Garden Tractors - off color, JD 420

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off color, JD 420

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=165464
Printed Date: 26 Apr 2025 at 1:57am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: off color, JD 420

Posted By: Tracy Martin TN
Subject: off color, JD 420
Date Posted: 31 Oct 2019 at 6:52pm

What is the correct valve lash for the JD 420 with 20hp Onan? Thanks Tracy

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No greater gift than healthy grandkids!

Replies:

Posted By: Dnoym N. S. Can.
Date Posted: 31 Oct 2019 at 7:31pm

make sure the piston is at top dead

center when you adjusted them

.008 intake and .013 exhaust

HTH B:-) Dnoym

Posted By: Tracy Martin TN
Date Posted: 31 Oct 2019 at 7:46pm

Thanks, Tracy

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No greater gift than healthy grandkids!