2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 143Get this manual

2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 143

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POWERHEAD CYLINDER HEAD If the measurement exceeds the service limit, replace the rocker arm andor the shaft
Valve Stem Outside Diameter 0.21520.2157 inIntake valve (5.4655.480 mm) 0.21460.2152