Hitachi ZX27U-2 Operator's Manual page 108

3. Do not operate the breaker with the hydraulic cylin-
ders fully extended or retracted. When operating the
breaker, position each hydraulic cylinder so that an
allowance of more than 50 mm (2in) from the stroke
end can be given before the cylinder piston comes in
contact with the cylinder head or bottom. Failure to do
so may result in damage to the hydraulic cylinders,
arm and/or boom.
4. Do not operate the breaker in water. Seals may be-
come broken due to rusting of the breaker, possibly
allowing rust, dust, and/or water to enter the hydraulic
circuit so that damage to the hydraulic components
on the base machine may result.
5. Do not use the breaker to lift objects. Serious acci-
dents may result due to the machine tipping over
and/or the lifted load coming off.
6. Do not operate the breaker over the side of the ma-
chine. The machine stability is reduced, possibly re-
sulting in the machine tipping over. In addition, the
service lifetime of the undercarriage may become
shorter due to receiving more severe breaker opera-
tion reaction force.
OPERATING THE MACHINE
5-20
WRONG
RIGHT
WRONG
WRONG
M1M7-05-021
WRONG
M104-05-059
WRONG
M1M7-05-022
RIGHT
M1M7-05-017