Engine Trouble The piece the throttle cable goes into !!!!!!!!!!!!!!!!!

Discussion in '2-Stroke Engines' started by dotcom, Jul 27, 2014.

  1. dotcom

    dotcom Member

    I meant clutch cable!!!!!!!!!!!!!!!!!!!!!!!!!! I've heard some different stories about this piece and I recently had a problem with mine being screwed in too much. Is it best to have it unscrewed as much as possible? Im guessing it causes friction on the "piece" that rotates the gear. So what is the best setting for this? thanks in advance
    Last edited: Jul 27, 2014

  2. john doe

    john doe New Member

    Assuming you're talking about the little nut on top of the carby and the similar little nut where the cable sheath meets the grip housing, then those are for tightening slack out of the throttle cable. If you find yourself having to run those all the way out to take up slack, then get yourself a longer cable sheath. Or shorter cable. I don't know.

    However, if you're -not- talking about those little nuts, then I am totally talking out of my ass and you should ignore everything I just said, and then post pics for clarification if possible.
  3. dotcom

    dotcom Member

    Im referring to the piece under the carb that the throttle cable goes into
  4. john doe

    john doe New Member

    have a picture? i'm not totally certain but it sounds like your carb is build backwards from the way im used to seeing and that the same adjustment nut is underneath instead of above like mine is.

    Standard round-slide carby. Snorkel points down, cable feeds through top. These things are super common and what i'm used to seeing on MBs, though i'm sure there are others people use. is what you're referring to similar to that little nut by my finger in the picture?

    Here's the bottom of the same carb. All sealed up, nothing feeds in. If you've got cables going in here then you're using a carby i haven't seen before and i am very intrigued. I wish to see this device and try one out myself.

    At any rate, by taking out that little nut where the cable feeds in I can adjust cable slack. That's all it does. If you find yourself with a ton of slack while that nut is barely even seating, you can probably extend that nut with a second one from an old stripped out carby. In theory, should work. In practice, i haven't tried before so I don't honestly have the foggiest clue. Don't take too much slack though, last thing you need is your engine at running speed while trying to idle.
    Last edited: Jul 27, 2014
  5. dotcom

    dotcom Member

    Ohhhhh my mistake!!!!!!!!!!!!!! I meant clutch clable not throttle cable!!!!!!!!!!!!!!!
  6. john doe

    john doe New Member

    Oh! Yeah generally you don't want your clutch too tight because you'll have slippage. You can adjust the little nut underneath the manifold for that, yes, or you can slip the cable off of the rod and slip that up or down the cable a couple millimeters at a time until it's right. Make sure to screw it back on nice and sturdy. You don't want slack, but you don't want slippage either. In clutch nor in cable.
  7. dotcom

    dotcom Member

    sorry about that. I had you thinking something totally different which confusing me even more. Now im starting to get it but I still don't totally get the piece under the carb that is on the engine that the clutch cable goes through. Before it was screwed in too tight and it wouldn't allow the gear to turn properly until I loosened it. Once I loosened it, the gear moved freely. Why is that? And why do you say make sure to screw it back on nice and sturdy? That gives me the impression that it should be screwed all the way tight but thats not what you are saying is it because when it was screwed in all the way, it would not allow the small gear to move freely. So you are saying just screw it in enough that it stays secure and then tighten the other screw on it. But what exactly happens when its screwed all the way it? Does it rub on something internally which was causing the stoppage of the gear from turning properly?
  8. john doe

    john doe New Member

    That little post and nut (blue arrow in pic below) is mostly a guide for the clutch cable. When you take that little nut out, it pulls harder on the clutch rod. If it's pulling too hard, your clutch slips when you release the lever. If it has too much slack, the clutch won't disengage properly when you squeeze the lever. Use that nut to reduce or increase slack.

    As for my 'nice and sturdy' comment, that was referring to the screw on the tiny brass piece that locks the cable into the clutch rod. (red arrow, pretty out of focus)
  9. dotcom

    dotcom Member

    The clutch cable guide is my concern. I just replaced my bottom end and thought since my clutch cable started to get wacky, I didn't want to remove the cable completely and instead I left the cable in the guide and took the old guide onto the new bottom end which is where my problems started with the guide. Im not sure if I screwed it in too much which was causing the small gear not the turn properly and right now I seem to be having a slightly slipping clutch problem so im trying to figure how to get it right, whether it is the guide that is in too tight or inside the clutch pad assembly thingy is too tight and needs to be loosened alittle.

    take the nut? Guide? out and it pulls harder on the clutch rod?? Im confused. Isn't it the opposite? If I screw the guide in tighter, it should push harder on the clutch rod? If I loosen the guide, it doesn't touch the rod. I think you said if I loosen the guide, it will push harder on the clutch rod.

    So I want the guide not screwed in tight so it doesn't touch the rod underneath, correct?
    Last edited: Jul 27, 2014
  10. john doe

    john doe New Member

    To simplify, if your clutch is slipping, make the cable longer.

    Refer to this thread for a more in depth analysis on clutch rods and cables.
  11. dotcom

    dotcom Member

    So I want the guide not screwed in tight so it doesn't touch the rod underneath, correct?
  12. HeadSmess

    HeadSmess Well-Known Member

    doesnt make any difference, in out, the thing still puts the cable through a nasty angle at the end.

    still yet to have one snap there though, despite the nasty angle.

    stop worrying about something irrelevant :)

    oh no! you B%^%$&!!!!

    i just burnt my crumpet reading this! i hate singed crumpets!
    Last edited: Jul 28, 2014