Troy Bilt Autodrive 604 Users Manual 770 10187

604 to the manual 104a8bd9-c7de-49d1-8392-57ee2211f4ff

Troybilt 604 Garden Tractor

2015-01-21

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OPERATOR’S MANUAL
AutoDrive Lawn Tractor
Model 604
™

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, brush-covered or grass-covered land unless the engine’s exhaust 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.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department, P.O. Box 368022 Cleveland, Ohio 44136-9722.

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722
PRINTED IN U.S.A.

FORM NO. 770-10187
(12/98)

SECTION 1: TABLE OF CONTENTS
PAGE
FINDING YOUR MODEL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CALLING CUSTOMER SUPPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
IMPORTANT SAFE OPERATION PRACTICES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY LABLES FOUND ON YOUR UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SLOPE GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ATTACHMENTS & ACCESSORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TRACTOR SET-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
WARRANY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

SECTION 2: FINDING YOUR MODEL NUMBER
This Operator’s Manual is an important part of your new rider. It will help you assemble, prepare and maintain
your rider. Please read and understand what it says.
Before you start to prepare your tractor for its first use, please locate the model plate and copy the information
from it in this Operator’s Manual. The information on the model plate is very important if you need help from
your dealer or the MTD customer support department.
• Every tractor has a model plate. You can locate it by lifting the seat and looking at the seat bracket.
• An example of what the model plate will look like is shown below.
This is where your model number will be.
XXX-X-XXX-X-XXX XXXXXXXXXXX
This is where your serial number will be.
Copy the model number here:
MTD PRODUCTS INC
P.O. BOX 368022
CLEVELAND, OHIO 44136

Copy the serial number here:

SECTION 3: CALLING CUSTOMER SUPPORT
• LOCATE YOUR MODEL NUMBER AND SERIAL NUMBER — Record this information in the space
provided. To find your unit’s specific model number and serial number, see SECTION 2: FINDING
YOUR MODEL NUMBER.
• If you are having difficulty assembling this product or if you have any questions regarding the controls,
operation or maintenance of this unit, please call the Customer Support Department.
• Customer Support can be reached by dialing: 1- (330) 220-4MTD
(4683)
or
1- (800)-800-7310
• Please have your model number and serial number ready when you call.
• Although both numbers are important, you will be asked to enter only your serial number before your
call can be processed.

SECTION 4: IMPORTANT SAFE OPERATION PRACTICES
WARNING: THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH, IF
NOT FOLLOWED, COULD ENDANGER THE PERSONAL SAFETY AND/OR PROPERTY OF
YOURSELF AND OTHERS. READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL
BEFORE ATTEMPTING TO OPERATE YOUR LAWN MOWER. FAILURE TO COMPLY WITH
THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOL,
HEED ITS WARNING.

WARNING: The Engine Exhaust from this product contains chemicals known to
the State of California to cause cancer, birth defects or other reproductive harm.

DANGER: Your lawn mower was built to be operated according to the rules for safe operation in
this manual. As with any type of power equipment, carelessness or error on the part of the operator
can result in serious injury. This lawn mower is capable of amputating hands and feet and throwing
objects. Failure to observe the following safety instructions could result in serious injury or death.
1.

GENERAL OPERATION
• Read, understand, and follow all instructions in the
operator’s manual and on the machine before
starting. Keep this manual in a safe place for future
and regular reference and for ordering replacement
parts.

• Never leave a running machine unattended. Always
turn off blade(s), place transmission in neutral, set
park brake, stop engine and remove key before
dismounting.

• Only allow responsible individuals familiar with the
instructions to operate the machine. Know controls
and how to stop the machine quickly.

• Stop engine and wait until blade(s) comes to a
complete stop before (a) removing grass catcher or
unclogging chute, or (b) making any repairs,
adjusting or removing any grass or debris.

• Turn off blade(s) when not mowing.

• Do not put hands or feet under cutting deck or near
rotating parts.

• Mow only in daylight or good artificial light.

• Clear the area of objects such as rocks, toys, wire,
etc., which could be picked up and thrown by the
blade. A small object may have been overlooked
and could be accidentally thrown by the mower in
any direction and cause injury to you or a
bystander. To help avoid a thrown objects injury,
keep children, bystanders and helpers at least 75
feet from the mower while it is in operation. Always
wear safety glasses or safety goggles during
operation or while performing an adjustment or
repair, to protect eyes from foreign objects. Stop
the blade(s) when crossing gravel drives, walks or
roads.

• 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. This unit should not
be driven up or down a ramp onto a trailer or truck
under power, because the unit could tip over,
causing serious personal injury. The unit must be
pushed manually on a ramp to load or unload
properly.
• Never make a cutting height adjustment while
engine is running if operator must dismount to do
so.

• Be sure the area is clear of other people before
mowing. Stop machine if anyone enters the area.
• Never carry passengers.

• Wear sturdy, rough-soled work shoes and closefitting slacks and shirts. Do not wear loose fitting
clothes or jewelry. They can be caught in moving
parts. Never operate a unit in bare feet, sandals, or
sneakers.

• Disengage blade(s) before shifting into reverse and
backing up. Always look down and behind before
and while backing.
• Be aware of the mower and attachment discharge
direction and do not point it at anyone. Do not
operate the mower without either the entire grass
catcher or the chute guard in place.

• Check overhead clearance carefully before driving
under power lines, wires, bridges or low hanging
tree branches, before entering or leaving buildings,
or in any other situation where the operator may be
struck or pulled from the unit, which could result in
serious injury.

• Slow down before turning. Operate the machine
smoothly. Avoid erratic operation and excessive
speed.

3. CHILDREN

• Disengage all attachment clutches, thoroughly
depress the brake pedal, and shift into neutral
before attempting to start engine.

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.

• Your mower is designed to cut normal residential
grass of a height no more than 10". Do not attempt
to mow through unusually tall, dry grass (e.g.,
pasture) or piles of dry leaves. Debris may build up
on the mower deck or contact the engine exhaust
presenting a potential fire hazard.

• Keep children out of the mowing area and in
watchful care of an adult other than the operator.
• Be alert and turn machine off if children enter the
area.

2. SLOPE OPERATION

• Before and when backing, look behind and down
for small children.

Slopes are a major factor related to loss of control and tipover accidents which can result in severe injury or death.
All slopes require extra caution. If you cannot back up the
slope or if you feel uneasy on it, do not mow it.
For your safety, use the slope gauge included as part of this
manual to measure slopes before operating this unit on a
sloped or hilly area. If the slope is greater than 15° as
shown on the slope gauge, do not operate this unit on that
area or serious injury could result.

• Never carry children, even with the blades off. They
may fall off and be seriously injured or interfere with
the safe machine operation.
• Never allow children under 14 years old to operate
the machine. Children 14 years and over should
only operate machine under close parental
supervision and proper instruction.
• Remove key when machine is unattended to
prevent unauthorized operation.

DO:

• Use extra care when approaching blind corners,
shrubs, trees or other objects that may obscure
your vision of a child or other hazard.

• Mow up and down slopes, not across.
• Remove obstacles such as rocks, limbs, etc.
• Watch for holes, ruts or bumps. Uneven terrain
could overturn the machine. Tall grass can hide
obstacles.

4. SERVICE
• Use extreme care in handling gasoline and other
fuels. They are extremely flammable and the
vapors are explosive.

• Use slow speed. Always keep machine in gear
when going down slopes to take advantage of
engine braking action.

• Use only an approved container.

• Follow the manufacturer’s recommendations for
wheel weights or counterweights to improve
stability.

• Never remove fuel cap or add fuel with the engine
running. Allow engine to cool at least two minutes
before refueling.

• Use extra care with grass catchers or other
attachments. These can change the stability of the
machine.

• Replace fuel cap securely and wipe off any spilled
fuel before starting the engine as it may cause a
fire or explosion.

• Keep all movement on the slopes slow and
gradual. Do not make sudden changes in speed or
direction. Rapid engagement or braking could
cause the front of the machine to lift and rapidly flip
over backwards which could cause serious injury.

• Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
• Never refuel the machine indoors because fuel
vapors will accumulate in the area.
• Never store the fuel container or machine inside
where there is an open flame or spark, such as a
gas hot water heater, space heater or furnace.

• Avoid starting or stopping on a slope. If tires lose
traction, disengage the blade(s) and proceed slowly
straight down the slope.

• Never run a machine inside a closed area.
• To reduce fire hazard, keep the machine free of
grass, leaves or other debris build-up. Clean up oil
or fuel spillage. Allow machine to cool at least 5
minutes before storing.

DO NOT:
• Do not turn on slopes unless necessary; then, turn
slowly and gradually downhill, if possible.
• Do not mow near drop-offs, ditches or
embankments. The mower could suddenly turn
over if a wheel is over the edge of a cliff or ditch, or
if an edge caves in.

• Before cleaning, repairing or inspecting, make
certain the blade and all moving parts have
stopped. Disconnect the spark plug wire, and keep
the wire away from the spark plug to prevent
accidental starting.

• Do not mow on wet grass. Reduced traction could
cause sliding.

• Check the blade and engine mounting bolts at
frequent intervals for proper tightness. Also,
visually inspect blade for damage (e.g., excessive
wear, bent, cracked). Replace with blade which
meets original equipment specifications.

• Do not try to stabilize the machine by putting your
foot on the ground.
• Do not use grass catcher on steep slopes.

• Do not change the engine governor settings or
overspeed the engine. Excessive engine speeds
are dangerous.

• Keep all nuts, bolts and screws tight to be sure the
equipment is in safe working condition.
• Never tamper with safety devices. Check their
proper operation regularly. Use all guards as
instructed in this manual.

• Observe proper disposal laws and regulations.
Improper disposal of fluids and materials can harm
the environment and the ecology.

• After striking a foreign object, stop the engine,
remove the wire from the spark plug and thoroughly
inspect the mower for any damage. Repair the
damage before restarting and operating the mower.

• Prior to disposal, determine the proper method to
dispose of waste from your local Environmental
Protection Agency. Recycling centers are
established to properly dispose of materials in an
environmentally safe fashion.

• Grass catcher components are subject to wear,
damage and deterioration, which could expose
moving parts or allow objects to be thrown. For
your
safety
protection,
frequently
check
components and replace with manufacturer’s
recommended parts when necessary.

• Use proper containers when draining fluids. Do not
use food or beverage containers that may mislead
someone into drinking from them. Properly dispose
of the containers immediately following the draining
of fluids.

• Mower blades are sharp and can cut. Wrap the
blade(s) or wear gloves and use extra caution
when servicing blade(s).

• DO NOT pour oil or other fluids into the ground,
down a drain or into a stream, pond, lake or other
body of water. Observe Environmental Protection
Agency regulations when disposing of oil, fuel,
coolant, brake fluid, filters, batteries, tires and other
harmful waste.

• Check brake operation frequently. Adjust and
service as required.
• Muffler, engine and belt guards become hot during
operation and can cause a burn. Allow to cool
down before touching.

