Komatsu D155A-6 Operation & Maintenance Manual page 161

OPERATION
ADJUSTMENT
Make an adjustment of the operator's seat position before starting the machine operation or when an operator changes.
Adjust the seat position the way the operator can fully depress the brake pedal with his or her back pressed against the
backrest.
ADJUSTING OPERATOR'S SEAT
(A) Fore-and-aft adjustment
Pull lever (1), set the seat to a position where it is easy to operate,
then release the lever.
Fore-aft adjustment: 160 mm (6.3 in) (8 stages)
(B) Weight and height adjustment of seat
Turn knob (2) under the seat so that weight adjustment indicator
(3) displays the green range. The height can be adjusted by
turning the knob (2) while the green range is displayed.
Turn the knob clockwise to raise the seat and turn the knob
counterclockwise to lower the seat.
Height adjustment range: stepless, 75 mm (3 in)
Weight adjustment range: 50 to 130 kg (110 to 237 lb)
(C) Adjust reclining angle
REMARK
When the seat is pushed forward, the available reclining angle becomes greater; when the seat is pushed back, the
available reclining angle becomes smaller. When moving the backrest, return the backrest to its original position
before moving the seat.
Pull lever (4) up, set the backrest to the desired position, then release the lever.
(D) Adjusting direction of seat
Pull up lever (5) to unlock the seat. The seat can then be turned 15
° to the right.
After changing the direction of the seat, return the lever securely to
lock the seat.
Change the direction of the seat to the right for the ease of
operation of the ripper.
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WARNING
OPERATION