Cummins/Onan E125 / E140 — Governor Arm Adjustment
Adjustments
For the Cummins/Onan E125 / E140, from the Cummins/Onan service manual.
Applies to: Cummins/Onan E125, Cummins/Onan E140, Cummins/Onan E125H/E140H engine
Before you start
- Disconnect spark plug and battery negative cable before adjusting the governor.
Procedure
- Loosely assemble governor arm to governor shaft and start the lock nut.
- Re-attach link to governor arm and carburetor; replace worn clips.
- Push top of governor arm toward carburetor until it stops and hold.
- Check governor spring pulls carburetor throttle to wide open.
- Tighten lock nut; ensure governor shaft rotates clockwise against internal parts.
- Tighten to Section 3 torque specifications.
Specs & values
- Governor Arm Nut M6: 8.1-10.9 N-m
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.