Briggs & Stratton 407777-0128 Owner’s Manual

YaRD'MaN

OPERATOR'S MANUAL

AutoDrive TM 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 forest-

covered, 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 thoperefor.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states mphave
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine ald_orizod

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. 770-10079

(12/98)

SECTION 1: TABLE OF CONTENTS

PAGE

FtNDINGYOUR MODEL NUMBER ....................................................... 2

CALLINGCUSTOMER SUPPORT ........................................................ 2

IMPORTANT SAFE OPERATION PRACTICES.............................................. 3

SAFETYLABLES FOUND ON YOUR UNIT................................................. 5

SLOPEGAUGE ...................................................................... 6

ATTACHMENTS& ACCESSORIES ....................................................... 7

TRACTOR SET-UP.................................................................... 7

CONTROLS ......................................................................... 8

OPERATION........................................................................ t 1

ADJUSTMENTS ..................................................................... 14

MAINTENANCE ..................................................................... 17

LUBRICATION ...................................................................... 24

TROUBLESHOOTING GUIDE .......................................................... 25

PARTS LIST ........................................................................ 27

WARRANY INFORMATION ..................................................... BackCover

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 itsays.
Before you start to prepare your tractor for its first use, please locate the model plate and copy the information
from itin 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 lookingat the seat bracket.

• An example of what the model plate will look like is shown below.

p_

I

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:

_f

P.O. BOX 368022

b_

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 serialnumber 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 couldresultin serious injuryor 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

pads.

• Only allow responsible individuals familiar with the

instructions to operate the machine. Know controls
and how to stop the machine quickly.

• Do not put hands or feet under cutting deck or near

rotating parts.

• 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 dudng
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.

• Be sure the area is clear of other people before

mowing. Stop machine if anyone enters the area.

• Never carry passengers.

• 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.

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

speed.

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.
Turn off blade(s) when not mowing.

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.

Mow only in daylight or good artificial light.
Do not operate the machine while under the

influence of alcohol or drags.
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.

Wear sturdy, rough-soled work shoes and close-
fitting slacks and shirts. Do not wear loose fitting

clothes or jewelry. They can be caught in moving
pads. Never operate a unit in bare feet, sandals, or
sneakers.

Check overhead clearance carefully before driving

under power lines, wires, bddges or low hanging
tree branches, before entedng 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.

3

• Disengage all attachment clutches, thoroughly

depress the brake pedal, and shift into neutral

before attempting to start engine.

• 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.

2. SLOPE OPERATION

Slopes are a major factor related to loss of control and tip-
over 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.

DO:

• 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.

• Use slow speed. Always keep machine in gear

when going down slopes to take advantage of
engine braking action.

• Follow the manufacturer's recommendations for
wheel weights or counterweights to improve

stability.

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

machine.

• 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.

• Avoid starting or stopping on a slope. If tires lose

traction, disengage the blade(s) and proceed slowly

straight down the slope.

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.

• Do not mow on wet grass. Reduced traction could

cause sliding.

• Do not try to stabilize the machine by putting your

foot on the ground.

• Do not use grass catcher on steep slopes.

3. 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 chil-
dren will remain where you last saw them.

• Keep children out of the mowing area and in
watchfulcare ofan adult otherthan the operator.

• Be alert and turn machine off if children enter the

area.

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

• 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.

• Use extra care when approaching blind corners,

shrubs, trees or other objects that may obscure
your vision of a child or other hazard.

4. SERVICE

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

vapors are explosive.

• Use only an approved container.

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

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

• 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.

• 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.

• 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.

• 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 odginal equipment specifications.

• 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.

• 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.

• 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.

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

• 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.

Do not change the engine governor settings or
overspeed the engine. Excessive engine speeds
aredangerous.

Observe proper disposal laws and regulations.
Improper disposal of fluids and materials can harm

the environment and the ecology.

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.

Use proper containers when draining fluids. Do not
use food or beverage containers that may mislead
someone into ddnking from them. Propedy dispose

of the containers immediately following the draining
of fluids.

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.

,_ WARNING - YOUR RESPONSIBILITY: Restrict the use of this power machine to persons

who read, understand and follow the warnings and instructionsinthis manual and on the machine.

DANGER

Figure 1 Safety Labels found on your unit

USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY.

