Locate the propellers of the same angle, each diagonally across from each other.

Locate the propellers of the opposite angle, located diagonally across from each other.

Grip each white propeller firmly and pull up to remove.

Removing the propellers may require a decent use of force.

When replacing the propellers make sure to place the corresponding set in the right position, diagonally across from each other to ensure proper liftoff.