I have a 25 h.p. Kohler in my Lazer. It has 250 hours on it and it just purrs like a kitten. I bought the machine used with 25 hours on it last June so I've been pushing it pretty good. I know of two other owners with the same machine and over 400 hours and no problem. Any chance that Kohler had a bad run of engines. Anybody else out there happy with there Kohler 25?