It would not strat this season..about 7 yrs old but in good shape. I put on a new carb and fuel line / primer tube assembley and gasket. Seems to prime and drain well...will on occasion sputter... has spark. Blew it out to dry new NGK plug as gas was coming out... So to summarize it has a spark....getting gas to engine...no noticible air in tubes. Using 50:1 Amsoil Sabre' and this is a new mix. Any suggestions as I am tired for the day pulling the cord.