Cummins/Onan — Switching Fuel Sources
Operation · Fuel selector
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
- DO NOT add gasoline to the fuel tank or connect the LPG/propane hose while the generator is in operation.
Procedure
- Gasoline to propane: turn the propane tank valve fully open, then turn the fuel selector switch to propane operation.
- Propane to gasoline: turn the fuel selector switch to gasoline operation, then turn the propane tank valve fully closed.
- If the engine stops when switching fuel sources, disconnect all loads and restart on the fuel source of choice.
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.