Would like to drain and refill gear lube in lower unit, but do not know how lube will drain since both VENT and FILL holes are next to each other above cavitation plate,well above gears. Does one tilt motor out, which should drain most lube? How to refill?<br />Motor is an 85HP Force and has a Screw near bottom of unit, but does not look like a drain port. Still waiting for a recently purchased Motor Manual which may answer these questions?<br />Thanks for any help<br />John