IMPORTANT: If any water drained from the oil fill/drain hole, or if the oil
appears milky, the drive unit is leaking and should be checked immediately by
your authorized Mercury MerCruiser dealer.
a - Sealing washer
b - Oil vent screw
3. Adjust the drive unit so the propeller shaft is level.
4. Fill the drive unit through the oil fill/drain hole with SAE 85W90 Mercury
Racing Gear Oil until an air‑free stream of lubricant flows from the oil vent
hole.
a - Oil fill/drain screw
Tube Ref
No.
Description Where Used Part No.
SAE 85W-90
Mercury Racing
Gear Oil
Drive unit 8M0078015
MAINTENANCE
eng 59