tomkatohio 1 #1 Posted November 8, 2023 I recently bought a 312-8 from the estate of my deceased nextdoor neighbor. He used it regularly and had it serviced at a local Wheel Horse dealer. I'd like to get it running again. The engine is the Kohler Command CH12.5S - 1935. When I got it, the fuel pump and carb were bothe removed from the engine and parts left in a box. I'm not sure if I have all parts and I haven't been able to find a good diagram showing how the carb and linkage parts fit together. I also noticed that the small low-tension spring that is on part of the linkage (shown in first photo) has broken so I need to know that part number if possible. Hopefully someone can provide a couple photos showing the proper set up of all parts. Thanks in advance! Share this post Link to post Share on other sites
JoeM 7,874 #2 Posted November 8, 2023 I have this doc. Not sure if it helps. it has the single CH in the instructions. throttle-choke-installation-adjustment-guide.pdf Share this post Link to post Share on other sites
tomkatohio 1 #3 Posted November 8, 2023 Thank you - I think this will definitely help with settings. Now need to find that spring! Share this post Link to post Share on other sites
JoeM 7,874 #4 Posted November 8, 2023 this might help kohler web site https://kohlerenginesparts.com/oemparts/l/koh/61854c75855d460764dd76c2/ch12-5-1935-toro-parts Share this post Link to post Share on other sites
tomkatohio 1 #5 Posted November 9, 2023 Thank you JoeM - The diagram gives all the parts but I need to know what hooks up where. I just have the loose parts. I'm thinking the broken spring that is hanging from the bracket in my first photo would be Part #14 in the above diagram - even though the spring drawn in the digram looks much shorter. Share this post Link to post Share on other sites
JoeM 7,874 #6 Posted November 9, 2023 (edited) I believe that spring hooks into the carb throttle close to that dogleg linkage. It keeps tension on the linkage to keep the slop out. I would bend another end on that one with needle nose pliers and use it for now. My son has a CH on a WH and if I get over there soon I can take some pics of how it is hooked up. Stay tuned. Edited November 9, 2023 by JoeM Share this post Link to post Share on other sites
tomkatohio 1 #7 Posted November 9, 2023 Thanks Joe - any photos would be appreciated. I saw a older 310-8 at a local small engine repair and stopped top take a look. Setup was much different from mine. Share this post Link to post Share on other sites
JoeM 7,874 #8 Posted November 10, 2023 20 hours ago, tomkatohio said: any photos would be appreciated here are some pics 1 Share this post Link to post Share on other sites
tomkatohio 1 #9 Posted November 12, 2023 Thanks Joe - These will help. It looks like there was a newer Walbro carb installed at one time. I also found the part in the 3rd photo in the box. I'm not sure what this is Share this post Link to post Share on other sites
JoeM 7,874 #10 Posted November 13, 2023 @tomkatohio it looks like some stuff is missing. the air cleaner base I don't see. That lever I believe is for the choke and attaches to the air cleaner base. Share this post Link to post Share on other sites
