Throttle problems?

Discussion in '2-Stroke Engines' started by geebt48cc, May 25, 2010.

  1. geebt48cc

    geebt48cc Member

    All is good, but for some reason on the (48cc Skyhawk 2/stroke) throttle spring jams and then has alot of play of cable on both ends. ..............any ideas

    PS- It's only about 320 miles old. Everything is checked & double checked,lubed,etc.

    Last edited: May 25, 2010

  2. motorpsycho

    motorpsycho Active Member

    either the throttle slide is sticking, or the cable is stretched out.
  3. geebt48cc

    geebt48cc Member

    Yes, I was thinking that throttle slide( holds spring with C-clip & pin) was acting a little hard to slide into the top of carb. So, what would you do?

  4. motorpsycho

    motorpsycho Active Member

    you might have to use some sandpaper on the slide to make is fit the bore of the carb better. sand the slide on all sides, going with the shape of the slide. i would use like 400 grit sandpaper because you don't want to remove a bunch of material, you just want to smooth it out. it shouldn't take very much to get it smooth and sliding free in the bore of the carb.
    sometimes tho, when the cap on top of the carb gets screwed on and tightened, the carb body may distort slightly, so that could be part of the problem as well. the slide should move up & down in the carb (with your fingers) very easily and smoothly, and it should only have a very slight amount of resistance.
  5. geebt48cc

    geebt48cc Member

    Ok, I'll try that with 400 grit on the slide. So, should it be about to slide freely?...............It moves some now, but very labored. (Uno, while doing throttle is working fine, it will stick into whatever position)

    Last edited: May 26, 2010
  6. Al.Fisherman

    Al.Fisherman Active Member

    Should bottom out with MINIMAL effort. Check the top section, you may of crushed the threaded section if tightened too much. Snug the top, do not over tighten. If the cable is longer then the casing (casing can move between stops), the cable needs to be shortened.

    motorpsycho...didn't read your whole post before my fingers started .....:)
    Last edited: May 26, 2010