Maintenance
58
NOTE:
If the propeller nut does not align with the
propeller shaft hole after tightening to the
specified torque, tighten the nut further to
align it with the hole.
EMU29281
Changing gear oil
WARNING
EWM00800
●
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.
●
Never get under the lower unit while it
is tilted, even when the tilt support lever
or knob is locked. Severe injury could
occur if the outboard motor accidental-
ly 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
gear case.
3.
Remove the gear oil drain screw.
NOTE:
If the magnetic gear oil drain screw
equipped: remove all metal particles from
the screw before installing it.
4.
Remove the oil level plug to allow the oil
to drain completely.
CAUTION:
ECM00710
Inspect the used oil after it has been
drained. If the oil is milky, water is getting
into the gear case which can cause gear
damage. Consult a Yamaha dealer for re-
pair of the lower unit seals.
NOTE:
For disposal of used oil consult your Yamaha
dealer.
5.
With the outboard motor in a vertical po-
sition, and using a flexible or pressur-
ized filling device, inject the gear oil into
the gear oil drain screw hole.
6.
When the oil begins to flow out of the oil
level plug hole, insert and tighten the oil
1. Gear oil drain screw
2. Oil level plug
ZMU03273
2
1
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
F100AET 670.0 cm
3
(22.65 US oz)
(23.63 Imp.oz)
F100BET 760.0 cm
3
(25.70 US oz)
(26.81 Imp.oz)
F80AET 670.0 cm
3
(22.65 US oz)
(23.63 Imp.oz)
ZMU03274
