Volvo Penta — Valve Clearance
Adjustments · Valve mechanism / rocker arm
From a Volvo Penta service manual — check it applies to your exact model before use.
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Before you start
- Engine must not be running when checking and adjusting valve clearance.
- Make sure the stop lever is pulled out and the starter key switched off.
Procedure
- Check and adjust valve clearance on a cold engine.
- Turn engine in normal direction to align timing mark [1.6] on damper with pointer.
- Adjust valve height: unscrew lock nut and adjusting screw; press yoke down; turn adjusting screw until it touches valve stem; turn 10 degrees more; lock.
- Check clearance with feeler gauges between rocker arm and yoke cap.
- Adjust in firing order 1-5-3-6-2-4, turning engine 120° per cylinder.
Tools required
- Feeler gauges Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet valve 0.6 mm [0.024 in.]
- Exhaust valve 0.8 mm [0.031 in.]
- Clearance between valve yoke and rotator min. 1.5 mm [0.059 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.