Cummins/Onan — Converting the Fuel System Type
Adjustments
From a Cummins/Onan service manual covering: C13 N6H, C13N6H, C17 N6H, C17N6H, C20 N6, C20N6H, RS13A. Check it applies to your exact model before use.
Applies to: Cummins/Onan C13 N6H, Cummins/Onan C17 N6H, Cummins/Onan C20 N6, Cummins/Onan RS13A
Before you start
- Do not rotate the center section of the valve beyond the detent.
Procedure
- From the Main screen, select Menu; hold the Next key at least 5 seconds to view the Config Menu.
- Highlight 'Config' and click Enter. Use the Next key to navigate to the Fuel Type field; select NG or LP.
- Do not change the number in the Config field.
- Use a 6 mm external hex wrench to rotate the center section of the fuel valve.
- Turn the center section clockwise until the detent is reached; do not rotate beyond this point.
- Keep selecting the Back button to save the settings and return to the Main screen.
Tools required
- 6 mm external hex wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan C20 N6 →
Source: Cummins/Onan service 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.