Cummins/Onan Onan P4500i / P4500 — Replacing the Fuel Filter
Maintenance
For the Cummins/Onan Onan P4500i / P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan Onan P4500i, Cummins/Onan P4500
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 the generator off and allow the engine to cool for 30 minutes.
- Drain the fuel tank as described previously.
- Remove the engine service cover.
- Locate the fuel filter and note the filter's orientation.
- Using pliers, squeeze the fuel line clips and slide the fuel lines away from the filter.
- Install the fuel lines onto the new filter. Ensure the fuel filter is oriented correctly.
Tools required
- Pliers 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.