Re: Help!! Farmall M Carburetor Troubles

Posted by CNKS on May 19, 2007 at 18:42:02 from (204.249.178.32):

In Reply to: Help!! Farmall M Carburetor Troubles posted by Jerry Vander Till on May 19, 2007 at 15:40:41:

Initial settings are 3 turns out for the main jet and 1 turn for the idle mixture. With the engine warmed up and at wide open throttle, turn the main jet in until the engine stumbles, then out until smooth, plus maybe 1/4 turn more, you want the main jet as lean as possible. Retard throttle to low idle speed, adjust the idle speed with the idle stop screw fast enough so that the engine does not die. Adjust the idle mixture in or out until smooth. Unlike the main jet, turning in richens the idle mixture, out leans it. Advance the throttle to WOT rapidly, the engine should accelerate smoothly. If not repeat your adjustments. If it does not smooth out after a couple of tries, your carb needs to be removed, disassembled and soaked in a good carb cleaner and blown out with compressed air. Put a new Case-IH kit in it. Be sure your sediment bowl is clean and not restricted as Jim indicated. There is also an inline screen in the fitting that the fuel line screws into at the carb.

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