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Thread: help rings

  1. #1

    Join Date
    Aug 2007
    kingsport. tn.

    help rings

    is there a up or down for rings on sl780 .this is the 2nd. rebuild on top end the pto . cly . sucked the top ring. center piston a ok .mag cly .started to burn .top of piston. any ideas.please email. thanks butch.

  2. #2
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Campbell, Ca.
    butch, WELCOME to the Green Hulk Forums!!!

    Check for fuel contamination.
    Water in tank
    Dirt or foreign materials in carbs
    Degrading hoses
    Fuel selector switch etc.
    Have a photo of the plugs, piston tops and domes?

  3. #3
    FLjoyrider's Avatar
    Join Date
    Jul 2007
    Yes there is a top and bottom depending on the ring style. If you have the wedge shaped rings, you want to have the angled side pointing up. If you have the L shaped rings then you want the lip on the L pointing up, if you have rectangular rings then I'm not sure but usually the side with the numbers / stamped letter is the side that goes up. I know there is a diagram in my manual, I can scan and post if needed.

  4. #4
    FLjoyrider's Avatar
    Join Date
    Jul 2007
    Might want to do a crank case pressure test once you are done assembling, that can also cause premature piston failure.

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