Changing Gear Oil - Yamaha F150 Owner's Manual

4. Spacer
5. Propeller
6. Thrust washer
Propeller nut tightening torque:
54 N·m (5.4 kgf·m, 40 lb·ft)
(4) Align the propeller nut slot with the pro-
peller shaft hole. Insert a new cotter pin
in the hole and bend the cotter pin ends.
NOTICE: Do not reuse the cotter pin.
Otherwise, the propeller can come off
during operation.
1. Cotter pin
TIP:
If the propeller nut slot does not align with the
propeller shaft hole after tightening the pro-
peller nut to the specified torque, tighten the
nut further to align the slot with the hole.
EMU47101

Changing gear oil

EWM00801
 Be sure the outboard motor is securely
fastened to the transom or a stable
stand. You could be severely injured if
the outboard motor falls on you.
[ECM01892]
1
ZMU06956
 Never get under the lower unit while it is
tilted, even when the tilt support lever or
knob is locked. Severe injury could oc-
cur if the outboard motor accidentally
falls.
(1) Tilt the outboard motor so that the gear
oil drain screw is at the lowest point pos-
sible.
(2) Place a suitable container under the low-
er unit.
(3) Remove the gear oil drain screw and
gasket.
1. Gear oil drain screw
2. Gasket
TIP:
Always use new gasket. Do not reuse the re-
moved gasket.
(4) Remove the oil level plug and gasket to
allow the oil to drain completely.
NOTICE: Check the used gear oil after
it has been drained. If the gear oil is
milky or contains water or a large
amount of metal particles, the gear
case may be damaged. Have a
Yamaha dealer check and repair the
outboard motor.
Maintenance
2
1
[ECM00714]
89