O

O

m

14

I

SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE

A POWER POLE

I

I

|

I

I

I

A CORNER OF A BUILDING

OR A FENCE POST

I
I

(JD

,_ 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 overturnand cause serious injury. If operating a walk-behind mower on such a slope, it is extremely difficultto mainta in
your footing andyou 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-190-60t
0EM-190-602

OEM-190-112

0EM-190-118
OEM-190-603
OEM-190-604
OEM-190-822

0EM-190-823

FastAttach- Twin Bagger Grass Collector (For 42-inch Decks Only)
Fast.Attach-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
NOTE: The positive battery terminal is marked

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

• 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.

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

! Rubber --

Boot

DESCRIPTION

GAS AND OIL FILL-UP

Service the engine with gasoline and oil as

instructed in the separate engine manual packed
with your tractor. Read instructions carefully.

IMPORTANT: Your tractor is shipped with oil;

however, you MUST check the oillevel before operat-

ing. 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 gasoline tank is located under the hood and has
a capacity of approximately two gallons. Do not

overfill.

fumes. Never fill fuel tank indoors. Always

WARNING: Gasoline produces noxious

fill the fuel tank in a well ventilated area to
avoid inhalation of gasoline fumes.

_ Battery

Terminal Bolt

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.

your tractor or fill the fuel tank while engine

WARNING: Never smoke while fueling

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.

INSTALLING THE MULCH KIT

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.

7

SECTION 7: CONTROLS

D

B

I

C

M

\

F

A

G

J

E

K

L

-- NOTE: Steering Wheel not shown for clarity.

Figure 3

A IgnitionSwitch

B Throttle Control Lever

C Choke Control (if so equipped)

D Indicator Monitor/Hour Meter
E Lift Lever
F PTO (Power Take-Oft) Lever

G AutoDrive- Pedal

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

H Brake Pedal
I Parking Brake Button

J ShiftLever
K Seat Adjustment Lever

L Cup Holder

M Cruise Control Button

8

IGNITION SWITCH

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 manualfor detailed instructions

tractor when the tractor is not in use to

WARNING: Remove the key from the

prevent accidental starting.

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.

CHOKECONTROL

On some units, moving the
throttle lever all the way
forward activates the engine's

choke control. On all other
units, the choke controlcan 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.

_ n/Lights

Start

Figure 4

THRO'I-rLE 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.

Throttle

Symbol

Choke

Position-_"

Fast

Position ---"

Slow

Position

Throttle
Symbol --_"

Fast

Position

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.

Batte_

Oil

Hour

Meter --

1/10

/

PTO

Figure 6

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.

Brake

Figure 5

The hour meter operates whenever the ignition key

is in the On or On/Lights position and records the
actual hours of tractor operation.

LIFT LEVER

BRAKE PEDAL

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.

PTO (POWER TAKE-OFF) LEVER

@_

@_

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

shitting into reverse and if the operator leaves the

seat.

AUTODRIVE'-PEDAL

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.

NOTE: The brake pedal must be fully depressed to

activate the safety interlock switch when starling the

tractor.

PARKING BRAKE BU1 rON _._,

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.

NOTE: The parking brake must be set if the

operator leaves the seat with the engine running or
the engine will automatically shut off.

IMPORTANT: Always set the parking brake

when leaving the tractor unattended.

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: 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.

IMPORTANT: Never

force the shift lever. Doing
so may result in serious

damage to the tractor's

transmission.

10

$;F

\

Shift

Knob

CRUISE CONTROL BU'I-rON

The cruise control button is located on
the tractor dash panel to the left of the iBm

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

AutoDdve- pedal to deactivate cruise
control. Refer to the OPERATION section of this

manual for detailed instructions regarding the cruise

control feature.

6

|||

SECTION 8: OPERATION

SAFETY INTERLOCK SWITCHES

SEAT ADJUSTMENT LEVER

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 ofthe shift lever.

under the influence of alcoholic beverages

WARNING: Never operate the tractor

or drugs of any kind. Doing so can result in
serious personal injury or death.

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.

• 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

injuryor death,

IMPORTANT: Tampering with or attempting to

bypass the tractors Safety Interlock Swfches in any

way WILL void your warranty.

WARNING

• GO UP AND DOWN SLOPES, NOT ACROSS.

• AVOID SUDDEN TURNS.

• DO NOT OPERATE THE UNIT WHERE IT COULD SUP OR TIR

• 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 pLAC-

ING 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.

AVOID SERIOUS INJURY OR DEA1H

READ OPERATOR'S MANUAL

11

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.

from the discharge chute opening of the

WARNING: Keep hands and feet away
cutting deck.

