Having a problem with the motor shutting down. Runs great until it gets hot out side (afternoon) and then it shuts down and to get it too restart you have to pump the bulb to get fuel back to the engine and sit in the shade it seems. Have replaced the bulb, fuel filter, have a fuel water seperator on the boat. Out of ideas of what is causing it, its annoying because I can't trust it while its shutting down alot. No warnings are going off when it shuts down.

Thanks