Ive got a "02" ox66 225, and when I turn the key off, the motor will keep running for about 6 seconds. When I pull the kill switch it shuts off instantly. I think when I turn the key off, I lose power to the fuel pumps, and the motor runs out of gas, and shuts off. Also, when I pull the kill switch, then start it again, it hardly cranks over a half of turn and its running..Has any one ever heard of this???