NOTE: The deck wheels are an anti-scalp feature

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.

IMPORTANT: ft'you think you've struck a foreign

object, stop the engine immediately. Remove the

wire(s) from the spark plug(s), thoroughly inspect the
un# for any damage, and repair the damage before
restarting and operating the tractor

DRIVING THE TRACTOR

STARTING THE ENGINE

A

NOTE: Refer to the TRACTOR SET-UP section of ,_L

this manual for Gasoline and Oil fill-up instructions.

• Insert the tractor key into the ignition switch.

• Place the PTO lever in the disengaged (OFF)
position.

• Depress the brake pedal and set the parking
brake.

• Place the shift lever inthe NEUTRAL 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).

• Turn the ignition key clockwise to the START
position. After the engine starts, release the

key. It will return to the ON position.

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.

411

IMPORTANT: Do NOT use the shift lever to

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.

Turn the ignition key counterclockwise to the

OFF position.
Remove the key from the ignition switch to

prevent accidental starting.

WARNING: Avoid sudden starts,
excessive speed and sudden stops.

WARNING: Do not leave the seat of the

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.

• Depress the brake pedal to release the

parking brake and let the pedal up. Move the
throttle lever intothe FAST (rabbit) 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.

NOTE: If starting problems are encountered, refer

to theTROUBLESHOOTING 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.

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.

• 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.

SETTING THE CRUISE CONTROL

NOTE: The cruise control feature should only be

utilized in the forward direction.

• Place the shift lever in the FORWARD
position, then slowly depress the AutoDrive-

pedal until the desired speed is achieved.

• Lightly depress the cruise control button.

12

• While continuing to hold the cruise button in,

lift your foot from the AutoDdve- pedal (you
should feel the cruise latch engage).

• If properly engaged, the cruise control button
and the AutoDdve.- pedal should lock in the

down position, and the tractor will maintain the
same forward speed.

• 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 theAutoDrive _pedal.

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.

To turn the tractor's headlights off:

• Tum the key either into the On position (to

leave the engine running) or the Off position
(to shutthe engine off). Refer to Figure 4.

IMPORTANT: Never move the key into the Start

position while the engine is running. Doing so may

cause damage toyour engine's starter.

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.

• 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 excess degrees (a

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. Tuming 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.

OPERATING THE HEADLIGHTS

To turn the tractor's headlights on:

• Start the engine following the instructions
earlier in this section.

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

Refer to Figure 4.

in of 15 rise of

IMPORTANT: ff you think you've struck a foreign

object, stop the engine immediately. Remove the
wire(s) from the spark plug(s), thoroughly inspect the

un# for any damage, and repair the damage before
restarting and operating the mower.

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 CUFFING

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

cuttingdeck 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

parkingbrake, the engine will shut off.

IMPORTANT: The PTO lever cannot be in the

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 shi#

lever in the REVERSE position. Refer to SAFETY
INTERLOCK SWITCHES ear/ierin this section.

13

MOWING

This tractor is equipped with one of MT_s high
quality cutting decks. The following information will

be helpful when using the cutting deck with your

tractor.

not allow anyone in the area of the tractor

WARNING: To avoid possible injury, do

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.

,_ WARNING: Never direct the discharge

of material toward bystanders or allow
anyone near the machine while in

operation.

• 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.

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

weather.

• 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.

• 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.

• Keep the blades sharp and replace the blades
when worn. Refer to the MAINTENANCE

section of this manual for proper blade
sharpening instructions.

SECTION 9: ADJUSTMENTS

LEVELING THE DECK

,_ WARNING: Cutting blades are sharp.

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 tirepressure.

Front to Rear

The front of the cutting deck is supported by a stabi-
lizer 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:

Always protect hands by wearing heavy
leather work gloves to grasp blades.

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.
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

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.
Loosen the two jam nuts on the rear side of

the deck stabilizer bracket. See Figure 7A.

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.

Retighten the two jam nuts loosened earlier

when proper adjustment is achieved.

Side to Side

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

WARNING: Turn the tractor's engine

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 both blades

so that they are perpendicular with the tractor.

14

• Measurethedistancefromthe 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

Stabilizer

Bracket

Deck

Deck Hanger Bracket

Frontto Rear Side to Side

Figure 7

SEAT ADJUSTMENT

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.

