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About jim68

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    TT Newbie
  1. <font color="black"> I'm in the process of reassembling my 1998 620 sc and I don't know which way up to fit the upper rectangular piston ring. The oil ring and the compression ring both have "top" etched on them. The ring in question has an "O" stamped on the same side that the outer edge is chamfered. Help!!