Maintenance Instructions
42
MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MS
Service Item
Daily
25
Hours
50
Hours
100
Hours
Yearly
Every
2 Years
Ref.
Page
Check Engine Crankcase Oil Level x 44
Check/Clean Engine Air Cooling System* x 53
Clean Grass Buildup Under Deck x 54
Clean GHS Exhaust Screen* x 39
Clean GHS Blower* x 55
Service Mower Blades x 57
Check Security of Air Filtration Components x 56
Check Air Filter Restriction Gauge x 50
Lubricate Grease Fittings and Oil Points* x 45
Check Battery Electrolyte Level x 56
Check Hydrostatic Transmission Fluid
ΔΔΔ
x 49
Check Tire Pressure x 57
Check Drive Belts (Engine, PTO, Ground Drive) x 59
Check PTO and Deck Gearbox Oil Seals x 48
Check Safety Switch System x 60
Change Engine Crankcase Oil ** x 45
Clean Fuel Filter x 52
Check Air Filter Element* x 51
Check Gear Axle Oil Level x
49
Clean Hydrostatic Transmission Cooling Fins x 56
Check/Regap Spark Plug x 59
Check Wheel Bolt Torque (75 to 85
lb·ft)
x
ΔΔ
Clean Engine Cooling Fins x 53
Check Fuel Lines and Clamps x 59
Replace Air Filter Element
and Dust Ejection Valve ***
x 51
Service Battery x 56
Check Blade Brake Action x
ΔΔ
Check/Adjust Vertical Position of
Grass-Pak
®
Switch
x 67
Check/Adjust FSC Friction Lock x 60
Change Gear Axle Oil
Δ
x 49
Change Hydrostatic Transmission Fluid
Δ
x
ΔΔ
Replace Fuel Lines and Clamps x 59
∗ More often in extremely dusty or dirty conditions
(see notes about air cleaner element under
IMPORTANT TIPS FOR CARE OF THE SUBARU ENGINE)
∗∗ Change engine oil after rst 8 hours
of operation of a new engine (break-in period)
∗∗∗ Air cleaner is remote mounted Donaldson Radialseal unit,
replace lters every year and dust ejection valve every year
or when worn or damaged
Δ Change every 2 years or 1000 hours
ΔΔ See your Walker dealer for this service or
refer to the Walker Service Manual
ΔΔΔ Hydrostatic transmissions are sealed - DO NOT OPEN
RESERVOIR CAPS - refer to Hydrostatic Transmission Fluid
CAUTION
Maintenance procedures requiring special training or
tools should be performed by a trained technician.
CAUTION
When performing maintenance with the
mower body raised, a safety prop should
be installed from back of body to chassis
frame (fail-safe protection in case of fail ure
of body lift support). For GHS Model,
empty grass catcher before raising body.
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