Walker MDD (20.9 HP) Owner's Manual page 4

Table of Contents
Maintenance Instructions
MAINTENANCE SCHEDULE CHART _______ 46
IMPORTANT TIPS FOR CARE
OF THE KUBOTA ENGINE _______________ 47
Fuel System _________________________ 47
Starting/Stopping _____________________ 47
Cooling System ______________________ 47
Air Cleaner System ___________________ 47
Oil _________________________________ 47
LUBRICATION _________________________ 48
Engine Oil ___________________________ 48
Engine Break-In Oil __________________ 48
Checking Engine Crankcase Oil Level ___ 48
Changing Engine Crankcase Oil/Oil Filter _ 48
Grease Fitting and Oil Point Lubrication __ 49
Mower Deck Gearbox Lubrication _______ 52
DSD52 or DSD62 Mower Deck Lubrication 52
Tractor PTO Gearbox Lubrication _______ 53
Checking Gearbox Oil Level ___________ 53
Changing Gearbox Oil ________________ 53
Gear Axle Lubrication _________________ 53
Hydrostatic Transmission Fluid _________ 54
Checking Hydrostatic
Transmission Fluid Level ______________ 54
Changing Hydrostatic Transmission Fluid _ 54
CLEANING ____________________________ 55
Engine Air Cleaner System _____________ 55
Turbine Precleaner __________________ 56
Donaldson Radialseal™ Air Cleaner _____ 56
Engine Cooling System ________________ 58
Radiator Screen and Cooling Fins ______ 58
Flushing Radiator and Changing Coolant _ 58
Grass Buildup in Mower Housing________ 58
GHS Blower _________________________ 59
GHS Exhaust Screen __________________ 60
Hydrostatic Transmission Cooling Fins __ 60
CHECKING/SERVICING _________________ 60
Engine Cooling System ________________ 60
Coolant Level ______________________ 60
Fan Belt Tension ____________________ 61
Security of Air Filtration Components ____ 61
Battery______________________________ 61
Electrolyte Level ____________________ 61
Cleaning the Terminals _______________ 61
Charging the Battery _________________ 62
Tire Pressure ________________________ 62
Sharpen Mower Blades ________________ 62
Drive Belts __________________________ 63
Mower Deck Gearbox Oil Seals _________ 63
Fuel Lines and Clamps ________________ 64
Radiator Hoses and Clamps ____________ 64
Engine Valve Clearance________________ 64
__________ 46
Fuel Injection Nozzle Pressure__________ 64
Fuel Valve Solenoid___________________ 64
Blade Brake Action ___________________ 65
REPLACING/REPAIRING ________________ 65
Drive Belts __________________________ 65
Engine PTO Drive Belt _______________ 67
Jackshaft Drive Belt _________________ 68
GHS Blower Drive Belt _______________ 69
Hydrostatic Ground Drive Belt _________ 70
Engine Fan Belt ____________________ 71
Fuel Filter ___________________________ 72
Blade Overload Shear Bolts ____________ 72
PTO Shear Pin _______________________ 73
Mower Blades _______________________ 73
Mower Deck Gearbox Replacement______ 74
GHS Blower Assembly ________________ 75
GHS Blower Assembly Removal _______ 75
Blower Wheel Removal ______________ 75
Blower Wheel Installation _____________ 76
GHS Blower Assembly Installation ______ 76
Replacing Fuel Valve Solenoid _________ 76
ADJUSTMENTS ________________________ 77
Safety Switches ______________________ 77
Tail Wheel Bearing Preload ____________ 77
Steering Levers ______________________ 77
Blade Clutch (PTO) ___________________ 78
Clutch Disengagement/Brake Action ____ 78
Clutch Engagement/Belt Tension _______ 78
Transmission Control _________________ 79
Set Forward Travel Limit (Stop) ________ 79
Steering Lever End Play Adjustment ____ 80
Neutral Function Adjustment __________ 80
Straight Ground Travel Adjustment _____ 80
Forward Speed Control Friction Lock ____ 81
Tilt-Up Deck Adjustable Stop ___________ 81
Fuel Valve Solenoid Linkage ___________ 81
GHS "Full" Signal Horn
®
with Grass-Pak Switch _______________ 82
Troubleshooting
(When Horn Fails to Operate) __________ 82
ELECTRICAL SYSTEM __________________ 83
Circuit Breakers ______________________ 83
Wiring Diagram - Model MDD ___________ 84
Maintenance And Service
Record Sheet
_______________________ 85
Operator's Notes
Warranty
___________________________ 87
___________________ 86