Well, my dad was riding on the trails and his sled cut out. They opened it up looked at everything, tried to start it up and found out it just wasn't getting any gas. Well, we towed it back to the trailer (luckily we wern't that far away) and after looking it over we couldent figure it out. Finally my dad looked at the valve in the gas line. He turned the valve from the down to the up position. Turns out the valve had vibrated closed. Hehe, an hour wasted and all we needed to do was turn a little valve. The moral of this story is: Don't overlook the simple things