Komatsu PC450-8 Operation & Maintenance Manual page 136

DETAILED CONTROLS AND GAUGES
Fuel Control Dial
Dial (2) adjusts the engine speed and output.
(a) Low idling (MIN): Turned fully to the left
(b) Full speed (MAX): Turned fully to the right
Lamp Switch
Switch (3) is used to turn on the LH deck lamp, RH deck lamp,
Boom LH lamp, Boom RH lamp (if equipped), CW lamp (if
equipped) and monitor lighting.
(a) Night position: Lamps light up and monitor illumination is set
to night mode
(b) Day position: Lamps light up and monitor illumination is set
to day mode
(c) OFF position: Lamps go out.
(The monitor illumination is set to day mode.)
Swing Lock Switch
q
When not using the swing operation, e.g. when traveling, put the swing lock switch to the OFF posi-
tion.
q
On slopes, even when the swing lock switch is at the ON position, the weight of the work equipment
may cause the upper structure to swing if the swing control lever is operated in the downhill direction.
This switch (4) is used to lock the upper structure so that it can-
not swing.
(a) ON position (actuated): The swing lock is always applied,
and the upper structure will not swing even if the swing is oper-
ated. In this condition, the swing lock lamp lights up.
(b) OFF position (canceled): The swing lock is released, when
operating the swing control lever, allowing the upper structure
to swing.
3-70
WARNING
OPERATION