Safety Instructions & Operator's Manual for
LAWN TRA CTOR
HYDROSTA TIC DRIVE
SERIES I
MODELS
LT150H331BV
LT150H381BV
MODEL NUMBER EXPLANATION
I LT I 1
MODEL DESIGNATION _
ENGINE HP
DRIVE SYSTEM TYPE
CUTTING WIDTH
LT - Lawn Tractor Model Designation
150 - 15.0 HP Engine Horse Power
H - Hydrostatic Transmission
Thank you for buying a SNAPPER product! Before operating the Lawn Tractor, read and follow the
"IMPORTANT SAFETY INSTRUCTIONS" on pages 2 thru 4, all other instructions contained in this manual and
the accompanying booklet "About Power Mower Safety" Lawn mowers and all power equipment can be
potentially dangerous if used improperly. REMEMBER: SAFETY REQUIRES CAREFULL USE IN ACCORDANCE
WITH INSTRUCTIONS AND COMMON SENSE!
81 I I, I v I
I
33 - 33" Cutting Width Mower
38 - 38" Cutting Width Mower
I - Series Designation
B - Briggs & Stratton
V - Over Head Valve Type Engine
ENGINE TYPE
ENGINE MODEL
SERIES DESIGNATION
.SNAPPER, McDonough,GA., 30253 U.S.A.
COPYRIGHT © 2003
SNAPPER PRODUCTS INC.
ALL RIGHTS RESERVED
MANUAL No. 7-5536 (I.R. 3/25/03)
IMPORTANT SAFETY INSTRUCTIONS
WARNING: This powerful cutting machine is capable of amputating hands and feet and can throw objects that
can cause injury and damage! Failure to comply with the following SAFETY instructions could result in serious
injury or death to the operator or other persons. The owner of the machine must understand these instructions
and must allow only persons who understand these instructions to operate machine. Each person operating the
machine must be of sound mind and body and must not be under the influence of any substance, which might
impair vision, dexterity or judgment. If you have any questions pertaining to your machine which your dealer
cannot answer to your satisfaction, call or write the Customer Service Department at SNAPPER, McDonough,
Georgia 30253. Phone: (1-800-935-2967).
PROTECTION FOR CHILDREN
Tragic accidents can occur ifthe 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.
1. KEEP children out of the mowing area and under the
watchful care of a responsible adult.
2. DO NOT allow children in yard when machine is
operated (even with the blade OFF).
3. DO NOT allow children or others to ride on machine,
attachments or towed equipment (even with the
blades OFF). They may fall and be seriously injured.
4. DO NOT allow pre-teenage children to operate
machine.
5. ALLOW only responsible adults & teenagers with
mature judgment under close adult supervision to
operate machine.
6. DO NOT operate blades in reverse. STOP BLADES.
LOOK and SEE behind and down for children, pets
and hazards before andwhile backing.
7. USE EXTRA CARE when approaching blind corners,
shrubs, trees, or other objects that may obscure
vision.
PROTECTION AGAINST TIPOVERS
Slopes are a major factor related to loss-of-control and tip-
over accidents, which can result insevere injury or death.
All slopes require extra CAUTION. Ifyou cannot back up
the slope or if you feel uneasy on the slope, DO NOT mow
it. Use extra care with grass catchers or other attachments;
these affect the handling and the stability of the machine.
1. DO NOT operate machine on slopes exceeding 15
degrees (27% grade).
2. Exercise EXTREME CAUTION on slopes above 10
degrees (18% grade). Turn blades OFF when traveling
uphill. Use a slow speed and avoid sudden or sharp
turns.
3. DO NOT operate machine back and forth across face
of slopes. Operate up and down. Practice on slopes
with blades off.
4. AVOID starting, stopping or turning on slopes. If
machine stops going uphill or tires lose traction, turn
blades OFF and back slowly straight down the slope.
5. STAY ALERT for holes and other hidden hazards. Tall
grass can hide obstacles. Keep away from ditches,
washouts, culverts, fences and protruding objects.
PROTECTION AGAINST TIPOVERS
(Continued From Previous Column)
6. KEEP A SAFE DISTANCE (at least 3 feet) away from
edge of ditches and other drop offs. The machine
could turn over ifan edge caves in.
7. Always begin forward motion slowly and with caution.
8. Use weights or a weighted load carrier in accordance
with instructions supplied with a grass catcher. DO
NOT operate machine on slopes exceeding 10 degrees
(18% grade) when equipped with grass catcher.
9. DO NOT put your foot on the ground to try to stabilize
the machine.
10. DO NOT operate machine on wet grass. Reduced
traction could cause sliding.
11. Chose a low enough speed setting so that you will not
have to stop or shift on a slope. Tires may lose traction
on slopes even though the brakes are functioning
properly.
12. DO NOT operate machine under any condition where
traction, steering or stability is doubtful.
13. Always keep the machine in gear when going down
slopes. DO NOT shift to neutral (or actuate hydro roll
release) and coast downhill.
PREPARATION
1. Read, understand, and follow instructions and
warnings in this manual and on the machine, engine
and attachments. Know the controls and the proper
use of the machine before starting.
2. Only mature, responsible persons shall operate the
machine and only after proper instruction.
3. Data indicates that operators age 60 and above, are
involved in a large percentage of mower-related
injuries. These operators should evaluate their ability
to operate the mower safely enough to protect
themselves and others from serious injury.
4. Handle fuel with extra care. Fuels are flammable and
vapors are explosive. Use only an approved fuel
container. DO NOT remove fuel cap or add fuel with
engine running. Add fuel outdoors only with engine
stopped and cool. Clean spilled fuel from machine. DO
NOT smoke.
5. Practice operation of machine with BLADES OFF to
learn controls and develop skills.
6. Check the area to be mowed and remove all objects
such as toys, wire, rocks, limbs and other objects that
could cause injury if thrown by blade or interfere with
mowing.
IMPORTANT SAFETY INSTRUCTIONS
PREPARATION
(Continued From Previous Page)
7. Keep people and pets out of mowing
Immediately STOP blades, STOP engine, and
STOP machine if anyone enters the area.
8. Check shields, deflectors, switches, blade
controls and other safety devices frequently for
proper operation and location.
9. Make sure all safety decals are clearly legible.
Replace if damaged.
10. Protect yourself when mowing and wear safety
glasses, long pants and substantial footwear.
11. Know how to STOP blades and engine quickly
in preparation for emergencies.
12. Use extra care when loading or unloading the
machine into a trailer or truck.
13. Check grass catcher components frequently for
signs of wear or deterioration and replace as
needed to prevent injury from thrown objects
going through weak or worn spots.
area.
SAFE HANDLING OF GASOLINE
To avoid personal injury or property damage, use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive
1. Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
2. Use only an approved fuel container.
3. DO NOT remove fuel cap or add fuel with the
engine running. Allow the engine to cool before
refueling.
4. DO NOT refuel the machine indoors.
5. DO NOT store the machine or fuel container
inside where there is an open flame, spark or
pilot light such as on a water heater or other
appliances.
6. DO NOT fill fuel containers inside a vehicle or
on a truck or trailer bed with a plastic liner.
Always place the containers on the ground
away from the vehicle before filling.
7. Remove gas-powered equipment from the
vehicle or trailer and refuel it on the ground. If
this is not possible, then refuel equipment using
a portable container, rather than a gasoline
dispenser nozzle.
8. DO NOT start gas powered equipment in
enclosed vehicles or trailers.
9. Keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until
fueling is complete. DO NOT use a nozzle lock-
open device
10. If fuel is spilled on clothing, change clothing
immediately.
11. Never overfill a fuel tank. Replace fuel cap and
tighten securely.
