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Komatsu PC450-8 Operation & Maintenance Manual page 81

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OPERATION
DETAILED CONTROLS AND GAUGES
OVERLOAD CAUTION (When lifting)
This monitor (7) warns that the machine is close to tipping due
to the load (an audible warning is also given), if the warning is
given, lower the load. Refer the lifting capacity chart for safe
load.
3-15

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