I have always been a good fan for the Kohler engine, (Until) Just got a Troy Built mower with a Kohler SV590 Courage engine in it for a repair job. Leaking oil bad. Disassembled the engine today and found large cracks in the engine crankcase and as far as I can see no reason for it. Seeing I can't find another crankcase I am going to see if I can get it welded tomorrow?? I don't know very much about the Kholer Courage engine but it looks very poorly built and cheap.