Komatsu PC450-8 Operation & Maintenance Manual page 36

SAFETY LABELS
(16) Prohibition of jump start (09842-A0481)
q
Start the engine only after sitting down in the operator's seat.
q
Do not attempt to start the engine by short-circuiting the
engine starting circuit. Such an act may cause a serious
bodily injury or fire.
(17) Caution when swinging or traveling in reverse
When swinging or backing up excavator, press button to
change display mode on monitor so you can see rear and
side of machine.
Before moving, look around and at mirror and monitor to
confirm that no one is around the machine. Failure to do
so can result in serious injury or death.
(18) Overload caution (208-00-76910).
q
Do not exceed the safe lifting loads.
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WARNING
SAFETY