Power Solutions International — Measure and adjust intake and exhaust valve clearance
Adjustments · Valve train
From a Power Solutions International operator's manual — check it applies to your exact model before use.
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Before you start
- Measure and adjust while engine is cold.
Procedure
- Measure and adjust while engine is cold.
- Remove timing access cover and all twelve valve covers.
- Rotate engine until at TDC #1.
- Check rockers on cylinder #1 to determine adjustable valves.
- Use feeler gauges between rocker arm and valve bridge.
- Set intake lash to .022 in (0.55 mm); exhaust to 0.039 in (1.0 mm).
- Rotate crankshaft 360 degrees to TDC #1; check remaining valves.
- Reinstall valve covers.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- .022 in intake
- 0.039 in exhaust
- Engine cold
Source: Power Solutions International operator's 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.