Mercury 40 FourStroke Maintenance And Installation Manual page 66

2. Remove the spark plug leads to prevent engine from starting.
3. Straighten the bent tabs on the propeller nut retainer.
4. Place a block of wood between the gearcase and propeller to keep the
propeller from turning. Remove the propeller nut.
5. Pull the propeller straight off the shaft. If the propeller is seized to the
shaft and cannot be removed, have the propeller removed by an
authorized dealer.
MAINTENANCE
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