Looking at the orginal K-361 engine on my PK and there are very few parts available and I would like to change over to something else. I called my local Kohler dealer and they told me that there is not a replacement for this engine in the Kohler line or any other line of engines he has. I could change over to one of the new Kohler 18 (single or twin cylinder) but there is no way to put the front PTO on the new engines. I am considering getting rid of the belly mower and just using the tractor for pulling and garden work. I can always use my Gravelys for grass cutting and bush hogging. Does anyone know of an engine that will fit this tractor? The replacment will have to have the boss cut in the crankcase for bell housing aligment and have the correct crankshaft size.