Well, an update. I called the service guy today, and he said that he ran it yesterday for an hour, mowed for about 20 min, let it idle for quite a while and was unable to reproduce the problem I'm having. Now, granted it wasn't as warm yesterday as it was on Sunday when I had the problem, but I figure it should have done it again, as when it happened the first time, it wasn't that warm either. He said he's having them pull the carb and do a thorough cleaning on it. I mentioned the fuel pump and the magneto/coil, and he said he checked the fuel pump and it was fine. Gawd I hope it's fixed this time. /forums/images/graemlins/frown.gif