Cummins/Onan P4500 — Add Unleaded Gasoline to Gas Tank
Maintenance · Fuel Tank
For the Cummins/Onan P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P4500
Before you start
- Only operate on flat dry surfaces
- Do not move generator while running
Procedure
- Unscrew gas cap on top of tank and insert clean funnel into tank.
- Slowly add gasoline into fuel tank; level should NOT exceed filler neck.
- Secure gas cap.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.