Mercury Bravo Three Operation & Maintenance Manual page 69

CB49
CHANGING DRIVE UNIT OIL
IMPORTANT: Use only Quicksilver High Performance Gear
Lube in drive unit.
1
Place drive unit in full trim limit (out) position, remove OIL FILL/
DRAIN SCREW and sealing washer.
2
Remove OIL VENT screw and sealing washer. Allow oil to drain
completely.
IMPORTANT: If any water drained from OIL FILL/DRAIN hole, or
if oil appears milky tan, drive unit is leaking and should be
checked immediately by your Authorized MerCruiser Dealer.
Lower drive unit so anti-ventilation plate is level. Fill drive unit,
through OIL FILL/DRAIN hole, with Specified Gear Lube until an air–
free stream of lubricant flows from OIL VENT hole.
Remove tube from OIL FILL/DRAIN hole. Quickly install sealing
washer and OIL FILL/DRAIN screw. Tighten securely.
3
Fill gear lube monitor with Specified Gear Lube. When oil starts
to run out the vent hole (Monitor circuit completely filled), reinstall
vent plug and seal, and tighten securely.
4
Fill monitor to "FILL" mark. Lubricate O-ring on monitor neck with
stern drive oil, to ensure ease of installation and removal of cap; in-
stall cap, do not over tighten.
5
Recheck oil level after first use.
IMPORTANT: Oil level in monitor will rise and fall during drive
operation; always check oil level when drive is cool and engine
is shut down.
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