190XT Carb Replacement/Rebuild
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=209509
Printed Date: 28 Dec 2025 at 10:54pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 190XT Carb Replacement/Rebuild
Posted By: MadCow
Subject: 190XT Carb Replacement/Rebuild
Date Posted: 27 Dec 2025 at 9:53pm
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The carb on my 190XT is missing the idle jet and idle speed screws, at least I'm pretty sure. Is there a super complete kit that would have these, or is there a better replacement (zenith)? |
Replies:
Posted By: DrAllis
Date Posted: 27 Dec 2025 at 10:09pm
| You have a Holley ?? I'd imagine accurate parts would be difficult to come by, but I could be wrong. |
Posted By: MadCow
Date Posted: 28 Dec 2025 at 1:25pm
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I guess not. It looked like the manual so I didn't question it. Bendi9c 2-101? Is this worth keeping or is there a better/more standard carb that I can replace it with that'll be more serviceable?  
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Posted By: DrAllis
Date Posted: 28 Dec 2025 at 2:02pm
| I see the idle mixture screw. It isn't missing. The idle speed screw on the throttle shaft on the back side towards the eng block?? That would be a simple machine screw from a hardware store. An Idle jet ? ?? that's internal... Does the tractor now run ?? The numbers you give are a casting number which means nothing. Zenith 13303 and 62AJ12 do mean something. There is a place called The Carburetor Doctor that can fix you up. |
Posted By: MadCow
Date Posted: 28 Dec 2025 at 2:32pm
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I guess my issue is I don't know what carb this is so I don't know what screw is which or which direction to turn them. I have no manual. There's this tag on the back? Does that say what carb this is?  I see the main mixture, but no idle mixture. This screw on the front is not a mix screw. Idle adjust may be on the back but I didn't see anything.  It doesn't idle. And doesn't run well. The carb needs rebuilt or replaced. But I can't tell what carb this is, it looked enough like the manual I just assumed it was what the manual said it should be. I'll check the carburetor doctor. Thanks! |
Posted By: DrAllis
Date Posted: 28 Dec 2025 at 4:31pm
| I told you what it was with the numbers I gave you. The angled adjustment screw is for idle speed mixture and normally is 1 1/2 turns out. The other screw holds the venturi in place and is a nothing burger for you. Main jet is fixed/non-adjustable and is in the bowl. Zenith/Bendix is the brand. |