Hubsan X4 107L Flight Controller Replacement

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Remove Propellers

Use the prop removal tool to pry the propellers off the motors.
Each propeller and motor arm is labeled either "A" or "B" corresponding to whether the motor spins clockwise or counterclockwise. With the quad oriented with the front facing towards you:
"A" propellers are on the front left and back right motors.
"B" propellers are on the front right and back left motors.

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