Engine for a 918H.
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=133692
Printed Date: 10 Sep 2025 at 11:21am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Engine for a 918H.
Posted By: KevinON
Subject: Engine for a 918H.
Date Posted: 12 Jan 2017 at 2:32pm
I was wondering if anyone had the model and spec # for the Kohler Command 18HP engine that went in the Agco Allis 918H? I have one of the early TriAd engines that has expired. I would like to get a drop in engine for it. Mine is missing the model and spec decal. Thanks!
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Replies:
Posted By: Bill(MO)
Date Posted: 12 Jan 2017 at 7:57pm
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MODEL# CH 18 S SPEC# 62513
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Posted By: KevinON
Date Posted: 12 Jan 2017 at 7:59pm
Posted By: ac fleet
Date Posted: 14 Jan 2017 at 4:46pm
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That is the same engine that got put in my 917-h,-- and I wish they would have left the original 17 in it!---The 18 is a pain in the a$$ to work on.---engine has to come out to get to anything behind the shrouds! Good luck on yours! lol! thanks; ac fleet
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Posted By: ACmowerguy
Date Posted: 19 Jan 2017 at 11:38pm
I like the command engines. They have a better lubrication system than the old cast-iron twins and are much lighter to move around when working on them. I will admit I really do like the sound of the cast-iron KT-twins in the older ACs.
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10 various B-series garden tractors, AC Homesteader8, 416 hydro,710 gt, 914, 916H, 917H, 920D, and many misc attachments
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Posted By: orangereborn
Date Posted: 09 Sep 2025 at 2:02pm
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Tag on to this older conversation....I have a 918 AGCO that has a dead Kohler Triad...Have a couple of Vanguard 18hp and wonder where to get install/conversion kits.. Is this a viable way to go?? Or is rebuilding the Triad possible..Thanks....Dale
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Posted By: acken
Date Posted: 09 Sep 2025 at 7:28pm
The early Triads usually died when they dropped a sleeve from overheating.
The overheating was commonly caused from valve cover leaking oil, then the grass/dust stuck to it plugging the fins. I don't know if any parts are available other than maybe used. You might try Small Engine Warehouse for components to repower with B&S Vanguard. Don't get rid of spacer under engine as that is needed for some repowers.
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