I have a 2001 Ransomes BobCat with a 17 hp Kawasaki. It has a pull start not electric and has the key to turn it off. Recently after mowing when I shut the key off the engine will almost come to a complete stop, but then will start firing again, not completely running but enough so that it lasts anywhere from 5-10 seconds. I think that somehow that the engine is running in a reverse direction because it attempts to travel backwards if I let the pistol grips out into the forward drive position. (while initially if I shut it down and let the pistol grips out, it will travel forward, but once it begins firing again it travels backwards!) I am concerned because the sound it makes is disturbing, almost as though the engine is running without oil. I notice that it seems to do it more when the temperarture outside is hot and the machine has been running for a while.