Farm Equipment - Allis B Help

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Allis B Help

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=107819
Printed Date: 11 Sep 2025 at 3:41am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis B Help

Posted By: Dek Thorne
Subject: Allis B Help
Date Posted: 19 Jun 2015 at 5:52pm

I'm restoring a Allis B for my high school graduation project and I need some advice. when I started working on the tractor the original throttle linkage was unhooked and a cable was run from the carb to the steering column . When I hooked the throttle linkage back up I can only adjust the engine speed for a few notches before the engine speed stays the same. Any help on how to fix this will be greatly appreciated.

Replies:

Posted By: CTuckerNWIL
Date Posted: 19 Jun 2015 at 6:30pm

That engine should only run at about 1450 RPM. If it is not getting there, try lengthening the rod at the throttle quadrant on the steering post. Are the governor weights new or in GOOD shape? The pins and the holes in the weights wear and eventually come apart sending pieces down thru the cam gear Ouch

Low idle should be set by the limiting screw while adjusting the carb air mixture.

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Posted By: Dick L
Date Posted: 19 Jun 2015 at 9:05pm

Start by making sure your linkage is correct and in adjustment.
Here are a couple pictures to compare your linkage with.

If you linkage is correct, with your had throttle pushed all the way forward and the linkage from the carburetor pulled all the way forward the pin and hole should enter to be in adjustment. If it is out of adjustment you bend the cross over arm to get it back in adjustment.

Note: there happens to be two different styles of cross over arm connections.

If the linkage is in adjustment then look at the spring in my first picture to make sure it is correct. That spring is what has to overcome the governor weights that is trying to correctly close the carburetor back to idle. A spring that is light will give you low RPM's. A spring to heavy will give you excessive RPM's.

Posted By: Dek Thorne
Date Posted: 19 Jun 2015 at 10:15pm

My tractor does not have the oil line running to the governor and the pieces that the spring is attached to is different. will that make a difference.

Posted By: Dick L
Date Posted: 19 Jun 2015 at 10:52pm

Dek Thorne wrote:

My tractor does not have the oil line running to the governor and the pieces that the spring is attached to is different. will that make a difference.

No, they both operate the same.