[Farmall] Farmall H Carburator Adjustment

[Mike Sloane]

The three screws are "low idle speed", "low speed mixture", "high speed 
mixture". The low idle speed screw pushes against the throttle (and can 
be seen to do that looking at the carburetor carefully), and cranking it 
in will be one cause of the engine running only at high speed. The other 
two should be turned all the way in (gently), and then backed off about 
a turn for the initial setting, then adjusted for best running.

The other typical reason for only running at high speed is usually a 
stuck/binding governor linkage. But you could also have problems with 
governor itself (although not as likely).

If you don't have one, I again suggest to all IH tractor owners that 
they go to the Binder Books website (www.binderbooks.com) and order an 
owner's and/or a service manual. The manuals are excellent and the 
quality of their reproductions is as good as the original (unlike some 
other vendors' offerings).

Mike

On 7/8/2010 10:20 AM, stubb02 at aol.com wrote:
>
> Greetings,
>
> My Farmall H will start but only runs at a high RPM.  I recently took
> the lower part of the carb off and thoroughly cleaned the internals
> and bothl adjustment screws.  I am not sure what the two adjustment
> screws do nor am I sure if the high rpm problem is with the carb of
> the governor.  Actually there are three adjustments on the carb.  One
> of them is in line with the governor.  As you can see, I am a novice.
> Any suggestions would be appreciated.
>
> John
>
>
>
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