Garden Tractors - Kohler M20 ?

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Kohler M20 ?

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=124279
Printed Date: 07 Jul 2024 at 3:24am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Kohler M20 ?

Posted By: tractorman
Subject: Kohler M20 ?
Date Posted: 07 Jun 2016 at 7:13pm

What will cause this engine to surge/ pulsate under load with tractor and mower 48:"

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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190

Replies:

Posted By: Steve in NJ
Date Posted: 11 Jun 2016 at 8:42am

Bad spark plugs or wrong heat range, lean condition, dirt in the enrichment circuit, (which causes the lean condition) dusty, dirty partially clogged air filter. There's a few for starters. Check the easy stuff first. That's usually what it is.... HTH

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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: eslickl
Date Posted: 25 Jul 2016 at 5:59pm

I had similar prob. First mine would stumble and back fire under load after running for 3 minutes, I finally blew into the fuel cell thru the fuel line and that fixed that. (something plugging the fuel out let in the tank) Then I had a prob with running at wide open throttle with load. I have gone thru the carb and lowered the float, just a little and that has seemed to taken care of that. Have since mowed a 5 acre yard with no prob.

These are just ideas, and they worked for me.