Inventory your motor replacement kit, making sure you have every item in the correct quantity.

Check horizontal propellers for "L" and "R" designations.

Gather the additional tools shown here. A tool list is also at the top of this guide.

Place a drop of Loctite into the threaded hole in the propeller.

Place the propeller onto the motor shaft. Ensure the propeller is threaded straight on the shaft and tighten fully.

Wipe off excess Loctite.

Do this process for both horizontal motors and propellers.

Fit the vertical propeller on the vertical motor bell (the side without the wires). Line up the screw holes on each part.

Attach the prop to the motor by running two M3 6mm screws through the prop into the motor.

Tighten the first screw about halfway, then start the other screw.

Turn screws until they begin to get tight. Then give an additional quarter turn (90º).

Flip Trident to view its underside.

Remove the motor covers on the left and right motors. Each has a single Phillips head screw.

Remove the two M3 screws from the vertical motor mount.

The motor and motor plug are still attached. Set the cover off at an angle to expose the motor plug.

Unscrew the M2 screws fastening the motor plugs to the pass-throughs.

Carefully unplug the motor plug from the pass-through on all three motors.

Remove and discard the old motor plug gaskets (green rubber) from all three pass-throughs.

Remove the two M3 screws that hold the horizontal motor to the motor mount.

Do this step for both horizontal motors.

Insert a larger screwdriver into the space between Trident's body and the horizontal motor, as shown in the photo.

When the screwdriver is in place, push the screwdriver handle toward the front of Trident. This will push the motor out of the mount.

Fully remove the horizontal motor.

Do this for both horizontal motors.

Disconnect the vertical motor from the motor cover by unscrewing the two M3 screws.

Set the motor cover aside for later.

Thoroughly clean the pass-throughs with cotton swabs, wipes, and isopropyl alcohol.

Make sure the area is free of sand, grit, or other debris. Clean corrosion from the pass-through connection points.

Dry with compressed air, or allow ample time to dry (at least 10 minutes).

Apply a liberal amount of the supplied grease in the center of the pass-through as shown.

Do this for all three pass-throughs.

Line up the gasket holes with the pass-through holes, and place the gasket on top.

Gently push down on the gasket.

Place gaskets on all three pass-throughs.

Apply a liberal amount of the supplied grease in the center of the pass-through as shown.

Do this for all three gaskets.

Place the right horizontal motor in the starboard motor compartment.

Place the left horizontal motor in the port motor compartment.

Position the motor so that the mounting screw holes on the motor are as close as possible to the mounting screw holes on Trident's body.

Slide one side of the motor's mounting part under the mounting part on Trident.

Using a blunt screwdriver, press on the other side of the motor mounting part.

The motor should be able to slide into place so that the mounting screw holes are aligned.

Do this process for both horizontal motors.

Use two M3 10mm motor mount screws.

On one motor mount, tighten the first screw about halfway, then start the other screw for that mount.

Fully tighten the screws by turning until they begin to get tight. Then give an additional quarter turn (90º).

Do a wiggle test on the motor to make sure it is securely mounted.

Do this step for both horizontal motors.

Line up the pins on the motor plug with the holes on the pass-through.

Gently push the motor plug all the way down.

Do this for both horizontal motors.

Don't plug in the vertical motor yet.

Use M2 5mm screws.

On one motor plug, tighten the first screw about halfway, then start the other screw for that plug.

Fully tighten the screws by turning until they begin to get tight. Then give an additional quarter turn (90º).

Do a gentle wiggle test on the motor plug to make sure it is securely fastened.

Do this step for both horizontal motor plugs.

Holding the new vertical motor and the vertical motor cover, line up the screw holes. It doesn't have to be precise yet.

Position the motor wires in the motor cover's slot so that all three wires fit within the space. The order of the wires does not matter.

Use M3 6mm screws.

Tighten the first screw about halfway, then start the other screw.

Fully tighten the screws by turning until they begin to get tight. Then give an additional quarter turn (90º).

Do a wiggle test to make sure it is the vertical motor is securely attached to the motor cover.

Line up the pins on the motor plug with the holes on the pass-through.

Gently push the motor plug all the way down.

Use M2 5mm screws.

Tighten the first screw about halfway, then start the other screw.

Fully tighten the screws by turning until they begin to get tight. Then give an additional quarter turn (90º).

Do a gentle wiggle test on the motor plug to make sure it is securely fastened.

Confirm that the vertical motor wires are still nested in the slot in the motor cover (see previous steps for details).

Put the vertical motor cover in place, gently pressing to ensure the cover will sit flush with Trident's body.

Flip Trident over while holding the vertical motor cover in place, flush with Trident's body.

Confirm again that the wires are running through the slot in the motor cover. Make sure they are not pinched.

Use M3 6mm screws.

Turn screws until they begin to get tight. Then give an additional quarter turn (90º).

Do a wiggle test on the motor cover to make sure it is securely attached to Trident.

Use the Phillips head screws saved from disassembly.

Match the tab on one side of the motor cover with the corresponding space on Trident's body. The covers will only fit properly when done correctly.

Turn screws until they begin to become tight. Then give an additional quarter turn (90º).

Attach both horizontal motor covers.