I just picked up 2004 Bayou 250 with very low hours. It has been sitting for at least 4 years, with a cracked case around the oil drain plug. I was able to repair the drain plug, but when I try to start it, It fires right off when I push the starter button, but when I let go of it, it stalls. Again, when I restart it, and hold the button in and keep it in it will run. But again, as soon as I let go it STALLS! ! ! ! H E L P, P L E A S E ! ! THANKS.