Re: fitting merc prop to yamaha
it will work if the prop hub and blade diameter are compatible with the gear case bore and adequate clearence between the anode and ventalation plate. but you must use the correct merc thrust washer and the lock tab with the yamaha prop nut. you may have to play with washer thickness between the nut and the merc lock tab to allow proper prop nut torque and still get the cotter pin in.