Section 5 - Maintenance
90-8M0050539 eng MAY 2011 Page 91
d. Drain the fluid into a suitable container.
a - Oil fill and drain screw
b - Sealing washer
5. All Other Models:
a. Place the sterndrive unit in full trim out position.
b. Remove the oil fill and drain screw and sealing washer.
c. Drain the fluid into a suitable container.
a - Oil fill and drain screw
b - Sealing washer
6. Remove the oil vent screw and sealing washer. Allow the oil to drain completely.
a - Oil vent screw
b - Sealing washer
IMPORTANT: If any water drains from the unit, or if the fluid appears milky, the sterndrive unit is leaking. See your authorized
Mercury MerCruiser dealer.
7. Lower the sterndrive unit so the propeller shaft is level.
IMPORTANT: Use only Mercury/Quicksilver High Performance Gear Lubricant in sterndrive unit.
8. Fill the sterndrive unit through the oil fill and drain hole with specified gear lubricant until an air‑free stream of lubricant flows
from oil vent hole.
Tube Ref No.
Description Where Used Part No.
87
High Performance Gear
Lubricant
Sterndrive unit 92-858064K01
9. Install the oil vent screw and sealing washer.
a
mc79506-1
b
b
a
mc79507-1
mc77106-1
b
a
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