WARNING - YOUR RESPONSIBILITY: Restrict the use of this power machine to persons
who read, understand and follow the warnings and instructions in this manual and on the machine.

WARNING
TO AVOID SERIOUS INJURY OR DEATH
• GO UP AND DOWN SLOPES, NOT ACROSS.
AVOID SUDDEN TURNS.
• DO NOT OPERATE THE UNIT WHERE IT
COULD SLIP OR TIP.
• IF MACHINE STOPS GOING UPHILL, STOP
BLADE(S) AND BACK DOWNHILL SLOWLY.
• DO NOT MOW WHEN CHILDREN OR OTHERS
ARE AROUND.
• NEVER CARRY CHILDREN.
• LOOK DOWN & BEHIND BEFORE AND WHILE
BACKING.
• KEEP SAFETY DEVICES (GUARDS, SHIELDS,
AND SWITCHES, ETC.) IN PLACE AND WORKING.
• REMOVE OBJECTS THAT COULD BE
THROWN BY THE BLADE(S).
• KNOW LOCATION AND FUNCTION OF ALL
CONTROLS.
• BE SURE BLADE(S) AND ENGINE ARE STOPPED
BEFORE PLACING HANDS OR FEET NEAR BLADE(S).
• BEFORE LEAVING OPERATOR'S POSITION,
DISENGAGE BLADE(S), PLACE THE SHIFT
LEVER IN NEUTRAL, ENGAGE PARKING BRAKE,
SHUT OFF AND REMOVE KEY.

READ OPERATOR'S MANUAL

Figure 1 Safety Labels found on your unit

USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY.
SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE
A POWER POLE
A CORNER OF A BUILDING
OR A FENCE POST

D ON

D OT

TE D

L IN E

, RE

P RE

S EN

T IN G

A 15

° SL

O PE

Slope Gauge

F OL

15 °

WARNING
Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet). A riding mower
could overturn and cause serious injury. If operating a walk-behind mower on such a slope, it is extremely difficult to maintain
your footing and you could slip, resulting in serious injury.
Operate RIDING mowers up and down slopes, never across the face of slopes.

SECTION 5: ATTACHMENTS & ACCESSORIES
MODEL NUMBER
OEM-190-601
OEM-190-602
OEM-190-112
OEM-190-118
OEM-190-603
OEM-190-604
OEM-190-822
OEM-190-823

DESCRIPTION
FastAttach™ Twin Bagger Grass Collector (For 42-inch Decks Only)
FastAttach™ Twin Bagger Grass Collector (For 46-inch Decks Only, includes a set of blades)
Mulch Kit (For 42-inch Decks Only)
Mulch Kit (For 46-inch Decks Only, includes a set of blades)
FastAttach™ Front Bumper Kit
TracPac™ Storage Container (mounts on rear of tractor)
FastAttach™ 46-inch Front Dozer Blade
42-inch Two-stage Snowthrower

SECTION 6: TRACTOR SET-UP
ATTACHING THE BATTERY CABLES

GAS AND OIL FILL-UP

NOTE: The positive battery terminal is marked

Service the engine with gasoline and oil as
instructed in the separate engine manual packed
with your tractor. Read instructions carefully.

Pos. (+). The negative battery terminal is marked
Neg. (–).

IMPORTANT: Your tractor is shipped with oil;
however, you MUST check the oil level before operating. Be careful not to overfill. Overfilling with oil may
cause the engine to smoke. This will result in poor
engine performance and could cause permanent
engine damage.

• The positive cable (heavy red wire) is secured
to the positive battery terminal (+) with a hex
bolt and hex nut at the factory. Make certain
that the rubber boot covers the terminal to
help protect it from corrosion.
• Remove the hex bolt and wing nut from the
negative cable. Attach the negative cable
(heavy black wire) to the negative battery
terminal (–) with the bolt and wing nut.

The gasoline tank is located under the hood and has
a capacity of approximately two gallons. Do not
overfill.
WARNING: Gasoline produces noxious
fumes. Never fill fuel tank indoors. Always
fill the fuel tank in a well ventilated area to
avoid inhalation of gasoline fumes.

• Place the hold-down strap in position over the
battery to secure it in place. See Figure 2.
Positive
Terminal

Rubber
Boot

WARNING: Never smoke while fueling
Battery

Wing
Nut

Negative
Terminal

your tractor or fill the fuel tank while engine
is running or while engine is hot.

WARNING: Do not fill closer than 1/2
inch from the top of the fuel tank to prevent
spills and to allow for fuel expansion. If
gasoline is accidently spilled, move tractor
away from area of spill. Avoid creating any
source of ignition until gasoline vapors
have disappeared.

Tray

Hold-down Strap

INSTALLING THE MULCH KIT

Bolt

On units equipped with a 46-inch deck, follow the
instructions included with the mulch kit which is
packaged separately within the crate.
On units equipped with a 42-inch deck, the mulch kit
is installed at the factory. To remove it, unfasten the
wing knob found on the top of the cutting deck and
carefully pull the mulch plug out from the discharge
area of the deck.

Figure 2

NOTE: If battery is put into service after date
shown on top of battery, charge for minimum of one
hour at 6-10 amps. Refer to the MAINTENANCE
section of this manual for more detailed instructions
regarding proper battery charging procedure.
7

SECTION 7: CONTROLS

I
C

1/10
P

J
E
K
L

NOTE: Steering Wheel not shown for clarity.
Figure 3
A
B
C
D
E
F
G

Ignition Switch
Throttle Control Lever
Choke Control (if so equipped)
Indicator Monitor/Hour Meter
Lift Lever
PTO (Power Take-Off) Lever
AutoDrive Pedal

H
I
J
K
L
M

Brake Pedal
Parking Brake Button
Shift Lever
Seat Adjustment Lever
Cup Holder
Cruise Control Button

™

NOTE: Any reference in this manual to the RIGHT or LEFT side of the tractor is observed from operator’s position.
8

IGNITION SWITCH

IMPORTANT: When using PTO operated
equipment such as the cutting deck or other
attachments, always operate the tractor with the
throttle lever in the FAST (rabbit) position.

To start the engine, insert key into the ignition switch
and turn clockwise to the START position. Release
key to the ON position once engine has fired. See
Figure 4. Refer to STARTING THE ENGINE in the
OPERATION section of this manual for detailed
starting instructions. The ignition switch is also used
to operate the headlights. Refer to OPERATING
THE HEADLIGHTS in the OPERATION section of
this manual for detailed instructions

CHOKE CONTROL
On some units, moving the
throttle lever all the way
forward activates the engine’s
choke control. On all other
units, the choke control can be
found on the left side of the
dash panel and is activated by
pulling the knob outward. Activating the choke
control closes the choke plate on the carburetor and
aids in starting the engine. Refer to STARTING THE
ENGINE in the OPERATION section of this manual
for detailed starting instructions.

WARNING: Remove the key from the
tractor when the tractor is not in use to
prevent accidental starting.
Off
On/Lights
On

INDICATOR MONITOR / HOUR METER
Your tractor is equipped with four indicator lights and
an hour meter located on the left side of the dash
panel. See Figure 6.

Start

Battery

Figure 4

Oil
+

THROTTLE CONTROL LEVER
The throttle lever is located on the right side of the
tractor’s dash panel. This lever controls the speed of
the engine, and on some units the choke control
also. When set in a given position, the throttle will
maintain a uniform engine speed. See Figure 5.

Hour
Meter
1/10

Throttle
Symbol
Choke
Position

Throttle
Symbol

Figure 6
Fast
Position

If a light illuminates when attempting to start the unit,
proceed as follows:
BRAKE — Depress the brake pedal.
PTO —
Move PTO lever into the disengaged
(OFF) position.
OIL—
Check the crankcase oil level, and add
oil as required.
The BATTERY indicator light will illuminate any time
the ignition key is the On position and the engine is
not running. If it illuminate’s while the engine is
running, it indicates that the battery is in need of a
charge. Refer to the MAINTENANCE section of this
manual for the proper battery charging procedure.

Fast
Position

Slow
Position

Brake

PTO

Slow
Position

The hour meter operates whenever the ignition key
is in the On or On/Lights position and records the
actual hours of tractor operation.

Figure 5

LIFT LEVER

BRAKE PEDAL

BRAKE

The lift lever is used to change the operating position
(height) of the cutting deck. To operate, move the
lever to the left, then place in the notch best suited
for your application.

The brake pedal is located on the right front side of
the tractor above the AutoDrive pedal along the
running board. The brake pedal can be used for
sudden stops or setting the parking brake.

PTO (POWER TAKE-OFF) LEVER

NOTE: The brake pedal must be fully depressed to

™

activate the safety interlock switch when starting the
tractor.

PARKING BRAKE BUTTON

To set the parking brake, fully depress
the brake pedal and push the parking
brake button in. Hold the button in
while taking your foot off the brake
pedal. Both the parking button and
the brake pedal will then stay
depressed. To release the parking
brake, depress the brake pedal
slightly. The parking brake button will
then return to its original position.

The PTO lever is located on the left side of the
dashboard next to the steering wheel. Move the PTO
lever forward to engage the power to the cutting
deck or other attachments; move the PTO lever
backward (toward the rear of the tractor) to
disengage the power to the attachments.

NOTE: The PTO lever must be in the disengaged
(OFF) position when starting the engine, when
shifting into reverse and if the operator leaves the
seat.

NOTE: The parking brake must be set if the
operator leaves the seat with the engine running or
the engine will automatically shut off.

AUTODRIVE PEDAL
™

IMPORTANT: Always set the parking brake
when leaving the tractor unattended.

SHIFT LEVER

The shift lever is located
on the left side of the
fender and has three
positions,
FORWARD,
NEUTRAL and REVERSE.
The brake pedal must be
depressed and the tractor
must not be in motion
when the moving shift
lever.

The AutoDrive pedal is located below the brake
pedal on the right front side of the tractor along the
running board. Depress the AutoDrive pedal with
your right foot when the tractor shift lever is in either
forward or reverse to cause the tractor to move.
Ground speed is also controlled with the AutoDrive
pedal. The further down the pedal is depressed, the
faster the tractor will travel. The pedal will return to
its original position when it’s not depressed.
™

™

IMPORTANT: Never
force the shift lever. Doing
so may result in serious
damage to the tractor’s
transmission.

IMPORTANT: Always set the parking brake
when leaving the tractor unattended.

Shift
Knob

CRUISE CONTROL BUTTON

SEAT ADJUSTMENT LEVER

The cruise control button is located on
the tractor dash panel to the left of the
ignition switch. Push the cruise control
button while traveling forward at a
desired speed. While holding the
button in, release pressure from the
AutoDrive pedal. This will engage the
cruise control and allow the tractor to
remain at that speed without applying
pressure to the AutoDrive pedal.
Depress the brake pedal or the
AutoDrive pedal to deactivate cruise
control. Refer to the OPERATION section of this
manual for detailed instructions regarding the cruise
control feature.

