Briggs & Stratton — Adjust Valve Clearance
Adjustments · Valve train
From a Briggs & Stratton service manual — check it applies to your exact model before use.
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Procedure
- Turn crankshaft until piston being checked is at Top Dead Center on compression stroke with both valves closed.
- Continue turning crankshaft clockwise until piston has moved 6.35 mm (1/4") past Top Dead Center.
- Check valve clearance with feeler gauge between valve stem and rocker arm.
- Valve clearance is .10-.15 mm (.004"-.006") for intake and exhaust; adjust as necessary.
- Tighten locknut while holding adjusting screw; torque lock nut to 7 Nm (60 in. lbs.).
- Recheck clearance; rotate crankshaft several turns to check operation.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve clearance .10-.15 mm (.004"-.006")
- Locknut torque 7 Nm (60 in. lbs.)
Source: Briggs & Stratton 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.