Mercury HP 500 EFI Bravo XR/XZ/III User Manual page 95

CHANGING DRIVE UNIT OIL (XR, XZ MODELS)
IMPORTANT: Use only Quicksilver High Performance Gear
Lube in drive unit.
1 Remove propeller, place drive unit in full "down" position, remove
OIL FILL/DRAIN SCREW and sealing washer, and drain oil.
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, drive unit is leaking and should be checked
immediately by your Authorized MerCruiser Dealer.
3 Adjust 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.
Remove tube from OIL FILL/DRAIN hole. Quickly install sealing
washer and OIL FILL/DRAIN screw. Tighten securely.
4 Add Specified Gear Lube to the monitor bottle. When oil starts to
run out the OIL VENT hole of the drive, reinstall drive OIL VENT
screw and seal, and tighten securely.
5 Continue adding gear lube to the monitor bottle until the oil level
is at the "FULL LINE" mark on the bottle. Lubricate O-ring on neck
with stern drive oil, to ensure ease of installation and removal of
cap; install cap. Do not over tighten.
IMPORTANT: Recheck reservoir bottle oil level after first use.
6 Grease propeller shaft heavily with Anti-Corrosion Grease. Rein-
stall propeller and torque nut to 55 lb-ft (75 Nm) MINIMUM.
IMPORTANT: Oil level in gear lube monitor will rise and fall dur-
ing drive operation; always check oil level when drive is cool
and engine is shut down.
500 EFI Bravo
MAINTENANCE
91