Craftsman Marine — Adjusting the valve clearance
Adjustments · Valve train
From a Craftsman Marine service manual — check it applies to your exact model before use.
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Before you start
- Be sure to retighten the cylinder head bolts before adjusting the valve clearance.
Procedure
- Set the cylinder to be adjusted to the top dead center of compression stroke.
- Align the TDC mark on the crankshaft pulley with the mark on the gear case.
- L2: turn crankshaft 180° clockwise from No.1 TDC to set No.2 cylinder TDC.
- L3: turn crankshaft 240° clockwise from No.2 TDC to set No.3 cylinder TDC.
- Adjust valve clearance to spec.
Specs & values
- Valve clearance (IN and EX): 0.25 mm [0.0098 in.] (Cold)
Source: Craftsman Marine 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.