Section 5 - Maintenance
90-866938081 MAY 2009 Page 97
12. Fill the gear lube monitor to the "COLD FILL LEVEL" line, if the level is low. Refer to
Filling.
13. Ensure that the rubber gasket is inside the cap for the gear lube monitor and install the
cap. Do not overtighten.
14. Recheck the gear lube level at the gear lube monitor after the first use. Refer to
Checking.
IMPORTANT: The gear lube level in the gear lube monitor rises and falls during drive
operation; always check the gear lube level when the drive is cool and the engine is shut
down.
WITH THE BOAT OUT OF THE WATER
1. Remove the drive propellers. See Propellers.
2. Remove the gearcase fill and drain screw and sealing washer.
a - Gearcase
b - Fill‑drain screw and sealing washer
3. Remove the gear lube monitor cap.
Shown without drive cover
a - Gear lube monitor
b - Cap
4. Drain the gear lube into a suitable container.
5. Allow the gear lube to drain completely.
IMPORTANT: If any water exits the fill and drain hole, or if the gear lube appears milky,
the drive is leaking. Contact your Cummins MerCruiser Diesel Authorized Repair Facility
immediately.
IMPORTANT: Use only Mercury or Quicksilver High Performance Gear Lube in the drive.