6. Remove the vent plug and sealing washer. Allow the gear lube to drain completely.
a - Vent plug
b - Sealing washer
IMPORTANT: If any water drains from the fill and drain plug hole, or if the gear lube appears milky, the sterndrive is
leaking and should be checked immediately by your Mercury Diesel–authorized repair facility.
7. Lower the sterndrive so that the propeller shaft is level.
8. Fill the sterndrive through the fill and drain plug hole with the specified gear lube until an air‑free stream of lube flows from
the vent plug hole.
IMPORTANT: Use only Mercury/Quicksilver High Performance Gear Lube in the sterndrive.
Tube Ref No. Description Where Used Part No.
87
High Performance Gear Lube Sterndrive unit 92-858064K01
9. Install the vent plug and sealing washer.
10. Continue to pump gear lube into the drive through the fill and drain plug hole until the gear lube appears in the gear lube
monitor.
11. Fill the gear lube monitor so that the gear lube level is in the operating range. Do not overfill.
Gear lube monitor
a - Gear lube level at the "ADD" mark
b - Gear lube level at the "OPERATING RANGE" mark
c - Gear lube monitor cap
Sterndrive Model
Fluid Capacity includes
the Sterndrive and the
Gear Lube Monitor
Fluid Type Fluid Part Number
Bravo One X Diesel
Bravo One XR
2736 ml (92.5 oz)
High Performance Gear
Lube
92‑802854A1Bravo Two X Diesel 3209 ml (108.5 oz)
Bravo Three X Diesel
Bravo Three XR
2972 ml (100.5 oz)
12. Ensure that the rubber gasket is inside the gear lube monitor cap and install. Do not overtighten.
a -
Gear lube monitor cap
13. Remove the pump from the sterndrive fill and drain plug hole.
b
a
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Section 4 - Maintenance
90-8M0145546 eng MAY 2018 Page 49