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  1. #1

    2nd '93 Wave Runner III Rebuild Question

    Fired up the rebuilt 650 today!! Ran pretty good except for excessive LIQUID fuel dripping down the venturi (along with the heavy exhaust smoke).
    I logged on to order a rebuild kit when I hit a snag.
    I have the square-body Mikuni Super BN (SBN) carb.
    QUESTON: How do I determine which of the three various rate float springs I need and which of the four different needle/seats ??
    The WR III will be a play toy for the grandkids so hole shots and break-neck speed is of no importance.
    Thanks. Ed in 'ol Virginny


  2. #2
    Quote Originally Posted by EddiePetty View Post
    Fired up the rebuilt 650 today!! Ran pretty good except for excessive LIQUID fuel dripping down the venturi (along with the heavy exhaust smoke).
    I logged on to order a rebuild kit when I hit a snag.
    I have the square-body Mikuni Super BN (SBN) carb.
    QUESTON: How do I determine which of the three various rate float springs I need and which of the four different needle/seats ??
    The WR III will be a play toy for the grandkids so hole shots and break-neck speed is of no importance.
    Thanks. Ed in 'ol Virginny
    For needle size I usually rip it open and read the seat and I almost never replace springs because they have always been fine

  3. #3
    Hi Ed, unless somebody has been in the carb recently to fix something. Usually it's just the oring around the seat that's done.Have seen a few that the p/o thought it was like a regular carb and adjusted the float height.If ya see any silicone sealent, you know they did not know.
    Btw gonna be a few more years before our grandchildren start riding grumpas sj!LOL

    Quote Originally Posted by EddiePetty View Post
    Fired up the rebuilt 650 today!! Ran pretty good except for excessive LIQUID fuel dripping down the venturi (along with the heavy exhaust smoke).
    I logged on to order a rebuild kit when I hit a snag.
    I have the square-body Mikuni Super BN (SBN) carb.
    QUESTON: How do I determine which of the three various rate float springs I need and which of the four different needle/seats ??
    The WR III will be a play toy for the grandkids so hole shots and break-neck speed is of no importance.
    Thanks. Ed in 'ol Virginny

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