To adjust the seat forward or backward, slide the
seat adjustment lever to the left and reposition the
seat to the desired position. Once a comfortable
position is found, release the seat adjustment lever
to lock the seat in place. Refer to the
ADJUSTMENTS section of this manual for more
detailed instructions.

™

CUP HOLDER

™

The tractor’s cup holder is located on the fender to
the left of the seat, just to the rear of the shift lever.

™

WARNING: Never operate the tractor
under the influence of alcoholic beverages
or drugs of any kind. Doing so can result in
serious personal injury or death.

SECTION 8: OPERATION
SAFETY INTERLOCK SWITCHES
IMPORTANT: Tampering with or attempting to

This tractor is equipped with a safety interlock
system for the protection of the operator. If the
interlock system should ever malfunction, do not
operate the tractor. Contact an authorized MTD
Service Dealer in your area. The safety interlock
system prevents the engine from cranking or starting
unless the brake pedal is fully depressed, and the
PTO lever is in the disengaged (OFF) position.

bypass the tractors Safety Interlock Switches in any
way WILL void your warranty.

WARNING

• The safety interlock system will automatically
shut off the engine if the operator leaves the
seat before engaging the brake lock.

•
•
•
•

• The safety interlock system will automatically
shut off the engine if the operator leaves the
seat with the PTO lever in the engaged (ON)
position, regardless of whether the brake lock
is engaged. The PTO lever must be in the
disengaged (OFF) position to restart the
engine.

•
•
•
•
•
•
•
•

• The safety interlock system will automatically
shut off the engine if the PTO lever is moved
into the engaged (ON) position with the shift
lever in the REVERSE position.

WARNING: Do NOT attempt to bypass
or disconnect the tractor’s safety interlock.
Doing so could result in serious personal
injury or death.

AVOID SERIOUS INJURY OR DEATH
GO UP AND DOWN SLOPES, NOT ACROSS.
AVOID SUDDEN TURNS.
DO NOT OPERATE THE UNIT WHERE IT COULD SLIP OR TIP.
IF MACHINE STOPS GOING UPHILL, STOP BLADE(S) AND BACK
DOWNHILL SLOWLY.
DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND.
NEVER CARRY CHILDREN.
LOOK DOWN AND BEHIND BEFORE AND WHILE BACKING.
KEEP SAFETY DEVICES (GUARDS, SHIELDS, AND SWITCHES) IN
PLACE AND WORKING.
REMOVE OBJECTS THAT COULD BE THROWN BY THE BLADE(S).
KNOW LOCATION AND FUNCTION OF ALL CONTROLS.
BE SURE BLADE(S) AND ENGINE ARE STOPPED BEFORE PLACING HANDS OR FEET NEAR BLADE(S).
BEFORE
LEAVING OPERATOR’S
POSITION,
DISENGAGE
BLADE(S), PLACE THE SHIFT LEVER IN NEUTRAL, ENGAGE
BRAKE LOCK, SHUT ENGINE OFF AND REMOVE KEY.
READ OPERATOR’S MANUAL

SETTING THE CUTTING HEIGHT

STOPPING THE ENGINE

Select the height position of the cutting deck by
placing the deck lift lever in any of the six different
cutting height notches on the right side of the fender.
Then adjust the deck wheels so that they are at least
1/4 inch to 1/2 inch above the ground when the
tractor is on a smooth, flat surface such as a
driveway.

• Place the PTO lever in the disengaged (OFF)
position
• Move the throttle control into the SLOW
(turtle) position and allow the engine to "idle
down" for ten seconds. Failure to do so may
result in an engine afterfire.

WARNING: Keep hands and feet away

• Turn the ignition key counterclockwise to the
OFF position.

from the discharge chute opening of the
cutting deck.

• Remove the key from the ignition switch to
prevent accidental starting.

NOTE: The deck wheels are an anti-scalp feature

IMPORTANT: If you think you’ve struck a foreign
object, stop the engine immediately. Remove the
wire(s) from the spark plug(s), thoroughly inspect the
unit for any damage, and repair the damage before
restarting and operating the tractor.

of the deck and are not designed to support the
weight of the cutting deck.
Refer to the ADJUSTMENTS section of this manual
for more detailed instructions regarding various deck
adjustments.

DRIVING THE TRACTOR
WARNING: Avoid

STARTING THE ENGINE

sudden
starts,
excessive speed and sudden stops.

NOTE: Refer to the TRACTOR SET-UP section of
this manual for Gasoline and Oil fill-up instructions.

WARNING: Do not leave the seat of the

• Insert the tractor key into the ignition switch.

tractor without first placing the PTO lever in
the disengaged (OFF) position, depressing
the brake pedal and engaging the parking
brake. If leaving the tractor unattended,
also turn the ignition key off and remove
the key.

• Place the PTO lever in the disengaged (OFF)
position.
• Depress the brake pedal and set the parking
brake.
• Place the shift lever in the NEUTRAL position.

• Depress the brake pedal to release the
parking brake and let the pedal up. Move the
throttle lever into the FAST (rabbit) position.

• Move the throttle control lever into the FAST
(or CHOKE, if so equipped) position.
• Pull out the choke control knob, if so equipped
(a warm engine may not require choking).

IMPORTANT: Do NOT use the shift lever to

• Turn the ignition key clockwise to the START
position. After the engine starts, release the
key. It will return to the ON position.

change the direction of travel when the tractor is in
motion. Always use the brake pedal to bring the
tractor to a complete stop before shifting.
• To move forward, place the shift lever in the
FORWARD position, then slowly depress the
AutoDrive pedal until the desired speed is
achieved.

IMPORTANT: Do NOT hold the key in the START
position for longer than ten seconds at a time. Doing
so may cause damage to your engine’s starter.

™

NOTE: If starting problems are encountered, refer

• To move in reverse, place the shift lever in the
REVERSE position, check that the area
behind is clear then slowly depress the
AutoDrive pedal.

to the TROUBLESHOOTING section of this manual.
After the engine starts, slowly release the brake
pedal. As the engine warms up, gradually push the
choke control knob inward (or move the throttle
control lever out of the CHOKE position into the
FAST position) to open up the choke plate on the
engine’s carburetor.

™

SETTING THE CRUISE CONTROL
NOTE: The cruise control feature can only be
operated in the forward direction.
• Place the shift lever in the FORWARD
position, then slowly depress the AutoDrive
pedal until the desired speed is achieved.

NOTE: Do NOT leave the choke control out while

™

operating the tractor. Doing so will result in a "rich"
fuel mixture and cause the engine to run poorly.

• Lightly depress the cruise control button.
12

To turn the tractor’s headlights off:

• While continuing to hold the cruise button in,
lift your foot from the AutoDrive pedal (you
should feel the cruise latch engage).
™

• Turn the key either into the On position (to
leave the engine running) or the Off position
(to shut the engine off). Refer to Figure 4.

• If properly engaged, the cruise control button
and the AutoDrive pedal should lock in the
down position, and the tractor will maintain the
same forward speed.
™

IMPORTANT: Never move the key into the Start
position while the engine is running. Doing so may
cause damage to your engine’s starter.

• Disengage the cruise control using one of the
following methods:
•

Depress the brake pedal to disengage the
cruise control and stop the tractor.

•

Lightly depress the AutoDrive™ pedal.

STOPPING THE ENGINE
• Place the PTO lever in the disengaged (OFF)
position.
• Move the throttle control into the SLOW
position and allow the engine to "idle down"
for ten seconds, then turn the ignition key
counterclockwise to the OFF position.

To change to the reverse direction when operating
with cruise control, depress the brake pedal to
disengage the cruise control and bring the tractor to
a complete stop. Then place the shift lever in the
REVERSE position and depress the AutoDrive
pedal.

• Remove the key from the ignition switch to
prevent accidental starting.

™

DRIVING ON SLOPES
Refer to the SLOPE GAUGE on page 6 to help
determine slopes where you may not operate safely.

WARNING: Do not mow on inclines with
a slope in excess of 15 degrees (a rise of
approximately 2-1/2 feet every 10 feet).
The tractor could overturn and cause
serious injury.
Operate the tractor up and down slopes, never
across slopes. Do not drive so that the tractor may
tip over sideways.
Before operating the tractor on any slope, walk the
slope to look for possible hazards such as rocks.
mounds, ruts, stumps or other surface irregularities
which could cause the tractor to be upset.
Avoid turns when driving on a slope. If a turn must
be made, turn down the slope. Turning up a slope
greatly increases the chance of a roll over.
Avoid stopping when driving up a slope. If it is
necessary to stop while driving up a slope, start up
smoothly and carefully to reduce the possibility of
flipping the tractor over backward.

USING THE LIFT LEVER
To raise the cutting deck, move the lift lever to the
left, then place it in the notch best suited for your
application. Refer to SETTING THE CUTTING
HEIGHT earlier in this section.

ENGAGING THE PTO
(POWER TAKE-OFF) LEVER
• Move the throttle control lever to the FAST
(rabbit) position.
• Move the PTO lever forward into the engaged
(ON) position.
• Keep the throttle lever in the FAST (rabbit)
position for the most efficient use of the
cutting deck and other attachments.
• The operator must remain in the tractor seat
at all times. If the operator should leave the
seat without moving the PTO lever into the
disengaged (OFF) position and setting the
parking brake, the engine will shut off.

OPERATING THE HEADLIGHTS
To turn the tractor’s headlights on:
• Start the engine following the instructions
earlier in this section.

IMPORTANT: The PTO lever cannot be in the

• Turn the key one notch counterclockwise into
the On/Lights position of the ignition switch.
Refer to Figure 4.

engaged (ON) position when the tractor is driving in
the reverse direction. The safety interlock system will
automatically shut off the engine if the PTO lever is
moved into the engaged (ON) position with the shift
lever in the REVERSE position. Refer to SAFETY
INTERLOCK SWITCHES earlier in this section.

MOWING

• Do not cut the grass too short. Short grass
invites weed growth and yellows quickly in dry
weather.

This tractor is equipped with one of MTD ’s high
quality cutting decks. The following information will
be helpful when using the cutting deck with your
tractor.

• Mowing should always be done with the
engine at full throttle.
• Do not mow at high ground speed, especially
if a mulch kit or grass collector is installed.

WARNING: To avoid possible injury, do
not allow anyone in the area of the tractor
while mowing. Even if the area to be
mowed has been cleared of foreign
objects, small objects may be picked up
and discharged by the mower.

• Under heavier conditions it may be necessary
to go back over the cut area a second time to
get a clean cut.
• Do NOT attempt to mow heavy brush and
weeds and extremely tall grass. Your tractor is
designed to mow lawns, NOT clear brush.

WARNING: Never direct the discharge
of material toward bystanders or allow
anyone near the machine while in
operation.

• Keep the blades sharp and replace the blades
when worn. Refer to the MAINTENANCE
section of this manual for proper blade
sharpening instructions.

