88 js550 carb

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Thread: 88 js550 carb

  1. #1
    PWCToday Newbie
    Join Date
    May 2018

    88 js550 carb

    Hey guys. New to the forum. Been riding stand ups for around a year now and want to get a new carb for my 88 js550. What's a good one to get? I have a mikuni round carb which is a low end one from what I hear. Also, my current set up the guy before me removed the rev limiter but didn't put a restrictor in the return line. Does anyone know what size jet I need? Thanks fellas

  2. #2
    PWCToday.com Is My Home Away From Home john zigler's Avatar
    Join Date
    Mar 2003

    Re: 88 js550 carb

    Welcome to the site.

    A Mikuni SBN 44 is a good upgrade on the old Kaw 550. It has replaceable jets for easier tuning.

    Your 88 would have had a BN44 originally. The SBN will bolt onto your intake but you need a spacer for the intake manifold, so the carb fuel pump will clear the cyl. We sell these here.


    We also have new SBN carbs, flame arrestors, gaskets, primer kits, and more. Can Jet the carb for your application for an additional $40

    RCJS also doing business as WATCON
    608-743-1305 9am to 5pm CST m-f
    email watcon@watcon.com

    Please visit our web sites

    new parts / products / services www.watcon.com
    used parts www.rockcountyjetski.webs.com
    thank you

    Please check out and like WATCON on Facebook

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