![HWS Zenki Sit Stand Instruction Book Download Page 6](http://html1.mh-extra.com/html/hws/zenki-sit-stand/zenki-sit-stand_instruction-book_2190658006.webp)
TURN
(Please note the knob rotates in both
directions and alternates the
lock/unlock function).
4. Backrest Angle Adjustment
To fix the back rest angle, rotate the
knob by one click to unlock then
move the backrest to your desired
angle.
You can lock the back position by
rotating the knob one more click.
If you require the chair to operate
in Free-Float mode leave the back
rest unlocked (in the first position).
The tension is automatically set by
the weight of the user.
For the very best effect when
sitting, use together with the seat
tilt also in Free-Float mode.
(See: seat
pivot)