OPERATION
1. Mount and dismount machine from left side.
2. Start engine from operator's seat, if possible.
Make sure blades are OFF and parking brake is
set.
3. DO NOT leave machine with engine running.
STOP engine, STOP blades, SET brake, and
Remove key before leaving operators position
of any reason.
4. DO NOT operate machine unless properly
seated with feet on feet rests or pedal(s).
5. STOP BLADES and ENGINE and make sure
blades have stopped before removing grass
catcher or unclogging mower to prevent loss of
fingers or hand.
6. Blades must be OFF except when cutting grass.
Set blades in highest position when mowing
over rough ground.
7. Keep hands and feet away from rotating blades
underneath deck. DO NOT place foot on ground
while BLADES are ON or machine is in motion.
8. DO NOT operate machine without entire grass
catcher or guards in place. DO NOT point
discharge at people, passing cars, windows or
doors.
9. Slow down before turning.
10. Watch out for traffic when near or crossing
roadways.
11. STOP engine immediately after striking an
obstruction. Inspect machine and repair damage
before resuming operation.
12. Operate machine only in daylight or with good
artificial light.
13. Move joystick (if equipped) SLOWLY to maintain
control during speed and directional changes.
14. Exercise CAUTION when pulling loads. Limit loads
to those you can safely control and attach loads to
hitch plate as specified with SNAPPER attachment
instructions.
15. On slopes, the weight of the towed equipment may
cause loss of traction and loss of control. When
towing, travel slowly and allow extra distance to
stop.
16. DO NOT operate engine in enclosed areas.
Engine exhaust gases contain carbon
monoxide, a deadly poison.
3
IMPORTANT SAFETY INSTRUCTIONS
MAINTENANCE
1. DO NOT store machine or fuel container inside
where fumes may reach an open flame, spark or
pilot light such as in a water heater, furnace,
clothes dryer or other gas appliance. Allow
engine to cool before storing machine in an
enclosure. Store fuel container out of the reach
of children in a well ventilated, unoccupied
building.
2. Keep engine free of grass, leaves or excess
grease to reduce fire hazard and engine
overheating.
3. When draining fuel tank, drain fuel into an
approved container outdoors and away from
open flame.
4. Check brakes frequently; adjust, repair or
replace as needed.
5. Keep all bolts, nuts and screws properly tight.
Check that all cotter pins are in proper position.
6. Always provide adequate ventilation when
running engine. Exhaust gases contain carbon
monoxide, an odorless and deadly poison.
7. Disconnect negative (black) cable from battery
before performing maintenance or service.
Cranking engine could cause injury.
8. DO NOT work under machine without safety
blocks.
9. Service engine and make adjustments only
when engine is stopped. Remove spark plug
wire(s) from spark plug(s) and secure wire(s)
away from spark plug(s).
10. DO NOT change engine governor speed
settings or overspeed engine.
11. Lubricate machine at intervals specified in
manual to prevent controls from binding.
12. Mower blades are sharp and can cut. Wrap the
blades or wear heavy leather gloves and use
CAUTION when handling them.
13. DO NOT test for spark by grounding spark plug
next to spark plug hole; spark plug could ignite
gas exiting engine.
14. Have machine serviced by an authorized
SNAPPER dealer at least once a year and have
the dealer install any new safety devices.
15. Use only genuine SNAPPER replacement parts
to assure that original standards are
maintained.
4
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS .......... 2 - 4
TABLE OF CONTENTS ........................................ 5
SECTION 1 - FAMILIARIZATION ......................... 6
Components ........................................................ 6
Controls ................................................................ 6
SECTION 2 -
OPERATING INSTRUCTIONS ........................ 7-12
Pre-start Checklist .............................................. 7
Operator's Seat Adjustment .............................. 7
Starting & Stopping Engine ................................ 8
Starting & Stopping Wheel Drive ....................... 9
Starting & Stopping Mower Blades .............. 9-10
Parking Brake ..................................................... 10
Cutting Height Adjustment ............................... 10
Rolling Tractor With Engine Off ....................... 11
Reverse Lockout Mechanism ........................... 12
SECTION 3 -
MAINTENANCE INSTRUCTIONS ................. 13-17
Service - After First 5 Hours ........................ 13
Change Engine Oil .......................................... 13
Check Blade Brake ......................................... 13
Check Mower Blade .................................. 13-14
Check Deck Drive Belt ................................... 14
Service - Every 25 Operating Hours ......... 14
Mower Components ....................................... 14
Check Blade Brake ......................................... 14
Lubrication (Tractor) ................................ 15-16
Front Wheel Bearings .................................... 15
Axle Spindles .................................................. 15
Clutch/Brake Pivot .......................................... 15
Steering Sector Gear ...................................... 15
Steering Shaft ................................................. 15
Steering Drag Link .......................................... 15
Steering Tie Rod ............................................. 16
Blade Engagement Mechanism ..................... 16
Park Brake Lever ............................................ 16
Deck Lift Mechanism ...................................... 16
Service - Annually ..................................... 16-17
Engine ............................................................. 16
Fuel Filter ................................................... 16-17
Spark Plug ....................................................... 17
Hydrostatic Transmission Oil ........................ 17
Safety Interlock System Checks ................... 17
SECTION 4 -
ADJUSTMENTS & REPAIR ........................... 18-33
Engine Adjustments & Repair .......................... 18
Mower Deck & Component Adjustments ........ 18
Blade Brake Adjustment ................................... 18
33" Deck Blade Brake Adjustment ............... 18
38" Deck Blade Brake Adjustment ............... 18
Blade Belt Adjustment (33" Deck) ................... 19
Blade Belt Adjustment (38" deck) .................... 19
Adjusting Mower Blade (33" Deck) ............. 19-20
33" Side To Side ........................................... 19-20
(Deck Level Adjustment)
33" Front To Rear Sector Plates ...................... 21
(Deck Level Adjustment)
33" Front To Rear Front Lift Rod ..................... 21
(Deck Level Adjustment)
38" Side To Side ................................................ 22
(Deck Level Adjustment)
38" Front To Rear .............................................. 23
(Deck Level Adjustment)
Brake Adjustment - HYDRO DRIVE .................. 23
Steering Adjustment ......................................... 24
Shifter Adjustment ............................................ 24
Traction Drive Belt Adjustment ........................ 25
Mower Blade Service ................................... 26-27
Blade Wear Limits .......................................... 26
Mower Blade Sharpening .............................. 26
Mower Blade Replacement ....................... 26-27
Traction Drive Belt Removal/Replace ......... 27-29
Blade Belt Removal & Replacement ................ 30
33" Deck Drive Belt ........................................ 30
38" Deck Drive Belt ........................................ 30
Battery Service ............................................. 31-32
AVAILABLE ACCESSORIES .................................. 33
SECTION 5 -
ELECTRICAL SYSTEM ...................................... 34
Schematic - Briggs & Stratton .......................... 34
TROUBLESHOOTING GUIDE ...................... 35-36
MAINTENANCE SCHEDULE ............................. 37
MAINTENANCE PARTS ..................................... 37
WARRANTY .................................................... 38
IMPORTANT
The figures and illustrations in this manual are
provided for reference only and may differ from your
specific model. Contact your Snapper dealer if you
have questions.
PRIMARY MAINTENANCE ............................ 39-42
PRODUCT REGISTRATION FORM ................... 43
Section 1 - FAMILIARIZATION
PARK
BRAKE
LEVER
CUTTING HEIGHT
SEAT
ADJUSTMENT
KNOB
SPEED
CONTROL
LEVER
BATTE RY
(UNDER SEAT)
OPERATOR'S
SEAT
CONTROL PANEL
SLOW
"**÷÷
*°°..,÷÷
°*°_.
"*°Oo.
°°_°°o
°°'°*_,,°°,,..
