Need Advice on Cleaning Carbs

Discussion in 'Motorbike Technical Discussion' started by Manjo, Oct 23, 2003.

  1. Manjo

    Manjo Guest

    I'm going to thoroughly clean the CV carbs (2) on my bike. I think there's
    junk in a low end circuit. I've been finding gasoline in the deceleration
    circuit used to enrich the air-fuel mix when coming to a faster than normal
    stop, to avoid a backfire.

    I have a gallon of Berryman's carb cleaning fluid with a basket to hold the
    parts. They call for a maximum of 30 minute soak. I will remove ALL the
    rubber parts as well as screws, bolts, washers, etc. I've also seen a "carb
    cleaning kit" on the web site that looks like a set of
    (flexible?) wires used to run into the various carb air and fuel circuits to
    clean and dislodge junk. I also hope to have an air compressor to help blow
    out the circuits.

    Besides being careful not to get carb cleaner on me or stuff, what else
    should do/buy/check to make this a quick and efficient job? TIA for
    suggestions, tips, comments.
    Manjo, Oct 23, 2003
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  2. Manjo

    Brent Guest

    I haven't done a lot of carbs, but I learned the following on the few that I
    have done:

    Leave them attached if you can still dip them one at a time. (I've never
    dipped them, just used an aerosol carb cleaner)
    Do one at a time, so if you forget how something goes back together, you
    have a model that is (hopefully) correct.
    The Idle air mixture screw (usually) has a spring, a metal washer and an
    o-ring. If all that comes out is the screw and spring, the others are still
    up the orifice (sorry for the nasty talk)
    Watch for springs that want to jump away and disappear during dismantling
    (air cutoff valves, and beneath the main diaphragm)
    Hold the diaphragms up to a light and look for pinholes or cracks.
    Not all rebuild kits are created equal.
    If you replace the four (or three) bowl-mounting screws with allen head
    screws, it will be easier the next time.
    Brent, Oct 23, 2003
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  3. Manjo

    Manjo Guest


    Thanks. Good useful info. I forgot to remember not to forget to check the
    diaphragms. Got the first snow here, so after yard clean-up, I'll be
    cleaning the carbs.

    Ride safe,

    Manjo, Oct 24, 2003
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