Komatsu PC1250-11, Original Instructions Manual, Page: 209 / 452

1.
Loosen knob (1) at the rear of the armrest.
2.
Pull plunger (2).
3.
Adjust the height of armrest (3) while pulling plunger (2).
4.
Push back plunger (2) after aligning it to the height adjust-
ment hole of armrest (3).
5.
Tighten knob (1) at the rear of the armrest.
NOTICE
If you loosen knob (1) at the rear of the armrest too
much, it touches the stopper in cover (4) and you can-
not adjust the armrest height. Take care.
METHOD FOR ADJUSTING ARMREST ANGLE
Angle of the armrest can be adjusted vertically by turning ad-
justment dial (7) at the bottom of the armrest (5).
Angle adjustment: 9 ° in lower direction, 4 ° in upper direction
METHOD FOR ADJUSTING SEAT UNIT IN FORE-AND-AFT DIRECTION
Pull the fore-aft adjustment lever (8) to the right, set the seat to the desired position, then release the lever.
The operator's seat, right and left control levers, and lock lever move together.
Fore-and-aft adjustment: 180 mm (9 stages)
METHOD FOR ADJUSTING AIR SUSPENSION SEAT HARDNESS
Air suspension seat (if equipped)
Operate the suspension switch (9) to adjust the hardness of the suspension.
OPERATION MACHINE OPERATIONS AND CONTROLS
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