1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 209Get this manual

1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 209

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CYLINDER BLOCKCRANKCASE

a-Expander b-Bottom Rail c-Top Rail d-Second Ring e-Top Ring f-"N" Mark Should Face Piston Crown 2 Offset the piston ring end gaps50

a-End Gap Top Com