How to replace the propeller shaft seals on an evinrude outboard motor

Written by lawrence stephens
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How to replace the propeller shaft seals on an evinrude outboard motor
If your propeller seals are leaking they should be replaced as soon as possible. (fishing boat image by Wimbledon from

Replacing the propeller shaft seals on your Evinrude outboard motor may become necessary for many reasons. If the motor has been out of the water for some time, the shaft seals may have dry rotted or cracked. Occasionally fishing line can wrap itself around the propeller shaft and create small cuts in the seals; these cuts may cause leaks. Whatever the reason, replacing the propeller shaft seals is not as complicated as you might think.

Skill level:

Things you need

  • Pliers
  • 1-1/16-inch box-end wrench
  • Steering-wheel puller
  • Internal-large-jawed puller
  • Propeller shaft seals
  • Bearing driver
  • Mallet
  • White marine grease
  • Bearing carrier O-ring
  • Shop towel
  • Soft-faced mallet

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  1. 1

    Use pliers to remove the cottar pin from the propeller nut. Remove the propeller nut with a 1/16-inch box wrench. Slide the propeller off of the propeller shaft. Remove any washers or bearings as well.

  2. 2

    Use a steering wheel puller to remove the bearing carrier. Place the centre pin of the steering wheel puller on the centre of the propeller shaft. Lock the arms of the puller around the back side of the bearing carrier. Turn the T-handle on the puller to remove the carrier from the gear case.

  3. 3

    Take the O-ring from the bearing carrier and discard it. Use an internal-large-jawed puller to remove the seals from the propeller side of the bearing carrier.

  4. 4

    Place two new shaft seals that have not been lubricated into the bearing carrier. Use a bearing driver and a mallet to tap the seals into the housing. The lips of the seal should be facing the propeller. Apply white marine grease on to the lips of the new seal.

  5. 5

    Apply a coat of white marine grease to the new bearing carrier O-ring. Place the O-ring back into the carrier groove. Clean any excess grease from the bearing carrier with a clean towel. Replace the bearing carrier over the propeller shaft and tap it into place.

  6. 6

    Replace the propeller and washers onto the propeller shaft. Replace the propeller nut, and tighten it firmly. Replace the cottar pin.

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