Remote controlled helicopters, or “RC,” can provide hours of enjoyment if properly maintained and serviced. The pitch angle of the main rotor blades will degrade over time, causing the helicopter to improperly respond to your remote’s commands. Repair the pitch angle of the blades using a helicopter pitch gauge you can buy inexpensively a hobby shop or RC supply store.
Remove the screw from the battery compartment on the underbody of the helicopter with a Phillips jeweler's screwdriver. Remove the battery from the battery compartment. Detach the battery leads from the connection inside of the battery compartment. Place the battery aside for reassembly later.
Stand the RC helicopter on a table. Hold the helicopter pitch gauge horizontally so the side with the printed scale is facing left.
Slide the blade out from the back of the pitch gauge bar about 2 inches. Place the end of the blade on the top of the RC helicopter's main rotor blades.
Push up or down on the pitch gauge bracket at the middle to align it so that it is level with the horizontal "flybar" above the rotor blades.
Read the setting on the pitch gauge scale --the number will either be "positive" on the right side of zero or "negative" on the left side of the zero. Pull up or down on the "flybar" with your fingers. Realign the pitch gauge bracket so the number being pointed to is now zero. Remove the helicopter pitch gauge and put it away.
Reinsert the battery leads into the battery compartment. Reinsert the battery into the battery compartment. Place the battery compartment lid back on. Screw the screw in.