Easiest way to check power head is to remove four screws that hold the power head to the down tube casting.Powerhead will lift off.Having removed powerhead,you can check it by turning flywheel and lower unit by turning prop.To remove the pump,remove the six screws at the bottom of the down tube.Remove the curved support and loosen the pipe fittings.Carefully clamp the casting at the top of the down tube in a vise.Twist the gear case back and forth,by hand,until it frees enough you can pull it off.Then you can remove the pump with out bending the water tube
