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Thread: Honda ATC110 carburettor question.

  1. #1
    Join Date
    Feb 2015
    Location
    U.K
    --
    2

    Honda ATC110 carburettor question.

    Hi Peeps,
    Just registered, my names Monty, I'm in the U.K.
    Got a quick question for ya,
    I've just rebuilt a Honda ATC 110 carb, I know how to tune it once it's running, but I've got no idea of where to set the mixture and idle screws as a starting point.
    Could someone give me a rough idea of how many turns out from fully in would be a good place to start ?
    Thanks.
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  2. #2
    Join Date
    Jan 2014
    Location
    Massachusetts USA
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    782
    I usually set the mixture screw 1 turn out and adjust (when running) from there. If the engine wants more than 2 turns out, the pilot jet is wrong as far as I'm concerned. As for a starting point for the idle screw, I back it out until it doesn't touch the slide at all, then slowly screw it in until I see the slide start to rise. This usually results in too low of an idle, but I just turn it up to the rpm I want.
    1985 Tri-Z 250
    1985 ATC250R

  3. #3
    Join Date
    Feb 2015
    Location
    U.K
    --
    2
    Great, thanks very much.

  4. #4
    Join Date
    Nov 2014
    Location
    Bergheim, Texas
    --
    5
    I believe FACTORY SETTING IS ( ALL THE WAY IN AND THEN 2 each 100 degree turns backwards from the. If it idles too high then just play with it for a few minutes. You'll also find the idle speed with a tachometer.

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