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4. Tighten the propeller nut. Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in
the hole and bend the cotter pin ends.
3.9 Changing gear oil
WARNING
：
Be sure the outboard motor is securely fastened to the transom or a stable stand.
Never get under the lower unit while the outboard motor is tilted, even when the tilt support lever or
knob is locked. Serious injury could occur if the motor 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 gear oil drain screw.
1. Gear oil drain screw
2. Oil level plug
CAUTION:
Change the gear oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals
thereafter. Otherwise the gear will wear quickly.
4. Remove the oil level plug to allow the oil to drain completely.
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