Komatsu D31EX-21, Operation & Maintenance Manual, Page: 138 / 256

OPERATION
OPERATION
3-86
3. Set the safety lock lever (7) to the FREE position.
4. Put blade control lever (8) in the RAISE position to raise
the blade 40 to 50 cm off the ground.
5. Depress decelerator pedal (5).
6. Move steering, direction and gear shift lever (4) to the F
(forward) or R (reverse) position to move the machine off.
REMARK
Check that the backup alarm sounds when joystick is placed in
REVERSE. If the alarm does not sound, please contact your
Komatsu distributor.
When the steering, directional, and gearshift lever is placed in
FORWARD or REVERSE, the machine may deviate slightly to
the left or right, but this is caused by the actuation of the
straight-travel compensation mechanism and does not indicate
any abnormality.
Free
Lock
Raise
Hold
Forward
Reverse