Garden Tractors - Fuel pump

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Fuel pump

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=211622
Printed Date: 16 Sep 2026 at 12:59pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Fuel pump

Posted By: john2189
Subject: Fuel pump
Date Posted: 07 Jul 2026 at 8:35pm

I have a simplicity sunstar with a kohler ch20. The vacuum fuel pump would not work because there was too much crankcase pressure. I did not have the time to rebuild it so I bought the mechanical valve cover pump.
It has been two years now since I put it on and I rebuilt the engine last year.
My question is how long does the mechanical pump work before it is worn out and do any of the pieces of it break off and get into the valve springs, lifters and push rods.
John

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'41 Allis B
'49 Farmall Cub