Mercury HP 500 EFI Bravo XR/XZ/III, User Manual, Page: 97 / 148

93 500 EFI Bravo
MAINTENANCE
CHANGING DRIVE UNIT OIL (BRAVO III)
1 Remove gear lube monitor bottle from bracket.
2 Empty contents into suitable container.
3 Install monitor in bracket.
4 Place drive unit in full trim limit OUT position, remove OIL
FILL/DRAIN SCREW and sealing washer, and drain oil.
5 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, drive unit is leaking and should be checked
immediately by your Authorized Mercury MerCruiser Dealer.
6 Lower drive unit so propeller shaft 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.
IMPORTANT: Use only Quicksilver High Performance Gear
Lube in drive unit.
7 Install OIL VENT screw and sealing washer.
8 Continue to pump gear lube into the gear lube monitor circuit until
gear lube appears in the gear lube monitor.
9 Fill monitor to FILL mark. Lubricate O-ring on neck with sterndrive
oil. Install cap; do not overtighten.
10 Remove pump from OIL FILL/DRAIN hole. Quickly install sealing
washer and OIL FILL/DRAIN screw. Tighten securely.
11 Grease propeller shaft heavily with Anti-Corrosion Grease. Rein-
stall propeller and torque nut to 55 lb-ft (75 Nm) MINIMUM.
12 Recheck oil level after first use.
IMPORTANT: Oil level in gear lube monitor will rise and fall
during drive operation; always check oil level when drive is cool
and engine is shut down.