Remove all screws from all four arms, and the screws on either side of the center.

The screws on the arms are 7mm.

The screws on the motor are 9mm.

Remove the 5mm screw holding the rotor onto the drone.

Note There should be 22x 7 mm Phillips head screws, 8x 9 mm Phillips head screws and 1x 5 mm Phillips head screw.