Kawasaki Mule diesel dies under load: fuel filter and water
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Applies to: Kawasaki Mule 4010 and other diesel Mules
Symptoms
- Runs at idle but stumbles or dies under load
- Loses power on hills, then recovers
- Hard starting after sitting
Why it happens
A clogged fuel filter or water in the separator starves the injection pump. Diesel bought in small amounts and stored in cans often carries water and dirt.
How to fix it
- Drain the water separator until clean fuel runs.
- Replace the fuel filter.
- Bleed air from the fuel system per the manual.
- If it keeps happening, drain the tank and check the pickup screen.
Tools and parts
- Fuel filter
- Drain pan
- Wrenches
What the factory service manual covers
Fuel system: filter service, water separator, air bleeding. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.