Power Solutions International — Valve lash adjustment
Adjustments · Rocker and rocker shaft
From a Power Solutions International service manual — check it applies to your exact model before use.
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Procedure
- Rotate crankshaft until phase pointer points at 0 tick on phase plate.
- Ensure 0 tick of crankshaft timing gear is engaged with 0 tick of camshaft gear.
- Adjust valve clearance of No. 1-2-3-6-7-10 rocker.
- Intake valve: fill in 0.2mm plug gauge, tighten nuts to 20±5 N·m, pull out gauge.
- Check clearance with 0.25mm plug gauge.
- Exhaust valve: fill in 0.3mm plug gauge, tighten nuts to 20±5 N·m, pull out gauge.
- Check clearance with 0.35mm plug gauge.
- Rotate crankshaft to next position and adjust No. 4-5-8-9-11-12 rocker.
Tools required
- 0.2mm plug gauge Amazon
- 0.25mm plug gauge Amazon
- 0.3mm plug gauge Amazon
- 0.35mm plug gauge Amazon
- torque spanner Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake valve clearance 0.2~0.3mm
- Exhaust valve clearance 0.3~0.4mm
- Rocker nut torque 20±5 N·m
Source: Power Solutions International 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.