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Table of Contents
Maintenance Instructions__________ 52
MAINTENANCE SCHEDULE CHART _______ 52
IMPORTANT TIPS FOR CARE
OF THE KOHLER ENGINE _______________ 53
Fuel System _________________________ 53
Starting/Stopping_____________________ 53
Cooling System - MT, MTEFI____________ 53
Cooling System - MTL _________________ 53
Air Cleaner System ___________________ 53
Oil _________________________________ 54
LUBRICATION _________________________ 54
Engine Oil ___________________________ 54
Engine Break-In Oil __________________ 54
Checking Engine Crankcase Oil Level ___ 54
Changing Engine Crankcase Oil/Oil Filter _55
Grease Fitting and Oil Point Lubrication __ 55
Mower Deck Gearbox Lubrication _______ 58
DSD52 or DSD62 Mower Deck Lubrication 58
Tractor PTO Gearbox Lubrication _______ 59
Checking Gearbox Oil Level ___________ 59
Changing Gearbox Oil ________________ 59
Gear Axle Lubrication _________________ 59
Hydrostatic Transmission Fluid _________ 60
Checking Hydrostatic
Transmission Fluid Level ______________ 60
Changing Hydrostatic Transmission Fluid _60
CLEANING ____________________________ 61
Engine Air Cleaner System _____________ 61
Turbine Precleaner __________________ 62
Donaldson Radialseal™ Air Cleaner _____ 62
Engine Cooling System - MT20 and MTEFI 64
Air Intake System ___________________ 64
Cylinder Head Cooling Fins ____________ 64
Engine Cooling System - MTL __________ 64
Radiator Screen and Cooling Fins ______ 64
Flushing Radiator and Changing Coolant _65
Grass Buildup in Mower Housing________ 65
GHS Blower _________________________ 66
GHS Exhaust Screen __________________ 66
Hydrostatic Transmission Cooling Fins __ 67
CHECKING/SERVICING _________________ 67
Engine Cooling System - MTL __________ 67
Coolant Level ______________________ 67
Security of Air Filtration Components ____ 68
Battery______________________________ 68
Electrolyte Level ____________________ 68
Cleaning the Terminals _______________ 69
Charging the Battery _________________ 69
Tire Pressure ________________________ 69
Wheel Bolt Torque ____________________ 69
Sharpen Mower Blades ________________ 69
Drive Belts __________________________ 70
Mower Deck Gearbox Oil Seals _________ 71
Spark Plugs _________________________ 71
Ignition Wires________________________ 71
Fuel Lines and Clamps ________________ 71
Radiator Hoses and Clamps - MTL ______ 71
Engine Starter _______________________ 71
Blade Brake Action ___________________ 71
PTO U-Joints ________________________ 71
REPLACING/REPAIRING ________________ 72
Drive Belts __________________________ 72
Engine PTO Drive Belt _______________ 73
Jackshaft Drive Belt _________________ 74
GHS Blower Drive Belt _______________ 75
Hydrostatic Ground Drive Belt _________ 76
Fuel Filter - Model MT and MTL _________ 77
Fuel Filter - MTEFI ____________________ 77
Blade Overload Shear Bolts ____________ 77
PTO Shear Pin _______________________ 78
Mower Blades _______________________ 78
Mower Deck Gearbox Replacement______ 79
GHS Blower Assembly ________________ 80
GHS Blower Assembly Removal _______ 80
Blower Wheel Removal ______________ 80
Blower Wheel Installation _____________ 81
GHS Blower Assembly Installation ______ 81
ADJUSTMENTS________________________ 82
Safety Switches ______________________ 82
Tail Wheel Bearing Preload ____________ 82
Steering Levers ______________________ 82
Blade Clutch (PTO) ___________________ 83
Clutch Engagement/Belt Tension _______ 83
Clutch Disengagement/Brake Action ____ 84
Stop Block Eccentric Adjustment _______ 85
Clutch Idler Pulley Travel Adjustment ____ 85
Blade Brake Band Adjustment _________ 85
Transmission Control _________________ 86
Set Forward Travel Limit (Stop) ________ 86
Steering Lever End Play Adjustment ____ 87
Neutral Function Adjustment __________ 87
Straight Ground Travel Adjustment _____ 88
Forward Speed Control Friction Lock ____ 88
Tilt-Up Deck Adjustable Stop ___________ 89
Carburetor - MT ______________________ 89
Engine Idle Adjustment _______________ 89
Carburetor - MTL _____________________ 90
Low Idle Speed (RPM) Adjustment ______ 90
GHS “Full” Signal Horn
with Grass-Pak
®
Switch _______________ 91
Adjustment
(When Horn Sounds at Wrong Time)_____ 91