Maintenance

the lower case and propeller boss could be damaged.

●Be sure to use a new cotter pin and bend the ends over securely. Otherwise the propeller could come off during op- eration and be lost.

1.Apply Yamaha marine grease or a cor- rosion resistant grease to the propeller shaft.

2.Install the spacer(if equipped), thrust washer, and propeller on the propeller shaft.

3.Install the spacer (if equipped) and the washer. Tighten the propeller nut to the specified torque.

4.Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

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.

EMU29280

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 gear oil drain screw.

2

1

ZMU03133

1.Gear oil drain screw

2.Oil level plug

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.

ECM00710

CAUTION:

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 repair of the lower unit seals.

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