E-flite Extra 260 3D Profile - Manual (Page 34)

 11. Turn on the transmitter and bring the throttle
trim and stick to the low throttle position. Plug
the battery into the speed control and check
the operation of the motor. It should rotate
counterclockwise when viewed from the front of
the aircraft. Use the instructions provided with
your ESC to make corrections to the direction of
rotation of the motor if necessary.
 12. Install the propeller using the instructions
provided with your motor or propeller system.
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