Komatsu PC450-8 Operation & Maintenance Manual page 186

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MACHINE OPERATIONS AND CONTROLS
q
Forward tilt
Push lever (3) down to adjust angle of the front of seat. (4 stages)
q
To raise the angle at front of the seat, keep the lever pushed down and apply your weight to the rear of seat.
q
To lower the angle at front of the seat, keep the lever pushed down and apply your weight to the front of seat.
q
Rear tilt
Pull lever (4) up to adjust angle of the rear of seat. (4 stages)
q
To raise the angle at rear of the seat, keep lever (3) pulled up, and stand up slightly to remove your weight from
the seat.
q
To lower the angle at rear of the seat, keep lever (3) pulled up, and apply your weight to the seat.
Amount of tilt: Up 13°, down 13°
q
Adjusting seat height
It is possible to move the seat up or down by combining adjustments forward tilt and rear tilt.
After setting the forward tilt or rear tilt to the desired height, operate the opposite part to set the seat horizontal then
secure in position.
Height adjustment: 60 mm
(D) Adjusting armrest height
The height of armrest (5) can be adjusted up or down by
changing the position of adjustment bolt (6) at the rear of the
armrest.
Armrest height adjustment: 33 mm
(E) Overall fore-and-aft adjustment of seat
Move lever (7) to right, set to the desired position, then release the lever. In this case, the operator's seat, left and
right control levers, and lock lever all slide together.
Fore-and-aft adjustment: 180 mm (9 stages)
(F) Adjusting suspension
Turn knob (8) to the right to make the suspension harder, or to the left to make the suspension softer. Adjust the
reading of the dial to match the operator's weight and select the optimum suspension.
REMARK
To obtain the optimum adjustment, turn the knob (8) so that the indicator of the weight display (kg) in the transpar-
ent portion of knob (8) is the same as the operator's weight.
3-120
OPERATION

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