Gear Housing Installation; Filling Gear Housing With Lubricant - Mercury 40 Service Manual

Gear Housing Installation

Filling Gear Housing with Lubricant

NOTE: Gear housing lubricant capacity is approxi-
mately 11.5 fl. oz. (340 ml).
WARNING
If gear housing is installed on outboard, discon-
nect (and isolate) spark plug leads from spark
plugs before working near the propeller.
CAUTION
Do not use automotive grease in the gear hous-
ing. Use only Quicksilver Gear Lube.
1. Remove any gasket material from "Fill" and
"Vent" plugs and gear housing. Install new gas-
kets on "Fill" and "Vent" plugs.
IMPORTANT: Never add lubricant without remov-
ing "Vent" plugs. Gear housing cannot be filled
because of trapped air. Fill gear housing when
driveshaft is in a vertical position.
2. Remove "Fill" plug and gasket.
3. Insert lubricant tube in "Fill" hole, then remove
"Vent" plugs and gaskets.
4. Fill until excess lubricant flows out of left "Vent"
hole.
5. Replace left "Vent" plug and gasket and continue
to fill until lubricant flows from right "Vent" hole.
6. Replace right "Vent" plug and gasket.
7. Install "Fill" plug and gasket.
6B-32 - LOWER UNIT
a - "Fill" Plug
b - "Vent" Plug
c - "Vent" Plug
8. Torque screws to 35-80 lb. in. (3.8-8.8 N·m)
b
c
a
50558
90-852572R1 JANUARY 1998