Cummins/Onan 627.20199 — Governor Adjustment
Adjustments
For the Cummins/Onan 627.20199, from the Cummins/Onan owner's manual.
Applies to: Craftsman 627.20199
Before you start
- If spring moved in too far, engine hunts.
Procedure
- Verify carburetor is properly adjusted and engine thoroughly warmed up.
- Check linkage length so carburetor throttle lever stop just touches bottom of carburetor body.
- Turn governor ball joint about two more complete turns to shorten linkage; tighten locknut.
- Set speed control lever to POWER position.
- Adjust spring tension for about 1850 rpm no-load (1550 rpm on 50 Hz models).
- Pull speed control lever to WELD position; speed should be about 2700 rpm no-load.
- Check speed while welding at maximum current; speed should drop about 200 rpm.
Tools required
- Tachometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Nominal welding speed 2500 rpm
- AC speed 1800 rpm (60 Hz) or 1500 rpm (50 Hz)
Full service-parts list: Craftsman 627.20199 →
Source: Cummins/Onan owner'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.