Komatsu PC290LC-11 Operation & Maintenance Manual page 227

OPERATION
METHOD FOR ADJUSTING SEAT UNIT IN FORE-AND-AFT DIRECTION
Pull the fore-aft adjustment lever 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 to adjust the hardness of the suspension.
• If you press the suspension switch, the suspension be-
comes hard.
• If you pull the suspension switch, the suspension becomes
soft. (Air release sound is heard.)
Weight adjustment range: 60 to 150 kg
METHOD FOR HEATING SEAT
Heated seat (if equipped)
Turn the seat heater switch ON.
(a): OFF position
(b): ON position
The seat cushion and backrest become warm.
MACHINE OPERATIONS AND CONTROLS
3-155