This is a 75hp mercury 1996 model. THe boat ran great on the muffs before taking to river. I had the water pump replaced a couple of days ago. When the boat was put into water i cranked it and it ran fine. Water pressure seemed okay. After running at full throtle about 5200 rpms the moter suddenly died and would not crank the starter will engage but flywheel is locked. THe forward and reverse gears are there but in forward the prop will spin and make a clicking sound in reverse no movement is allowed. Any help would be great just wondering if this motor sounds salvageable.