• For best results it is recommended that the
first two laps be cut with the discharge thrown
towards the center. After the first two laps,
reverse the direction to throw the discharge to
the outside for the balance of cutting. This will
give a better appearance to the lawn.

SECTION 9: ADJUSTMENTS
LEVELING THE DECK

taken should be between 1/4" and 3/8" less
than the second measurement. Determine the
approximate distance necessary for proper
adjustment and proceed, if necessary, to the
next step.

WARNING: Cutting blades are sharp.
Always protect hands by wearing heavy
leather work gloves to grasp blades.

• Loosen the two jam nuts on the rear side of
the deck stabilizer bracket. See Figure 7A.

NOTE: Check the tractor’s tire pressure before
performing any deck leveling adjustments. Refer to
TIRES in the maintenance section of this manual for
further information regarding tire pressure.

• Locate the two lock nuts on the opposite side
of the stabilizer bracket. See Figure 7A.
Tighten the lock nuts to raise the front of the
deck; loosen the lock nuts to lower the front of
the deck.

Front to Rear
The front of the cutting deck is supported by a stabilizer bar that can adjusted to level the deck from front
to rear. The front of the deck should be 1/4" to 3/8"
lower than the rear of the deck. Adjust if necessary
as follows:

• Retighten the two jam nuts loosened earlier
when proper adjustment is achieved.

Side to Side

WARNING: Turn the tractor’s engine

If the cutting deck appears to be mowing unevenly, a
side to side adjustment can be performed. Adjust if
necessary as follows:

off, remove the key from the ignition switch
and apply the tractor’s parking brake before
making any adjustments to the cutting
deck.

WARNING: Turn the tractor’s engine
off, remove the key from the ignition switch
and apply the tractor’s parking brake
before making any adjustments to the
cutting deck.

• With the tractor parked on a firm, level
surface, place the lift lever in the top notch
(highest position) and rotate the blade nearest
the discharge chute so that it is parallel with
the tractor.

• With the tractor parked on a firm, level
surface, place the lift lever in the top notch
(highest position) and rotate the both blades
so that they are perpendicular with the tractor.

• Measure the distance from the front of the
blade tip to the ground and the rear of the
blade tip to the ground. The first measurement
14

• Measure the distance from the outside of the left blade tip to the ground and the distance from the
outside of the right blade tip to the ground. Both measurements taken should be equal. If they’re not,
proceed to the next step.
• Loosen, but do NOT remove, the hex cap screw on the left deck hanger bracket. See Figure 7B.
• Balance the deck so that both blade tip measurements taken earlier are equal.
• Retighten the hex cap screw on the left deck hanger bracket when proper adjustment is achieved.
Lock
Nuts

Deck
Stabilizer
Bracket

Deck

Jam
Nuts
Hex Cap Screw
Deck Hanger Bracket

Front to Rear

Side to Side
Figure 7

SEAT ADJUSTMENT

• Remove the hex nut and lock washer on the
top of ball joint. See Figure 9.

To adjust the position of the seat, move the seat
adjustment lever (located under the seat) to the left
and slide the seat forward or backwards. See Figure
8. Make sure seat is locked into one of the six
adjustment positions before operating the tractor.

Hex Nut and
Lock Washer

Seat

Zerk Fittting
(if so equipped)

Pivot Bar

Axle

Drag Link
Jam Nut

Ball Joint

Seat Adjustment Lever

Figure 8

Figure 9
• Thread the ball joint toward the jam nut to
shorten the drag link. Thread the ball joint
away from the jam nut to lengthen the drag
link.

STEERING ADJUSTMENT
If the tractor turns tighter in one direction than the
other, or if the ball joints are being replaced due to
damage or wear, the steering drag links may need to
be adjusted.
Adjust the drag links so that equal lengths are
threaded into the ball joint on the left side and the
ball joint on the right side:

NOTE: Threading the ball joints too far onto the

• Loosen the jam nut found on the drag link at
the rear of the ball joint. See Figure 9.

drag links will cause the front tires to "toe-in" too far.
Proper toe-in is between 1/16" and 5/16".

• Replace hex nut and lock washer and
retighten the jam nut after proper adjustment
is achieved.

BRAKE ADJUSTMENT

Front tire toe-in can be measured as follows:
• Place the steering wheel in position for
straight ahead travel. Insert a 1/4" dowel up
through aligning holes in both the steering
gear and support plate. See Figure 10.

If the tractor does not come to a complete stop when
the brake pedal is completely depressed, or if the
tractor’s rear wheels can roll with the parking brake
applied, the brake is in need of adjustment. The
brake disc can be found on the right side of the
transmission in the rear of the tractor. Adjust if
necessary as follows:

Drag Links

Insert Dowel
Here

• Looking at the transmission from the right side
of the tractor, locate the compression spring
and brake disc. See Figure 11.

Steering Gear

Hex Nut

Support
Plate
Steering
Shaft

NOTE: View shown from beneath tractor.
Figure 10
• In front of the axle, measure the distance
horizontally from the inside of the left rim to
the inside of the right rim. Note the distance.

Set Gap
at .011"

• Behind the axle, measure the distance
horizontally from the inside of the left rim to
the inside of the right rim. Note the distance.

Brake Disc

Compression
Spring

NOTE: View shown from beneath tractor.

• The measurement taken in front of the axle
should be between 1/16" and 5/16" less than
the measurement taken behind the axle.

Transmission

Figure 11
• Loosen, but do NOT remove, the hex nut
found on the right side of the brake assembly.
See Figure 11.

• Adjust if necessary.
• Remove the dowel inserted earlier before
attempting to operate the tractor.

• Using a feeler gauge, set the gap between the
brake disc and the brake puck at .011".

CARBURETOR ADJUSTMENT

• Re-tighten the hex nut loosened earlier.

WARNING: If any adjustments are

PTO (POWER TAKE-OFF) ADJUSTMENT

made to the engine while the engine is
running (e.g. carburetor), disengage all
clutches and blades. Keep clear of all
moving parts. Be careful of heated
surfaces and muffler.

If your tractor’s engine fails to crank when following
the starting instructions found earlier in this manual,
the PTO may be in need of adjustment. With the
PTO lever in the disengaged (OFF) position, the
lever must go back far enough so that a metal tab
that is bolted to the base of the lever can fully
depress a plunger saftey switch mounted to the
tractor’s frame beneath the fuel tank. Adjust, if
necessary, as follows:

NOTE: A dirty air cleaner will cause an engine to
run rough. Be certain it is clean and properly
attached before adjusting carburetor. Refer to
separate engine manual packed with your unit for
information regarding air cleaner maintenance.

WARNING: If the blades on your
tractor’s cutting deck continue to turn with
the PTO lever in the disengaged (OFF)
postion, stop the tractor immediately and
perform the following steps.

Refer to separate engine manual packed with your
unit for carburetor adjustment information or see an
authorized engine service dealer.

• Turn the tractor’s engine off, remove the key
from the ignition switch and apply the tractor’s
parking brake.
16

• Reinsert the PTO engagement rod into the
hole in the PTO adjuster link and reinsert the
cotter pin removed earlier (if undamaged).

• Locate the PTO engagement rod and the PTO
adjuster link by looking at the tractor’s
underside. See Figure 12.
• Remove the cotter pin that affixes the lower
end of the PTO engagement rod to the PTO
adjuster link. Save the pin. See Figure 12.
• Take the lower end of the PTO engagement
rod out of the hole in the PTO adjuster link
and move the rod as far back into the
disengaged (OFF) position as possible.
• Thread the PTO adjuster link outward until the
hole in the end of it is aligned with the PTO
engagement rod.

PTO Adjuster Link
Cotter Pin
PTO Engagement Rod

Figure 12

SECTION 10: MAINTENANCE
WARNING: Disconnect the spark plug
wire(s) and ground against the engine
before performing any adjustments, repairs
or maintenance.

• Pop open the protective cap on the end of the
oil drain valve to expose the oil drain port. See
Figure 13.
• Push oil drain hose (packed with unit) onto the
oil drain port. Route the opposite end of the
hose into an appropriate oil collection
container with a capacity great enough to
collect the used oil.

ENGINE
Refer to the separate engine manual for engine
maintenance instructions.

• Push the oil drain valve in slightly, then rotate
counterclockwise and pull outward to begin
draining oil. See Figure 13.

Check engine oil level before each use as
instructed in the separate engine manual packed
with your unit. Read and follow instructions
carefully.

• Service the oil filter (if so equipped) as
instructed in the separate engine manual
packed with your unit.
Perform the above steps in the opposite order after
oil has finished draining.

Changing Engine Oil
• Unscrew oil fill cap and remove dipstick from
the oil fill tube. See Figure 13.
Oil Fill Cap

• Refill the engine with new motor oil.

Protective Cap
Oil Drain Hose

IMPORTANT: Refill the engine with the proper
capacity and weight of motor oil as instructed in the
separate engine manual.
Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extremely
dusty condition. To service the air cleaner, refer to
the separate engine manual packed with your unit.

Oil Fill Tube

The spark plug(s) should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing season;
check engine manual for correct plug type and gap
specifications.

Oil Drain Valve
Oil Drain Port

NOTE: Single-cylinder engine shown.
Valve location will vary with engine style.

Figure 13

CLEANING THE ENGINE AND DECK

• Lower the deck by moving the lift lever into the
bottom notch on the right fender.

Any fuel or oil spilled on the machine should be
wiped off promptly. Do NOT allow grass, leaves, and
dirt to accumulate around the cooling fins of the
engine or on any other part of the machine,
especially the pulleys and other moving parts.
Clean the underside of the deck with a wisk broom,
putty knife or forced air after each mowing.

• Grasp the PTO idler pulley bracket and pivot it
toward the discharge chute to relieve tension
on the belt. Remove the deck belt from the
bottom portion of the engine pulley and from
around the PTO idler pulley.

NOTE: On units equipped with a 46-inch deck, the
bottommost belt on the deck does NOT need to be
removed in order to remove the deck.

IMPORTANT: Do NOT use a garden hose to
clean the cutting deck. The ball bearings in the blade
spindles are sealed at the factory and cannot be relubricated. Spraying water near the spindles can
significantly reduce the life of the bearings.

• Looking at the cutting deck from the right side
of the tractor, locate the deck support pin on
the rear right side of the deck.
• Pull the deck support pin outward to release
the deck from the deck lift arm. See Figure 14.

CUTTING DECK REMOVAL
WARNING:

• Rotate the pin slightly toward the rear of the
tractor and release the pin into the hole
provided.

Before performing any
maintenance, move the PTO lever into the
disengaged (OFF) position, engage the
parking brake, turn the ignition key to the
OFF position and remove the key from the
switch to avoid accidental starting.

• Repeat the above steps on the left side of the
tractor.
• Move the lift lever into the top notch on the
right fender to raise the deck lift arms out of
the way.

