Hitachi 120-3 class Operator's Manual page 177

Hydraulic excavator
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• Breaker operation speed is faster than crusher operation so
that the recommended breaker max. weights are reduced
more than those of the crushers.
• The weight is not the only factor to be considered when
selecting a breaker. Select proper manufacturers' breaker
models while referring to the table on the next page.
• Avoid installing an attachment with a long overall length.
Damage to the front attachment may result.
• When an attachment of the max. weight is installed, always
operate the attachment over the front or rear side of the
machine. In addition, avoid operating the attachment at the
maximum reach.
• Crushers are heavier than breakers. Slowly move the control
lever when operating a crusher.
OPERATING THE MACHINE
5-27

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