Cummins/Onan — Troubleshoot - Genset Unstable (Hunts)
Testing & diagnosis · Fuel / governor
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Procedure
- Check fuel supply
- Check clogged filter
- Check for air in fuel
- Check loose wire connections
- Check governor linkage binding
- Check governor adjustments
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.