Komatsu PC450-8 Operation & Maintenance Manual page 433

HIGH REACH DEMOLITION EQUIPMENT 27M
OPERATING WORK EQUIPMENT
If any lever is operated when in the deceleration range, the
engine speed will suddenly increase, so be careful when
operating the levers.
Do not put your foot on the pedal except when operating it. If
you rest your foot on the pedal during operations, and you
depress the pedal by mistake, the attachment may move sud-
denly and cause serious damage or injury.
q The work equipment is operated with the left-hand work
equipment lever, right-hand work equipment lever and right-
hand pedal.
q The left-hand work equipment lever is used to operate the
arm and swing the machine. The right-hand work equipment
lever is used to operate the boom and bucket. The right-hand
pedal is used to operate the intermediate link.
The movements of the levers, right-hand pedal and work
equipment is shown in the figure on the right. If the levers and
the right-hand pedal are released, they return to their neutral
positions and the work equipment is held at the current posi-
tion.
q While the machine is stopped, if the work equipment lever or
the right-hand pedal is returned to the neutral position, the
engine speed is set to the medium level by the auto-decelera-
tor, even if the fuel control dial is at the FULL position.
Supplementary explanation
The work equipment can be lowered to the ground by operating
the levers and right-hand pedal within 15 seconds after the
engine has stopped.
WARNING
WARNING
Swing operation
Boom operation
Bucket cylinder operation
Intermediate link operation
Right pedal
OPERATION
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