I own a Troy-Bilt Pony riding lawn mower. I hadn't used it in a little more than two years, storing it inside. It had a little bit of old gas in it, though I believe that it had stabilizer in it. I put fresh gas in it, changed the oil, changed the air filter, and changed the spark plug. It started right up in choke, but each time that I put it in "Fast" it quits. I have tried multiple times.
