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So, you've run your little helicopter so much that the motors need replacing? No problem. 1. Remove the c clip that holds on the rotor shaft. It is located on the underside of the unit near the middle. It will pull out towards the back. The rotor shaft, gears, and rotors should then be able to pull upwards out of the main body. Please be careful not to break any of the gear teeth when taking them out of the motor pinions. 2. The motor pinions should slide off just by pulling on them. If more force is needed, use a small flathead driver to pry the pinions off. Place them in a bowl or jar for safekeeping. Many of the parts on this unit are very small, and are easily misplaced. Make a note of which pinion goes on which side. 3. Remove all of the small screws from the bottom of the body. There will be 3 on either side and one in the middle for a total of 7. There will be two more on either motor you will have to remove. 4. Remove the caps on the bottom of the motor. They are just held on by friction and a bit of glue. They will just pull off. 5. Open up the body between the front LEDS. A small flathead will suffice. There will be a single screw holding in the circuit board down. Remove it.
6. Release the motors by pushing them up through the bottom, and out through the middle of the body. You should have access to the wiring then. If there is some problems getting the motors out of their mounts (pull halfway out, then stop) you may have a later version of the MicroMosquito/FireFly that has an extra ground point on the motors. This can be snipped off and resoldered on later. 7. The next step will be to remove the motors. Snip one wire at a time, trying to keep the length of the wires leads close to what the new motors have. There isn't a ton of space underneath and more wiring can cause putting the body together tricky. 8. Basic soldering of the wires together will follow. Strip the ends of the wire and pre-tin the exposed areas. Use heat shrink or tape to seal the connections. 9. Place the new motors back into the body, making sure if you have the ground points on the motor, to resolder them. Attach everything back together, making sure that none of the wires are being pinched by the two body halves. 10. Place back in all of the screws and you'll be back up in the air!
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