STEERING
WHEEL
DASHBOARD
CONTROLS
KEY
CONTROL
FUEL TANK
(UNDER HOOD)
HOOD
OVERRIDE
LEVER
BLADE
ENGAGEMENT
LEVER
DISCHARGE
DEFLECTOR
MOWING DECK
(33" SHOWN)
FIGURE 1.1
COMPONENTS
The nomenclature drawings above, illustrate the
essential components of the SNAPPER Lawn Tractor. It
is recommended that all operators of this equipment
become thoroughly familiar with the components and
their operation BEFORE OPERATING.
Specific details involving the engine are found in the
separate Engine Owner's Manual.
HEADLIGHTS
ENGINE
Study the Important Safety Instructions, this Operator's
Manual and Engine Owner's Manual before operating
this machine. Keep these manuals available for future
reference.
CONTROLS
All operators should be acquainted with the operator's
controls before attempting start-up or operation of the
Lawn Tractor. See the Control Panel drawing above.
Section 2 - OPERATING INSTRUCTIONS
2.1 PRE-START CHECKLIST
Make the following checks and perform service as
required before each start-up.
2.1.1. Check tires and add air as needed to bring
pressure to 12 P.S.I. in front tires and 12 P.S.I. in
rear tires.
2.1.2. Check guards, deflectors and covers to make
sure all are in place and securely tightened. If guards
are missing or damaged, replace BEFORE using
mower.
2.1.3. Check engine oil and add oil as needed to
bring level up to, but not over, the FULL mark. Refer to
engine owner's manual for oil specifications. See Figure
2.1.
FUEL TANK q
/
TIGHTEN CAP
AFTER
FILLING TANK
FIGURE 2.2
FIGURE 2.1
2.1.4. Check blade engagement lever to insure it
operates properly. The blade engagement lever
must be moved manually from "ON" to "OFF" to
stop blade.
2.1.5. Clean exterior surfaces of cutting deck, engine
and tractor of any accumulation of dirt, grass, oil, etc.
Keep engine air intake screens and cooling fins clean at
all times.
2.1.6. With engine "OFF" move the tractor outside
and add fuel to the fuel tank. Securely tighten fuel cap
after refueling. Refer to engine owner's manual for fuel
specifications. See Figure 2.2.
2.1.7. Check Reverse Lockout Mechanism. With
engine "OFF", raise blade engagement lever to "ON".
The speed control lever cannot be shifted into
"Reverse".
2.2 OPERATOR'S SEAT ADJUSTMENT
2.2.1. FRONT TO REAR ADJUSTMENT
1. With the engine "OFF". raise operator's seat and
loosen the two adjusting knobs on the seat support.
Lower the seat. Sit in the operator's seat and slide the
seat forward or backward until the clutch/brake pedal
can be fully depressed comfortably. Raise seat and
tighten the adjusting knobs to secure seat in position.
See Figure 2.3.
LOOSEN ADJUSTING
KNOBS TO ADJUST
SEAT
\
\
FIGURE 2.3
Section 2 - OPERATING INSTRUCTIONS
2.3 STARTING & OPERATION
2.3.1. STARTING ENGINE
1. Take a comfortable position in seat of machine,
look around to make sure that the area you are going to
mow is clear of people, children and pets. Take note of
any stationary obstacles!
NOTE: The interlock system will prevent the engine from
starting if the blade engagement lever is in the "ON" (up)
position or if the clutch/brake pedal is not fully depressed. If
the interlock system ever fails to work, DO NOT OPERATE
the tractor until the interlock has been repaired.
2. Push blade engagement lever down to the "OFF"
position. See Figure 2.4.
BLADE
ENGAGEMENT
LEVER
5. Choke engine for cold starting by moving engine
speed control to "CHOKE" position. Little or no
choking will be needed when restarting a warm
engine. Insert key in switch. Turn key to "START"
position to crank engine and hold until engine starts,
then release key to "RUN" position. See Figure 2.6.
NOTE: DO NOT crank engine for more than five
seconds at a time. This will help prevent the starter from
overheating and/or running down the battery. If cranking
time is more than five seconds, locate and correct cause
of starting problem.
6. After engine starts, release key, move the
engine speed control to "FAST" position and allow
engine to warm up before proceeding. See Figure
2.6.
FAST
PUSH BLADEENGAGEMENT LEVER
DOWN TO "OFF" TO
START ENGINE
3. Depress the clutch/brake pedal fully. See Figure 2.5.
4. Move speed control lever to neutral.
NOTE: The seat interlock will shut off the engine if the
operator gets off the seat without setting the parking
brake or if the blade is running. If the interlock ever fails
to work, DO NOT OPERATE the tractor until the
interlock has been repaired.
m CLUTCH/BRAKE PEDAL
4 VER
DOWN
FIGURE 2.4
/
SLOW
\
ENGINE
SPEED
CONTROL
FIGURE 2.6
WARNING
DO NOT leave machine with engine running. Stop
engine. Stop blade. Set parking brake. Remove key.
KEY
PUSH PEDAL ALL THE
WAY DOWN TO START
ENGINE
FIGURE 2.5
Section 2 - OPERATING INSTRUCTIONS
2.3 STARTING & OPERATION (continued)
2.3.2. STARTING WHEEL DRIVE
1. Shift speed control lever to neutral.
2. Start engine. Refer to Section "STARTING
ENGINE".
3. Release clutch/brake pedal.
4. Slowly shift speed control lever forward for
forward motion or to the rear for reverse motion. See
Figure 2.7.
--REVERSE
FORWARD
SPEEDS
2.4 STOPPING ENGINE, BLADE, & WHEEL DRIVE
2.4.1. STOPPING ENGINE
1. Stop engine by turning key to the "OFF" position.
See Figure 2.9.
I
FIGURE 2.9
2.4.2. STOPPING WHEEL DRIVE
1. Fully depress clutch/brake pedal to stop wheel
drive. See Figure 2.10.
2.3.3. STARTING MOWER BLADE
1. Start engine. Refer to Section "STARTING
ENGINE".
2. Raise blade engagement lever to "ON". See
Figure 2.8.
PULL BLADE
ENGAGEMENTLEVER UP
TO"ON'TO START
MOWER BLADE{S)
ON
::r BLADE
LEVER
FIGURE 2.8
WARNING
DO NOT operate blades in reverse. STOP BLADES.
LOOK and SEE behind and down for children, pets
and hazards before and while backing.
FULLY DEPRESS
CLUTCH/BRAKE PEDAL TO
STOP WHEEL MOTION
FIGURE 2.10
)
Section 2 - OPERATING INSTRUCTIONS
2.4 STOPPING
2.4.3. STOPPING MOWER BLADE
1. Stop mower blade by moving blade engagement
lever down to the "OFF" position. See Figure 2.11.
BLADE
j LEVER
? OFF
FIGURE 2.11
WARNING
Once blade is disengaged, it should come to a
complete stop in 5 seconds or less. If the blade
continues to rotate after 5 seconds, the blade brake
must be adjusted. Refer to Section "BLADE BRAKE
ADJUSTMENT" for adjustment procedures or return
machine to dealer for adjustment. DO NOT CONTINUE
to operate mower until blade brake is properly adjusted.
2.4.5. RELEASING PARK BRAKE
1. Fully depress clutch/brake pedal. Move park brake
lever "DOWN" to release park brake. Release
clutch/brake pedal. See Figure 2.13.
PARK BRAKE
CLUTCH/BRAKE
LEVER
FIGURE 2.13
2.5. CUTTING HEIGHT ADJUSTMENT
1. Depress lock button on cutting height adjustment
lever. See Figure 2.14.
