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Bing 64 choke problem

in 912 / 914 Technical Questions 13 years ago
The choke on my Bing 64 carb will not open all the way when I move the lever to off causing the engine to idle faster. I checked the cables travel and adjustment,replaced the return spring. Should the shaft for the choke be hard to turn using my fingers or easy with little resistance? The cable won't push the choke all the way. It just flexes a little. I have duel carbs and they both do the same thing. At full throttle the vibration of the engine allows the choke to open all the way. I would appreciate any suggestion to resolve the issue.

Thanks
Ted Bedard

  • Re: Bing 64 choke problem

    by » 13 years ago

    Hi Ted,
    It is just the o-ring binding. You just need to remove the choke, disassemble it, clean it and replace the o-ring. You can dress the brass shaft and the hole with scotchbrite but do not be aggressive, just a light touch will do. Do not use any lubricant on the o-ring.
    Use a new base gasket and loctite on the 4 screws and you are done.
    Rob
    chokepic.jpg (You do not have access to download this file.)
      
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  • Re: Bing 64 choke problem

    by » 13 years ago

    Thanks a lot Rob. You saved me a lot of time and money resolving the problem. Sometime you can't see the forest because of the trees.
    Thanks
      
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  • Re: Bing 64 choke problem

    by » 13 years ago

    had the same problem with mine when the engine was brand new. I did exactly what Rob recommended but finished up the shaft with a little brass polish after the scotchbrite. Problem solved.

    Bill.
      
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