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801 ford tractor carburator adjusting

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coyboy

10-20-2007 15:01:12

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Will someone PLEASE HELP !!!!!

I am trying to adjust the carburetor on my 801 ford tractor but I don"t know which adjustment screw does the air or gas

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ErnieDD

10-20-2007 16:02:34

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Re: 801 ford tractor carburator adjusting in reply to coyboy, 10-20-2007 15:01:12

They are both gas. Idle and power mixture. Idle will accept a small screw driver, power is at the base with a cross bar or a hole if the cross bar fell out.

Drain the bowl by removing the plug at the bowl base, I seem to remember it is a 7/16. You don't want to be fighting a bowl of snot and water.

Tune the idle first, max speed or highest vacuum. Power is best done at load, belt work, generator, dyno, tune for peak power then detune rich 1 HP. You don't want to be lean, you will burn a valve. Don't ask me how I know.

A stumble from idle to power on the throttle indicates a lean condition.

Tweak idle speed after tuning.

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Bob

10-20-2007 16:00:00

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Re: 801 ford tractor carburator adjusting in reply to coyboy, 10-20-2007 15:01:12

The screw up high in the upper half of the carb, pointing sideways is the idle mixture adjustment. It's effects are most noticeable at slow idle.

The (larger) screw, lower down, pointing down at an angle, is the LOAD ajustment screw, which controls the mixture at higher speeds and loads.

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