt
continues to slip after cleaning, it must be replaced.
Gasoline or other petroleum products must not be
used to clean belts.

LUBRICATION
Front Wheel Mount
Lubricate with a grease gun, one zerk for each wheel
mount, until the grease is forced out.
Use only good quality bearing grease.
Grease from well-known brand names (petrochemical
companies) usually maintains a good quality.

Front Wheel Bearings
Lubricate with a grease gun, one zerk for each set of
wheel bearings, until the grease is forced out.
Use only good quality bearing grease.

Lubricating the front wheels

8058-068

IMPORTANT INFORMATION
Use minimal lubrication and remove excess
lubricant so that is does not come into contact
with belts or belt pulley drive surfaces.

Deck Spindles
Lower the cutting deck completely.
If a grease gun without a rubber hose is used, the foot
plate must be removed.
Lubricate with a grease gun, 2-3 strokes per spindle.

Deck spindle

80158-136

Transmission
The transmission is maintenance free with no need for
level checks or oil changes. If a leak occurs, replace
the unit or contact your Husqvarna dealer.

TROUBLESHOOTING
Problem

Cause

Engine will not start

•

Blade switch is engaged.

•

Steering controls are not locked in the neutral position

•

Parking brake is not activated

•

Battery is dead

•

Contamination in the carburetor or fuel line.

•

Fuel supply is closed or the shutoff valve for the fuel tank is in
the wrong position

•

Clogged fuel filter or fuel line

•

Ignition system faulty

•

Battery is dead

•

Poor contact of the battery terminal cable connections

•

Blown fuse

•

Fault in the starter safety circuit. See Checking the Safety
System in the “Maintenance Section”

•

Faulty carburetor

•

Choke control is pulled out with a warm engine

•

Clogged fuel filter or jet

•

Clogged ventilation valve on the fuel cap

•

Fuel tank nearly empty

•

Fouled spark plugs

•

Rich fuel mixture or fuel-air mixture.

•

Wrong fuel type

•

Water in fuel

•

Clogged air filter

•

Clogged air filter

•

Fouled spark plugs

•

Carburetor incorrectly adjusted

•

Air trapped in hydraulic system

•

Blades are loose

•

Blades are incorrectly balanced

•

Engine is loose

Starter does not turn the engine over

Engine runs rough

Engine seems weak

Machine vibrates

TROUBLESHOOTING
Problem

Cause

Engine overheats

•

Clogged air intake or cooling fins

•

Engine overloaded

•

Poor ventilation around engine

•

Defective engine speed regulator

•

Too little or no oil in the engine

•

Contamination in the carburetor or fuel line.

•

Fouled spark plugs

•

Poor contact of the battery terminal cable connections

•

Charging lead is disconnected

•

Parking brake on

•

Bypass valve on pump open

•

Drive belt for the transmission slack or
has come off

•

Air trapped in hydraulic system

•

Drive belt for the mower deck has come loose

•

Contact for the electromagnetic coupling has loosened

•

Blade switch is faulty or has come loose from cable
contact

•

Blown fuse

•

Damaged seals, housing, or gaskets

•

Air trapped in hydraulic system

•

Different air pressure in tires on the left and right sides.

•

Bent blades

•

Suspending for the mower deck is uneven

•

Blades are dull

•

Driving speed too high

•

Grass is too long

•

Grass collected under the mower deck

Battery not charging
The machine moves slowly, unevenly, or not at all

Mower deck not engaging

Transaxle leaks oil
Uneven mowing results

STORAGE
Winter Storage
At the end of the mowing season, the machine should
be readied for storage (or if it will not be in use for
longer than 30 days). Fuel allowed to stand for long
periods of time (30 days or more) can leave sticky
residues that can plug the carburetor and disrupt
engine function.
Fuel stabilizers are an acceptable option as regards
to the sticky residues that can occur during storage.
Add stabilizer to the fuel in the tank or in the storage
container. Always use the mixing ratios specified by
the manufacturer of the stabilizer. Run the engine for
at least 10 minutes after adding the stabilizer so that
it reaches the carburetor. Do not empty the fuel tank
and the carburetor if you have added stabilizer

WARNING!
Never store an engine with fuel
in the tank indoors or in poorly
ventilated spaces where fuel vapor
can come in contact with open
flames, sparks, or a pilot light such
as in a boiler, hot water tank, clothes
dryer, etc. Handle the fuel with
care. It is very flammable and can
cause serious personal injury and
property damage. Drain the fuel into
an approved container outdoors and
far away from open flame. Never
use gasoline for cleaning. Use
a degreaser and warm water instead.

To ready the machine for storage:
1. Thoroughly clean the machine, especially under
the mower deck. Touch up damage to the paint
and spray a thin layer of oil on the underside of
the mower deck to avoid corrosion.
2. Inspect the machine for worn or damaged parts
and tighten any nuts or screws that may have
become loose.
3. Change the engine oil; dispose of properly.
4. Empty the fuel tanks or add a fuel stabilizer. Start
the engine and allow it to run until the carburetor
is drained of fuel or the stabilizer has reached the
carburetor.
5. Remove the spark plug and pour about a
tablespoon of engine oil into the cylinder. Turn
over the engine so that the oil is evenly distributed
and then refit the spark plug.
6. Lubricate all grease zerks, joints, and axles.
7. Remove the battery. Clean, charge, and store the
battery in a cool place, but protect it from direct
cold.
8. Store the machine in a clean, dry place and cover
it for extra protection.

