22
9 Settings backrest 3A, triangular back
9:4
Adjusting back support height and lumbar angle
1-2. Remove the protective cover and loosen the
locking screws (A) max. 1 turn (see also illustration
1-2 on page 20).
3. Adjust the back support height using the gradu-
ation and the marking on the lower back rod.
Tighten the locking screws max. 1/2 turn.
4. Place the Allen key in the selected eccentric
shaft’s locking screw and loosen it 1/2 turn. Move
the Allen key to the eccentric shaft‘s key handle
and set the required lumbar angle.
5. Tighten the locking screws and fit the protective
cover as in illustration 5-6 on page 20.
! We recommend that you start adjusting the lum-
bar angle with the upper eccentric shaft. If a larger
angle is required, adjust the lower eccentric shaft as
well.
1
1
5
5
1
1
5
5
1
1
5
5
3
1
1
5
5
1
1
5
5
A
1-2
4
Risk of tipping: Always
check the positioning of
the anti-tips after adjusting
the backrest upholstery.
Tools: Allen key 5 NV.