Volvo Penta — Adjusting the valves
Adjustments · Valve mechanism / rocker arms
From a Volvo Penta service manual — check it applies to your exact model before use.
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Before you start
- The valves must never be adjusted while the engine is running
Procedure
- Remove the rocker arm casings.
- Adjust valve clearances on cylinder no. 1 in its firing position; no. 6 valves will then rock.
- Turn the engine one third of a revolution in its direction of rotation; check cylinder no. 5.
- Continue in firing order 1-5-3-6-2-4, referenced to the rocking cylinder.
- Set inlet 0.40 mm and exhaust 0.70 mm.
- Clean and refit the rocker arm casings with new gaskets and check for oil leaks.
Specs & values
- Inlet 0.40 mm (0.016 in)
- Exhaust 0.70 mm (0.028 in)
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.