2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 144Get this manual

2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 144

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POWERHEAD CYLINDER HEAD Subtract the valve stem outside diameter from the valve guide inside diameter to determine the valve guide-to-stem clearanceIf the measurement exceeds the service limit, replac