Yanmar 4TNE88 — Adjusting the no-load maximum (or minimum) revolutions

Adjustments · Governor

For the Yanmar 4TNE88, from the Yanmar service manual.

Applies to: Yanmar 4TNE88, Yanmar TNE series engine

Procedure

1. Warm up the engine, then gradually increase speed up to the no-load max. revolution.
2. Adjust with the no-load max. revolution adjusting bolt if it differs.
3. Set the engine to idling revolution by turning the no-load min. revolution adjusting bolt.

Full service-parts list: Yanmar 4TNE88 →

Source: Yanmar 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.

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