DEPRESS
LOCK BUTTON m
2.4.4. SETTING PARK BRAKE
1. Fully depress clutch/brake pedal.
2. Move park brake lever up into slot. See Figure 2.12.
PUSH PEDAL ALL
MOVE PARK BRAKE
LEVER "UP" TO
ENGAGE PARK BRAKE
PARK BRAKE
LEVER
FIGURE 2.12
CUTTING
HEIGHT
ADJUSTMENT
LEVER
LOWEST CUT
FIGURE 2.14
2. Raise or lower deck to any of six positions as
desired. Release lock button.
DO NOT park machine on slopes.
10
Section 2 - OPERATING INSTRUCTIONS
2.6. ROLLING TRACTOR WITH ENGINE OFF
2.6.1. Rolling Hydro Models
1. With engine "OFF", move to rear of tractor.
2. Pull the roll release control all the way out to
disengage the hydro transmission. See Figure 2.15.
PULL ROLL RELEASE
CONTROL ALL THE WAY
J
DO NOT disengage the hydro transmission and coast
down slopes. DO NOT use Roll Release Control to
disengage the hydro transmission unless machine
motion can be controlled and engine is off.
/
PUSH ROLL RELEASE
IN TO ENGAGE HYDRO
TRANSMISSION
FIGURE 2.15
3. Move tractor to desired location.
4. Push roll release control all the way in to engage
hydro transmission. See Figure 2.15.
5. Set park brake.
ROLL RELEASE
CONTROL
NOTE: The transmission will not propel the tractor if it is
left in the "ROLL" position.
11
Section 2 - OPERATING INSTRUCTIONS
2.7. REVERSE LOCKOUT MECHANISM
Data indicates that tragic back-over accidents occur
each year. These accidents usually involve unsupervised
children. Many times these children have been given
rides on the machine and have been trained to view this
potentially dangerous piece of machinery as fun rather
than being taught how to avoid danger.
This riding mower has a Reverse Lockout Mechanism.
This mechanism prevents the mower from being shifted
into reverse with the blades running. To shift into reverse
you must first stop the blades and then shift to reverse. It
is our recommendation that this mechanism remain
functional and the operator of this equipment develop the
habit of never backing up with the blades running. As the
Safety Instructions Indicate, DO NOT operate blades in
reverse. STOP BLADES, LOOK AND SEE BEHIND
AND DOWN for children, pets and hazards before
and while backing.
We realize that this could cause a change to your
previous mowing method but we encourage you to adjust
to this new system. Do not defeat the Reverse Lockout
Mechanism.
If you operate your mower near roadways or use
attachments that require quicker shifting to reverse,
there is an override lever provided. This lever can be
pushed and held before starting the blades and will allow
reverse operation until the blade engagement lever is
moved to the "OFF" position, at which time the system
will return to its Reverse Lockout mode. This feature
should never be selected unless you are absolutely sure
that no children or others are present in the mowing area
and that all children are away and supervised by a
responsible adult.
2.7.1.
Reverse Lockout Mechanism Override
1.
Stop machine. Stop blades.
2.
Depress and hold Override Lever.
3.
Raise blade engagement lever to "ON".
4.
Release override lever.
WARNING
LOOK and SEE behind and down for children, pets
and hazards before and while backing.
IMPORTANT! DO NOT use the Reverse Lockout
Mechanism Override as the normal operating mode. To
return to the Reverse Lockout Mechanism mode, move
the blade engagement lever down to the "OFF" position.
The Override will reset to Reverse Lockout.
2.7.2. Check the Reverse Lockout Mechanism
Before each use, check the Reverse Lockout
Mechanism for proper function. Perform the following
check with the engine "OFF".
1. With engine "OFF", raise blade engagement
lever to "ON".
2. The Reverse Lockout Mechanism must
prevent the speed control lever from going into
reverse.
| WARNING
DO NOT operate machine if Reverse Lockout
Mechanism is not functioning properly. Contact your
SNAPPER dealer immediately for assistance.
DANGER
LOOK and SEE behind and down for children, pets
and hazards before and while backing.
BLADES must be turned off before backing machine.
DO NOT allow children on machine (even with
blades off) or in yard when mowing.
12
Section 3 - MAINTENANCE
3.1 INTRODUCTION
To retain the quality of the Tractor, use genuine
SNAPPER replacement parts only. Contact a local
SNAPPER dealer for parts and service assistance. For
the correct part or information for a particular Tractor,
always mention the model and serial number.
SNAPPER recommends returning the Tractor to an
authorized SNAPPER dealer annually for inspection
and addition of any new devices, which might upgrade
the safety of the Tractor. For the nearest SNAPPER
dealer in your area, check the yellow pages under the
heading LAWN MOWERS. For engine parts and
service, look for the engine manufacturer's dealers
under the heading, ENGINES - gasoline.
3.2 SERVICE - AFTER FIRST 5 HOURS
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blades running. STOP blades.
STOP engine. Set park brake. Remove key. Remove
spark plug wire from spark plug and secure wire away
from spark plug. Engine and components can be
extremely hot. Avoid bums by allowing engine and
components sufficient time to cool.
3.2.1. CHANGE ENGINE OIL
The engine is equipped with a FastexTM oil drain.
1. Rotate drain body counterclockwise and pull out to
open drain. See Figure 3.1.
2. Drain oil into a 2 quart container placed beneath
end of oildrain.
3. After all oil has drained, push drain body "IN" and
rotate clockwise to close.
4. Fill engine with new motor oil as specified in engine
owner's manual.
.
Check blade for straightness. Refer to Section
"ADJUSTING MOWER BLADE".
5.
Check torque of blade mounting bolts.Torque to:
33" deck - 30 to 40 ft. Ibs. See Figure 3.2.
38" deck - 70 to 80 ft. Ibs. See Figure 3.3.
f
I OIL
i TUBE
\
FIGURE 3.1
FILLER
OIL DRAIN
FASTEXTM I
I The following procedure requires the engine and
blades to be operated. Exercise extreme caution. Clear
area of loose parts & tools first. Only operate blades
when seated in the operator's seat.
3.2.2. CHECK BLADE BRAKE
1. Check blade brake for proper function. Blades
should stop rotating in 5 seconds or less after moving
the blade engagement lever down to the OFF position.
2. If blades continue to rotate longer than 5 seconds
do not operate machine. Refer to Section "BLADE
BRAKE ADJUSTMENT" or contact your SNAPPER
dealer for assistance.
3.2.3. CHECK MOWER BLADE
1. Remove deck from tractor.
2. Carefully position deck to access blade.
3. Check blade for sharpness, wear and damage.
Refer to Section "BLADE WEAR LIMITS".
/
/
/
/
TORQUE 33" BLADE TO
30 TO 40 FT, LBS,
FIGURE 3.2
Blades must stop rotating in 5 seconds or less after I
blades have been turned off. DO NOT operate machine I
until blade brake has been adjusted and functioning I
properly. Contact your SNAPPER dealer for assistance. I
13
Section 3 - MAINTENANCE
3.2.3. CHECK MOWER BLADE (Continued)
TORQUE 38" BLADES TO
70 TO 80 FT. LBS.
FIGURE 3.3
3.2.4. CHECK 33" DECK DRIVE BELT
1. With engine "OFF", move blade engagement
lever to "ON".
2. Measure blade cable extension spring. Spring
should extend 1" +/-1/8" for proper belt tension. See
Figure 3.4.
BLADE CABLE
EXTENSION SPRING
2. Change air filter. Pull up and rotate the air cleaner
latch to remove cleaner cover. See Figure 3.5.
IMPORTANT: When cover is removed, you are
viewing the carburetor side of the air filter, which will
appear clean. Remove filter and pre-cleaner for
inspection.
AIR CLEANER
LATCH
AIR CLEANER
COVER
FIGURE 3.5
2. Refer to engine owner's manual for cleaning and
service instructions. Remove and clean engine air
pre-cleaner. Remove and replace engine air cleaner.
