Section 5 - Maintenance
90-8M0053363
eng
NOVEMBER 2010
Page 91
Tube Ref No.
Description
Where Used
Part No.
87
High Performance Gear
Lubricant
Gear lube monitor
92-858064K01
3. Ensure that the rubber gasket is inside the cap and install the cap. Do not overtighten.
NOTE: When filling the entire sterndrive unit refer to Changing.
Changing
1. Remove the gear lube monitor from the bracket.
a -
Gear lube monitor
b -
Typical closed cooled
model
c -
Typical seawater cooled
model
2. Empty the contents into a suitable container.
3. Install the gear lube monitor in the bracket.
4. Place the sterndrive unit in full trim limit out position, remove the fill and drain screw and sealing washer and drain the gear
lube.
a -
Fill and drain screw
b -
Sealing washer
5. Remove the vent screw and sealing washer. Allow the gear lube to drain completely.
a -
Vent screw
b -
Sealing washer
IMPORTANT: If any water drained from the gear lube fill and drain hole, or if the gear lube appears milky, the sterndrive unit
is leaking and should be checked immediately by your authorized Mercury MerCruiser dealer.
6. Lower the sterndrive unit so that the propeller shaft is level. Fill the sterndrive unit, through the fill and drain hole, with specified
gear lubricant until an air‑free stream of lubricant flows from the vent hole.
a
32539
a
b
c
b
a
mc79507-1
mc77106-1
b
a