Komatsu PC490-11, Installation And Instruction Manual

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When swinging the upper structure, do as follows.
1.
Before swinging, turn swing lock switch (1) OFF (can-
celed).
(a): ON position
(b): OFF position
2.
Check that swing lock pilot lamp (2) is not lit.
3.
Operate L.H. work equipment control lever (3) to swing the
upper structure.
(A): Swing LEFT
(B): Swing RIGHT
4.
When not performing the swing, turn swing lock switch (1)
ON (activated).
(a): ON position
(b): OFF position
5.
Check that swing lock pilot lamp (2) is lit.
METHOD FOR OPERATING WORK EQUIPMENT
k k
WARNING
If the levers are operated when the engine speed is decreased by the auto-deceleration function, the en-
gine speed will suddenly increase. Operate the levers carefully.
Use the R.H. and L.H. work equipment control levers to operate the work equipment.
When the levers are released, they return to NEUTRAL position and the work equipment is held in that position.
• Arm control
Move the L.H. work equipment control lever back and
forth.
You can operate the arm.
MACHINE OPERATIONS AND CONTROLS OPERATION
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