Seat

Seat Adjustment Lever

Figure 8

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:

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

• Remove the hex nut and lock washer on the

top of ball joint. See Figure 9.

Hex Nut and
Lock Washer

Axle

Zerk Flttting Pivot Bar

(if so equipped)

i

BallJoln_

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.

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

is achieved.

NOTE: Threading the ba# joints too far onto the

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

15

Fronttiretoe-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 steedng

gear and support plate. See Figure 10.

InsertDowel

Here

Support _ ear

Plate

NOTE: View shown from beneath tractor, Shaft

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.

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

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

• Adjust if necessary.

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

CARBURETOR ADJUSTMENT

BRAKE ADJUSTMENT

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:

• Looking at the transmission from the right side
of the tractor, locate the compression spring

and brake disc. See Figure 11.

NOTE: View shown from beneath tractor. Transmission

Figure t 1

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

See Figure 11.

• Using a feeler gauge, set the gap between the

brake disc and the brake puck at .011".

• Re-tighten the hax nut loosened eadier.

,_ WARNING: If any adjustments are

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.

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.

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

authorized engine service dealer.

PTO (POWER TAKE-OFF) ADJUSTMENT

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:

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.

• Turn the tractor's engine off, remove the key
from the ignition switch and apply the tractor's

parking brake.

16

• LocatethePTO 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.

SECTION 10: MAINTENANCE

• Reinsert the Fro engagement rod into the
hole in the FrO adjuster link and reinsert the

cotter pin removed earlier (if undamaged).

PTO Engagement Rod

Figure 12

WARNING: Disconnect the spark plug

A

wire(s) and ground against the engine

before performing any adjustments, repairs
or maintenance.

ENGINE

Refer to the separate engine manual for engine

maintenance instructions.

Check engine oil level before each use as

instructed in the separate engine manual packed
with your unit. Read and fellow instructions
carefully.

Changing Engine Oil

• Unscrew oil fill cap and remove dipstick from
the oil fill tube. See Figure 13.

Oil Fill Cap Protective Cap

Oil Fill Tube Oil Drain Valve

Oil Drain Port

NOTE: Single-cylinderengineshown,

Vatve locationwillvary with engine style.

Figure 13

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.

• Push the oil drain valve in slightly, then rotate

counterclockwise and pull outward to begin
draining oil. See Figure 13.

• 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
oilhas finished draining.

• Refillthe engine with new motoroil.

IMPORTANT: Refill the engine with the proper

capacity and weight of motor oil as instructed in the
separate engine mBnuB[

Service sir 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.
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 plugtype and gap

specifications.

17

CLEANING THE ENGINE AND DECK

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.

IMPORTANT: Do NOT use a garden hose to

clean the cuffing deck. The ball bearings in the blade
spindles are sealed at the factory and cannot be re-
lubricated. Spraying water near the spindles can
significantly reduce the life of the beadngs.

CUTTING DECK REMOVAL

WARNING: 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.

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:

WARNING: Do NOT remove deck

,_ after the tractor.

immediately operating
Allow the engine and other moving parts

ample time to cool down.

• Move the PTO lever into the disengaged

(OFF) position and engage the parking brake.

• Lower the deck by moving the lift lever into the
bottom notchon the rightfender.

• 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

boffommost belt on the deck does NOT need to be
removed in order to remove the deck.

• 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.

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

provided.

• 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.

• 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.

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

NOTE: To propedy remount the cuffing deck,

perform the above steps in reverse order. Having a

second person assistyou will ease this procedure.

\

To Lift Assembl_

PTO Idler Pulley Bracket Deck Stabilizer Rod

(mounted on tractor)

NOTE: Beltcoversand othertractorcomponentsnot shownforclarity.42-inchdeck shown.

Figure 14

18

Deck Lift Arms

PTO Idler Pulley

PTO Belt

Engine Pulley

Deck

Stabilizer

Bracket

. Hooks /

Front of Tractor

"x

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

rottingare 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 liftlever into the bottom notch on the right fender.

• Remove the beltguards by removing the self-tapping screws that fasten them to the deck surface.

• Grasp the PTO idler pulley bracket and pivotit 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:/t 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 PTOIdler Pulley

• Deck belt(Bottom)

.)

Deck Idler Pulley

Left Hand

Double Pulley

Center Pulley

Serf-Tapping Screws

NOTE: Lefthandbeltcovernotshownforclarity. 46-inchdeckshown.

