where is the water hose hook up hole on my 1965 90 hp,merc., 6 cyl sn 1809566 or does it even have one,and how do I drain the motor and add antifreeze, I live in Montana.<br />horn.
your motor is self draining like all mercurys you do have a flush connection the large screw just above the vent screw for the lower unit I dont think the adapter is available any more to run the engine on a hose use muffs you dont need any anti freeze just fog it and change gear lube..bob