Several attachments are available for your tractor.
To mount some of these attachments and in order to
perform certain maintenance procedures, the deck
must be removed from the tractor. To properly
remove the cutting deck, proceed as follows:

• Gently slide the cutting deck toward the front
of the tractor allowing the hooks on the deck
to release themselves from the deck stabilizer
rod. Do NOT let the deck fall to the ground.

WARNING: Do NOT remove deck
immediately after operating the tractor.
Allow the engine and other moving parts
ample time to cool down.

NOTE: To properly remount the cutting deck,

• Move the PTO lever into the disengaged
(OFF) position and engage the parking brake.

perform the above steps in reverse order. Having a
second person assist you will ease this procedure.

• Gently slide the cutting deck (from the right
side) out from underneath the tractor.

Deck Lift Arms

To Lift Assembly

PTO Idler Pulley
PTO Belt

Deck Support Pins

Engine Pulley
Deck
Stabilizer
Bracket

Hooks

PTO Idler Pulley Bracket
(mounted on tractor)

Deck Stabilizer Rod

NOTE: Belt covers and other tractor components not shown for clarity. 42-inch deck shown
Figure 14
18

Front of Tractor

CHANGING THE DECK BELT(S)
All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding or
rotting are present.

IMPORTANT: The V-belts found on your tractor are specially designed to engage and disengage safely. A
substitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine,
use factory approved belts.
To change or replace the deck belt(s) on your tractor, proceed as follows:

NOTE: Removing the deck from the tractor as instructed earlier in this section will ease the following steps,
but is not necessary.
42-inch decks
• Lower the deck by moving the lift lever into the bottom notch on the right fender.
• Remove the belt guards by removing the self-tapping screws that fasten them to the deck surface.
• Grasp the PTO idler pulley bracket and pivot it toward the discharge chute to relieve tension on the belt.
• Remove the deck belt from the bottom portion of the engine pulley and from around the PTO idler
pulley.
• Route the new belt as shown in Figure 14, around the deck pulleys, idler pulley and engine pulley.

IMPORTANT: It is recommended that the PTO be readjusted after replacing the deck belt. Refer to PTO
(POWER TAKE-OFF) ADJUSTMENT in the ADJUSTMENTS section of this manual for the proper procedure.
• Remount the belt guards removed earlier.
Engine Pulley

PTO Idler Pulley
(mounted on tractor)

Deck belt (Bottom)
PTO belt (Top)

Deck Idler Pulley

Right Hand
Double Pulley
(beneath belt guard)

Left Hand
Double Pulley
Center Pulley
Self-Tapping Screws

NOTE: Left hand belt cover not shown for clarity. 46-inch deck shown.
Figure 15
46-inch decks
• Lower the deck by moving the lift lever into the bottom notch on the right fender.
• Remove the belt guards by removing the self-tapping screws that fasten them to the deck.
• Grasp the PTO idler pulley bracket and pivot it toward the discharge chute to relieve tension on the belt.
• Remove the deck belt from the bottom portion of the engine pulley and from around the PTO idler
pulley.
• Remove and discard old belt.
• Route the new belt(s) as shown in Figure 15. OEM belt part numbers shown below.
19

PTO (Top) Belt
Bottom Belt

42-Inch Deck
754-0472
N/A

46-Inch Deck
754-0476
754-0349

CHANGING THE TRANSMISSION DRIVE BELT(S)
All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding or
rotting are present.

NOTE: It’s recommended that both drive belts be replaced at the same time.
• Remove the cutting deck as instructed earlier in this section.
• After disconnecting the battery cables, remove the battery and battery tray from beneath the seat.

IMPORTANT: When removing the battery, disconnect the NEGATIVE (Black) wire from it’s terminal first,
followed by the POSITIVE (Red) wire. Re-install in reverse order.
Upper Drive Belt
• Locate the transmission idler pulley on the upper drive belt by looking through the battery tray opening.
See Figure 16.
• Grasp the bracket and pivot the transmission idler pulley toward the rear of the tractor to release
tension on the upper drive belt.
• Remove the belt from around the transmission idler pulley.
• Remove the upper drive belt from around the transmission pulley and the variable-speed pulley.

NOTE: Slowly rotate the pulley counterclockwise to roll the belt off of it.
• Remove the upper drive belt by pulling it up through the battery tray opening.
• Reroute the new upper drive belt as shown in Figure 16.
Lower Drive Belt

NOTE: Proper removal of the lower drive belt requires special tools and the removal of several tractor
components. Read through the following procedure prior to attempting it to determine if you feel you could
successfully complete it. If you don’t, see an authorized MTD service dealer to have the belt changed.
IMPORTANT: Note the routing of the lower drive belt around both the pulleys and the belt keepers
BEFORE performing the following steps.
• Locate the variable-speed pulley by looking through the battery tray opening. See Figure 16.
• Remove the variable-speed pulley by loosening the hex bolt that affixes it to the transmission. Use a
second wrench to hold the hex nut on the bottom side of the pulley.
• Slide the belt off of the variable-speed pulley as you lift the pulley up and out through the battery tray
opening.

NOTE: Jacking the rear of the tractor up off the ground and securing it with jackstands at this point in the
procedure will ease the following steps, but is not necessary.

Battery Tray
Opening

Variable-speed
Pulley

Drive belt (Lower)

Shift Lever
Rear Idler Pulley

Belt Keeper

Drive belt (Upper)

Front Idler Pulley

Idler Bracket

Belt Keeper

to AutoDrive pedal
™

Double-Idler Bracket

Engine Pulley

Transmission Idler Pulley

Single-speed
Transmission

Belt Keeper

Transmission Pulley

Front of Tractor

NOTE: View shown from above tractor.

Figure 16
• Remove the hex bolt from the center of the
engine pulley. Do NOT attempt to remove the
engine pulley at this time. See Figure 18.

• Remove the rear idler pulley from the doubleidler bracket while unrouting the belt from
around both the rear and the front idler pulley.
Refer to Figure 16.
• Remove the cotter pin that affixes the lower
end of the PTO engagement rod to the PTO
adjuster link. Save the pin for reassembly.
See Figure 17.

Hex Bolt
Engine Pulley

NOTE: View shown from beneath tractor.
Figure 18

PTO Adjuster Link
Cotter Pin
PTO Engagement Rod

IMPORTANT: When remounting the engine
pulley, torque the center hex bolt to between 38 footpounds and 50 foot-pounds.

Figure 17

• Remove the two hex bolts (from both sides of
the tractor) that affix the PTO actuator bracket
to the tractor frame. See Figure 19.

Idler
Adj. Rod

Place Wrenches Here

Neutral
Return
Bracket

Hex Bolts

Hairpin
Clips

PTO Actuator
Bracket

AutoDrive™ Pedal
Return Spring

Deck Stop

Speed Control
Assembly

Figure 21
• Remove both hairpin clips from the pin which
is fastened to the speed control assembly (be
careful not to lose the small flat washers found
on the pin). See Figure 21.

Figure 19
• Carefully lower the PTO actuator bracket and
the engine pulley as an assembly while
removing the drive belt from the upper portion
of the engine pulley.

• Remove the AutoDrive pedal return spring.
™

• Using two 9/16" wrenches, remove the pin
from the speed control assembly. See Figure
21.
Thread the idler adjustment rod inward or outward to
lengthen or shorten the travel of the double-idler
bracket until proper adjustment is achieved.

• Remove the drive belt by feeding it from both
ends toward the front idler pulley on the
double-idler bracket. See Figure 16.
• Reassemble by following the above steps in
reverse order.
• Reroute the new belt around the pulleys and
belt keepers EXACTLY as the old one was
routed. Refer to Figure 16.
The AutoDrive pedal is properly adjusted when the
hole found in the double-idler bracket has
approximately 1-3/8" of travel with ten pounds of
pressure applied to the AutoDrive pedal. See
Figure 20.

• Reassemble by following the above steps in
reverse order.

IMPORTANT: After replacing the drive belts,

™

perform the PTO adjustment as instructed in the
ADJUSTMENTS section of this manual prior to
operating the tractor.

™

Double-idler
Bracket

Hole

CUTTING BLADES
WARNING: Cutting blades are sharp.
Always protect hands by wearing heavy
leather work gloves to grasp blades.

Idler
Adj. Rod

The blades may be removed for sharpening or
replacement as follows.
Front of Tractor

• Remove the deck from beneath the tractor,
(refer to DECK REMOVAL earlier in this
section for detailed instructions) then gently
flip the deck over to expose its underside.

NOTE: View shown from above tractor.
Figure 20
Adjust the AutoDrive pedal after replacing the drive
belts on your tractor, if necessary, as follows:

• Place a block of wood between the center
deck housing baffle and the cutting blade to
act as a stabilizer. See Figure 22.

™

• Locate the speed control assembly on the
underside of the steering support bracket. See
Figure 21.

• Use a 15/16" wrench to remove the hex flange
nut that secures the blade to the spindle
assembly. See Figure 22.

NOTE: The hex flange nut has a right-handed

IMPORTANT: Use a torque wrench to tighten the

thread pattern. Do NOT attempt to force the nut in
the incorrect direction. Doing so may damage the
nut and create a safety hazard.

blade spindle hex flange nut to between 70 footpounds and 90 foot-pounds.

BATTERY
Block of Wood

Hex Flange Nut

The battery is sealed and is maintenance-free. Acid
levels cannot be checked.
• Always keep the battery cables and terminals
clean and free of corrosive build-up.
• After cleaning the battery and terminals, apply
a light coat of petroleum jelly or grease to the
terminals and over the positive terminal boot.

Spindle
Assembly

• Always keep the boot positioned over the
positive terminal to prevent shorting.

Cutting Blade

Figure 22

IMPORTANT: If removing the battery for any

To properly sharpen the cutting blades, remove
equal amounts of metal from both ends of the blades
along the cutting edges. See Figure 23.
Sharpen the cutting edge straight across, parallel to
the trailing edge, at a 25° to 30° angle. See Figure
23.

reason, disconnect the NEGATIVE (Black) wire from
it’s terminal first, followed by the POSITIVE (Red)
wire. When re-installing the battery, always connect
the NEGATIVE (Black) wire its terminal first, followed
by the POSITIVE (Red) wire. Be certain that the
wires are connected to the correct terminals.
reversing them could change the polarity and cause
damage to your engine’s alternating system.

IMPORTANT: If the cutting edge of the blade has
already been sharpened to within 5/8" of the wind
wing radius, or if any metal separation is present,
replace the blades with new ones. See Figure 23.

Charging
If the unit has not been put into use for an extended
period of time, charge the battery with an
automotive-type 12-volt charger for a minimum of
one hour at six amps.

WARNING: Batteries give off an
explosive gas during and for some time
after charging. Charge battery in a well
ventilated area and do not allow a spark or
an open flame near the battery.

