Cummins/Onan 6.0 NH-1R/9500 / 6KW Power Drawer — Governor Speed and Sensitivity Adjustment
Adjustments
For the Cummins/Onan 6.0 NH-1R/9500 / 6KW Power Drawer, from the Cummins/Onan service manual.
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Procedure
- Adjust carburetor idle needle with no load connected.
- Adjust carburetor main jet for best fuel mixture at full rated load.
- Adjust length of governor linkage; check for binding.
- Adjust governor spring tension for rated speed at no load.
- Adjust governor sensitivity.
- Recheck speed adjustment.
- Set carburetor throttle stop screw.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Maximum no-load speed 1890 RPM
- Minimum full-load speed 1770 RPM
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.