I have the Troy-Bilt XP Model #12AKD39B011 that was running fine it seemed until I bumped into our mailbox. I'm not sure if that is what caused this because you wouldn't think a little bump would do this especially since I have bumped trees and other stuff before with no problems. To me it seems like it's all of a sudden not getting fuel and possibly running very hot for the short time it did run. I'm not mechanical in the least bit so I'm not sure what to look for. The operation manual doesn't show anything about the engine and I can't find the engine manual it refers to. Any suggestions or where I can find an engine manual would be great. Thanks