Worn Blade Edge
Blade Separation

Sharpen Edge Evenly

Wind Wing

FUSE

5/8 "
m in im
um

A fuse is installed in your tractor’s wiring harness to
protect the tractor’s electrical system from damage
caused by excessive amperage. Always use the
same capacity fuse for replacement. If the electrical
system does not function, or your tractor’s engine
will not crank, first check to be certain that the fuse
has not blown. It can be found under the hood
mounted behind the top of dash panel on the
support bar. Pull the fuse out and compare it with
Figure 24 to determine if it is good or bad.

Figure 23
It is extremely important that each cutting blade
edge be ground equally to maintain proper blade
balance. An unbalanced blade will cause excessive
vibration when rotating at high speeds, may cause
damage to the tractor and result in personal injury.
The blade can be tested by balancing it on a round
shaft screwdriver. Grind metal from the heavy side
until it balances evenly.

When replacing the blade, be sure to install the
blade with the side of the blade marked ‘‘Bottom’’ (or
with a part number stamped in it) facing the ground
when the mower is in the operating position.

GOOD

BAD
Figure 24

TIRES
The recommended operating tire pressure is
approximately 10 psi for the rear tires and 14 psi for
the front tires. Refer to the tire sidewall for exact tire

manufacturer’s
recommended
psi.
Do
not
overinflate. Uneven tire pressure could cause the
cutting deck to mow unevenly.

SECTION 11: LUBRICATION
WARNING: Always stop the engine and disconnect the spark plug wire(s) and ground against the
engine before performing any maintenance.

ENGINE
Lubricate the engine with motor oil as instructed in the separate engine manual packed with your unit.

PIVOT POINTS
Lubricate all pivot points (AutoDrive pedal, brake pedal, etc.) at least once a season with light oil.
™

LINKAGE
Lubricate all the pivot points on the drive, brake and lift linkage at least once a season with SAE 30 engine oil.

STEERING GEAR
Lubricate the teeth of the steering gear with an all-purpose automotive grease every 25 hours of operation or
once a season.

WHEELS
Both the front wheels and the rear wheels should be removed from the axles once a season. Lubricate the
axles and the rims well with an all-purpose automotive grease before re-installing them.

FRONT AXLES
Your tractor may be equipped with zerk fittings on the ends of the front pivot bar. See Figure 9. Lubricate both
the left and the right front axles with a grease gun at least once a season.

SECTION 12: TROUBLESHOOTING GUIDE
Trouble

Possible
Cause(s)

Corrective Action

There are two safety switches in the starting circuit of your unit: the brake pedal switch
and the PTO switch. Make certain the actuator is fully depressing the buttons on each
switch. The Operator must be seated on the tractor in order to start the engine, also.
The battery must be installed with negative terminal attached to black ground wire.
Negative terminal is identified at the post by “NEG”, “N” or “-”. The positive terminal,
identified by “POS”, “P” or “+”, must be attached to the thick red wire which goes to the
solenoid.
Battery is dead Charge at six amps with a 12-volt automotive-type battery charger for one hour or until
fully charged.
or weak.
Refer to operator’s manual for fuse location. Replace fuse with automotive type fuse of
Blown fuse
the proper amperage. Fuses seldom fail without a reason. The problem must be
corrected. Check for loose connections in the fuse holder. Replace fuse holder if necessary. A dead short may be in the cranking or charging circuit where the insulation
may have rubbed through and exposed the bare wire. Replace the wire or repair with
electrician's tape if the wire strands have not been damaged.
Note: Look for a wire pinched between body panels, burned by the exhaust pipe or
muffler or rubbed against a moving part.
Throttle or choke Refer to the OPERATION section of this manual for the correct position of the throttle
Engine
control and choke for starting..
cranks but not in starting
will not start position.
No fuel to the
Gasoline tank empty. Fill.
carburetor.
Fuel line or in-line fuel filter plugged. Remove and clean fuel line. Replace fuel filter
(if so equipped) if necessary.
Spark plug lead disconnected. Connect lead. Using a spark tester, check for spark. If
No spark to
no spark is present, have engine’s magneto serviced by an authorized engine dealer.
spark plug(s).
Engine will Safety switch
not crank
button not
depressed.
Battery installed
incorrectly.

Dirty aircleaner.
Engine
smokes

If the air cleaner is dirty, the engine may not start. Refer to the engine manual packed
with your unit.
Check oil level.

Excessive
vibration

Engine oil has
been overfilled.
Engine loses
crankcase
vacuum.
Bent blade or
damaged pulley.

Mower
won’t
discharge
grass or
leaves
uncut strips

Engine speed
low.
Speed selection. Use lower ground speed. The slower your ground speed, the better the quality of cut.
Raise deck.
Cutting height
set too low.
Blades dull.
Sharpen or replace blades (uncut strip problem only).

Dipstick not seated or broken. Replace defective part.
Engine breather defective. Replace.
Stop engine immediately. Check all pulleys, blade adapters, keys and bolts for
tightness and spindle damage. Tighten or replace any loose or damaged parts.
Always replace damaged blade. Only use original equipment blades.
Throttle must be set at full throttle.

Model 604
1
8
10

9
11

5
13
4

6
5
13
5
7
7

REF.
PART
NO.
NO.
1 625-0051
725-1739
725-1649
2 629-0913
3 629-0924
4 710-0599
5 712-3006
6 725-1426
7 725-1657A
8 725-1741
9 725-1743
10 725-1745
11 725-1747
12 736-0222
13 736-0329

DESCRIPTION
Bulb/Socket Headlight Assembly
Bulb Only
Socket Only
Wiring Harness
Harness Adapter (for Kohler engines)
Self Tapping Screw, 1/4-20 x .5
Hex Nut, 1/4-20
Solenoid, 12-volt, 100 Amp
Snap Mount Safety Interlock Switch
Ignition Switch
Indicator Monitor / Hour Meter
Ignition Key
Safety Plunger Switch
External Lock Washer, 1/4
Lock Washer, 1/4

Electrical System/Tractor Body
13
28

24
23

21
30

2
1

4
10

2
22
14

26
22

20
4

31
22

34
6
22

15
8

19
9
18

6
22

REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

PART
NO.
710-0788
710-0599
710-0751
710-0895
710-0924
710-3008
712-0292
712-3004A
712-3027
725-1649
731-1978
731-1979
731-2238
731-2237
731-2236
731-1995
731-1996
736-0173
736-3078
747-1132

REF.
NO.
21
22
23
24
25
26
27
28
29
30
31
32

DESCRIPTION
Self Tapping Screw, 1/4-20 x 1.0
Self Tapping Screw, 1/4-20 x .5
Hex Cap Screw, 1/4-20 x .62
Self Tapping Screw, 1/4-15 x .75
Pan Phillips Screw, 1/4-20 x .75
Hex Cap Screw, 5/16-18 x .75
U-type Speed Nut, 1/4-20
Flange Lock Nut, 5/16-18
Hex Flange Lock Nut, 1/4-20
Head Lamp Socket
RH Head Light Lens
LH Head Light Lens
Hood, 4-style (Red)
LH Side Panel, 4-style (Red)
RH Side Panel, 4-style (Red)
LH Head Light Reflector
RH Head Light Reflector
Flat Washer, .28 x .74 x .063
Flat Washer, .349 x 1.0 x .063
Hood Support Rod

33
34
35
36

PART
NO.
783-0808
710-0604
710-1017
710-3217
712-0142
731-0069
731-0072
731-1857
731-2106
747-1155
749-1087
731-2232
731-2234
751-0603
751-0659
751-0658
725-1745
746-1084
746-1085
746-1088

DESCRIPTION
Heat Shield, 4-style
Self Tapping Screw, 5/16-18 x .625
Torx Self Tapping Screw, 1/4-14 x .625
Torx Screw, #8-32 x .375
Hex Nut, 8-32
Dash Panel (Manual PTO), 4-style
Parking Brake Button
Throttle Control Lever
Cruise Control Button
Brake/Cruise Pivot Rod
Dash Support Tube
Intake Bellow (Intek Single)
Intake Bellow (Intek Twin)
Fuel Cap
Fuel Tank (Two Gallon, Shown)
Fuel Tank (Three Gallon)
Ignition Key
Choke/Throttle Cable (Intek Single)
Choke Cable (Intek Twin)
Choke Cable (Kohler)

Model 604
49

43
42

39
46

45
41
37
48
44
30

6
45
36
47
16
38
28
35
32

34
27

33
29

6
14
2
13
9

8
14
18

5
19

8
12

17
21
22
10
20

25
19

21
22
24
6
14
8

3
16

4
5
4
15

16
9
7

Lift Assembly
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

PART
NO.
647-0040
683-0197
711-0332
712-0206
712-0431
712-3004A
712-3083
714-0104
714-0111
716-0106
720-0311
732-0874
732-0934
736-0275
736-0921
736-3019
736-3084
738-0138
738-0380
741-0225
741-0715
746-0968
747-1111
756-1154
783-0678
783-0720

DESCRIPTION
Deck Stabilizer Rod
Lift Shaft Assembly
Clevis Pin, .5 x .78
Hex Nut, 1/2-13
Flange Lock Nut, 3/8-16
Flange Lock Nut, 5/16-18
Hex Nut, 1/2-13
Internal Cotter Pin
Cotter Pin
E-ring
Handle Grip
Torsion Spring
Lift-assist Spring, 1.15 x 5.99
(Found on Units w/ 46-inch Decks Only)
Flat Washer, 5/16
Lock Washer, 1/2
Flat Washer, .31 x 1.062 x .134
Flat Washer, .51 x 1.12 x .06
Hex Cap Screw, 5/16-18 x .62
Shoulder Screw, .5 x .27, 3/8-16
Hex Flange Bearing
Snap Flange Bearing
Lift Cable, 16.16
Lift Handle
Roller Pulley
Arm Lift
Deck Stabilizer Bracket

REF.
NO.
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

PART
NO.
710-0260
710-0604
710-0895
731-1990
731-2104
738-0155
783-0677
783-0685
783-0715
710-1268
712-3027
720-0309A
731-1989
732-0499
736-0175
736-0204
738-0137A
738-1007
783-0611
783-0738
783-0739
783-0753
757-0348A
735-0657
735-0656
726-3046

NOTE: For painted parts, please refer to
the list of color codes below. Please add
the applicable color code, wherever
needed, to the part number to order a
replacement part. For instance, if a part
numbered 700-xxxx is painted Powder
Black, the part number to order would be
700-xxxx-0637.
MTD Red: 0638
Oyster Gray: 0662
Powder Black: 0637

DESCRIPTION
Carriage Bolt, 5/16-18 x .62
Self Tapping Screw, 5/16-18 x .625
Self Tapping Screw, 1/4-15 x .75
Lift Lever Cover
Shift Lever Cover w/ Cup Holder
Shoulder Screw, .437 x 1.62
Lift Adjustment Bracket
Fender
Seat Mounting Bracket
Screw, #10-16 x .375
Hex Flange Lock Nut, 1/4-20
Seat Adjuster Grip
Spacer
Compression Spring, .41 x 1.5
Spring Washer, .265 x .562 x .025
Flat Washer, .344 x .62 x .03
Shoulder Screw, .340 x .285,1/4-20
Shoulder Screw, .50 x .50, 3/8-16
Seat Stop
Seat Pivot Bracket
Seat Adjustment lever
Seat Adjustment Selector
Seat, Black w/ Drain Holes
LH Foot Pad
RH Foot Pad
Foot Pad Clips (Not Shown)

