theoldwizard1 2 #1 Posted December 28, 2010 The following questions are regarding Kohler Magnum (M series) engines. Can someone list the similarities and differences between K and M series engines ? It seems that K series engines are getting pretty scarce, especially K341AS. While not correct for a restoration how easy is it to replace a K engine with an M ? Any specific prefix/suffix/submodel to lok for ? Share this post Link to post Share on other sites
pfrederi 17,147 #2 Posted December 28, 2010 The only really significant difference that I see is the M uses a magneto instead of a battery ignition system. Share this post Link to post Share on other sites
Kelly 1,028 #3 Posted December 28, 2010 Well the AS and M use different oil pans and will not interchange directly,(M is the same as a S block oil pan wise) but most of the time a M will fit in the place of a AS block on a WH, other brands NO they will not interchange, yes the M has mag. ign. uses a different starter, and a few other things but if you get a complete engine it should be a easy swap, as for spec no. thing, what you need to look for is crank size, most WH 10hp and up use a 1 1/8" crank, under 10hp they use 1" so if you pick up a M engine from a tractor that uses a 1" crank, you can use parts from a 8hp engine to do the swap, there are some 1" crank parts that are hard to find ie.... Hydro pulley, but most are easy, anything else??? Share this post Link to post Share on other sites
