Cummins/Onan — Valves - Adjust, All
Adjustments
From a Cummins/Onan service manual covering: C30 D6, C33 D5, C35 D6, C38 D5, X3.3 Engine. Check it applies to your exact model before use.
Applies to: Cummins/Onan C30 D6, Cummins/Onan C33 D5, Cummins/Onan C35 D6, Cummins/Onan C38 D5
Procedure
- Disconnect battery cables
- Remove valve cover
- Adjust valve lash
- Test run unit
Full service-parts list: Cummins/Onan C35 D6 →
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.