Yamaha F50D Servise Manual - page 262
Lower unit
8-63
LOWR
6.
Install the lower unit to the upper case,
and then tighten the lower unit mounting
bolts
6
and
7
to the specified torque. (L
transom)
å
L transom
Install the lower unit and extension
8
to
the upper case, and then tighten the
lower unit mounting nuts
9
and bolt
0
to
the specified torque. (X transom)
∫
X transom
7.
Fill the lower unit with gear oil to the cor-
rect level.
8.
Install the propeller
q
and propeller nut
w
. Place a block of wood between the
anti-cavitation plate and propeller to keep
the propeller from turning, and then
tighten the propeller nut to the specified
torque.
TIP:
If the grooves in the propeller nut
w
do not
align with the cotter pin hole, tighten the pro-
peller nut until they are aligned.
Lower unit mounting bolt
6
and
7
:
40 N·m (4.0 kgf·m, 29.5 ft·lb)
2
2
3
4
6
7
5
6
6
å
2
2
8
5
9
9
4
9
0
3
∫
Lower unit mounting nut
9
and bolt
0
:
40 N·m (4.0 kgf·m, 29.5 ft·lb)
Recommended gear oil:
Hypoid gear oil
API: GL-4
SAE: 90
Gear oil quantity:
0.67 L
(0.71 US qt, 0.59 Imp qt)
Propeller nut
w
:
35 N·m (3.5 kgf·m, 25.8 ft·lb)
F
q
w