Gearcase Installation - Mercury 75 Service Manual

5. Replace this lubricant "Vent" screw and gasket
only and continue filling until excess starts to flow
out of second lubricant "Vent" screw hole.
a - Vent Screw (Torque to 60 lb. in. (6.8 N·m)
b - Fill/Drain Screw (Torque to 60 lb. in. (6.8 N·m)
c - Oil Level Vent Screw (Torque to 60 lb. in. (6.8 N·m)
6. Replace second lubricant "Vent" screw and
gasket.
IMPORTANT: Do not lose more than one fluid
ounce (30cc) of gear lubricant while reinstalling
"FILL" screw.
7. Remove lubricant tube from "Fill" hole; install
"Fill" screw and gasket. Torque "Fill" screw to 60
lb. in. (6.8 N·m).
6A-34 - LOWER UNIT

Gearcase Installation

Disconnect (and isolate) spark plug leads from
spark plugs before installing gear housing onto
drive shaft housing. Failure to follow this warn-
ing could result in accidental engine starting and
possible injury.
a
c
1. Position outboard shift linkage into forward gear
Models 40/45/50 Bigfoot (4-Stroke)
Remote Control Model Shown
b
53922
a - Shift Lever
Models 60 Bigfoot
a - Shift Block
Models 75/90/100/115/125
a - Shift Block; Front of Block MUST Extend 1/8 in. (3.2mm)
Past Front of Rail.
b - Rail
WARNING
position.
a
a
a
90-830234R3 DECEMBER 1997
b
19879