FeiYu Tech QING Instructions Manual page 9

Step 2: Mount camera on ARCA quick release plate ②, and tighten it.
Step 3: Install the ARCA quick release plate on the quick release plate, and tighten
the ARCA quick release plate safety lock ③. Install the lens holder ④ and tighten
the thumb screw ⑤ to hold the lens firmly.
Step 4: Unlock the position lock ①, and loose the thumb screw ⑥. Slide the
slide arm ⑦ to balance, and tighten the thumb screw ⑥ after the balancing is
completed.
If the camera can stay stable after moving your hand away, which means
balanced.
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