I have a 1985 200 hp Mariner motor that tilt down works fine but it is very slow coming up. I have to assist the motor to get it up to put the transom saver on. This problem occurred all of a sudden. I was concerned that it needs fluid but do not no where to add fluid or check. I hope it is just low. The pump sounds like it works fine it just will not come up without assistance. Could there be another problem. The cylinder has mercruiser on it.