Komatsu PC800-8 Operation & Maintenance Manual page 150

Hydraulic excavator
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OPERATION
MACHINE OPERATIONS AND CONTROLS
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 angle
Armrest (5) can be made to spring up by hand approx. 90°.
In addition, by turning the bottom (6) of the armrest by hand it is possible to make fine vertical adjustments of the
armrest angle.
Armrest adjustment angle: 25°.
REMARK
If the seat back is tipped to the front without raising the armrest (5), armrest will rise automatically.
If the cable at the rear of armrest (5) is tense (when the seat back is tipped to the front), armrest (5) cannot be
adjusted by turning dial (6). When adjusting the angle of armrest (5), set the seat back to a position where it is
easy to carry out operations, then adjust the armrest.
(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
In order to function correctly, the seat suspension must be adjusted to suit the drivers weight and is done so by
pressing or pulling control knob (8) The seat should be adjusted so that there is equal travel in both upward and
downward directions. (weight range 60 ~ 150 Kg)
.
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.
3-86

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