150 yahmaha 4 stroke bogging out

[localhunley]

We got the boat packed today for a nice day of cruising around and after about 5 min of idling in the cut the engine started to sputter and shake and eventually shut down. I tried to recrank and it wouldn't with out me priming the ball. I towed back to the landing and tied up and cranked the motor and it did fine and then it started shaking and sputtering and shut down again. I just put 20 gallons of ethanol free gas in about 2 weeks ago, the separator looked clean and so did the fuel filter. Could the ball be bad? Help please, I have no clue....

[boats.net]

Check for water in gas, check for fuel restrictions in fuel hoses, fuel filters or gas tank.