Komatsu D31EX-21, Operation & Maintenance Manual, Page: 248 / 256

DELUXE SEAT
ATTACHMENTS, OPTIONS
6-8
(D) Height adjustment of seat
q
Turn lever (4) to adjust the height of the seat.
q
If the lever is turned clockwise, the seat is heightened. If the former is turn counterclockwise, the latter is low-
ered.
If you apply your weight to the seat, the lever becomes heavy. Accordingly, do not apply your weight.
After adjusting the height, release the lever to lock the seat.
(Height adjustment distance: Stepless, 50 mm)
(E) Adjusting direction of seat
Pull up lever (5) to unlock the seat, and the seat can be turned by hand to the position of 15° on the right.
After changing the direction of the seat, return the lever securely to lock the seat.
q
Change the direction of the seat to the right for the ease of operation of the ripper.