2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 147Get this manual

2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 147

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POWERHEAD CYLINDER HEAD

Valve Spring
Check the strength of the valve spring by measuring its free length with vernier calipersIf the spring's free length is less than the service li