Originally Posted by benhogan

locate the bowl beneath the carb. there is a 1/2" bolt holding that bowl.

remove the bolt. the nut as a number of holes on it. clean it with one strand of wire from a wire brush. note that on some mowers, there is an additional hole close to the top of it close to the threads. clean that too.

reassemble and it should run like a top.

don't lose the gasket that goes between the bowl and the bolt. without it, the gas will leak out. if it is broken, pm me and i will send you one.