2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 157Get this manual

2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 157

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POWERHEAD PISTON, CYLINDER, AND CRANKSHAFT Wrist Pin and Bores Inspect the wrist pin and the bores in the piston and the connecting rod for wear and damageUse micrometer to check the wrist pin outside