Komatsu WA320-5H Operation & Maintenance Manual page 124

OPERATION
(J) Lumbar support
Operate switch (8) to give a suitable tension to the lower lumbar region.
Operate switch (9) to give a suitable tension to the upper lumbar region.
When + is pressed: Tension becomes stronger
When - is pressed: Tension becomes weaker
(K) Side support
Operate switch (10) to give a suitable tension to the left and right lumbar region.
When + is pressed: Tension becomes stronger
When - is pressed: Tension becomes weaker
REMOVAL AND INSTALLATION OF HEADREST
Removal
If the headrest is not needed, remove it as follows.
1. Pull up the headrest to the position where it stops.
2. From the top of the seat back, turn stopper (1) (under the
material at the top of the seat) of the headrest bar on one
side in the direction of the arrow, and pull up the headrest.
When stopper (1) is turned, it will come out of groove (2).
3. Turn stopper (1) on the other side in the direction of the
arrow, and pull up the headrest.
When both stoppers (1) come out of groove (2), the head-
rest can be removed.
Installation
1. Insert the bars into the holes in the top of the seat and push
down.
OPERATION
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