Snapper Lawn Mower LT145H38GBV User Manual

Safety Instructions & Operator’s Manual for  
LAWN TRACTOR  
HYDROSTATIC DRIVE  
SERIES G  
MODELS  
HYDROSTATIC DRIVE  
LT145H33GBV  
LT145H38GBV  
LT150H38GKV  
WLT145H38GBV  
MODEL NUMBER EXPLANATION  
LT  
145  
H
38  
G
B
V
MODEL DESIGNATION  
ENGINE HP  
DRIVE SYSTEM TYPE  
CUTTING WIDTH  
ENGINE TYPE  
ENGINE MODEL  
SERIES DESIGNATION  
LT/WLT – Lawn Tractor Model Designation  
145 - 14.5 HP, 150 – 15.0 HP Engine Horse Power  
H – Hydrostatic Transmission  
38 – 38” Cutting Width Mower  
G – Series Designation  
B – Briggs & Stratton, K - Kohler Engine  
V – Over Head Valve Type Engine  
33 – 33” Cutting Width Mower  
Thank you for buying a SNAPPER product! Before operating the Lawn Tractor, read and follow the  
“IMPORTANT SAFETY INSTRUCTIONS” on pages 2 & 3, 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!  
COPYRIGHT © 2000  
SNAPPER INC.  
ALL RIGHTS RESERVED  
MANUAL No. 7-4025 (I.R. 9/19/00)  
IMPORTANT SAFETY INSTRUCTIONS  
PREPARATION  
(Continued From Previous Page)  
OPERATION  
(Continued From Previous Column)  
7. Keep people and pets out of mowing area.  
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.  
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. DO NOT operate engine in enclosed areas.  
Engine  
exhaust  
gases  
contain  
carbon  
9. Make sure all safety decals are clearly legible.  
Replace if damaged.  
monoxide, a deadly poison.  
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.  
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.  
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.  
4. Check brakes frequently; adjust, repair or  
replace as needed.  
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.  
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.  
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.  
3
TABLE OF CONTENTS  
IMPORTANT SAFETY INSTRUCTIONS..........2 - 3  
SECTION 4 -  
ADJUSTMENTS & REPAIR........................... 17-32  
Engine Adjustments & Repair..........................17  
Mower Deck & Component Adjustments........17  
Blade Brake Adjustment...................................17  
33” Deck Blade Brake Adjustment ...............17  
38” Deck Blade Brake Adjustment ...............17  
Blade Belt Adjustment (33” Deck) ...................18  
Blade Belt Adjustment (38” deck)....................18  
Adjusting Mower Blade (33” Deck).............18-19  
33” Side To Side ...........................................18-19  
(Deck Level Adjustment)  
TABLE OF CONTENTS........................................4  
SECTION 1 - FAMILIARIZATION .........................5  
Components ........................................................5  
Controls ................................................................5  
SECTION 2 -  
OPERATING INSTRUCTIONS ........................6-11  
Pre-start Checklist ..............................................6  
Operator’s Seat Adjustment ..............................6  
Starting & Stopping Engine................................7  
Starting & Stopping Wheel Drive .......................8  
Starting & Stopping Mower Blades................ 8-9  
Parking Brake.......................................................9  
Cutting Height Adjustment .................................9  
Rolling Tractor With Engine Off .......................10  
Reverse Lockout Mechanism ...........................11  
33” Front To Rear Sector Plates ......................20  
(Deck Level Adjustment)  
33” Front To Rear Front Lift Rod .....................20  
(Deck Level Adjustment)  
38” Side To Side ................................................21  
(Deck Level Adjustment)  
38” Front To Rear..............................................22  
(Deck Level Adjustment)  
SECTION 3 -  
Brake Adjustment - HYDRO DRIVE..................22  
Steering Adjustment .........................................23  
Shifter Adjustment ............................................23  
Traction Drive Belt Adjustment........................24  
Mower Blade Service ...................................25-26  
Blade Wear Limits ..........................................25  
Mower Blade Sharpening ..............................25  
Mower Blade Replacement.......................25-26  
Traction Drive Belt Removal/Replace.........26-28  
Blade Belt Removal & Replacement................29  
33” Deck Drive Belt ........................................29  
38” Deck Drive Belt ........................................29  
