travlitt 3 #1 Posted March 30, 2021 (edited) Good evening, I recently I picked up a 418-8 wheel horse tractor. It needs the engine (18 HP 2 cylinder) rebuilt. I have searched for parts by using the model# on the engine (M18QS spes# 24510 Sn.# 1625110676. No results. Some parts supplier wanted to know what series the engine was. I don't know. I appreciate any help on this subject. Thanks Travis Edited March 30, 2021 by travlitt 1 Share this post Link to post Share on other sites
pfrederi 18,454 #2 Posted March 30, 2021 Welcome to Red Square You have a Magnum18 Twin. The supplier is thinking it is a KT17 twin which came in a Series 1 and Series 2. The magnum 18 is almost the same as a KT17 Series two when it comes to internal parts. But there are differences. Parts are not as available for this engine as other Kohlers I am rebuilding mine right now. I am waiting on the machine shop to tell me how far over I need on Piston and rings. Rods i need .010 over. Valves will also be on the hunting list. I am guessing that the rebuild cost in parts and Machine shop for grinding and valves will be around $700...probably more. I have started a thread on the project. i have done some singles but the twin is a different and more difficult animal. Check Pat's Small Engine website for some of parts available http://www.psep.biz/store/kohler_rebuild_kits.htm. They do not have many oversize parts. Also Brian miller has some parts. http://gardentractorpullingtips.com/catalog.htm Are you pllanning on doing eh work yourself??? 1 1 Share this post Link to post Share on other sites
Pullstart 65,172 #3 Posted March 30, 2021 Do you have any pictures of your new machine? We like those! Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,323 #4 Posted March 30, 2021 Welcome to the forum. Replace the QS with a dash (-) https://www.partstree.com/models/m18-24510-kohler-magnum-engine-made-for-wheel-horse-18hp-13-4kw/ Share this post Link to post Share on other sites
travlitt 3 #6 Posted March 30, 2021 You all are the best. With your help I am able to find the parts diagram for this engine. I searched by using M18-24510 with good results. Again thanks. Pictures later. 2 Share this post Link to post Share on other sites
oliver2-44 10,486 #8 Posted March 30, 2021 Check the Isavetractors web site. he has some aftermarket parts for kohler Twins. Share this post Link to post Share on other sites
