Cummins/Onan Onan P4500i / P4500 — Cleaning the Air Filter
Maintenance · Air intake
For the Cummins/Onan Onan P4500i / P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan Onan P4500i, Cummins/Onan P4500
Before you start
- Never use gasoline or flammable solvents to clean the air filter.
Parts for this job
Part numbers from the service-parts lists for Cummins/Onan Onan P4500i, Cummins/Onan P4500. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Turn off inverter and let cool.
- Remove the engine service panel.
- Turn 2 knobs on air cleaner to unlock cover; tip cover down.
- Remove the foam element from the housing.
- Wash foam element in detergent soap and warm water, squeezing gently.
- Rinse element in clean water with a slow squeezing action.
- Dry element with a slow, firm squeezing action.
- Return element to housing and install cover, locking knobs.
- Install the engine service panel.
Tools required
- Household detergent soap Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan Onan P4500i →, 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.