69
CD791
DRIVE UNIT OIL
1 Remove gear lube monitor from bracket.
2 Empty contents into suitable container.
3 Install monitor in bracket.
4 Place drive unit in full trim limit UP/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 discolored, 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 fill until gear lube appears in the gear lube monitor.
A Fill monitor to FULL mark. Lubricate O-ring on neck with sterndrive oil. Install cap; do not overtighten.
B Quickly install sealing washer and OIL FILL/DRAIN screw. Tighten securely.
9 Remove propeller and grease propeller shaft heavily, with specified lubricant (Refer to Propeller Installation
if necessary). Reinstall propeller and torque nut to 75 Nm (55 lb-ft) MINIMUM.
10Recheck 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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