Cummins/Onan — Filling the Fuel Tank
Operation
From a Cummins/Onan owner's manual covering: Onan P4500iDF, P4500iDF, P4500iDF Inverter. Check it applies to your exact model before use.
Applies to: Cummins/Onan P4500iDF, Cummins/Onan P4500iDF Inverter
Before you start
- Never refuel the generator while the engine is running.
- Clean the fuel screen filter of debris before and after each fueling.
Procedure
- Turn the generator OFF and allow it to cool a minimum of two minutes before fueling.
- Place the generator on level ground in a well ventilated area.
- Clean the area around the fuel cap and remove the cap slowly.
- Slowly add the recommended fuel; DO NOT overfill.
- Fill only to the red maximum fill ring on the fuel screen filter in the filler neck.
- Install the fuel cap and tighten until a click is heard.
Full service-parts list: Cummins/Onan P4500iDF →, Cummins/Onan P4500iDF Inverter →
Source: Cummins/Onan owner's 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.