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Thread: Carburetor Adjustment help

  1. #11
    Member stevericotta's Avatar
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    I'm back with another question/confirmation. So did the o-ring and boot and it's a lot better. The only issue I have and I think its me is when I hit the throttle hard (no load on the bike) to rev it up is falls flat for a second. I think its me because I am used to a bigger bike.

    Also I am about 6 turns out on the mixture screw. I live in Burbank Ca which is about 700' above sea level. Does that sound right to you guys? Here is a picture of the plug. What do you guys think?TWplug 2.JPG

  2. #12
    Senior Member jbfla's Avatar
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    6 turns out is too much. I'm surprised the screw hasn't fallen out.

    Somethine is still wrong.

    jb
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  3. #13
    Member stevericotta's Avatar
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    I hate to say it but that's what I think. Any ideas? I sprayed around the boot again to make sure there wasn't another leak and it was fine. Carb has been rebuilt will all start brand new parts. Any help would be great.

    Thanks!
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  5. #14
    Super Moderator littletommy's Avatar
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    And if you dial it to 2 1/2, what happens?
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  6. #15
    Member stevericotta's Avatar
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    It wont run unless I have the choke open.

    One thing I did notice is on the right side (sitting on the bike) there is a black plug that turns but does move (it takes a flat head screw driver). Looks like the guy I got if from chewed it up. Not sure what that is. Anyone?

  7. #16
    Member stevericotta's Avatar
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    Okay so I just popped out that black mangled piece of plastic and it was for the guild for the carb ""piston" so it doesn't turn when opening the throttle. Could that do it? Is air getting that little slide or is maybe the piston turning ever so slightly when I twist the throttle?

  8. #17
    Senior Member GaryL's Avatar
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    We have heard this more than once. That black plug is the piston slide guide that goes through the barrel and should "NEVER" be messed with. I don't know if it can be replaced and I also don't know if this could be causing your issue. The slide must remain aligned inside the barrel so without the guide pin all bets are completely off. You mention the pilot screw is now at 6 turns out. Lets be sure you are counting correctly. The screw has a straight slot so one turn should be two complete revolutions of the slot with each revolution being a half turn. If you are counting just half turns then 5 half turns is where you should start. On a clock face if you turn it from the 3 to the 9 that is a half turn, turn it again around to the 3 and that is one full turn out. Most TWs run pretty good at between 2 1/2 -3 complete turns. In my opinion your spark plug color looks a bit lean to me.

    GaryL
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  9. #18
    Member stevericotta's Avatar
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    Thanks for the feedback. It looks like from all the research I did last night that plug cannot be replaced. I will try and find a carb on eBay and go from there. Also thanks for the clarification on the turns. Looks like I have been doing it right.

    Thanks!
    Steve
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  10. #19
    Senior Member elime's Avatar
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    What size pilot get are you using? If the needle is 6 turns out then I bet you need a larger pilot jet.
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  11. #20
    Member stevericotta's Avatar
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    I can look when I get home but its what comes with the rebuild kit. Also I found a carb for a 1991 on ebay buts its not a california model. Will that work for my bike?

    Thanks!
    Steve

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