I was given a lightly used scag wildcat stwc52a-25ka with a hydro leak. Simple fix! Got it running and realized the output shaft seal was out on the motor. Changed that out and fired right up. Mowed about 45 minutes with no problems. Parked it that night and fired it up the next morning, but forgot to turn the gas on. It died, but fired right back up. Moved it ten feet and it died again. It won't do more than a sputter at full throttle since. I've replaced carb, coils, plugs, fuel filter, oil and filter. None of this changed the symtom. The fuel pump seems to throwing a good stream of gas. I'm at a loss.