Things You'll Need
Instructions
Grip the old rotor at the base of the assembly, where the plastic rod meets the metal shaft extending from the helicopter's fuselage. Pull the entire assembly off the rotor shaft by tugging and twisting it counter-clockwise.
Insert the main shaft into the plastic mounting pipe located in the center of the replacement rotor-blade set. Press the assembly down onto the shaft until it clicks into position.
Tug the rotor assembly with your hand to check that it has seated properly. Turn on the helicopter and transmitter, then apply throttle to check that it is functioning properly.