How to Remove Outboard Propellers

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An outboard boat has a motor mounted to the stern of the boat. The motor drives the propeller which in turn pushes the boat through the water. If a prop gets bent or damaged it needs to be replaced. Before installing the new prop the old one must be removed. Benefits of outboard motors are the accessibility of the shaft and ability to raise it out of the water for the prop change.

Things You'll Need

  • Clean rag
  • Small mallet
  • Flat-head screwdriver
  • Power ratchet and sockets
  • Spray lubricant
  • Bring the shaft up out of the water and disconnect the motor spark plug and battery wires for safety. Wipe off any grime or plants from the shaft and prop area.

  • Remove the nut retainer holding the prop nut. Nut retainers are either cotter pins or nut washers. Place a rag over the open end of the cotter pin and tap it with the mallet to pop the pin out of the nut. If the nut retainer is a washer, pry it up and off using the tip of a flat-head screwdriver.

  • Fit a socket to the prop nut. Adjust the power socket so it turns counterclockwise and unscrew the nut off the center of the prop. If it is stuck, spray lubricant onto the nut threads and let it soak in and then try unscrewing again.

  • Pull the prop out from the retaining stud once the nut is removed.

References

  • Photo Credit Jupiterimages/Photos.com/Getty Images
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