I have a 1999 Mercury 90 hp 2 stroke. After changing my water pump I put the muffs on too flush motor and noticed my prop was spinning pretty fast. It never did that before in nutrual when I was flushing . Is that normal ? Any clue
Well it might be in gear now.-------Did you make 100% sure that lower unit and control box were in FORWARD when you assembled ?-----Or both in neutral when you assembled ?