Figure 15

46-inch decks

• Lower the deck by moving the lift lever intothe bottom notch on the rightfender.

• 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 tensiononthe 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 are listed on the following page.

• PTO belt (Top)

Right Hand

Double Pulley

(beneath belt guard)

!9

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 properpmcedure.

• Remount the belt guards removed earlier.

42-Inch Deck 46-Inch Deck

PTO (Top) Belt
Bottom Belt

754-0472 754-0476

N/A 754-0349

CHANGING THE TRANSMISSION DRIVE BELT(S)

All belts on your tractor are subject to wear and should be replaced ff any signs of cracking, shredding or
retting are present.

IMPORTANT: The V-belts found onyour 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 drive belt(s) on your tractor, proceed as follows:

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 batter_, 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 ddve 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 ddve 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 pullingit 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.

2O

Variable-speed

Battery Tray

Opening

Shift Lever

• Drive belt(Lower)

Rear Idler Pulley • Drive belt (Upper)

Transmission Transmission Pulley

NOTE: View shownfromabovetractor,

• Remove the rear idler pulley from the double-
idler 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.

Front Idler Pulley _I

"Z2Z2222_-_-_

Belt Keeper :"

Front of 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.

:i

Auto - pedal

Engine Pulley

PTO Engagement Rod

Cotter Pin

Figure 17

PTO Adjuster Link

Hex BoR

0

NOTE: Viewshownfrombeneathtractor,

Figure 18

IMPORTANT: When remounting the engine

pulley, torque the center hex bolt to between 38 foot-
pounds and 50 foot-pounds.

21

• Removethe two hex bolts (from both sides of

the tractor) that affix the PTO actuator bracket
to the tractor frame. See Figure 19.

©

o

Idler Place Wrenches Here

Return

Bracket

lips

PTO Actuator DeckStop

Bracket )

Figure 19

• Carefully lower the PTO actuator bracket and
the engine pulley as an assembly while

removing the drive belt from the upper portion
ofthe engine pulley.

• 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.

Double-idler

Bracket

AutoDdve- Pedal

Return Spring

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.

• 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.

• Reassemble by following the above steps in

reverse order.

IMPORTANT: After replacing the drive belPs,

perform the PTO adjustment as instructed in the

ADJUSTMENTS section of this manual prior to

operating the tractor.

CUTTING BLADES

Hole

Front of Tractor

NOTE: View shownfrom above tractor.

Idler

Adj. Rod

Figure 20

Adjust the AutoDrive'- pedal after replacing the drive

belts on your tractor, if necessary, as follows:

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

Figure 21.

,_ WARNING: Cutting blades are sharp.

Always protect hands by wearing heavy

leather work gloves to grasp blades.

The blades may be removed for sharpening or

replacement as follows.

• 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.

• Place a block of wood between the center
deck housing baffle and the cutting blade to

act as a stabilizer. See Figure 22.

• Use a 15/16" wrench to remove the hex flange
nut that secures the blade to the spindle

assembly. See Figure 22.

22

NOTE: The hex flange nut has a right-handed

thread pattern. Do NOT attempt to force the nut in
the incorrect direction. Doing so may damage the

nut and create a safety hazard.

_nge Nut BIo_ of-_oood

Assembly t;umng ulaae_

IMPORTANT: Use a torque wrench to tighten the

blade spindle hex flange nut to between 70 foot-

pounds and 90 foot-pounds.

BATTERY

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 positiveterminal boot.

• Always keep the boot positioned over the

positive terminal to prevent shorting.

Figure 22

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.

IMPORTANT: /f 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.

Worn Blade Edgej_"

Blade Separation Wind Wing

nlinSi_ "

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 itbalances evenly.

IMPORTANT: ff removing the battery for any

reason, disconnect the NEGATIVE (Black) wire from

#'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 toyour engine's alternating system.

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.

FUSE

A fuse is installed in your tractor's widng 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.

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

23

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

engine before performing any maintenance.

WARNING: A/ways stop the engine and disconnect the spark plug wire(s) and ground against the

ENGINE

Lubricate the engine with motor oil as instructedin 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 oncea 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.

24

SECTION 12: TROUBLESHOOTING GUIDE

Trouble Corrective Action

Engine will
not crank

Engine

cranks but

will not start

Possible

Cause(s)

Safety switch
button not

depressed.

Battery installed
incorrectly.

Battery is dead
or weak.

Blown fuse

Throttle or choke
not in starting

)osition.