Model 604

24
43
42
23

6
38
21
14
20
2

20
13

22
11

18
15

13
12
8
30

13
42
41

5
28

32
10
17
29

33
31

27
39
34

36
29

9
16

Steering Assembly
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

PART
NO.
683-0263
710-0604
783-0726
783-0727
783-0728
710-0514
711-1291
711-1292
712-0240
712-0241
712-0431
712-0459
712-3004A
717-1550
717-1554
723-0448A
736-0169
736-3084
738-1001
741-0475
741-0656
748-0416
631-0027
731-0220
638-0019
638-0021
638-0020
638-0022

DESCRIPTION
Lower Frame Assembly
Self-tapping Screw, 16-18 x .625
RH Pivot Support Bracket
LH Pivot Support Bracket
Pivot Bar Bracket
Hex Cap Screw, 3/8-16 x 1 (Grade 5)
LH Drag Link
RH Drag Link
Jam Nut, 7/16-20 (Grade 2)
Hex Nut, 3/8-24 (Grade 2)
Flange Lock Nut, 3/8-16
Flange Lock Nut, 7/16-20
Flange Lock Nut, 5/16-18
Steering Gear, 11/90 Ratio
Steering Pinion Gear
Ball Joint, 7/16-20
Lock Washer, 3/8
Flat Washer, .51 x 1.12 x .06
Steering Shaft, .625 OD x 24.4
Plastic Bushing, .38 ID
Hex Flange Bearing, 5/8
Shoulder Spacer, .38 ID
Steering Wheel
Steering Wheel Cap
LH Axle Assembly, .625 Diameter
LH Axle Assembly, .625 / .750 Diameter
RH Axle Assembly, .625 Diameter
RH Axle Assembly, .625 / .750 Diameter

REF.
NO.
27
28
29
30
31
32
33
34
35
36

37
38
39
40
41
42
43

PART
NO.
683-0128A
712-0431
714-0470
726-0214
726-0341
736-0162
736-0187
736-0316
736-0285
738-1011
741-0659
741-0660
634-0105A
634-0172
734-0255
734-1731
741-0487A
741-0706
734-0484A
783-0653
738-1020
736-0331
738-0140
736-0242
710-0643

DESCRIPTION
Pivot Bar
Flange Lock Nut, 3/8-16
Cotter Pin
Push Cap, 5/8
Push Cap, 3/4
Flat Washer, .64 x 1.0 x .12
Flat Washer, .64 x 1.24 x .06
Flat Washer, .78 x 1.59 x .06
Flat Washer, .635 x 1.589 x .06
Shoulder Screw, .5 x 2.2, 3/8-16
Flange Bearing, .632 ID x .937 OD
Flange Bearing, .760 ID x .937 OD
Wheel Assembly Complete, 15 x 6 x 6
Rim Only
Air Valve (Not Shown)
Tire Only, Square Shoulder
Plastic Flange (Not Shown)
Plastic Flange w/ Fitting (Not Shown)
Hub Cap
Steering Support Bracket
Shoulder Screw, .625 x .50, 7/16-20
Bell Washer, .39 x 1.13 x .062
Shoulder Screw, .435 x .178, 5/16 x .56
Bell Washer, .34 x .872
Hex Bolt, 5/16-18 X 1

Model 604
4
22
13

5
1

12
21

13
19

78
13

61
11
18
36

25
41

57
19

23
58

31
7

13
47

69
62
8

30
3
32
20

31 21

68
52

43
13

80
12

47
34
15
17
49
10
39

66
59

19
33
23

76
12

26
27
24
42

33
75

58
63

50
19
19

54
46

56
71

Drive System
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43

PART
NO.
17839
17840
618-0386
631-0009
647-0041
656-0048
656-0051
683-0251
710-0189
710-0227
710-0347
710-0599
710-0604
710-0642
710-3011
711-0677
712-0241
712-0378
712-0431
712-0798
712-3004A
712-3008
714-0111
714-0149B
723-0156
725-1644
726-0320
732-0384
732-0525
732-0716
732-0963
736-0105
736-0140
736-0169
736-0275
736-0407
736-3010
738-0322
747-1122
747-1123
747-1127
747-1156
747-1160

REF.
NO.
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82

DESCRIPTION
Shift Lever Bracket
Transaxle Mounting Bracket
Single-speed Transmission Assembly
Shifter Knob
Shift Lever
Variable-speed Pulley Assembly
Transmission Pulley, 8.5 x .5-36
Double-idler Bracket
Hex Cap Screw, 5/16-18 x 3
Self Tapping Screw, #8-18 x .5
Hex Cap Screw, 3/8-16 x 1.75
Self Tapping Screw, 1/4-20 x .5
Self Tapping Screw, 5/16-18 x .625
Self Tapping Screw, 1/4-20 x .75
Hex Cap Screw, 3/8-16 x 2.25
Ferrule, 5/16-18
Hex Nut, 3/8-24
Hex Nut, 7/16-20
Flange Lock Nut, 3/8-16
Hex Nut, 3/8-16
Flange Lock Nut, 5/16-18
Jam Nut, 3/8-16
Cotter Pin
Internal Cotter Pin
Ball Joint, 3/8-24
Short Spring Switch
Insulator Nut Plate
Extension Spring, .62 Dia. x 6.12
Compression Spring Clip
Extension Spring, .59 OD x 4
Extension Spring, .50 Dia. x 6.37
(hooks to flange, 783-0650, in frame)
Bell Washer, .401 x .87 x .063
Flat Washer, .385 x .62 x .063
Lock Washer, 3/8
Flat Washer, 5/16
Bell Washer, .45 x 1.0 x .602
Flat Washer, .407 x .812 x .135
Shoulder Screw, .625 x .217
Brake Rod
Belt Guard
Idler Adjustment Rod, 3/8
Shift Rod
Belt Guard Rod

PART
NO.
748-0416
754-0467
754-0468
756-0981
783-0637
783-0667
783-0669
783-0714
647-0031
647-0032
683-0266
710-1135
711-0736
711-1363
714-0104
732-0437
732-0955
735-0662
735-3049
736-0140
736-0187
736-0204
738-0155
738-0507B
741-0225
741-3065A
747-1137
747-1138
748-0413
748-0415
783-0653
783-0732
783-0773
783-0780
683-0263
783-0668
736-0242
710-0627
634-0177
634-0104
634-0077
734-0255
734-1873
734-1730

DESCRIPTION
Shoulder Spacer, .38 ID
Variable-speed Belt
Drive Belt
Flat Idler, 2.75 OD
Shift Lever Support
Transmission Torque Bracket
Idler Bracket
Adjustable Shift Bracket
Brake Control Assembly
Speed Control Assembly
AutoDrive™ Pedal Assembly
Self Tapping Screw, 5/16-18 x 2.5
Ferrule, 1/4-20
Pin, 3/8-16 x 2.43
Cotter Pin
Compression Spring, .34 OD x 1.0
Extension Spring, .50 OD x 1.41
AutoDrive™ Pedal Pad
Brake Pedal Pad
Flat Washer, .281 x .5 x .0625
Flat Washer, .64 x 1.24 x .06
Flat Washer, .344 x .062 x .03
Shoulder Screw, .437 x 1.62
Shoulder Screw, .5 x .434
Hex Flange Bearing
Split Hex Flange Bearing
Cruise Control Rod
Brake Lock Control Rod
Cruise Latch
Spacer, 5/16 x 1.54
Stearing Support Bracket
AutoDrive™ Lockout Bracket
Brake Pedal
Neutral Return Bracket
Lower Frame Assembly
Hitch Plate
Bell Washer, .34 x .872
Hex Cap Screw, 5/16-24 x .75
Wheel Assembly Complete, 20 x 10 x 8
Wheel Assembly Complete, 20 x 8 x 8
Rim Only
Air Valve (Not Shown)
Tire Only, 20 x 10 x 8, Square Shoulder
Tire Only, 20 x 8 x 8, Square Shoulder

Model 604
10
47
52
48

46
49

51
55

5
57
56

54
53
38
58

11
26

63
62
61

31
63

5
15
45
6
59

5
12
8
18
10

14
9
20
34
23
10

32
13

5
36

28
10

33
1
17
13

41
43

30
44

38
39

37
40

Power Take-off System
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

PART
NO.
683-0278
683-0282
710-0514
710-0597
710-0604
710-1260A
710-3011
710-3180
710-3199
712-0431
712-3004A
712-3010
712-3027
714-0111
725-1657A
731-2111
732-0977
732-0978
736-0140
736-0176
736-0272
738-1021
738-1125
741-0708
747-1112
747-1114
747-1174
748-0416
748-0421
756-0627
783-0744
783-0796

DESCRIPTION
PTO Engagement Link w/ Weld Pin
PTO Actuator Bracket w/ Weld Nut
Hex Cap Screw, 3/8-16 x 1.0 (Grade 5)
Hex Cap Screw, 1/4-20 x 1.0 (Grade 5)
Self Tapping Screw, 5/16-18 x .625
Self Tapping Screw, 5/16-18 x .75
Hex Cap Screw, 3/8-16 x 2.25 (Grade 5)
Hex Cap Screw, 5/16-18 x 1.75 (Grade 5)
Hex Cap Screw, 1/4-20 x 1.5 (Grade 5)
Flange Lock Nut, 3/8-16
Flange Lock Nut, 5/16-18
Hex Nut, 5/16-18
Hex Flange Lock Nut, 1/4-20
Cotter Pin
Snap Mount Safety Interlock Switch
PTO Knob
Extension Spring, .62 OD x 2.16
Extension Spring, 1.2 OD x 3.638
Flat Washer, .385 x .62 x .063
Flat Washer, .25 x .93 x .12
Flat Washer, .51 x 1.0 x .60
Shoulder Screw, .5 x .27, 3/8-16
Shoulder Nut, 1/4-20
Hex Split Flange Bearing, .50 ID
PTO Engagement Handle
PTO Engagement Lever
PTO Actuator Adjuster Link
Shoulder Spacer, .38 ID
Arm Spacer, .68
Flat Idler Pulley, 3.5 OD
Stop Bracket
PTO Actuator Bracket

REF.
NO.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63

PART
NO.
783-0797
783-0798
783-0799
783-0806
710-0561
710-0599
736-0171
736-0322
750-0956
756-1158
756-1164
754-0472
754-0476
683-0263
723-0444
732-0755
732-0956
738-1014
783-0349
783-0668
783-0733
725-1426
736-0222
725-1747
738-1020
736-0407
712-0459
783-0653
725-1706
712-3044
712-0271
710-0751

