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81 XJ550 maxim Piston Ring identification

Discussion in 'XJ Technical Chat' started by MJCXJ550, Jan 9, 2019.

  1. MJCXJ550

    MJCXJ550 New Member

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    Bought new rings Yamaha Genuine 4GA-11603-00 (R180131V) (NO.2215). Need to know which rings go in the 1st and 2nd grooves of the piston. Both rings have a RN stamped into them on the flat side and are the same size. Looking at them with a magnifying glass and I don't see any bevels/chamfers on the edge. The only difference I see is the that both are black on the flat side but on the outside edge of the ring one of them is shiny and the other is black. I am assuming the RN will face to the top of the piston but which piston groove do each of them go in.
     
    MJCXJ550, Jan 9, 2019
    #1
  2. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Ring with shiny edge goes on top. Typically the numbered or lettered side faces up.
     
    chacal, Jan 10, 2019
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