This motor shut off while in use and I could not re-start. Took it to my friend, he said water in fuel. He changed plugs, cleaned carb and started off of different tank. It ran fine for him. From there the motor sat a few months, until I bought a new tank and hose. Tried to start.....nothing. Took it back to my friend, the only way it would start was with trottle almost wide open. Would only stay running with alot of trottle. Once it shut off, you could only re-start after changing plugs, pumping the primer, plenty of throttle and quite a few hard pulls. Went thru that process at least 6 times. Whats really got me confused is the having to change the plugs to getted it started each time. (switched same 2 sets back and forth)