See Figure 3.6. Install pre-cleaner and air cleaner
per engine owner's manual.
AIR PRE-
CLEANER
X + 1" +/-
FIGURE 3.4
3. To adjust tension, Refer to Section "BLADE
BELT ADJUSTMENT".
3.2.5. CHECK 38" DECK DRIVE BELT
1. On 38" model, check belt for excessive wear or
damage and replace if necessary, there are no
adjustments on this model.
3.3
SERVICE - EVERY 25 OPERATING HOURS
3.3.1. CHECK ENGINE
1. Change engine oil. Refer to Section "CHANGE
ENGINE OIL". Refer to engine owner's manual for oil
specification.
mR CLEANER
FIGURE 3.6
3. Reinstall air cleaner cover. Insert tabs located at
the bottom of the cover into corresponding slots in
engine cover. Position cover and engage latch over
cover and rotate and push down to lock.
14
Section 3 - MAINTENANCE
3.3.2. MOWER COMPONENTS
1. Check deck drive belt for proper tension. Refer
to Section "CHECK DECK DRIVE BELT".
2. Check blades for sharpness, wear, damage and
torque. Refer to Section "MOWER BLADE
REPLACEMENT".
3. Check mower deck for proper levelness. Refer
to Section "MOWER DECK ADJUSTMENT
LEVELNESS".
4. Clean mower deck.
a. Remove key from ignition switch.
b. Remove deck.
c. Clean underside of mower deck, removing all
accumulation of grass clippings and debris.
d. Clean top of deck, removing all grass clippings
and debris.
5. 33" and 38" blade spindle lubrication.
a. Lubricate spindle with 1 to 3 shots of general
purpose grease from grease gun.
6. Lubricate all mower deck linkage pivot points
with a light coat of motor oil.
3.3.3. CHECK BLADE BRAKE
1. Refer to Section "CHECK BLADE BRAKE".
3.3.4. TRACTOR LUBRICATION
1. Front Wheel Bearings
Lubricate each front wheel bearing through the
grease fitting on wheel hub. Using general purpose
grease in a grease gun, add grease until grease
purges from bearing. See Figure 3.7.
2. Axle Spindles
Lubricate each axle spindle with 1 to 3 shots of
general purpose grease. See Figure 3.7.
3. Clutch/Brake Pivot
The clutch/brake pivot is located on the left hand
underside of the tractor and is lubricated with one
shot of general purpose grease. See Figure 3.8.
F- CLUTCH/BRAKE
/ PIVOT LUBRICATION
.,,, FITTING
FIGURE 3.8
4. Steering Sector Gear
Lubricate with a light coat of general purpose grease.
See Figure 3.9.
FUEL TANK
SECTOR
NOTE: The right hand spindle fitting faces forward and
the left hand spindle fitting faces to the rear.
SPINDLE
LUBRICATION
FITTING
FRONT WHEEL
BEARING LUBRICATION
FITTING
FIGURE 3.7
FIGURE 3.9
5. Steering Shaft
Lubricate steering shaft wear points with a light coat
of SAE30 oil.
15
Section 3 - MAINTENANCE
6. Steering Drag Link
Lubricate both ends of steering drag link with a small
amount of SAE30 oil. See Figure 3.10.
LUBRICATION
POINT
FIGURE 3.10
3.3.4. TRACTOR LUBRICATION
(Continued From Previous Page)
7. Steering Tie Rod
Lubricate both ends of steering tie rod with a small
amount of SAE30 oil. See Figure 3.11.
LUBRICATE
COMPONENTS ON
UNDERSIDE OF
TRACTOR
%:-, BLADE
-_" X'_ENGAGEMENT
:LEVER
FIGURE 3.12
9. Park Brake Lever
Using general purpose grease, lubricate the park
brake lever mechanism pivot points, which are
located on the left hand underside of tractor. See
Figure 3.13. Mechanism with a thin coat of 30 wt.
motor oil.
LUBRICATE
BOTH ENDS
OF TIE ROD
FIGURE 3.11
8. Blade Engagement Mechanism
Using SAE30 oil, lubricate the blade engagement
mechanism pivot points, which are located on the
R.H. underside of tractor. See Figure 3.12.
PARK BRAKE
LEVER
LUBRICATE COMPONENTS
ON UNDERSIDE OF TRACTOR
FIGURE 3.13
10. Deck Lift Mechanism
Lubricate all wear and pivot points of the deck lift
3.4
SERVICE - ANNUALLY
Perform all maintenance as described in Section
"SERVICE - EVERY 25 OPERATING HOURS". Also
see service schedule.
3.4.1. ENGINE
1. Service engine according to engine owner's
manual.
16
Section 3 - MAINTENANCE
3.4 SERVICE - ANNUALLY
3.4.2. FUEL FILTER
1. Service fuel filter as instructed below, on COLD
ENGINE ONLY!
NOTE: It may be necessary to drain the fuel tank before
removing fuel filter to prevent spillage of gasoline.
2. Locate fuel filter. Remove hose clamps and fuel
hoses from both sides of fuel filter. See Figure 3.14.
FUEL TANK
\
FUEL FILTER
REMOVE HOSE
CLAMPS
FIGURE 3.14
3. Install new fuel filter part number 1-4359. See
Figure 3.15.
NEW FUEL FILTER
PART NUMBER !-4359 __%.
FIGURE 3.15
4. Fill fuel tank with fresh gasoline. Refer to engine
owner's manual for fuel specifications.
3.4.3. SPARK PLUG
Remove and replace engine spark plug. Refer to
engine owner's manual for correct replacement plug
and gap specifications.
3.4.4. HYDROSTATIC TRANSMISSION OIL
The hydrostatic transmission does not require
maintenance. If any problems arise return
immediately to an authorized Snapper dealer.
3.5. SAFETY INTERLOCK SYSTEM CHECKS
This machine is equipped with an electrical safety
interlock system that is provided for the safety of the
operator and others. All safety devices must be in place
and functioning properly before operating the machine.
Perform the following interlock system checks
periodically during the operating season. Contact your
authorized Snapper dealer if you have questions.
WARNING
DO NOT operate machine if any safety interlock or
safety device is not in place and functioning
properly. DO NOT attempt to defeat, modify or
remove any safety device.
ENGINE MUST NOT START IF:
1) Clutch/Brake Pedal not fully depressed OR,
2) Blade Engagement Lever in the "ON" blades
engaged position.
ENGINE SHOULD START IF:
1) Blade Engagement Lever in the "OFF" blades
disengaged position AND,
2) Clutch/Brake Pedal fully depressed.
ENGINE MUST BEGIN TO STOP IF:
1) Operator rises off of seat with Blade
Engagement Lever in "ON" blades engaged
position OR,
2) Operator rises off of seat with Clutch/Brake
Pedal not fully depressed.
IMPORTANT: Engine and blades will continue to run
if Operator becomes seated prior to engine coming
to a complete stop. After coming to a complete stop,
the Blade Engagement Lever must be moved to the
"OFF" position and the Clutch/Brake Pedal fully
depressed before engine can be restarted. Engine
and blades must come to a complete stop within 5
seconds after the operator rises off the seat or the
blade switch is moved to the "OFF" position.
17
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.1 ENGINE ADJUSTMENTS & REPAIR
Refer to the engine owner's manual for those
adjustments and/or repairs that can be made by the
owner.
4.2 MOWER DECK & COMPONENT ADJUSTMENTS
The following mower deck and component adjustments
and repairs can be made by the owner. However, if there
is difficulty in achieving these adjustments and repairs, it
is recommended that these repairs be made by an
authorized SNAPPER dealer.
