Installing Propeller; Changing Gear Oil - Yamaha F300 Owner's Manual

Maintenance
EMU30671

Installing propeller

EMU29243
Spline models
EWM00770
WARNING
On counter rotation models, be sure to
use a propeller intended for counter-
clockwise rotation. These propellers are
identified with the letter "L" after the size
indication on the propeller. Otherwise the
boat could move in the opposite direction
from that expected.
ECM00500
NOTICE
Be sure to use a new cotter pin and bend
the ends over securely. Otherwise the
propeller could come off during opera-
tion and be lost.
1. Apply Yamaha marine grease or a cor-
rosion resistant grease to the propeller
shaft.
2. Install the thrust washer and propeller
on the propeller shaft. NOTICE: Be sure
to install the thrust washer before in-
stalling the propeller, otherwise the
lower case and propeller boss could
be damaged.
[ECM01880]
3. Install the spacer and washer. Tighten
the propeller nut to the specified torque.
Propeller nut tightening torque:
55.0 Nm (5.61 kgf-m, 40.6 ft-lb)
4. Align the propeller nut with the propeller
shaft hole. Insert a new cotter pin in the
hole and bend the cotter pin ends. NO-
TICE: Do not reuse the cotter pin in-
stalled. Otherwise the propeller can
come off during operation.
98
TIP:
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.
EMU31913

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
[ECM01890]
end of the screw is normal. Simply re-
move them. NOTICE: If there is an ex-