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Zenith Carb - How to tell what model

E

ETNFARMBOY

Member
I have a Zenith carb from a Super C apart. It must be a replacement carb as there is not a brass tag to identify. As I understand there are several different models that are basically the same. So how do I tell from the few casting numbers that are on it as to which model I have in front of me? Thanks
 
Yes I am real sure. It was cleaned well before starting disassembly and after looking at IH parts online I am sure it does not have a tag. The other Super C I have I know has a replacement carb and it has no tag either. Not to say I'm not missing something but there is not a tag on the carb.
 
www.caseih.com has the diagrams and part numbers, look at the shape of the bowl.
 

The newer, replacement Zenith carbs have a tag that is held with one of the screws that hold the carb together. A good way to get the correct kit is to look at pictures of various Zenith kits and compare the gasket you have with the gasket in the picture. If the gaskets match, it will be the correct kit.
 
It is if it has the original carb, and it is a good starting place, because the gaskets are not interchangeable. And, my CaseIH dealer keeps nothing in stock for old tractors except oil filters, thus there is nothing to measure. Zenith does make a lot of carbs, so the buyer has to be careful. I think I can figure it out looking at my carb and the diagrams. Most, not all of the kits fit more than one model. I think for the most part only the jets will be different, and I usually don't mess with those.
 
CNKS: The gaskets on the two different Zenith carbs used during 130 production are exactly the same, yet the needle valves are different length. Yes, during that two year production run, two different Zenith carbs were used and the only difference is length of needle valve. Only about 1/32" yet the wrong one will leak. After three years of trying to make one work, I took carb to dealer in two pieces. Got a good partsman that day, willing to see what the difference is. We compared every piece in the two kits. Only the needle valve was different. I left that day with the different needle and seat from the one I had. 130 hasn't leaked since.
 
Hugh, I should stop with the Super A, it gets more complicated after that. Referring to the parts diagrams on the CaseIH web site -- you are correct, sort of. Since the web site does not show the engine for the 130, I had to look up C-123. There are actually 3 Zenith carburator "assemblies" listed with the 130 carbs, two of those have the same needle and seat (gas and distillate) at least the part numbers are the same. The 3rd carb is for the T4 crawler, it has a different needle and seat. Since you did not have your 130 new (I assume you didn't) is it possible that yours had the T4 carb on it when you bought it (wierd)? OR--? I'll repeat the first sentence in this post.
 
I had the 130 since new. The local CaseIH dealer found two carbs for 130, each of them with different needle valve.
 
my english is no so good. i live in argentina and i want to know abaut a carburator "zenith". it has no other inscripcion in his body, it works horizontal. can i ask you in spanish? it will be better for me. is there any place whith all pics models about it? it has one part made in iron and another in alluminium, diameter size 36 mm. somebody told me it was in use in formula 1 in the 50´. can it be true? cxan you help me ? thanks you.
 
For the record, my 1966 original Zenith (I have a 140) does not have, nor did it ever have, a brass tag. The numbers 12911/68X7 are simply engraved into the upper casting, right above the bowl. I had looked in vain for a brass tag for years, and despaired of getting my carb numbers. I only found the engraving when I eventually overhauled and cleaned it up using a 'best guess' rebuild kit that turned out to be exactly right.

I don't know how many Zeniths have no tags, but mine doesn't. There is no way that is not the original carb, no other wrench has touched that machine but me.
 
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