Volvo Penta — Speed setting (PSG Governor)
Adjustments · Woodward PSG governor
From a Volvo Penta service manual — check it applies to your exact model before use.
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Before you start
- Stand by to stop the engine manually to avoid engine overspeed.
- Set screw no. 4 adjusts maximum fuel and is factory set and should not be touched.
Procedure
- Run engine until coolant and oil temperature is 70°C [158°F] or higher.
- Check and adjust idling speed with adjust screw (1).
- Check and adjust no-load max speed with governor set bolt (2).
- Correct hunting with needle valve (3): open 2-3 rotations until engine hunts, keep hunting 30 seconds.
- Slowly close valve until hunting stops.
- Seal all set bolts.
Specs & values
- Keep needle valve backed off at least 1/4 rotation from fully closed
Source: Volvo Penta 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.