2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 154Get this manual

2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 154

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POWERHEAD PISTON, CYLINDER, AND CRANKSHAFT Check the water jackets for clogs or obstructionsThe difference between the two depth measurements is the cylinder bore taperThe difference between the axial