Couple of Carburetor Questions

Discussion in 'Motorized Bicycle General Discussion' started by kenlani, Jul 26, 2008.

  1. kenlani

    kenlani New Member

    Joined:
    Jul 23, 2008
    Messages:
    4
    Likes Received:
    0
    Hi all, I finished my 49cc install, having a ball with my bike but need advice

    Im at 5700 feet altitude and think Im gonna have to do some jet work so I have a couple questions;

    ---when I replace the main jet (I'm going smaller) do I have to replace the needle too?

    ---how much of a gap should the slide in the carburetor have at closed throttle (idle)?

    Thanks all for the help
     
  2. misteright1_99

    misteright1_99 New Member

    Joined:
    Mar 21, 2008
    Messages:
    716
    Likes Received:
    0
    1) You wont have to "replace" the needle, just adjust up or down probably......


    2) I dont believe there is a standard measurement, whatever it takes to feed enough air to the fuel for idle.....
     
  3. HT60CC

    HT60CC New Member

    Joined:
    Jul 23, 2008
    Messages:
    23
    Likes Received:
    0
    I always set the idle up by turning the screw out until it sounds like it's idling I.E maybe only slightly higher than the amount needed to keep the engine running.
     

Share This Page