Farmall 100 carb?

Tue Jul 24, 2012 9:39 pm

Carb sized.jpg
Can anyone tell me if this carb is the right one for this tractor? Also if there is anywhere I can find instructions on adjustment.
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Re: Farmall 100 carb?

Tue Jul 24, 2012 10:41 pm

Might possibly be a Carter UT carb. They were used on Super A's, so they were probably used on the 100 which superseded the Super A.

Subject: Carter UT carb kit help

Rudi wrote:I redid my buddy Gord's Carter UT for his Super A last summer I guess..


Carter UT Carb Kit

we got the kit from out of San Diego. Carlos was pretty quick to deliver and it is the right parts. The Super A is running fine now and is up for a plowing job at the new farm in a couple weeks :D See the Super A Carter UT Carb Starvation Issues thread.

Re: Farmall 100 carb?

Wed Jul 25, 2012 6:46 am

I have no idea if your carb. is correct for the 100, or not, But it's a Marvel Schebler model TSX. The TSX was used on an awful lot of small - mid sized tractors. On a specific application the TSX was followed by a 3 digit number to identify it to that application. In your picture, everything looks right, so I'm guessing it's correct.

Re: Farmall 100 carb?

Wed Jul 25, 2012 7:47 am

Agree with Gary. Marvel Schebler was my first thought but changed it due to the Carter Carbs being used on the Super A. If you look at this document - Marvel Schebler Carbs - TSX, it goes into some detail on the carb itself. This also confirms that it is a TSX.

Sorry for the confusion.

Re: Farmall 100 carb?

Wed Jul 25, 2012 10:09 am

It looks like the one on my 100.


Re: Farmall 100 carb?

Wed Jul 25, 2012 9:04 pm

Thanks guys, I did some digging around and found a whole section on these carbs on a ford 8n site. complete with rebuild instructions. the only thing I wonder about now is the" economy" adjustment? What is that about? I gave it a quick once over now that I know what adjustments are what, and she is running down right refined. Starts right up on low idle position first crank. Now if I can just get some play out of the governer arm I would be in fuel system heaven!

Re: Farmall 100 carb?

Thu Jul 26, 2012 6:47 am

"Economy adjustment" is simply referring to the high speed fuel mixture, (the large screw). When doing light duty, you can often lean the mixture a bit and use a little less fuel and keep the spark plugs cleaner. Since this ( and most tractors ) is a 2 circuit carb. with no power enrichment circuit, it will tend to run rich under light duty, when adjusted for maximum power.

Re: Farmall 100 carb?

Thu Jul 26, 2012 7:29 am

I see, thanks for the help!