Hitachi ZAXIS 120-6 class Operator's Manual page 79

SAFETY SIGNS
12.
Be careful to avoid skin contact with high temperature
part during operation or immediately after stopping the
machine. Otherwise burns may result.
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13.
Sign indicates a crush hazard by rotation of upper structure
of the machine.
Keep away from swinging area of machine.
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14.
Sign indicates a burn hazard from spurting hot water or oil if
radiator or hydraulic oil tank is uncapped while hot.
Allow radiator or hydraulic oil tank to cool before removing
cap.
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