Maintenance723. Remove the propeller, washer (ifequipped), and thrust washer.EMU30672Installing propellerEMU29233Spline modelsNOTICEECM00500Be sure to use a new cotter pin and bendthe ends over securely. Otherwise thepropeller could come off during opera-tion and be lost.1. Apply Yamaha marine grease or a cor-rosion resistant grease to the propellershaft.2. Install the spacer (if equipped), thrustwasher, washer (if equipped), and pro-peller on the propeller shaft. NOTICE:Be sure to install the thrust washerbefore installing the propeller, other-wise the lower case and propellerboss could be damaged. [ECM01880]3. Install the spacer (if equipped) and thewasher. Tighten the propeller nut to thespecified torque.4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends. NO-TICE: Do not reuse the cotter pin in-stalled. Otherwise the propeller cancome off during operation. [ECM01890]TIP:If the propeller nut does not align with thepropeller shaft hole after tightening to thespecified torque, tighten the nut further toalign it with the hole.EMU29287Changing gear oilWARNINGEWM00800 Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you. Never get under the lower unit while itis tilted, even when the tilt support leveror knob is locked. Severe injury couldoccur if the outboard motor accidental-ly falls.1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.2. Place a suitable container under thegear case.3. Remove the gear oil drain screw andgasket. NOTICE: If there is an exces-sive quantity of metal particles on themagnetic gear oil drain screw, thiscan indicate lower unit problem. Con-sult your Yamaha dealer. [ECM01900]5. Thrust washerPropeller nut tightening torque:17.0 Nm (1.73 kgf-m, 12.5 ft-lb)ZMU02063