8:1 Adjusting back support angle, mono- bi- and triangular back
1. Loosen the nut.
2. Adjust the back support angle. Use the posi-
tion markings to obtain the same back support
angle on the right and left sides respectively.
3. Tighten the nut.
Risk of tipping: Always
check the positioning of
the anti-tips after adjusting
the backrest upholstery.
Tools: Ring spanner 13 mm.