I Blades must stop rotating in 5 seconds or less after I
blades have been turned off. DO NOT operate l
machine until blade brake has been adjusted and l
functioning properly. Contact your SNAPPER dealerl
for assistance.
4.2.1. BLADE BRAKE ADJUSTMENT
The blade brake when properly adjusted will stop
blade rotation in 5 seconds or less when the blade
engagement lever is moved to the OFF position.
DO NOT operate machine until blade brake has been
repaired and functioning properly. If blade stop time
can not be achieved with the adjustment procedure
described above, take machine immediately to an
authorized SNAPPER dealer.
FIGURE 4.1
38" DECK BLADE BRAKE ADJUSTMENT
The 38" deck requires no blade brake adjustment.
Blades must stop in 5 seconds or less after blades have
been turned off. If blades continue to rotate, contact your
authorized SNPPER dealer for assistance.
WARNING
33" DECK BLADE BRAKE ADJUSTMENT
1. Blade brake adjustment is made by turning the
adjustment nut on the threaded brake rod. The brake
is initially set with 1-3/16" of thread exposed beyond
the nut. See Figure 4.1. Verify this setting before
attempting any adjustments. To tighten the brake
(stop blade rotation quicker) turn the adjustment nut
clockwise - ONE TURN ONLY.
IMPORTANT: DO NOT over-tighten blade brake.
Tighten one turn and check function of brake. If blade
stop time remains over 5 seconds, turn adjustment
nut 1 to 2 turns clockwise. If blade stop time remains
over 5 seconds, DO NOT OPERATE machine.
Contact your SNAPPER dealer for assistance.
18
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool. If deck front to rear level is not
correct, this could cause blade belt problems.
4.2.2. BLADE BELT ADJUSTMENT- 33" DECK
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Move blade engagement lever down to "OFF". See
Figure 4.2
4. Place deck in mid cutting position.
5. Check front to rear level Refer to Section "33 DECK
LEVEL ADJUSTMENT (FRONT TO REAR)".
ENGAGEMENT
__ MOVE BLADE
LEVER TO "OFF"
8. (33" Deck) To adjust tension, remove extension rod
mounting bolt and nut. See Figure4.4.
9. Move extension rod to next hole towards rear of
deck and secure with mounting bolt and nut.
10. Measure extension spring with blade engagement
lever in the "ON" and "OFF" positions. See Figure 4.3.
Continue adjustment until tension is correct.
IMPORTANT: Blade brake function must be verified
after performing blade belt adjustment.
11. Check blade brake. Refer to Section "CHECK
BLADE BRAKE". Blades must stop rotating in 5
seconds or less when turned off.
LEAST TENSION
MOST TENSION
FIGURE 4.2
IMPORTANT: If deck front to rear level is not correct, this
could cause blade belt problems.
6. Move blade engagement lever to "ON".
7. Measure blade cable extension spring. The length of
the spring (x) should increase by 1" (+/-1/8"). See Figure
4.3.
BLADE CABLE
EXTENSION
SPRING
X + 1" +/- 1/8
/
ROD
NUT & BOLT
FIGURE 4.4
4.2.3. BLADE BELT ADJUSTMENT- 38" DECK
The blade belt on the 38" deck requires no tension
adjustment. If the belt becomes worn or damaged it must
be replaced. Refer to Section "BLADE BELT REMOVAL &
REPLACEMENT".
4.2.4. ADJUSTING MOWER BLADE - 33" DECK
(33" Decks Only; no adjustment for 38")
1. Select a point on the deck and mark for reference.
2. Mark blade tips as "A" and "B".
3. Rotate blade until blade tip "A" is at deck
reference mark
4. Measure the distance between deck lip and
blade tip. Note the measurement. See Figure 4.5.
(Continued on next page)
FIGURE 4.3
19
Section 4 - ADJUSTMENT & REPAIR
4.2.4. ADJUSTING MOWER BLADE- 33" DECK
(Continued from previous page)
\
\
MEASURE THE DISTANCE
BETWEEN DECK LIP AND
BLADE TIP
FIGURE 4.5
_iL WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.2.5. 33" DECK LEVEL ADJUSTMENT (SIDE TO SIDE)
NOTE: Adjust tire pressure, 12 P.S.I. front and rear,
before adjusting deck.
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Place a piece of angle iron under center rear of deck.
4. Remove hair pins and washers securing rear of deck
to sector plates. See Figure 4.7.
5. Slide sector off of pins and carefully lower deck onto
angle iron.
6. Rotate blade(s) until blade tips are at each side of
deck.
7. Measure distance from blade tip to floor on each side
of deck. Blade tips should be within 1/8" of each other for
the deck to be considered level.See Figure4.8.
SECTOR PLATE
HAIRPIN &
NOTE: On 33" decks, the measurement between the blade
tip and deck lip should be 5/16".
5. Repeat steps 2 and 3 with blade tip "B".
6. If measurement between blade tips and deck are
different and there is more than 1/16"difference between
blade tip measurements, adjust bladeas follows:
a. Loosen jam-nuts on blade bar.
b. Adjust jack screws "IN" or "OUT" until blade
tip measurements are within 1/16" of each other.
See Figure 4.6.
c. Tighten jam-nuts.
LOOSEN JAM NUTS, ADJUST
JACK SCREWS "IN" OR
"OUT" TO LEVEL BLADE WITH"7_
....... /t= \ ILt"
( ........ I= 'Yi2;A".U;3
L_-_':' ' _-o _ :_---_J
SIDE VIEW OF DECK
FIGURE 4.6
FIGURE 4.7
33" DECK SHOWN
SIDE TO SIDE VIEW
t f
TIPS TO FLOOR
FIGURE 4.8
8. If measurement differs more than 1/8", adjust as
follows:
a. Loosen front liftarm pivot bolton front of right siderail.
See Figure4.9.
LOOSEN PIVOT BOLT e_ \Y "/
LOOS EN SHOU LDER-- _i_,....._;_/_ _
BOLT __. _::_.../ e
AS REQUIRED
20
FIGURE 4.9
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.2.5. 33" DECK LEVEL ADJUSTMENT
(SIDE TO SIDE)
(Continued from previous page)
b. Loosen eccentric shoulder bolt.
c. Turn eccentric "UP" or "DOWN" as required to level
deck. See Figure 4.9.
d. Tighten eccentric bolt. Place sector plates back onto
rear lift arms and secure with washers and hairpins.
4.2.6. 33" DECK LEVEL ADJUSTMENT
FRONT TO REAR - SECTOR PLATES
1. Remove hair pins and washers securing sector
plates to rear lift arms. See Figure 4.10.
PLATES
33"DECK SHOWN
FRONT
X + 1/4" X
REAR
f
MEASURE FROM BLADE
TIPS TO FLOOR
FIGURE 4.11
4.2.7. 33" DECK LEVEL ADJUSTMENT
FRONT TO REAR - FRONT LIFT ROD
If the sector plates are in their lowest setting and proper
level cannot be obtained, adjust the front lift rod as
follows:
1. Move deck lift lever to #5 position.
2. Place a 2 x 4 wooden block on edge under front
center of deck.
3. Place a 3 x 3 wooden block under rear center of
deck.
4. Remove hair pins and washers securing sector
plates. Lower rear of deck onto 3 x 3 block.
5. Remove hair pin and washer securing front lift rod
to front lift arm. See Figure 4.12.
.LOWEST DECK
DECK
REMOVE HAIR PIN &
WASHER
FIGURE 4.10
2. Move sector plate as required to raise or lower deck.
NOTE: The deck should be set so that the rear of the deck
is 1/4" lower than the front. See Figure 4.11.
JAM
NUT
/
/
H_RPIN
WASHER
FRONTLIFTROD
FIGURE 4.12
6. Remove front lift rod and carefully rest front of deck
onto 2 x 4 block.
