Farm Equipment - b fuel line to carb

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b fuel line to carb

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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=136695
Printed Date: 08 Jun 2025 at 2:34pm
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Topic: b fuel line to carb

Posted By: Tom Elder
Subject: b fuel line to carb
Date Posted: 28 Mar 2017 at 5:43am

I can not get it to not leak .The fitting coming out of the carb is not anywhere near tight at the horizontal position.I am afraid I will kink the steel fuel line if I go any further ,i am already down to about 5 o clock .Is there a fix? thanks ahead of Time
Tom

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2 1949bs,one with belly mower one with side sickle bar

Replies:

Posted By: Steve in NJ
Date Posted: 28 Mar 2017 at 10:04am

Inspect the inlet threads to make sure they're not stripped. Might be leaking from there and dripping off the fitting making the fitting look like its leaking. Also inspect for a hairline crack around the inlet casting itself. If the threads and casting are okay, and it is the tubular line, you can use the original line for a pattern and make yourself a new line out of brake tubing. Pick yourself up two 1/8 npt x 1/4 tube fittings and install them in each side. One in the Carb, the other in the sediment bulb. Using an inverted flare brake line and snugging it up in each fitting should take care of that leak for a loooong time. If you don't have the tools to do the job, we offer a replacement line kit just as I explained if interested...
Steve@B&B

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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Posted By: steve(ill)
Date Posted: 28 Mar 2017 at 5:02pm

take the fitting out of the carb, wrap 4-5 layers of telfon thread tape around the threads,.. screw it back in and stop at the position you need...... few thousandths of tape should make it tighten up and fill the gap where it leaks.

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Like them all, but love the "B"s.