Question about 2006 kawasaki KX 450 F

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When I am at near idle on my o6 KXf450, then snap to full throttle the bike stalls. At quarter to full, the bike runs fine.

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  • coqbcconnell Jul 02, 2009

    Thanks Tom, but the bike ran great at the same track, with the same needle setting weeks before. I tried adjusting it just to make sure.......but same problem.

  • coqbcconnell Jul 02, 2009

    Thanks Keith! what a pain to get the carb out, but new acc. pump kit did the trick.

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It sounds like the accelerator pump on your carb isnt working properly..i hope this helps..Keith

Posted on Jul 02, 2009

  • Keith Parker Jul 04, 2009

    Im glad i could help..it makes my day to help others...Keith

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Pull the slide out of the throat of the carb. Move the clip on the jet needle one notch lower. This will richen the low end mix.

A “very helpful” rating on this answer? Thanks!

Posted on Jul 02, 2009

  • tombones Jul 03, 2009

    My suggested fix was a try at a "no cost" solution. Next step would have been the pump. But ignoring that, you really should re-rate the solution given by justkeith1. His answer solved the problem didn't it? I would call that a "Very Helpful" answer. What the heck, a better rating is not going to cost you anything!



    Blessings, tombones49

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1 Answer

How do i adjust the carbarator on my poulan chain saw stalls out if running at full throttle when cutting


Ok, so there are 2 adjustment needles on the carburetor. A H and an L... If your saw is idling fine you won't have to worry about adjusting the L needle.

Your focus will be on the H... the high.

Firstly, if there is any plastic covers on the adjustment needles, remove them. Usually red and white in color... or just white. They serve no purpose(EPA regulations for California). Now adjustart in quarter turn increments.. turn the screw to the right until snug, now back it out 1 full turn. This is your starting point. While holding the trigger all the way in, turn the needle counter clockwise in quarter turn increments, use your ear to tell when you have peak performance.

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Rough idle, bogs when I give it throttle then dies


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Go back to the carburetor adjustment screws and snug them down gently. Do not use force on those screws or you'll damage the needle valve seats. Turn both screws out one and a quarter turns out and start the saw. The motor should stay running.... if not adjust the screws until it stays running. Turn one screw in until you hear the motor start to stall, then turn that screw out just a little bit. turn the other screw in until the saw starts to stall, then turn that screw out a little bit. Now if the saw bogs at full throttle, turn one screw out one quarter turn. See if the saw runs at full throttle... if not turn that same screw in to where it was and try the other screw the same way. If you're good, you can adjust the screw while the saw is running to get the best full throttle run. This is not an exact science, and it takes time and many adjustments to get the saw to idle and run at full throttle. Good luck... and have patience.

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1 Answer

Idle seems too low. runs great, when no throttle, stalls. maybe idle too low. no manual, need to know where idle adjustment screw is


If you haven't already adjusted the carb there are usually 3 adjustments. H - adusts performance at full throttle (how it cuts in the wood). L - adjusts performance at idle and accelleration to full throttle.It sounds as though those are fine. The third adjustment T - is the throttle or idle speed (often away from the other 2). If my saw that is the one adjustment I'd make. You supplied no make or model, it is difficult to provide what you requested without them. HTH
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Yamaha 2002 TTr 250


Hi hoeygatt

Look around your bike near where the throttle cable meets the engine, when you pull the throttle, the cable pulls a quarter circle piece of metal which is connected to a spring, then connected to that should be a screw, that is the idle screw, turn it very slightly, usually clockwise to make the idle higher, and this should sort out the problem.

Please remember to rate this solution as FixYa!

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BearWeb

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1 Answer

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The main jet need cleaning.(you should clean them all though)

Main Jet: Main jet comes into play at three-quarters open to full throttle conditions. CRITICAL to high-speed engine operation. Not only does it meter the gas into the engine, it can aid in cooling the engine as well.

Please rate this Fixya

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1 Answer

Stalling out


u have the mixture screw wound in to far. its normally located on the bottom of the carb. try winding it out half a turn at a time once the bike has warmed up. also turn the idle screw out a quarter of a turn at the time its in to far thats why it idles at low revs. the choke is needed to keep the air fuel mixture right thats why u are having to leave it on for so long. hope this helps.

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