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CD462
Changing Fluids
See MAINTENANCE SCHEDULE for lubricant change frequency. Lubricant should be changed before placing
boat in storage.
Power Trim or Power Steering fluids do not require changing.
CB689
Changing Drive Unit Oil
1 Remove gear lube monitor bottle from bracket. Empty contents into suitable container. Install monitor in
bracket.
2 Bravo One Models: Remove propeller, place drive unit in full trim limit OUT position, remove OIL FILL/DRAIN
SCREW and sealing washer, and drain oil.
3 All Other Models: Place drive unit in full trim limit OUT position, remove OIL FILL/DRAIN SCREW and seal-
ing washer, and drain oil.
4 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.
5 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.
6 Install OIL VENT screw and sealing washer.
7 Continue to pump gear lube into the gear lube monitor circuit until gear lube appears in the gear lube monitor.
8 Fill monitor to FILL mark. Lubricate O-ring on neck with sterndrive oil. Install cap; do not overtighten.
9 Remove pump from OIL FILL/DRAIN hole. Quickly install sealing washer and OIL FILL/DRAIN screw. Tighten
securely.
10Bravo One Models: Grease propeller shaft heavily, with specified lubricant (Refer to “Propeller Installation”
if necessary). Reinstall propeller and torque nut to 55 lb. ft. (75 N
⋅m) MINIMUM.
11 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.
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