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Installing the Shaft Cap

  1. Insert the rubber wedge Callout number 1 into the bottom of the shaft cap.
    NOTE: The rubber wedge fits in the shaft cap in one orientation only. You should examine the shape of the inside of the shaft cap and the shape of the rubber wedge to determine the correct fit.

    Shaft cap installation with callouts
  2. Pull the cables from the shaft completely through the shaft cap.
  3. Place the shaft cap on the shaft, making sure the coil cable wraps around the shaft the same number of times it did before you removed the shaft cap.
    NOTICE

    You must make sure the coil cable wraps around the shaft the same number of times it did before you removed the shaft cap, to prevent unnecessary wear that may lead to a premature failure of the coil cable.

    NOTE: Check the orientation of the shaft cap relative to the orientation of the propeller drive motor. The cables exiting the shaft cap must be on the same side as the propeller, so that the arrow on the shaft cap cover will point forward, relative to the propeller thrust.
  4. Push the shaft cap down until the bolt holes on the shaft cap align with the grooves Callout number 2 on the shaft.
  5. Apply a medium-strength thread-locking compound such as LOCTITE® 243™ to the ends of the 1/4–20 bolts.
  6. Install the 1/4–20 bolts and split washers into the bottom of the shaft cap.
    NOTE: The bolts should slide all the way through the bottom of the shaft cap easily. If you encounter any resistance, you should rotate the shaft cap from side to side while pushing down on it until it is seated correctly and you can easily insert the bolts all the way through.
  7. Using a #3 Phillips bit or screwdriver, secure the bolts to the nuts and lock the shaft cap in place.
    NOTE: The holes on one side of the shaft cap are shaped to hold the nut in place while you drive the screws from the other side.
GUID-36A086C0-41D9-4098-8234-D26188424460 v2
March 2025
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