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Zenith clone

Farmall Super A, AV, 100, 130, & 140 1939 - 1973
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lolbell
Posts: 42
Joined: Sat Mar 06, 2021 9:24 am
Zip Code: 35555
Tractors Owned: 1976 140
1964 140
1979 140
Circle of Safety: Y

Re: Zenith clone

Postby lolbell » Tue Mar 26, 2024 9:49 am

I learned a lot about updraft carburetors while talking to an elderly gentleman over the weekend. Vacuum leaks anywhere on the intake system can cause all kinds of problems. I have rebuilt several Zenith 12911 carbs with good results. The one I am dealing with now is warped allowing for a vacuum leak. My understanding is this can cause it to run rich? In the meantime I got and installed the above mentioned USA made clone. The tractor runs like a top. IF we can get the damaged jet out and repair the threads on the old one I’ll repair the warpage and have a spare.
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workinonit
Posts: 38
Joined: Sun Apr 18, 2021 7:22 am
Zip Code: 29591

Re: Zenith clone

Postby workinonit » Wed Mar 27, 2024 6:25 am

what are you using for a rebuild kit?
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lolbell
Posts: 42
Joined: Sat Mar 06, 2021 9:24 am
Zip Code: 35555
Tractors Owned: 1976 140
1964 140
1979 140
Circle of Safety: Y

Re: Zenith clone

Postby lolbell » Wed Mar 27, 2024 9:00 am

The economy kit from McDonald. Not much to them if the jets are ok. Needle and seat and new gasket
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