Zhiyun SMOOTH-XS User Manual page 10

Installation and Balance Adjustment
There is a built-in lock design in the stabilizer's roll axis and pan axis for
convenient storage and transportation when the stabilizer is powered off. Rotate
the smartphone clamp and pan axis to the lock position to lock them. Unlock
the stabilizer before use.
If the phone is not perpendicular to the ground after mounting, you may unfold
the telescopic rod slightly and rotate the tilt axis clockwise. The phone will then
be perpendicular to the ground.
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