carb slide

Discussion in 'Motorized Bicycle General Discussion' started by Caddy429, Jul 5, 2011.

  1. Caddy429

    Caddy429 New Member

    Jun 16, 2011
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    hey guys i am almost finished with my first build i have a cranbrook from wallmart i put a 48cc dax motor and i test drove it the other day and the motor runs fine its pretty fast as it is. the only problem im running into is my throttle is not working, i can do it manually from the carb lever but thats it. i dont understand how the carb slide and needle work i followed the directions on the dax site to put it together the needle goes first then a metal ring and then the cable attatche to the slide from the bottom. what i dont understand is when i pull the throttle it contracts the spring moving the carb slide all the way up. is this how its supposed to work? there isnt really any room for the slide to move thats why im wondering if just the needle with the metal ring only is supposed to move up in the slide. any help is much appriciated! thank you.
  2. DuctTapedGoat

    DuctTapedGoat Active Member

    Dec 20, 2010
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    It's prolly backwards.

    The small notch is where the idle screw goes, the long slot goes to a guide pin in the carb barrel.
  3. Al.Fisherman

    Al.Fisherman New Member

    Sep 9, 2009
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    Really don't understand by your description..but here's how it goes together. The cable is inserted into the top cap of the carburetor. Second the spring goes on. Third set the needle into the barrel followed by the split washer. Align the washer (split end) up with the long slot in the barrel so that you can install the cable in the holder on the bottom of the barrel, and align up in the long slot to the top. Look into the carburetor from there the barrel slides into, and you will see a pin sticking out. The slot where the cable is, aligns up with that pin. The wide cut away at the bottom aligns up with the idle screw. After that, if it doesn't work the way it should, remove the throttle at the handle bars, remove the cable from the grip, and pull to see if the cable and barrel works ok, it might be a crimp in the cable, or too tight of a bend somewhere. If the carburetor is installed correctly it might be in how the cable is run in the throttle grip.

    The spring forces the split washer down on top of the needle/clip, so the needle will remain stationary. When inserting the barrel in the carburetor, NO pressure is needed to sit correctly. Actually without the cable attached, and with the barrel inserted correctly,you should be able to turn the carburetor over and the barrel should fall out without much effort..
    #3 Al.Fisherman, Jul 5, 2011
    Last edited: Jul 5, 2011

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