I have a Kohler CH20-64631 Command 20 Horizontal Shaft motor on an "unknown" (was repainted and has no info) Cub Cadet Tractor. It starts fine, runs like it gets too much fuel then shuts off. It won't restart for about an hour. Just seems likes its flooding out. Plugs are black with some buildup. Has a new Kohler fuel filter, and two new plugs.