Mercury D4.2L Manual page 77

CD646
DRIVE UNIT OIL
1
Remove gear lube monitor bottle from bracket. Empty contents into suitable container. Install monitor in
bracket.
A
D3.6L and D4.2L
B
D2.8L D-Tronic and D4.2L D-Tronic
C
D4.2L LD
2
Bravo One Models: Remove propeller, place drive unit in full DOWN/IN position, remove OIL FILL/DRAIN
SCREW and sealing washer, and drain oil.
3
All Other Models: Place drive unit in full UP/OUT position, remove OIL FILL/DRAIN SCREW and sealing
washer, and drain oil.
A
Bravo Three
B
Bravo Two
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.
10
Bravo 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
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.
⋅
m) MINIMUM.
77