Pull the spark plug Is it wet? No, check for spark, if it's wet...dry it off, (better to use a new plug) then check the oil is it over full & smells like gas? If so change the oil before you try to start it!!!, & you've probably got a bad needle & seat, or bad float. If it's ok check for spark after drying the plug. Got spark pinch the fuel line, put the plug in & try starting it. Won't start tap on the carb bowl a few times with a screwdriver handle then open the fuel line & try again. Good luck!