Battery Service .............................................30-31  
MAINTENANCE INSTRUCTIONS .................12-16  
Service - After First 5 Hours ........................12  
Change Engine Oil..........................................12  
Check Blade Brake .........................................12  
Check Mower Blade.................................. 12-13  
Check Deck Drive Belt ...................................13  
Service – Every 25 Operating Hours .........13  
Mower Components.......................................13  
Check Blade Brake .........................................13  
Lubrication (Tractor)................................ 14-15  
Front Wheel Bearings ....................................14  
Axle Spindles ..................................................14  
Clutch/Brake Pivot..........................................14  
Steering Sector Gear......................................14  
Steering Shaft .................................................14  
Steering Drag Link..........................................14  
Steering Tie Rod.............................................15  
Blade Engagement Mechanism.....................15  
Park Brake Lever ............................................15  
Deck Lift Mechanism......................................15  
Service - Annually..................................... 15-16  
Engine .............................................................15  
Fuel Filter................................................... 15-16  
Spark Plug.......................................................16  
Hydrostatic Transmission Oil........................16  
AVAILABLE ACCESSORIES..................................32  
SECTION 5 -  
ELECTRICAL SYSTEM...................................... 33  
Schematic - Briggs & Stratton..........................33  
Schematic - Kohler............................................33  
TROUBLESHOOTING GUIDE ...................... 34-35  
MAINTENANCE SCHEDULE ............................. 36  
MAINTENANCE PARTS..................................... 36  
WARRANTY .................................................... 37  
PRIMARY MAINTENANCE............................ 38-41  
4
Section 1 - FAMILIARIZATION  
CONTROL PANEL  
FAST  
PARK  
BRAKE  
LEVER  
CHOKE  
SLOW  
CLUTCH/BRAKE  
PEDAL  
DOWN  
KEY  
ENGINE SPEED  
CONTROL  
CUTTING HEIGHT  
ADJUSTMENT LEVER  
OPERATOR’S  
SEAT  
STEERING  
WHEEL  
SEAT  
ADJUSTMENT  
KNOB  
SPEED  
CONTROL  
LEVER  
DASHBOARD  
CONTROLS  
FUEL TANK  
(UNDER HOOD)  
BATTERY  
(UNDER SEAT)  
HOOD  
OVERRIDE  
LEVER  
BLADE  
ENGAGEMENT  
LEVER  
HEADLIGHTS  
DISCHARGE DEFLECTOR  
MOWING DECK (33” SHOWN)  
ENGINE  
FIGURE 1.1  
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.  
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.  
CONTROLS  
Specific details involving the engine are found in the  
separate Engine Owner’s Manual.  
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.  
5
Section 2 - OPERATING INSTRUCTIONS  
2.1 PRE-START CHECKLIST  
Make the following checks and perform service as  
required before each start-up.  
FUEL TANK  
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.  
TIGHTEN CAP  
AFTER  
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.  
FILLING TANK  
SAFE  
LEVEL  
AREA  
FIGURE 2.2  
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.  
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.  
LOOSEN ADJUSTING  
KNOBS TO ADJUST  
SEAT  
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”.  
FIGURE 2.3  
6
Section 2 - OPERATING INSTRUCTIONS  
2.3 STARTING & OPERATION  
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.  
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: 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.  
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.  
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.  
2. Push blade engagement lever down to the "OFF"  
position. See Figure 2.4.  
BLADE  
ENGAGEMENT  
LEVER  
CHOKE  
LIGHT  
POSITION  
SWITCH  
FAST  
OFF  
PUSH BLADE  
ENGAGEMENT LEVER  
DOWN TO “OFF” TO  
SLOW  
START ENGINE  
FIGURE 2.4  
ENGINE  
SPEED  
CONTROL  
3. Depress the clutch/brake pedal fully. See Figure 2.5.  
4. Move speed control lever to neutral.  
KEY  
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.  
FIGURE 2.6  
CLUTCH/BRAKE  
PEDAL  
WARNING  
DO NOT leave machine with engine running. Stop  
engine. Stop blade. Set parking brake. Remove key.  
PARK BRAKE  
LEVER  
DOWN  
PUSH PEDAL ALL THE  
WAY DOWN TO START  
ENGINE  
FIGURE 2.5  
7