Translations:KAVAN Beta 1400 Kit - Instruction manual/74/en

B) Slowly move the throttle stick up, the prop should start to rotate clockwise (looking from behind). If it spins in the opposite direction, pull the throttle stick back, disconnect the flight battery and swap any two of the three cables between the motor and the ESC. The re-check again. Repeat the ESC throttle range calibration. Then re-check again.