Remove the two screws securing the board/transformer bracket and remove it from the motor assembly.

Unscrew the two Phillips screws holding the Hall effect card to the electric motor

Remove the motor wires from the board terminal block using a small flat screwdriver

Remove the Hall effect card from the electric motor

Unscrew the 4 BTR screws using a 5 mm BTR wrench.

Lift the motor to remove it. You can use a flathead screwdriver to pry up the motor to help you lift it.

Replace the new electric motor, paying attention to the position of the cable exit (green arrow) in relation to the gear wheel (red circle).

Reposition the hall effect card.

Position the legs of the component upwards.

Screw the Hall effect card, the electric motor and the card holder back together.

Screw the motor wires back onto the terminal block.