Changing Gear Oil - Yamaha F350 Owner's Manual

Maintenance
EMU31917

Changing gear oil

EWM00800
WARNING
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 cooling water inlet covers
on both sides of the gear case. Be care-
ful not to lose the bolt and nut.
4. Remove the gear oil drain screw and
gasket. The screw is magnetic so a
small quantity of metal particles on the
end of the screw is normal. Simply re-
move them. NOTICE: If there is an ex-
cessive quantity of metal particles on
the magnetic gear oil drain screw,
this can indicate lower unit problem.
Consult your Yamaha dealer.
114
2 3
1. Gear oil drain screw
2. Oil level plug
3. Gasket
5. 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
[ECM01900]
Yamaha dealer check and repair the
outboard motor.
TIP:
For disposal of used oil, consult your
Yamaha dealer.
6. Put the outboard motor in a vertical posi-
tion. Using a flexible or pressurized fill-
ing device, inject the gear oil into the
gear oil drain screw hole.
1 3
[ECM00713]
ZMU05870