B model won't start
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=194027
Printed Date: 10 Sep 2025 at 9:23am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: B model won't start
Posted By: masondan
Subject: B model won't start
Date Posted: 12 Mar 2023 at 1:58pm
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I have a 1939 B model, hand crank, it ran two years ago I just rebuilt the carb, magneto. I have great spark and fuel. Tractor won't start, get a little smoke out of the stack, but won't kick over. I tried towing it with another tractor, still nothing. Any help would be greatly apprceiated
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Replies:
Posted By: ac fleet
Date Posted: 12 Mar 2023 at 2:09pm
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sounds like m 38 B ! LOL! --AND my WD-45! AND my C! --- I'm about to give up on ac tractors! ------------- http://machinebuildersnetwork.com/ |
Posted By: WF owner
Date Posted: 12 Mar 2023 at 3:53pm
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The first thing I would suspect is timing. Assuming the mag is timed right internally, make sure the wires are connected to the cylinders 1-2-4-3. I could probably give you step-by-step instructions, but this link explains it better than I could. http://dueyschutter.freeservers.com/photo6.html" rel="nofollow - Allis Chalmers Page 4 (freeservers.com)
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Posted By: steve(ill)
Date Posted: 12 Mar 2023 at 4:08pm
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since you have spark and fuel, it almost has to be the timing...Check plug wires, check impulse operation , check static timing. ------------- Like them all, but love the "B"s. |
Posted By: masondan
Date Posted: 12 Mar 2023 at 5:07pm
| Thank you, I don't have a "C" or "A" on the fiber wheel. So I'll try putting the beveled tooth at 12 o clock. That might be the problem |
Posted By: steve(ill)
Date Posted: 12 Mar 2023 at 5:51pm
yep.. if your missing the "C", then put the bevel tooth at 12 o'clock... and make sure the outside LUG is in this position and install the cover. ------------- Like them all, but love the "B"s. |
Posted By: masondan
Date Posted: 16 Mar 2023 at 5:49pm
| Got it running today. Thanks for your help, Fellas |