Cummins/Onan P2400 / P3500 — Storing the Generator Set (Out-of-Service Protection)
Maintenance
For the Cummins/Onan P2400 / P3500, from the Cummins/Onan service manual.
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Before you start
- Fuel additives can cause a risk of personal injury. Read and follow the manufacturer's instructions.
Procedure
- Add a fuel preservative and stabilizer to the fuel tank, or let the generator set run out of fuel.
- Shut the fuel valve and drain the carburetor bowl.
- Remove the spark plug; squirt one tablespoon (about 30 cm3) of clean engine oil into the spark plug hole; turn the engine over several revolutions; replace the spark plug; pull the recoil starter hand
- Change engine oil and attach a tag indicating the viscosity of oil used.
- Store the generator set in a dry, protected area.
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.