Use 6 MC 93395A252_316 screws to fasten the motor coupling to the actuator.
Place all four spacers on the tips of the four screws sticking out of the assembly on the right knee housing side.
Align the motor coupling with the hexagonal hotel on the input pulley. Rotate the actuator until it is in line with the screws and spacers on the assembly.
Fasten the 4 screws to secure the actuator in place.
Be sure to rotate the actuator to make it easy to connect to the battery.