I have a craftsman tractor (17.5 hp ohv, briggs & stratton) which has run fine for a few years now. Just recently though, around the fall season, it stopped working while I was mowing. It still doesn't work right after changing the oil, the air filter, the gas line filter, and the spark plug. To describe the problem, it starts up, runs for a few minutes, then it starts pulsing (sounding almost like the throttle is being pushed down and back up over and over again), then it shuts off. I tried everything I could think of to get it working. Any other ideas to how I could possibly get this working? I am not a mechanic nor am I real great with engines, so I really appreciate any help.
Asked by OrangeBrian