2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5006590, Page 158Get this manual

2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5006590, Page 158

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POWERHEAD CYLINDERCRANKCASEPISTON ASSEMBLY Pistons and Rings piston ring to groove clearance after decarbonizingStandard piston ring groove width: 1st and 2nd rings: 0.0476 to 0.0484 in (1.21 to 1.23