CCW 1,206 #1 Posted October 21, 2023 I have an opportunity to purchase a Kohler M10s 461550. Looking through the manuals section I found "1993 310-8 model 73320 - Using M10S-461545". Can I assume the M10s 461550 is newer and it should replace my 35 year old M12 that is now burning quite a bit of oil. 1 Share this post Link to post Share on other sites
pfrederi 17,147 #2 Posted October 21, 2023 Those are Spec #s to determine age you need the serial number 1 Share this post Link to post Share on other sites
CCW 1,206 #3 Posted October 21, 2023 2 minutes ago, pfrederi said: Those are Spec #s to determine age you need the serial number Believe this is the serial #: 2412406383. Share this post Link to post Share on other sites
pfrederi 17,147 #4 Posted October 21, 2023 461550 was produced for Ingersoll Rand Share this post Link to post Share on other sites
953 nut 51,735 #5 Posted October 21, 2023 Not necessarily, the spec number will tell you what was used on that engine to meet the customer needs. The crank shaft may be longer or shorter or may have a smaller diameter. The engine may not have a thrust bearing for the PTO. Or it could just be a different color of paint, You need to find out what the differences are. 1 Share this post Link to post Share on other sites
J854D 126 #6 Posted October 21, 2023 @CCW, using the serial number that you posted, the date of manufacture of the engine is Wednesday May 4, 1994. Hope that helps! -JD- 1 Share this post Link to post Share on other sites
CCW 1,206 #7 Posted October 21, 2023 2 minutes ago, J854D said: @CCW, using the serial number that you posted, the date of manufacture of the engine is Wednesday May 4, 1994. Hope that helps! -JD- Thanks. It is what I was initially looking for, but the other postings are making me take a closer look. 1 Share this post Link to post Share on other sites
Ed Kennell 35,809 #8 Posted October 21, 2023 2 hours ago, CCW said: M12 that is now burning quite a bit of oil. You might be better served to determine the cause of the oil burning . broken or worn rings clogged breather 2 Share this post Link to post Share on other sites
CCW 1,206 #9 Posted October 21, 2023 12 minutes ago, Ed Kennell said: You might be better served to determine the cause of the oil burning . broken or worn rings clogged breather Actually I agree with this idea. Although I could rebuild the engine on my own and at one time had students do that I have very little interest in doing it now. I have reached out to an automotive teacher I used to work with to see if he might be interested in the project. Waiting to hear back. 3 1 Share this post Link to post Share on other sites
ri702bill 7,340 #10 Posted October 21, 2023 Or, there are members on the Forum that specialize in rebuilding Kohlers - give @richmondred01 a shout - he may even have an exact replacement ready to go....... Bill 1 Share this post Link to post Share on other sites
richmondred01 2,205 #11 Posted October 21, 2023 10 minutes ago, ri702bill said: Or, there are members on the Forum that specialize in rebuilding Kohlers - give @richmondred01 a shout - he may even have an exact replacement ready to go....... Bill Yep I can rebuild yours or I have a few m10 and m12s waiting to be rebuilt to order. 8-10 day turnaround. PM me for details. 1 1 Share this post Link to post Share on other sites
CCW 1,206 #12 Posted October 21, 2023 @ri702bill Thanks for the tip about @richmondred01. 2 Share this post Link to post Share on other sites
pfrederi 17,147 #13 Posted October 21, 2023 Kohler parts shows same crankshaft kit number for both engines. 47 142 02. All magnum singles have ball bearing so the PTO end thrust is not an issue 3 Share this post Link to post Share on other sites
