Garden Tractors - AC 620 front timing marks?

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AC 620 front timing marks?

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=138610
Printed Date: 02 Oct 2024 at 5:22am
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Topic: AC 620 front timing marks?

Posted By: Tracy Martin TN
Subject: AC 620 front timing marks?
Date Posted: 20 May 2017 at 6:34pm

I have a 616 that has a 620 engine in it. On the front of engine, there is a indicator that has a mark to set to mark on front clutch. The Simplicity manual shows these on the 4041 .It doesn't clarify where to align the marks up at timing. I know it should be 20 degrees before TDC using rear engine marks. I don' want to use them because of all the stuff you have to remove. Any help appreciated. Thanks tracy

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No greater gift than healthy grandkids!

Replies:

Posted By: HudCo
Date Posted: 22 May 2017 at 9:13pm

dont you time that there the timing hole on the blower houseing

Posted By: coggonobrien
Date Posted: 23 May 2017 at 8:24am

Tracy, I just timed mine by ear. starts right now and seems to be fuel efficient.

Posted By: Tracy Martin TN
Date Posted: 23 May 2017 at 8:41am

There is a set of marks on the front of the 19.5 Onan. I got the info to align the marks from the Simplicity guys on facebook. Mine seems to have valve chatter in a hard pull uphill. Not sure if it is timing or valves need adjusting. Tracy

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No greater gift than healthy grandkids!