Sachtler aktiv14T Touch & Go Fluid Head with SpeedLevel & 7-Step Drag (100mm) - Manual (Page 25)

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Operation
3 . If the payload continues to move upwards when released, the
balance is set too high. Lower the balance adjuster setting by one
increment and retest.
4 . If the payload continues to move backwards when released, the
balance is set too low. Raise the balance adjuster setting by one
increment and retest.
5 . Tilt the payload through positive and negative angles of travel,
checking that the payload remains at any angle of tilt unsupported.
If the payload angle falls away, repeat the balancing
procedure (step 3 or 4) until balance is achieved.