7. Loosen jam nut on front lift rod. See Figure 4.12.
8. Turn front lift rod hanger block until it can be
reinstalled into front liftarm without liftingdeck.
9. Secure liftrod to lift arm with washer and hair pin.
10. Place sector plates onto rear hanger brackets and
secure with washers and hair pins.
11. Raise deck and remove wooden blocks.
12. Repeat steps for front to rear level until levelness
is acquired.
21
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.2.8. 38" DECK LEVEL ADJUSTMENT
(SIDE TO SIDE)
NOTE: Before adjusting deck, bring tire pressure to
proper P.S.I.; front 12 P.S.I., rear 12 P.S.I..
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Place a 2-1/2" tall block under the front of the deck
centered between the front liftarms. See Figure 4.13.
FRONT OF TRACTOR
38" DECK
FRONT LIFT
ROD
\
HAIR PIN
FIGURE 4.14
9. If the difference is less than 1/8", go to next section,
Front to rear level. If the difference is more than 1/8",
adjust as described in the following steps.
10. Loosen the front adjuster nut until adjuster moves
freely. Then tighten the nut until the adjuster moves only
when moderate force is applied to one side of the deck.
See Figure 4.15.
2-1/2" TALL BLOCK
CHECK
\
\
1-3/4"TALL
BLOCK
FIGURE 4.13
4. Place a 1-3/4" tall block under the rear of the deck in
the center. See Figure 4.13.
5. Position blades as shown and lower deck onto
blocks. See Figure 4.13.
6. Disconnect the front lift rod and the rear hanger
plates. See Figure 4.14.
7. Put the lift lever in the 3rd position from low cut.
8. Measure the distance from each blade tip to the
floor. The measurements should be within 1/8" of each
other. (Factory setting)
FRONT OF TRACTOR
• ADJUSTER NUT
FIGURE 4.15
11. Adjust the side to side level of the blade tips by
moving one side of the deck up or down as needed to
obtain 1/8" or less side to side deck level.
12. After leveling deck, retighten the adjuster nut using
30 to 40 ft. Ibs.
13. Attach the rear hanger plates to the hole that most
closely aligns with the pin on the deck lift bracket. Secure
with washer and hair pin.
14. Adjust the swivel on the front lift rod until it lines up
with the hole in the front lift bracket. (Make sure the lift
rod is at the top of the slot in the deck bracket) Secure
with hair pin.
22
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.2.9. 38" DECK LEVEL ADJUSTMENT
(FRONT TO REAR)
1. Position the blades as shown. See Figure 4.16.
FRONT OF TRACTOR
11,
REAR TO FRONT VIEW OF DECK
X
I
1
4.3
TRACTOR DRIVE COMPONENTS
4.3.1. BRAKE ADJUSTMENT
When adjusted properly, the brake should stop the
tractor in approximately 6 feet or less from top speed.
Drive the machine at maximum forward speed and
apply the brake. If stopping distance is greater than 6
feet. brake adjustment is required.
1. Turn engine "OFF" Remove key.
2. Locate brake adjustment nut underneath the left side
at the rear of tractor. See Figure 4.18.
3. Turn nut 1 turn clockwise to increase braking
action. DO NOT over tighten brake adjustment.
4. Start engine and test brake.
5. Continue adjustment as described above until
proper brake function is achieved
L ANGLE IRON 1
FIGURE 4.17
X - 1/8"
FIGURE 4.16
2. Measure the distance from the left front blade tip to
the ground and from the right rear blade tip to the ground.
The front left blade tip should be between 1/8" and 3/8"
higher than the right rear (factory setting). If it is between
1/8" and 3/8" you arefinished with adjustment.
3. If it is not within specifications, adjust by raising or
lowering the front of the deck using the swivel on the front
lift rod. Turning the swivel clockwise will raise the front of
the deck. Turning the swivel counterclockwise will lower
the front of the deck.
NOTE: The deck should be set so that the rear of the deck
is 1/4" lower than the front. See Figure 4.17.
ROTATE ADJUSTING NUT CLOCKWISE TO
INCREASE BRAKING OR COUNTER
CLOCKWISE TO DECREASE BRAKING
FIGURE 4.18
23
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.3.2. STEERING ADJUSTMENT
Should excessive "Play" be noted in the steering,
adjust as follows:
1. Turn engine "OFF". Remove key.
2. From left side of tractor, locate the steering sector
below fuel tank. See Figure 4.19.
4. Turn the neutral adjustment nut 1/4 turn clockwise
to reduce FORWARD creep. Turn the adjustment nut
1/4 turn counter clockwise to reduce Reverse creep.
Only turn the adjustment nut in 1/4 turn increments.
5. Check for creep in neutral. Start engine. Move
speed control lever to rear edge of the neutral detent.
Machine should not move. If further adjustment is
required, stop engine and repeat Step 4.
NEUTRAL
ADJUSTMENT
NUT
TURN NUT CLOCKWISE TO
REDUCE FORWARD CREEP
ROTATE TO ,,
REDUCE ' PLAY _.
MOUNTING NUT
FIGURE 4.19
3. Loosen the eccentric mounting nut and rotate the
eccentric clockwise until steering "Play" is reduced.
See Figure 4.19.
4. Tighten eccentric mounting nut.
4.3.3. SHIFTER ADJUSTMENT
The shift linkage is set at the factory and should not
require further adjustment. The shifter is adjusted
properly when the speed control lever can be placed
at rear edge of the neutral detent and the tractor
remains absolutely stationary. If motion is detected,
neutral adjustment will be required. DO NOT operate
a machine that creeps when shifted to neutral.
1. Stop engine. Remove key.
2. Move speed control lever to rear edge of neutral
detent and hold firmly.
3. Locate neutral adjustment nut underneath the
right rear of the tractor. See Figure 4.20
FIGURE 4.20
I WARNING
DO NOT adjust shift linkage with engine running. The
adjustment requires hands to be close to rotating
parts. STOP engine. REMOVE key.
24
Section 4 - ADJUSTMENT & REPAIR
4.3.4. TRACTION DRIVE BELT ADJUSTMENT
Should a gradual loss of traction be noticed, it may be
necessary to adjust the traction drive belt tension,
Adjust as follows:
1. Move tractor to a firm, level surface,
2. Turn engine"OFF", Remove key.
3. Remove mowing deck,
4. Remove the traction drive belt stationary idler
mounting bolt, See Figure 4,21,
5. Move the stationary idler one hole towards leftside
of tractor for more belt tension,
NOTE: Note the orientation of belt guide and make certain
it remains in the same orientation after moving idler.
NOTE: Should less tension be required move stationary
idler towards right side of tractor. See Figure 4.21.
6. Secure stationary idler with mounting bolt.
7. Place spark plug wire onto spark plug. Set park
brake. Start engine.
8. Visually inspect traction drive belt for movement.
When properly adjusted, the traction drive belt should
not have any movement or rotation with the engine
running and park brake engaged.
9. Should movement be present, readjust traction
drive belt to release belt tension as described in
previous instructions.
BELT GUIDE
STATIONARY
MOUNTING BOLT
I
$
MOUNTING
BRACKET
MORE
TENSION
LESS
I TENSION
MORE TENSION
LESS TENSION
MOUNTING BRACKET
BELT GUIDE - MAKE CERTAIN
BELT GUIDE ORIENTATION 18
MAINTAINED.
STATIONARY IDLER
MOUNTING
BOLT
FIGURE 4.21
25
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.
4.4 MOWER BLADE SERVICE
4.4.1. (STANDARD) BLADE WEAR LIMITS
All mower blades should be checked for excessive wear
and damage before each use. See Figure 4.22.
NOTCH FORMING "_ W
__/_ BLADE
. -'_/_"_l_ WEAR LIMIT.
