Komatsu PC300LC-8 Operation & Maintenance Manual page 177

MACHINE OPERATIONS AND CONTROLS MACHINE OPERATIONS AND CONTROLS
(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 (1.3 in)
(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 (7.1 in) (9 stages)
(F) Adjusting suspension (if equipped)
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 transparent
portion of knob (8) is the same as the operator's weight.
(G) Adjusting suspension
(air suspension seat (if equipped))
Push switch (9) to make the suspension harder.
Pull switch (9) to release the air and make the suspension softer.
(The sound of air being released can be heard.)
Range of adjustment for operator's weight: 60-150 kg
(H) Heated seat
Turn the heated seat switch ON to warm the seat cushion and the seat back.
3 - 122
OPERATION OPERATION