william kirk 11 #1 Posted March 6, 2018 I have a k301 with a 1 inch shaft for drive and clutch , motor is bad, I bought a short block k301 to replace it, it has a 1 1/8 shaft....shouldn't all k301s have the same shaft size..... Share this post Link to post Share on other sites
Achto 26,199 #2 Posted March 7, 2018 2 hours ago, william kirk said: I have a k301 with a 1 inch shaft for drive and clutch , motor is bad, I bought a short block k301 to replace it, it has a 1 1/8 shaft....shouldn't all k301s have the same shaft size..... Actually I think that the 1 1/8" shaft is more common on the k301. Shaft size can very though, depending on what the customer ordered to fit their application. 1 Share this post Link to post Share on other sites
pfrederi 17,040 #3 Posted March 7, 2018 I counted at least 54 different crankshafts for K301s... 1 Share this post Link to post Share on other sites
richmondred01 2,190 #4 Posted March 7, 2018 It’s all about the spec number of the engine. Kohler had numerous applications they were used in gravely, Jacobson, cadets, Deere’s, snow blowers, generators you name it and in the 60’s and 70’s Kohlers were king. They still are king in my mind......... 2 Share this post Link to post Share on other sites