Ditch Witch ST37x - 500 Hour

Service - 84 ST37x Operator’s Manual
500 Hour
500 Hour
Change Fuel Filter
Change filter every 500 hours. If you refuel from
cans, replace filter more often.
The canister filter is located in the engine
compartment.
See parts manual or contact your Ditch Witch
®
dealer for correct replacement filter.
Change Hydraulic Fluid and Filter
Change hydraulic fluid and filter every 500 hours.
Change every 250 hours if jobsite temperature
exceeds 100°F (38°C) more than 50% of the
time.
1. Remove drain plug (3).
2. Drain fluid and replace plug.
3. Change filter. See page 82.
4. Add THF at fill (1) until fluid level is at halfway
point on sight glass (2). Capacity is 9.2 gal
(35 L).
Location Task Notes
Change fuel filter
Change hydraulic fluid and filter
Change water separator filter
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