Maintenance46Do not use your hand to hold the propellerwhen loosening or tightening the propellernut. Put a wood block between the anti-cavi-tation plate and the propeller to prevent thepropeller from turning.Checkpoints Check each of the propeller blades for ero-sion from cavitation or ventilation, or otherdamage. Check the propeller shaft for damage. Check the splines for wear or damage. Check for fish line tangled around the pro-peller shaft. Check the propeller shaft oil seal for dam-age.EMU30662Removing propellerEMU29197Spline models1. Straighten the cotter pin and pull it out us-ing a pair of pliers.2. Remove the propeller nut, washer, andspacer (if equipped). WARNING! Do notuse your hand to hold the propellerwhen loosening the propeller nut.[EWM01890]3. Remove the propeller, washer (ifequipped), and thrust washer.EMU30672Installing propellerEMU30373Spline modelsNOTICEECM00501Make sure to use a new cotter pin andbend the ends over securely. Otherwise,the propeller could come off during opera-tion and be lost.1. Apply Yamaha marine grease or a corro-sion resistant grease to the propellershaft.2. Install the spacer (if equipped), thrustwasher, and propeller on the propellershaft. NOTICE: Make sure to install thethrust washer before installing thepropeller. Otherwise, the lower caseand propeller boss could be damaged.[ECM01881]1. Cotter pin2. Propeller nut3. Washer4. Propeller5. Thrust washer