2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5005990, Page 164Get this manual

2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5005990, Page 164

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POWERHEAD CYLINDERCRANKCASEPISTON ASSEMBLY Install 1st ring pistonThere is standard 1st ring1 mark .0

1 Ring compressor

Position rings so that gaps approximately 900 angles