MAINTENANCE AND LUBRICATION 7
en-71
Fuel System
Use low or ultra low sulfur Diesel fuel (ASTM D975 Ultra Low Sulfur)
Fuel Filter
1. Replace the fuel filter every 400 hours.
2. Stop the engine.
3. Open the air valve at the top of the filter to release system pressure.
4. Remove fuel filter cartridge. Clean any fuel that spills.
5. Assemble new filter cartridge to the filter base. Tighten the cartridge with
your hand.
6. Bleed air from the fuel system.
How To Bleed The Air From The Fuel System
1. After the fuel filter cartridge is removed or the fuel hoses are replaced,
the air must be removed from the fuel system.
2. Open the air vent on the fuel filter. Turn the ignition switch to the RUN position, but do not start the engine.
Operate the fuel pump until air bubbles at filter vent stop and fuel starts to spill. Close the air vent. Clean any fuel
that spills.
3. Start the engine. The engine will remove any air remaining in the fuel hoses.
CAUTION
The diesel fuel can damage your skin. Use gloves when you use diesel fuel. If diesel fuel touches your
skin, clean the area immediately.
CAUTION
Discard diesel fuel in accordance with local safety regulations
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From Fuel
Pump
Fuel
Filter
Air Vent
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