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Allis Chalmers Discussion Forum

Allis Chalmers B Carb

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08-29-2005 18:00:18

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I have a B that misses under heavy load but runs great otherwise. I have rebuilt the ingnition system and the carburator. I have adjusted the carb as rich as possible with the adjustment screw and it gets better but not great. Can the main jet be adjusted on the front in the bottom of the carb because an old one that I have has an adjustment needle?


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08-29-2005 19:27:39

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 Re: Allis Chalmers B Carb in reply to Larry_IND, 08-29-2005 18:00:18  
some models of the carburetor have the adjustment of the main jet, but not most of them. another think might be to check the timing and see you have the proper advance at full throttle.--- to check the carb for lack of gas, at full throttle, close the choke 10% and see if the drop of air flow helps the operation. if so, you need a little more gas to go with the last bit of air.

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