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Thread: Jet change with Zipper kit

  1. #1
    Senior Member
    Join Date
    May 2011
    Location
    MN
    Posts
    469

    Default Jet change with Zipper kit

    Has anyone change jet size after installing the 104 HP Zipper kit. My engine burns rich with the clip on the the 3rd groove and lean on the second groove. I'm thinking if I increase the jet size it might get a more consistent fuel burn. Ideas?

  2. #2
    Senior Member
    Join Date
    Apr 2009
    Location
    Chisholm Mn
    Posts
    1,562

    Default Re: Jet change with Zipper kit

    With the 582, sometimes I would put a thin washer under the clip that raised the needle 1/2 the amount moving to the next notch would do. The main jet is for full throttle ops, needle and needle jet control mid range ops. JImChuk

  3. #3
    Super Moderator Av8r3400's Avatar
    Join Date
    Jan 2009
    Location
    Merrill, WI
    Posts
    3,044

    Default Re: Jet change with Zipper kit

    Hal recommended the stock jets for a ULS and the needles in the #3 (stock) position to me. That's what I did. Runs great for 500 hours now.
    Av8r3400
    Kitfox Model IV
    The Mangy Fox
    912UL 105hp Zipper
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