___ CUTTING EDGE
._.__ WORN,
DANGEROUS CONDITION! DO
NOT USE ON MOWER!
FIGURE 4.22
4.4.2. (NINJA) BLADE WEAR LIMITS
The ninja recycling blade requires more frequent service
intervals than standard blades. Check for excessive wear
and damage before each use. See Figure 4.23.
. ,;"¢.
4.4.3. (STANDARD) BLADE SHARPENING
Blades should be kept sharp at all times. When the
blades are dull, cut grass will be ragged and lawn will
usually turn brown. Sharpen standard blades as follows:
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Remove mowing deck from tractor.
4. Remove mower blade(s).
5. If a blade is in good condition, sharpen cutting edge
at an angle of 22 to 28 degrees. DO NOT sharpen
beyond existing cutting edge. Replace blades not ingood
condition. See Figure 4.24.
STANDARD BLADE
_ CUTTING EDGE
FIGURE 4.24
4.4.4. (NINJA) BLADE SHARPENING
The Ninja recycling blades requires more frequent
service intervals than standard blades. When the blades
are dull, cut grass will be ragged and lawn will usually
turn brown. Sharpen standard blades as follows:
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Remove mowing deck from tractor.
4. Remove mower blade(s).
5. Sharpen all cutting edges of the Ninja recycling
blade at an angle of 22 to 28 degrees for optimum
performance. See Figure 4.25.
: ""_" "_ ._I "J--NEW
r
AR LIMIT. (CRACKS
OR NOTCHES BEGIN
TO APPEAR)
I
DANGEROUS CONDITION!
DO NOT USE ON MOWER!
FIGURE 4.23
BLADE
22° TO 28°
BLADE TIP
FIGURE 4.25
26
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.
4.4.5. 33" MOWER BLADE REPLACEMENT
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Remove mowing deck from tractor.
4. Position deck on its left side to access blade.
5. Remove blade mounting bolts, nuts and washers.
See Figure 4.26.
NUT
_F SPINDLE
ASSEMBLY
BLADE _
(2 REQUI_ CONE
MOUNTING
I_: NUT
FIGURE 4.27
BLADE MOUNTING
BOLTS
FIGURE 4.26
6. Install new blade onto blade mounting bar.
7. Torque 30 to 40 ft Ibs.
4.4.6. 38" MOWER BLADE REPLACEMENT
1. Move tractor to a firm, level surface.
2. Turn engine "OFF". Remove key.
3. Remove mowing deck from tractor.
4. Position deck to access blade.
5. Remove blade mounting nut and cone washer from
each blade. See Figure 4.27.
6. Install new blades.
7. Torque 70 to 90 ft Ibs.
4.4.7. TRACTION DRIVE BELT REPLACEMENT
Mower Deck Removal
It is necessary to remove deck in order to replace
belts. Remove deck as follows:
1. Place tractor on a firm. level surface such as
a driveway or garage floor and set the park brake.
2. Turn eng ne "OFF". Remove key.
3. Lower the deck to lowest setting.
4. Disconnect the deck lift rod from the front lift
arm. See Figure 4.28.
FRONT LIFT
ARM
FRONT
ROD
WASHER "_HAIR PIN
FIGURE 4.28
27
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.4.7. TRACTION DRIVE BELT REPLACEMENT
Mower Deck Removal
(Continued from previous page)
5. Remove hair pins from the front deck hanger
rod. See Figure 4.29.
30" & 33" BELT GUIDES SHOWN
ENGINE PULLEY
BOTTOM GROOVE
FIGURE 4.30
11. Slide deck back and disconnect spring from
tension idler.
12. Pull deck from under tractor from R.H. side.
Traction drive belt removal
1. Remove two belt guide mounting bolts from each
side of tractor frame. See Figure 4.31.
(_ _ MOUNTING
"_ _ BELT GUIDE
BOLTS (2 EACH
SIDE_
•
FRONT DECK
HANGER ROD
FRONT
LIFT ARM H_R PIN
FIGURE 4.29
6. Hold front of deck "UP" and slide the front deck
hanger rod to the right and out then lower the front of
deck to the ground.
7. Remove hair pin and flat washer from rear deck
hanger bracket on both sides of tractor.
8. Make note of hole used in sector plates.
9. Slide sector plates off of rear deck hanger ................................................
brackets.
10. Slide deck forward. RIGHTREAR
Remove deck drive belt from engine pulley bottom TRACTOR
groove. See Figure 4.30. FRAME
2. Slide belt guide assembly to the rear and remove.
3. Disconnect traction belt idler pulley spring from
tractor frame. See Figure 4.32.
FIGURE 4.31
SPRING FROM
FRAME
28
FIGURE 4.32
Section 4 - ADJUSTMENT & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.4.7. TRACTION DRIVE BELT REPLACEMENT
(Continued from previous page)
4. Remove mounting nuts that secure the traction
drive belt idler tension pulley and stationary idler
pulleys. See Figure 4.33.
STATIONARY
IDLER
PULLEYS _ TRANSMISSION
PULLEY
Traction drive belt replacement
1. Place new traction drive belt over transmission
pulley and span to engine pulley.
2. Place belt into top groove of engine pulley.
3. Route belt through stationary and tension idlers.
See Figure 4.36.
TRANSMISSION
DRIVE BELT PULLEY
IDLER
I STATIONARY IDLER
TENSION
L--ENGINE --IDLER
PULLEY PULLEYS
PULLEY
VIEW FROM UNDERNEATH TRACTOR
FIGURE 4.33
5. Remove traction drive belt from engine pulley top
groove. See Figure 4.34.
REMOVE
FROM PULLEY
FIGURE 4.35
NOTE: When installing a new belt, make certain the
stationary idler is mounted in the hole closest to the L.H.
side of the tractor. See Figure 4.35.
4. Make certain belt is within belt guides of idlers.
5. Attach tension idler spring to tractor frame. See
Figure 4.36.
6. Reinstall mower deck _nreverse order of removal.
RIGHT REAR
TRACTOR FRAME
CONNECT SPRING
TO FRAME
FIGURE 4.34
6. Remove belt from center belt guide.
7. Pull belt until it can be removed from transmission
pulley.
FIGURE 4.36
29
Section 4 - ADJUSTMENT & REPAIR
_, WARNING _k
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP blade.
STOP engine. Set brake. Remove key. Remove spark
plug wire from spark plug and secure wire away from
spark plug. Engine and components can be extremely
hot. Avoid burns by allowing engine and components
sufficient time to cool.
4.4.8. BLADE BELT REMOVAL & REPLACEMENT
33" Deck Drive Belt
1. Place tractor on a firm levelsurface.
2. Turn engine "OFF". Remove key.
3. Remove mower deck
4. Remove deck belt idler pulley and spindle pulley
cover, See Figure 4.37.
REMOVE
SPINDLE
PULLEY
COVER
38" Deck Drive Belt
1. Place tractor on a firm level surface.
2. Turn engine "OFF". Remove key.
3. Remove mower deck.
4. Remove spindle belt guard and tension idler. See
Figure 4.39.
GUARD
FIGURE 4.37
5. Remove old belt.
6. Replace with new belt in reverse order.
7. Adjust idler pulley belt guide if necessary to obtain
1/16" clearance between belt and belt guide. See
Figure 4.38.
SPINDLE PULLEY
FIGURE 4.39
5. Remove old belt.
6. Replace with new belt in reverse order.
7. Adjust idler pulley belt guide if necessary to obtain
1/16" clearance between belt and belt guide. See
Figure 4.40.
-- ,, _ TENSION
1/16 I_ IDL R
CLEARANCE . _1, _1 E
_
..................
FIGURE 4.40
FIGURE 4.38
30