Jacobsen ZB Series, Safety, Operation And Maintenance Manual

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ADJUSTMENTS 7
7.8.4 LUMBAR SUPPORT (OPTION) ______________________________________________
The lumbar support improves the quality of the seat and increases the
performance of the driver.
To adjust the curve in the upper part of the backrest cushion, rotate the
adjustment knob to the top.
To adjust the curve in the lower part of the backrest cushion, rotate the
adjustment knob to the bottom.
0 = No curve angle.
1 = Maximum curve angle at the top.
2 = Maximum curve angle at the bottom.
7.8.5 LEFT HAND ARMRESTS ___________________________________________________
The armrests can fold away and adjustments can be made to the height of
each armrest.
To adjust the armrests for height, separate the round cap (see the arrow) from
the cover. Loosen the hexagon nut (size 13 mm) below the cover. Adjust the
armrests to the correct position (5-steps) and tighten the nut again.
Replace the cap above the nut.
For right hand arm rest adjustments, see Controls section.
7.8.6 ARMREST ADJUSTMENT __________________________________________________
To change the angle of the armrests, turn the adjustment knob.
The front part of the armrest is lifted when you turn the knob to the outside (+).
The armrest is lowered when you turn the knob to the inside (-).
7.8.7 BACKREST ADJUSTMENT _________________________________________________
To loosen the notches of the backrest adjustment, move the locking lever to the
upper position.
After the adjustment, the locking lever must lock into the correct position. if the
lever has locked the backrest will not move into another position.
For the best ergonomic use, adjust the backrest within the range of –5 to +30
degrees (15 steps of 2.5 degrees each).