Komatsu PC290LC-6K Operation & Maintenance Manual page 99

Hydraulic excavator
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2.
Press working mode switch
duty operation) mode lamp lights up.
3.
Turn fuel control dial
4.
Set safety lock lever
from the ground.
5.
Operate bucket control lever
move the bucket cylinder and arm cylinder to the end of their stroke.
6.
Operate the bucket for 30 seconds and the arm for 30 seconds in
turn fully for 5 minutes.
REMARK
Turn swing lock switch
make the oil temperature rise more quickly.
NOTICE
When the work equipment is retraced, take care that it does not
interfere with the machine body or ground.
on the monitor panel until H.O (heavy
to the mid-range speed position.
to the FREE position and raise the bucket
and arm control lever
ON (ACTUATED) and operate the lever to
H/O
G/O
slowly to
12. OPERATION
F/O
L/O
B/O
2-55
(

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Pc290nlc-6k

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