Service
When ordering spare parts, please specify the
purchase year, model, type, and serial number.
Always use genuine Husqvarna spare parts.
An annual check-up at an authorized service
workshop is a good way to ensure that your machine
performs its best the following season.

schematics

TECHNICAL DATA
RZ4222F / 966659401

RZ4621 / 966659101
RZ4621 BF / 966676501
RZ4621 CA / 966659201

Briggs & Stratton

Endurance

Engine
Manufacturer
Type
Power
Lubrication

22 hp

1,2)

21 hp1,2)

Pressure with oil filter

Min 87 octane unleaded (Max
ethanol 10%, Max MTBE 15%)

4 gallons / 15.1 liters

Cooling

Air cooled

Air filter

Standard

12V

Electric

Fuel
Fuel tank capacity

Alternator
Starter
Transmission
Transmission

Hydrostatic transaxles

Dual levers, foam gripped

Speed forward

0-6 mph / 0-9.7 km/h

Speed reverse

0-3.5 mph / 0-5.6 km/h

Mechanical parking brake

410-5, 4 ply

18 x 8.5

15 PSI / 103 kPa / 1 bar

Speed and direction controls

Brakes
Front caster tires, smooth tread
Rear tires, turf pneumatic
Tire pressure

The power rating of the engines indicated is the average net
power output (at specified rpm) of a typical production engine
for the engine model measured to SAE standard J1349/ISO1585.
Mass production engines may differ from this value. Actual power
output for the engine installed in the final machine will depend
on the operating speed, environmental conditions and other
variables.
2)
Refer to the engine manufacturer's owner manual for engine
specifications.

TECHNICAL DATA
RZ4222F / 966659401

RZ4621 / 966659101
RZ4621 BF / 966676501
RZ4621 CA / 966659201

Cutting Width

42" / 107cm

46" / 117cm

Cutting Height

1.5 - 4" / 3.8 - 10.2 cm

Uncut Circle

Number of Blades

Blade Length

22¾" / 57.8 cm

15" / 38 cm

Nose Rollers

Yes

Sprung Seat

Standard

Hour Meter

Standard

Blade Engagement

Electromagnetic Clutch

Deck Construction

Fabricated

Stamped

Frame

Productivity

2.6 acres/h / 10521 m /h

2.8 acres/h / 11290 m2/h

575 lbs / 261 kgs

525 lbs / 238 kg

Base Machine Length

75" / 191cm

Base Machine Height

40" 102cm

Base Machine Width

39.2" / 100 cm

41.5" / 106 cm

Overall Width, Chute Up

43" / 109 cm

48" / 122 cm

Overall Width, Chute Down

52" / 132 cm

56" / 142 cm

Dimension
Weight

TECHNICAL DATA
RZ4623 / 966678201

RZ4824F / 966678301

Kohler

Kawasaki

Endurance

FR691V

23 hp1,2)

24 hp1,2)

Pressure with oil filter

Min 87 octane unleaded (Max
ethanol 10%, Max MTBE 15%)

4 gallons / 15.1 liters

Cooling

Air cooled

Air filter

Standard

12V

Electric

Hydrostatic transaxles

Dual levers, foam gripped

Speed forward

0-6 mph / 0-9.7 km/h

Speed reverse

0-3.5 mph / 0-5.6 km/h

Mechanical parking brake

410-5, 4 ply

18 x 8.5

18 x 9.5

15 PSI / 103 kPa / 1 bar

Engine
Manufacturer
Type
Power
Lubrication
Fuel
Fuel tank capacity

Alternator
Starter
Transmission
Transmission
Speed and direction controls

Brakes
Front caster tires, smooth tread
Rear tires, turf pneumatic
Tire pressure

TECHNICAL DATA
RZ4623 / 966678201

RZ4824F / 966678301

Cutting Width

46" / 117cm

48" / 117cm

Cutting Height

1.5 - 4" / 3.8 - 10.2 cm

Uncut Circle

Number of Blades

Blade Length

22.75" / 58 cm

16.25" / 41 cm

Nose Rollers

Yes

Sprung Seat

Standard

Hour Meter

Standard

Blade Engagement

Electromagnetic Clutch

Deck Construction

Stamped

Fabricated

Frame

Productivity

2.8 acres/h / 11290 m /h

2.9 acres/h / 11735.9 m2/h

530 lbs / 240 kgs

595 lbs / 270 kgs

Base Machine Length

75" / 191 cm

Base Machine Height

40" 106 cm

Base Machine Width

41.75" / 100 cm

43.75" / 100 cm

Overall Width, Chute Up

48" / 122 cm

48.5" / 123 cm

Overall Width, Chute Down

56" / 142 cm

59.75" / 152 cm

Dimension
Weight

TECHNICAL DATA
RZ5424 / 966691901

RZ5424 / 966659301

Kawasaki

Kohler

Type

FR691V

SV720

Power

24 hp

Engine
Manufacturer

Lubrication

1,2)

