1998 S/N 21329 - Walker Mowers

Table of Contents
Maintenance Instructions __________ 44
MAINTENANCE SCHEDULE CHART _______ 44
IMPORTANT TIPS
FOR CARE OF THE KOHLER ENGINE _____ 45
Fuel System _________________________ 45
Starting/Stopping _____________________ 45
Cooling System ______________________ 45
Air Cleaner System ___________________ 45
Oil _________________________________ 45
LUBRICATION _________________________ 46
Engine Oil ___________________________ 46
Engine Break-In Oil___________________ 46
Checking Engine Crankcase Oil Level ____ 46
Changing Engine Crankcase Oil/Oil Filter _46
Grease Fitting and Oil Point Lubrication __ 47
Mower Deck Gearbox Lubrication _______ 50
DSD52 or DSD62 Mower Deck Lubrication 50
Tractor PTO Gearbox Lubrication _______ 51
Checking Gearbox Oil Level ____________ 51
Changing Gearbox Oil ________________ 51
Gear Axle Lubrication _________________ 51
Hydrostatic Transmission Fluid _________ 52
Checking Hydrostatic
Transmission Fluid Level ______________ 52
Changing Hydrostatic Transmission Fluid__ 52
CLEANING ____________________________ 53
Engine Air Cleaner System _____________ 53
Turbine Precleaner ___________________ 54
Donaldson Radialseal
Air Cleaner (Primary) _________________ 54
Kohler Air Cleaner (Secondary) _________ 56
Foam Precleaner __________________ 56
Paper Element ____________________ 56
Engine Cooling System ________________ 57
Air Intake System ____________________ 57
Cylinder Head Cooling Fins ____________ 57
Grass Buildup in Mower Housing________ 58
Non-Tilting Decks ____________________ 58
Tilt-Up Decks _______________________ 58
GHS Blower _________________________ 59
GHS Exhaust Screen __________________ 59
Hydrostatic Transmission Cooling Fins __ 60
CHECKING/SERVICING _________________ 60
Security of Air Filtration Components ____ 60
Battery______________________________ 60
Electrolyte Level _____________________ 60
Cleaning the Terminals ________________ 61
Charging the Battery __________________ 61
Tire Pressure ________________________ 61
Sharpen Mower Blades ________________ 61
Drive Belts __________________________ 62
Mower Deck Gearbox Oil Seals _________ 63
Spark Plugs _________________________ 63
Fuel Lines and Clamps ________________ 63
Engine Starter _______________________ 63
Blade Brake Action ___________________ 63
REPLACING/REPAIRING ________________ 63
Drive Belts __________________________ 63
Engine PTO Drive Belt ________________ 65
Jackshaft Drive Belt __________________ 66
GHS Blower Drive Belt ________________ 67
Hydrostatic Ground Drive Belt __________ 68
Fuel Filter ___________________________ 69
Blade Overload Shear Bolts ____________ 69
Mower Blades _______________________ 70
Mower Deck Gearbox Replacement______ 70
GHS Blower Assembly ________________ 71
GHS Blower Assembly Removal ________ 71
Blower Wheel Removal _______________ 72
Blower Wheel Installation ______________ 72
GHS Blower Assembly Installation _______ 72
ADJUSTMENTS ________________________ 73
Safety Switches ______________________ 73
Seat Switch ________________________ 73
FSC Neutral-Park Switch ______________ 73
PTO Switch_________________________ 73
Tail Wheel Bearing Preload_____________ 73
Blade Clutch (PTO) ___________________ 74
Clutch Engagement/Belt Tension ________ 74
Clutch Disengagement/Brake Action _____ 75
Stop Block Eccentric Adjustment ________ 76
Clutch Idler Pulley Travel Adjustment_____ 76
Blade Brake Band Adjustment __________ 76
Transmission Control _________________ 77
Set Forward Travel Limit (Stop) _________ 77
Steering Lever End Play Adjustment _____ 78
Neutral Function Adjustment ___________ 78
Straight Ground Travel Adjustment ______ 79
Forward Speed Control Friction Lock ____ 79
Tilt-Up Deck Adjustable Stop ___________ 80
Carburetor __________________________ 80
Engine Idle Adjustment _______________ 80
GHS “Full” Signal Horn
with Grass-Pak ® Switch _______________ 81
Troubleshooting
(When Horn Fails to Operate) __________ 81
Adjustment
(When Horn Sounds at the Wrong Time) __ 82
ELECTRICAL SYSTEM __________________ 82
Circuit Breakers______________________ 82
Wiring Diagram ______________________ 83
Operator’s Notes ___________________ 84
Warranty___________________________ 87