Cummins/Onan DJ30 — Adjust Governor Speed
Adjustments
For the Cummins/Onan DJ30, from the Cummins/Onan service manual.
Applies to: Onan (Onan Division of Studebaker Corporation, Minneapolis, Minnesota) Spec T, Cummins/Onan DJA engine
Procedure
- Hold the sensitivity stud in place with a screwdriver.
- Change spring tension with the speed adjusting nut.
- More tension gives more speed.
- To adjust high speed of solenoid two-speed governors, change solenoid rod length.
Tools required
- Screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Onan (Onan Division of Studebaker Corporation, Minneapolis, Minnesota) Spec T →
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.