Installing Propeller; Changing Gear Oil - Yamaha F350 Owner's Manual

Maintenance
EMU30673

Installing propeller

EMU29247
Spline models
EWM00771
On counter rotation models, be sure to use a propeller
intended for counterclockwise rotation. These propel-
lers are identified with the letter "L" after the size indi-
cation on the propeller. Otherwise the boat could move
in the opposite direction from that expected.
ECM00502
Make sure to use a new cotter pin and bend the ends
over securely. Otherwise, the propeller could come off
during operation and be lost.
1. Apply Yamalube Marine Grease or a corrosion resis-
tant grease to the propeller shaft.
2. Install the thrust washer and propeller on the propeller
shaft. NOTICE: Make sure to install the thrust wash-
er before installing the propeller. Otherwise, the
lower case and propeller boss could be damaged.
[ECM01882]
3. Install the spacer and washer. Tighten the propeller nut
to the specified torque.
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
6. Thrust washer
Propeller nut tightening torque:
54 Nm (5.51 kgf-m, 39.8 ft-lb)
4. Align the propeller nut slot with the propeller shaft hole.
Insert a new cotter pin in the hole and bend the cotter
pin ends. NOTICE: Do not reuse the cotter pin. Oth-
erwise, the propeller can come off during opera-
tion.
[ECM01892]
69
6
5
4 3
2
1
ZMU07271
TIP:
If the propeller nut slot does not align with the propeller shaft
hole after tightening the propeller nut to the specified
torque, tighten the nut further to align the slot with the hole.
EMU31918

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.
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 accidentally
falls.
1. Tilt the outboard motor so that the gear oil drain screw
is at the lowest point possible.
2. Place a suitable container under the gear case.
3. Remove the cooling water inlet covers on both sides of
the gear case. Be careful 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 remove them.
NOTICE: If there is an excessive quantity of metal
particles on the magnetic gear oil drain screw, this
can indicate lower unit problem. Consult your
Yamaha dealer.
[ECM01901]