Farm Equipment - Allis b clutch

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Allis b clutch

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=212097
Printed Date: 17 Sep 2026 at 2:10pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis b clutch

Posted By: john2189
Subject: Allis b clutch
Date Posted: 28 Aug 2026 at 6:34am

What clutch would be in a 1942 B? 9” or 8.5?
And would either size fit the flywheel?

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'41 Allis B
'49 Farmall Cub

Replies:

Posted By: PaulB
Date Posted: 28 Aug 2026 at 7:10am

Do you have electric start or crank start only? Electric start needs the 8-1/2". A crank only tractor should have 9", but could have gotten the 8-1/2" changed into it over the years.

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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY

Posted By: john2189
Date Posted: 28 Aug 2026 at 7:21am

It has a starter, so it probably has the 8.5 clutch.

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'41 Allis B
'49 Farmall Cub