No fuel to the

carburetor.

No spark to
spark plug(s).

There are two safety switches in the starting circuit of your unit: the brake pedal switcf

and the PTO switch. Make certain the actuator is fully depressing the buttons on eact
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 rod wire which goes to th_
solenoid.

Charge at six amps with a 12-volt automotive-type battery charger for one hour or unt
fully charged.
Refer to operator's manual for fuse location. Replace fuse with automotive type 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 nec
essary, 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 wilt
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.

Refer to the OPERATION section of this manual for the correct position of the throttl_
control and choke for starting..

Gasoline tank empty. Fill.

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. I

no spark is present, have engine's magneto serviced by an authorized engine dealel

Engine

smokes

Excessive
vibration

Mower
won't

discharge

grass or
leaves

uncut strips

Dirty aircleaner.

Engine oil has

oeen overfilled.
Engine loses

Drankcase

vacuum.

Bent blade or
damaged pulley.

Engine speed
low.

Speed selection.
Cutting height

set too low.

Blades dull

If the air cleaner is dirty, the engine may not start. Refer to the engine manual packeq
with your unit.

Check oil level.

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.

Use lower ground speed. The slower your ground speed, the better the quality of cu
Raise deck.

Sharpen or replace blades (uncut strip problem only).

25

Model 604

.÷

5

7

REF.

NO.

1

2
3
4
5

6
7

8

9
10
11
12
13

PART

NO.
625-0051
725-1739

725-1649

629-0913
629-0924
710-0599
712-3006
725-1426

725-1657A
725-1741
725-1743

725-1745
726-1747

736-0222

736-0329

DESCRIPTION

Bul_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

26

28_ 25

24 S

35

Electrical System/Tractor Body

I

I

REF.

NO.

1
2

3-

4

5
6

7

8

9
10
11
12

13
14

15
16
17
18
19
20

PART

NO.

710-0768

710-0599
710-0751

710-0895
710-0924

710-3008

'12-0292

712-3004A
712-3027

725-1649
731-1978

731-1979
731-1980

731-1981
731-1982

731-1995
731-1996
736-0173

736-3078
747-1132

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, Yellow, 4-style
LH Side Panel, Yellow, 4-style.
RH Side Panel, Yellow, 4-style

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

;RER PART

NO. NO.

21 783-0808
22 710-0604

23 710-1017
24 710-3217

25 712-0142
26 731-0069

27 731-0072
28 731-1857
29 731-2106

30 747-1155
31 749-1087
32 731-2232

731-2234

33 751-0603
34 751-0659

751-0658

35 725-1745

36 746-1084

746-1065

746-1068

27

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

5O

2B

Lift Assembly

REF.

NO.

t

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

738-0 138
738-0380
741-0225
741-0715
746-0968

747-1111
756-1154
783-0678

783-0720

DESCRIPTION
Deck Stabilizer Rod
LiftShaft 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 Spdng

=Lift-assist Spring, 1.15 x 5.99

Found on Units w/46-inch Decks Only)
Fiat Washer, 5116
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 Range Beadng
LiftCable, 16.16

LiftHandle
Roller Pulley

Arm Lift
Deck Stabilizer Bracket

REF. PART

NO, NO.

27 710-0260
28 710-0604

29 710-0895
30 731-1990
31 731-2104
32 738-0155

33 783-0677
34 783-0685
35 783-0715
36 710-1268
37 712-3027
38 720-0309A
39 731-1989
40 732-0499
41 736-0175
42 736-0204
43 738-0137A

44 738-1007

45 783-0611

46 783-0738
47 783-0739

48 783-0753
49 757-0365

757-0372
50 735-0657
51 735-0656

726-3046

DESCRIPTION

Carriage Bolt, 5/16-18 x .62

Self Tapping Screw, 5/16-18 x .625
SerfTapping Screw, 1/4-15 x .75

LiftLever Cover
Shift Lever Cover w/Cup Holder

Shoulder Screw, .437 x 1,62
LiftAdjustment 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
Spdng Washer, .265 x .562 x .025
Fiat 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, Radiant Yellow

Seat, Radiant Yellow w/Drain Holes

LH Foot Pad
RH Foot Pad

Foot Pad Clips (Not Shown)

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 Ysrd-Man
Green, the part number to order would be

700-xxxx-0665.

