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Changing the Fuel Filters
Moving Parts.
Will cause severe injury or death.
During operation, some parts of the generator set can become extremely hot. To avoid
burns, allow the engine to cool sufficiently before changing the fuel filters.
Always stop the engine before changing the fuel filters. DO NOT change the fuel filters
while the engine is running.
Always put the generator set in OFF mode before changing the fuel filters. If the generator
set is in AUTO mode, the generator set may start automatically, without warning.
Water, dirt, and other contamination in the fuel can cause the engine to not operate properly, increase
wear and/or engine damage. The fuel filters trap these contaminants before they reach the engine.
Periodic replacement of the fuel filters is required according to the manufacturer’s schedule. Use the
following steps to replace the fuel filters.
Primary Fuel Filter Replacement
1. Shut down the generator set and put it in OFF mode.
2. Ensure the generator set is on a level surface and properly supported.
3. Allow the generator set to cool fully.
4. Unscrew the filter cartridge from the filter boss, ensuring the old gasket does not remain behind.
5. Apply a thin film of clean diesel fuel to the gasket on the new filter.
6. Screw on the new fuel filter cartridge and tighten by hand. DO NOT use a wrench to tighten the filter.
7. Bleed the air from the fuel system.
8. Clean up any spilled fuel.
9. Dispose of the old filter according to local regulations.
Inline Fuel Filter Replacement
1. Shut down the generator set and put it in OFF mode.
2. Ensure the generator set is on a level surface and properly supported.
3. Allow the generator set to cool fully.
4. Unbolt the fuel pump and filter assembly from the fan shroud.
5. Loosen the hose clamp and remove the lower fuel hose from the barb on the filter.
6. Unscrew the filter from the inlet of the fuel pump.
7. Carefully remove the hose barb from the filter and save.
8. Being careful not to get any inside the filter opening, apply a small amount of diesel safe pipe sealant
to the threads on the new filter and hose barb removed earlier. DO NOT use Teflon tape.
Hot Engine and Exhaust System
Can cause severe injury or death.
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