DESCRIPTION
PTO Engagement Arm
PTO Engagement Link
PTO Arm
Deck Stop
Hex Cap Screw, 7/16-20 x 2.5 (Grade 5)
Self Tapping Screw, 1/4-20 x .5
Lock Washer, 7/16
Flat Washer, .45 x 1.25 x .164
Spacer, 1.01 x 1.4 x .825
Engine Pulley, 5.56 Dia. x 3.56 Dia.
Pulley Sheave
PTO Belt (42-inch Decks)
PTO Belt (46-inch Decks)
Lower Frame Assembly
Battery Strap
Compression Spring, .1.314 OD x 2.35
Compression Spring, .66 OD x 1.5
Shoulder Screw, .5 x 1.25, 3/8-16
Battery Tray
Hitch Plate
Spacer Cup, 1.5 OD
Solenoid, 12-Volt, 100 Amp
Lock Washer, 1/4
Safety Interlock Plunger Switch
Shoulder Screw, .625 x .5, 7/16-20
Bell Washer, .45 x 1.0 x .062
Flange Lock Nut, 7/16-20
Steering Support Bracket
12-volt Battery, 270 CCA
Wing Nut, 1/4-20
Hex Sems Nut, 1/4-20
Hex Cap Screw, 1/4-20 x .62

Model 604

38
10

46-inch Deck

14
16
24
26
28
35
7

34
10

27
21
32

3
20

29
25
26

15
18

52
53
19
1
29

55
25

30
30

17
43
47
32

42-inch Deck

9
27
21
23

57
19

29
25
26

4
23
48

52
53

32
44

54
25

45
11

13
49
17

40
17

Cutting Decks
REF.
PART
NO.
NO.
1 17982
2 618-0240
756-0959
3 618-0241
756-0603
4 683-0254
5 683-0265
6 710-0167
7 710-0347
8 710-0514
9 710-0528
10 710-0599
11 710-0650
12 710-0751
13 710-1260A
14 712-3288
15 712-0241
16 712-0291
17 712-0417A
18 712-0431
19 712-3027
20 714-0104
21 717-1553
22 731-1032A
23 732-0306
24 732-0594A
25 734-0973
26 736-0105
27 736-0119
28 738-0347
29 738-0373

REF.
NO.
30
31
32
33
34
35
36
37
38
39
40
41

DESCRIPTION
Reinforcement Spindle Plate
Spindle Assembly, 5 Dia.
Pulley Only
Double Pulley Spindle Assembly
Double Pulley Only
Deck Adjustment Bracket w/ Weld Nut
46-inch Deck Shell
Carriage Screw, 1/4-20 x .5
Hex Cap Screw, 3/8-16 x 1.75
Hex Cap Screw, 3/8-16 x 1.0
Hex Cap Screw, 5/16-18 x 1.25
Self Tapping Screw,1/4-20 x .5
Self Tapping Screw, 5/16-18 x .875
Hex Cap Screw, 1/4-20 x .62
Self Tapping Screw, 5/16-18 x .75
Hex Cap Screw, 1/4-20 x 1.62
Hex Nut, 3/8-24
Center Lock Nut, 1/4-20
Hex Flange Nut, 5/8-18
Flange Lock Nut, 3/8-16
Hex Flange Lock Nut, 1/4-20
Internal Cotter Pin, .072 x 1.12
Deck Adjustment Gear
Side Discharge Chute Assembly
Compression Spring, .406 x .531 x 1.75
Extension Spring, .91 x 7.33
Deck Wheel, 5 x 1.38
Bell Washer, .401 x .87 x .063
Lock Washer, 5/16
Shoulder Spacer, .625 x .169
Shoulder Spacer, .498 x 1.53

42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

PART
NO.
742-0611
742-0612
747-1116
754-0349
756-0627
783-0139
783-0141
783-0142
783-0747
783-0805
16606
618-0324
756-1151
683-0198
710-0604
712-0181
712-0271
712-3006
731-2231
736-0270
742-0616
731-1636
731-1643A
712-3087
712-0291
710-0106
710-0578
753-0852

753-0851

DESCRIPTION
Three-in-one Blade, Star Center, 16.28
Three-in-one Blade, Star Center, 14.88
Deck Release Pin
Deck Belt
Flat Idler Pulley, 3.5 OD
Idler Bracket
Center Deck Skirt
RH Deck Skirt
LH Belt Cover
RH Belt Cover
Retainer Hook
Spindle Assembly, 5.75 Dia
Pulley Only
42-inch Deck Shell
Self Tapping Screw, 5/16-18 x .625
Top Lock Jam Nut, 3/8-16
Hex Sems Nut, 1/4-20
Hex Nut, 1/4-20
Belt Cover
Bell Washer, .265 x .75 x .062
Three-in-one Blade, Star Center, 21.23
Mulch Plug, 46-inch Decks
Mulch Plug, 42-inch Decks
Wing Nut, 1/4-20
Center Lock Nut, 1/4-20
Hex Cap Screw, 1/4-20 x 1.25
Screw, 1/4-20 x 1.5
46-inch Deck Assembly Complete
(w/o mulch kit)
42-inch Deck Assembly Complete
(w/o mulch kit)

Model 604
11
(for choke)
7

13
9

Briggs & Stratton
Intek Twin

3
35
4
12

(for throttle)

10
5

8
10
5

10
5

(deflector must
face forward)

15
11
(for choke)
7

13
9

Kohler
Single-cylinder

20
3

2
21

21
25
26

24
27

28
14
1

(deflector must
face forward)

Engine Accessories
34

9
13

Briggs & Stratton
Intek Single

4
31
32

18
2
21

6
33

14
28

REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

PART
NO.
710-0148
710-0599
710-0604
710-1237
710-1314
710-1315
712-0798
721-0460
726-0205
736-0119
736-0221
751B221535
751-0535
751-0564
751-0616
751-0650
751-0651
751-3140

REF.
NO.
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

DESCRIPTION
Self Tapping Screw, #8-32 x .375
Self Tapping Screw, 1/4-20 x .5
Self Tapping Screw, 5/16-18 x .625
Screw, #10-32 x .625
Socket Cap Screw, 5/16-18 x .625
Self Tapping Screw, 3/8-16 x 1.25
Hex Nut, 3/8-16
Exhaust Gasket (Intek Twin)
Hose Clamp
Lock Washer, 5/16
Flat Washer, 3/8 x .56 x .018
Casing Clamp
Fuel Line Hose
Muffler Deflector
Muffler, Twin Inlet
RH Exhaust Pipe (Intek Twin)
LH Exhaust Pipe (Intek Twin)
Oil Drain Valve

PART
NO.
751-3141
751-3142
783-0615
783-0625A
710-3206A
712-3086
721-0375
736-0607
751-0621
751-0617
712-0271
721-0208
732-0966
751B213146
751-0619
746-1084
746-1086
746-1087

(deflector must
face forward)

DESCRIPTION
Oil Drain Hose
Oil Drain Cap
Muffler Heat Shield
Engine Heat Shield
Hex Cap Screw, M8-1.25 x 25
Flange Nut, M8-1.25
Exhaust Gasket (Kohler)
External Lock Washer, 5/16
Exhaust Pipe (Kohler)
Muffler, Single Inlet
Hex Sems Nut, 1/4-20 (for starter cable)
Exhaust Gasket (Intek Single)
Extension Spring, .275 x 1.25
Casing Clamp
Exhaust Pipe (Intek Single)
Throttle/Choke Cable (Intek Single)
Throttle Cable (Intek Twin)
Throttle Cable (Kohler)

MANUFACTURER’S LIMITED WARRANTY FOR:

For TWO YEARS from the date of retail purchase
within the United States of America, its possessions
and territories, MTD PRODUCTS INC will, at its
option, repair or replace, for the original purchaser,
free of charge, any part or parts found to be
defective in material or workmanship. This warranty
covers units which have been operated and
maintained in accordance with the operating
instructions furnished with the unit, and which have
not been subject to misuse, abuse, commercial use,
neglect, accident, improper maintenance or
alteration.

Units exported out of the United States: MTD
PRODUCTS INC does not extend any warranty for
products sold or exported outside of the United
States of America, its possessions and territories,
except those sold through MTD PRODUCTS INC’s
authorized channels of export distribution.

Normal wear parts or components thereof are
subject to separate terms as noted below in the “No
Fault Ninety Day Consumer Warranty” clause.

2. *Batteries are covered by a 90-day replacement
warranty.

All normal wear part failures will be covered on this
product for a period of 90 days regardless of cause.
After 90 days, but within the two year period, normal
wear parts failures will be covered ONLY IF caused
by defects in material or workmanship of OTHER
component parts. Normal wear parts are defined as
batteries*, belts, blades, blade adapters, grass bags,
rider deck wheels, seats, snow thrower skid shoes,
shave plates and tires.
How to obtain service: Warranty service is
available, with proof of purchase, through your local
authorized service dealer. To locate the dealer in
your area, please check the yellow pages or contact
the Customer Support Department of MTD
PRODUCTS INC, P. O. Box 368022, Cleveland,
Ohio 44136-9722.
Phone 1 (330) 273-4683. The return of a complete
unit will not be accepted by the factory unless prior
written permission has been extended by the
Customer Support Department of MTD PRODUCTS
INC.
Transportation charges: Transportation charges
for the movement of any power equipment unit or
attachment are the responsibility of the purchaser.

Other Warranties:
1. The engine or component parts thereof carry
separate warranties from their manufacturers.
Please refer to the applicable manufacturer’s
warranty on these items.

3. Log splitter pumps, valves and cylinders or
component parts thereof are covered by a one
year warranty.
4. All other warranties, express or implied,
including any implied warranty of merchantability
or fitness for a particular purpose, are hereby
expressly disclaimed in their entirety.
5. The provisions as set forth in this warranty
provide the sole and exclusive remedy of MTD
PRODUCTS INC’s obligations arising from the
sales of its products. MTD PRODUCTS INC will
not be liable for incidental or consequential loss
or damage.
How state law relates to this warranty: This
limited warranty gives you specific legal rights, and
you may also have other rights which vary from state
to state. Certain disclaimers are not allowed in some
states and therefore they may not apply to you
under all circumstances.
NOTE: This warranty does not cover routine
maintenance items such as lubricants, filters, blade
sharpening and tune-ups, or adjustments such as
brake adjustments, clutch adjustments or deck
adjustments. Nor does this warranty cover normal
deterioration of the exterior finish due to use or
exposure.

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 40
Create Date                     : 1998:12:30 11:15:22
Producer                        : Acrobat Distiller 3.01 for Windows
Author                          : Mac #3, Herald Printing Co.
Creator                         : PSCRIPT.DRV Version 4.0
Title                           : 770-10187.fm

EXIF Metadata provided by EXIF.tools

Troy Bilt Autodrive 604 Users Manual 770 10187

604 to the manual 104a8bd9-c7de-49d1-8392-57ee2211f4ff

Troybilt 604 Garden Tractor

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