XCMG QAY220 Operation Manual page 142

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Chapter 9
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9-8 General cautions in operation
QAY220 All Terrain Crane Operation Manual
Illustrations
Perform the operation of cylinder pin
and boom pin out or in slowly.
Do not abruptly move the elevating
control lever, especially under load.
Before swinging the boom, make sure
that area in the swing path is clear off
personnel and obstructions.
Before operation of slewing, make sure
that the turntable lock pin is extracted.
Before swinging the boom, check the
preset position of the free sliding switch.
Never move the switch during swinging.
Cautions Remarks
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