Cummins/Onan Onan P4500i Inverter / P4500 — Air Filter Maintenance
Maintenance
For the Cummins/Onan Onan P4500i Inverter / P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P4500
Before you start
- NEVER use gasoline or other flammable solvents to clean the air filter.
- DO NOT twist or tear the foam air filter element.
Parts for this job
Part numbers from the service-parts list for Cummins/Onan P4500. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Allow the engine to cool and remove the engine service cover.
- Turn the knobs on the air cleaner cover to the unlocked position and tip the cover down to remove.
- Remove the foam air filter and wash by submerging in household detergent soap and warm water; squeeze slowly.
- Rinse the element in fresh water with a slow squeezing action and allow to dry thoroughly.
- Dip the foam air filter in clean engine oil then squeeze out all excess oil.
- Install the foam air filter in the housing and lock the air cleaner cover in place.
- Install the engine service panel.
Specs & values
- Clean after every 50 hours of use or six months
Full service-parts list: Cummins/Onan P4500 →
Source: Cummins/Onan operator'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.