i had mentioned last week that is was the first time in 4-1/2 years my yamaha left me stranded. well i was wrong it was not the motor it was the connection to my fuel tank the o-ring had just wore out and it was letting air in and therefore no suction to bring gas to the motor. so 30bucks in parts and 100bucks in labor and my boat is up and running again. i wish i knew a little more about motors i could of saved a hundred bucks. i have a 50hp 4stroke fuel injection and i recognize a few parts. growing up my dads boat motors looked a lot more simpler to work on.