Cummins/Onan P2400 / P3500 — Fuel Sediment Cup Cleaning
Maintenance
For the Cummins/Onan P2400 / P3500, from the Cummins/Onan service manual.
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Before you start
- After reassembly, check for leaks and make sure the area is dry before starting the engine.
Procedure
- Turn the fuel valve to the OFF position. Remove the sediment cup and o-ring.
- Clean the sediment cup and o-ring in a nonflammable or high flash-point solvent.
- Reinstall the o-ring and sediment cup.
- Turn the fuel valve ON and check for leaks.
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.