Yard-Man Green: 0665

Yard-Man Yellow: 0674

Powder Black: 0637

29

Model 604

24

jJ_

42

45

37

33

30

44

25

_"" 36

29

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
731-1869

731-1904
638-0019

638-0021
638-0020

638-0022

RER

DESCRIPTION NO.

Lower Frame Assembly 27
Self-tapping Screw, 5116-18 x .625 28

RH Pivot Support Bmckst 29
LH Pivot Support Bracket 30

Pivot Bar Bracket

Hex Cap Screw, 3/8-16 x 1 (Grade 5) 31
LH Drag Unk 32
RH Drag Link

Jam Nut, 7/16-20 (Grade 2) 33

Hex Nut, 3/8-24 (Grade 2) 34
Flange Lock Nut, 3/8-16 35
Flange Lock Nut, 7/16-20
Flange Lock Nut, 5/16-18 36
Steering Gear, 11/90 Ratio
Steedng Pinion Gear

BallJoint, 7/16-20
LockWasher, 3/8

Flat Washer, .51 x 1,12 x .06
Steering Shaft, .625 OD x 24.4 37

Plastic Bushing, .38 ID
Hex Flange Bearing, 5/8 38
Shoulder Spacer, .38 ID 39
Steering Wheel, .625 Spllne 40
Steering Wheel Cap w/Logo 41
LH Axle Assembly, .625 Diameter 42
LH Axle Assembly, .625 [ .750 Diameter 43
RH Axle Assembly, .625 Diameter 44

RH Axle Assembly, .625 / .750 Diameter 45

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

1741-0487A

741-0706
734-1787A
727-0425A
783-0653

738-1020

736-0331
738-0140
736-0242

710-0643

737-3000

7100525

DESCRIP'nON

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

Fiat 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, Yellow w/Sprig Logo
Spdng Clip (Not Shown)
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
Grease Fittting (ifso equipped)

Cast Iron Pivot Bar (if so equipped)

NOTE: For painted parts, please refer to
the list of color codes below. Please add

the applicable color code, wherever
needed, to the pad number to order a

replacement part. For instance, if a part

numbered 700-xxxx is painted Yard-Man

Green, the pad number to order would be

700-xxxx-0665.

Yard-Man Green: 0665
Yard-Man Yellow: 0674

Powder Black: 0637

31

Model 604

(3 '12

21_

13

•. j78

I

18.,

36..,

6_

38

I_ i '

-.,j

iI

r

I

il

/281

°

J

o

j71

r"

I

35

69

76

52 "

J

83

23

68

>

3

10

16

32

J

J

Drive System

REF.

NO.

1
2
3
4
5
6
7

8
9

10
11

12
13

14
15

16

17
18

19
2O
21

22

23

24

25

26

27

28

29

3O

31

32
33

34
35

36

37
38

39

40

41

42

43
44

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

i732-0525

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
748-0416

DESCRIPTION

Shift Lever Bracket
Transaxle Mounting Bracket

Single-apeed 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, 114-20 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, 5116-18

Hex Nut, 3/8-24
Hex Nut, 7116-20

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, 318
Flat Washer, 5116
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
Shoulder Spacer, .38 ID

RER PART

NO. NO.

45 754-0467
46 754-0468
47 756-0981

48 783-0637
49 783-0667
50 783-0669

51 783-0714
52 647-0031

53 647-0032
54 i683-0266

55 710-1135
56 711-0736

57 711-1363
58 714-0104

59 732-0437
60 732-0955

61 735-0662
62 735-3049
63 736-0140

64 736-0187
65 736-0204
66 738-0155

67 738-0507B
68 741-0225

69 741-3065A
70 747-1137
71 747-1138
72 746-0413
73 748-0415
74 783-0653
75 _783-0732

76 783-0773
77 783-0780

78 683-0263
79 783-0668

80 736-0242
81 710-0627
82 634-0177

634-0104
634-0077

734-0255
734-1873
734-1730

83 734-1788A

727-0425A

DESCRIPTION

Variable-speed Belt

Drive Belt
Flat Idler, 2.75 OD

iShift 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

AutoDdve- 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 A34

;Hex Flange Bearing

Split Hex Flange Bearing
Cruise Control Rod

Brake Lock Control Rod
Cruise Latch

Spacer, 5/16 x 1.54

Stsaring 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

Hub Cap, Yellow w/Sprig Logo

Spring Clip (Not Shown)

33

Model 604

5

56

60

53

38

5

,.26

5 /

8'

29

"33

10

"-9
"20

23

10

1

34

I

t39

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

3O

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
736-1125

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, 3/6-16
Flange Lock Nut, 5/16-18

Hex Nut, 5116-18

Hex Flange Lock Nut, 1/4-20

Cotter Pin

Snap Mount Safety Interlock Switch
PTO Knob

Extension Spdng, .62 OD x 2.16
Extension Spdng, 1.20D 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, 3.50D
Stop Bracket

PTO Actuator Bracket

RER:

NO.