24 hp 1,2)

Pressure with oil filter

Min 87 octane unleaded (Max
ethanol 10%, Max MTBE 15%)

4 gallons / 15.1 liters

Cooling

Air cooled

Air filter

Standard

12V

Electric

Hydrostatic transaxles

Dual levers, foam gripped

Fuel
Fuel tank capacity

Alternator
Starter
Transmission
Transmission
Speed and direction controls
Speed forward

0-6 mph / 0-9.7 km/h

Speed reverse

0-3.5 mph / 0-5.6 km/h

Mechanical parking brake

13 x 5.0-6, 4 ply

18 x 9.5-8

15 PSI / 103 kPa / 1 bar

Brakes
Front caster tires, smooth tread
Rear tires, turf pneumatic
Tire pressure

TECHNICAL DATA
RZ5424 / 966691901

RZ5424 / 966659301

Cutting Width

54" / 137cm

Cutting Height

1.5 - 4" / 3.8 - 10.2 cm

Uncut Circle

Number of Blades

Blade Length

18¼" / 46.4 cm

Nose Rollers

Sprung Seat

Standard

Hour Meter

Standard

Electromagnetic Clutch

Frame

Blade Engagement
Deck Construction

Stamped

3.3 acres/h / 13354 m2/h

538 lbs / 244 kg

Base Machine Length

75" / 191 cm

Base Machine Height

40" / 102 cm

Base Machine Width

43¾" / 112 cm

57" / 145 cm

67½" / 171 cm

Productivity
Dimensions
Weight

Overall Width, Chute Up
Overall Width, Chute Down

TECHNICAL DATA
Torque Specifications
Engine crankshaft bolt
Deck pulley bolts
Lug nuts
Blade bolt

50 ft/lb (67 Nm)
150 ft/lb (203 Nm)
75 ft/lb (100 Nm)
90 ft/lb (122 Nm)

Standard ¼" fasteners
Standard 5/16" fasteners
Standard 3/8" fasteners
Standard 7/16" fasteners
Standard ½” fasteners

9 ft/lb (12 Nm)
18 ft/lb (25 Nm)
33 ft/lb (44 Nm)
52 ft/lb (70 Nm)
80 ft/lb (110 Nm)

HEX HEAD CAP SCREWS
The torque values shown should be used as a general guideline when specific torque values are not given.

U.S. Standard Hardware

Shank Size (Diameter in inches, fine or coarse
thread)

Grade

SAE Grade 5

SAE Grade 8

Flangelock Screw
w/Flangelock Nut

Size

ft./lbs

/16

ft./lbs

/16

108

102

115

156

/16

110

150

165

224

150

203

225

305

250

339

370

502

378

513

591

801

11/8

782

1060

1410

1912

** Grade 5 - Minimum commercial quality (lower quality not recommended)
Metric Standard Hardware

Shank Size (Diameter in inches, fine or coarse thread)

Grade

Grade 8.8

Grade 12.9

ft./lbs

1.5

2.2

2.7

3.6

4.5

5.2

7.5

8.2

13.5

18.8

21.8

M10

35.2

43.5

M12

43.5

62.2

100

M14

70.5

100

133

119

159

M16

108

144

147

196

176

235

M18

142

190

202

269

242

323

M20

195

260

275

366

330

440

M22

276

368

390

520

471

628

M24

353

470

498

664

596

794

M27

530

707

474

996

904

1205

Accessories
Collection system
56

Grade 10.9

Size

CONForMITY CERTIFICATES
USA requirements
Labels are placed on the engine and/or in the engine
compartment stating that the machine will fulfill the
requirements. This is also applicable to special
requirements for any of the states, (California emission
rules etc.). Do not remove any of these labels.
Certificates can also be supplied with the machine at
delivery or written in the Engine manual. Take care of
them as they are valuable documents.

SERVICE JOURNAL
Date, mtr reading, stamp, sign

Action

Delivery Service
Charge the battery
Adjust the tire pressure of all wheels to 15 PSI (1 bar)
Mount the steering controls in the normal position
Connect the contact box to the cable for the seat’s safety switch
Check that the right amount of oil is in the engine
Adjust the position of the steering controls
Fill with fuel and open the fuel shut off valve
Start the engine
Check that there is drive to both wheels
Check the mower deck adjustment

q
q
q
q
q
q
q
q
q
q

Check:
The safety switch for the parking brake
The safety switch for the mower deck
The safety switch in the seat
The safety switch in the steering controls
Parking brake functionality
Driving forward
Driving backward
Engaging the blades
Check the idle speed
Check the engine high idle speed

q
q
q
q
q
q
q
q
q
q

Inform the customer about:
The need and advantages of following the service schedule
The need and advantages of leaving the machine for service every
300 hours
The effects of service and maintaining a service journal on the
machine’s resale value
Application areas for mulching
Fill in the sales papers, etc.

q
q
q
q
Delivery service has
been carried out
No remaining notes
Certified:

SERVICE JOURNAL
Action