33
34
35
36
37

38
39

40

41
42
43

44

45
46
47
48
49
5O
51

52
53
64
55
56
57
58
59
60
61

62
63

PART

NO.

783-0797
783-0798

783-0799
783-0806
710-0561

710-0599

_36-0171

736-0322
750-0956

756-1158
756-1164

754-0472
754-0476

683-0263

1723-0444

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 (424nch Decks)
PTO Belt (46-inch Decks)

Lower Frame Assembly
Battery Strap
Compression Spdng, .1.314 OD x 2.35
Compression Spring, .66 OD x 1.5

Shoulder Screw, .5 x 1.25, 3/6-16
Battery Tray

Hitch Plate

Spacer Cup, 1,50D
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

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 Yard-Man

Green, the part number to order would be
700-xxxx-0665.

Yard-Man Green: 0665

Yard-Man Yellow: 0674

Powder Black: 0637

35

Model 604

46-inch Deck

55

25

®

19

26

11

42-inch Deck

25J26

3O

17

12

13

17

36

Cutting Decks

:IEF. PART
NO. NO.

1 17982
2 618-O240

756*0969

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-O431

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

30 742-0611

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 Shall

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, l/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, 114-20
Hex Flange Nut, 5/8-18

Flange Lock Nut, 3/6-16

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, .626 x .169

Shoulder Spacer, .488 x 1.63

Three-in-one Blade, Star Center, 16.26

IER PART
_10. NO.

31 742-0612
32 747-1116

33 754-0349
34 756-0627

35 783.0139
36 783-0141
37 783-0142
38 783-0747

39 783-0805
40 16606

41 618-0324

756-1151

42 683-0188

43 710-0604
44 ;'12-0181
45 712-0271
46 712-3006

47 731-2231
48 736-0270
49 742-0616

50 731-1636
51 731-1643A

52 712-3087
53 712-0291

54 710-0106
55 710-0578

56 736-0173
57 753-0852

58 753-0851

DESCRIPTION

Three-in-one Blade, Star Center, 14.88
Deck Release Pin

Deck Belt
Flat Idler Pulley, 3.50D

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 Seres 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, 114-20

Center Lock Nut, 1/4-20
Hex Cap Screw, 1/4-20 x 1.25
Screw, 1/4-20 x 1.6

Flat Washer, .28 x .74 x .063

46-inch Deck Assembly Complete
(w/o mulch kit)

42-inch Deck Assembly Complete

(w/o mulch kit)

NOTE: For painted parts, please referto
the list of colorcodes below. Please add

the applicable color code, wherever
needed, to the part number to order a

replacementpart. For instance, if a part
numbered 700-xxxx is painted Yard-Man
Green, the part numberto order wouldbe

700-xxxx*0665.

Yard-ManGreen: 0666

Yard-Man Yellow:0674

PowderBlack:0637

37

Model 604

Kohler

Single-cylinder

(d_ector must

face forward)

38

(deflectormust

faceIon_rd)

Briggs & Stratton

Intek Single

Engine Accessories

18

RER

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

736-0 119
736-0221
751 B221535
751-0535

751-0564
751-0616

751-0650

751-0651
751-3140

DESCRIPTION

Self Tapping Screw, #8-32 x .375
Serf 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, 5116
Flat Washer, 318x .56 x .018
Casing Clamp

Fuel Line Hose
Muffler Deflector

Muffler, Twin Inlet

RH Exhaust Pipe (Intek Twin)

, LH Exhaust Pipe (Intek Twin)
I Oil Drain Valve

39

_EF.

NO.

19
20

21
22

23

24
25
26
27
28

29

30
31
32
33

34
35

36

PART

NO.

r51-3141

751-3142
783-0615
783-0625A

710-3206A
712-3086
721-o375

736-0607

,751-0621

751-0617
712-0271
721-0208
732-0966
751 B213146

751-0619
746-1084

746-1086
746-1087

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)