Hitachi CM 75EAP Handling Instructions Manual page 5

WARNING
○ Exhaust gases from the engine are hot and may contain
sparks which can cause a fi re.
Also, sparks are generated when cutting metal with this
machine.
Never use the machine where fl ammable substances
and gases are present.
○ Sparks generated from cutting operations can cause
fi res. Always have adequate fi re extinguishing equipment
available.
○ When relocating to a new work area, be sure to shut off
the machine and ensure that all cutting attachments are
stopped.
○ Always ensure that the engine is shut off and any cutting
attachments have completely stopped before moving.
Gyroscopic forces occur when moving while the engine
is operating and the cut-off wheel is rotating. This may
cause you to lose control of the machine.
○ Never cut materials that consist of asbestos.
○ Never leave the engine running while unattended
(e.g. on the ground).
Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel. Pinching or snagging causes sudden stalling
of the rotating wheel which in turn causes the machine to
be forced in the direction opposite of the wheel's rotation at
the point of the binding. For example, if an abrasive wheel is
snagged or pinched by the workpiece, the edge of the wheel
that is entering into the pinch point can dig into the surface of
the material causing the wheel to climb out or kick out. The
wheel may either jump toward or away from the operator,
depending on the direction of the wheel's movement at the
point of pinching. Abrasive wheels may also break under
these conditions.
Either of these reactions may cause you to lose control of the
machine which could result in serious personal injury.
Kickback is the result of cut-off machine misuse and/or
incorrect operating procedures or conditions that can be
avoided by taking proper precautions as given below.
○ Kickback occurs when the upper angle of the cut-off
wheel is used or touches an object when the cut-off
wheel is running. Pay special attention not to touch the
upper angle of the cut-off wheel to any object. (Fig. 2,
Fig. 3)
Fig. 2
Fig. 3
○ Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the cut-off wheel.
Corners, sharp edges or bouncing have a tendency to
snag the rotating wheel and cause loss of control or
kickback. (Fig. 4)
○ Do not use cut-off wheels other than those approved or
recommended by the manufacturer. Never use blades
designed for cutting wood. Failure to comply could result
in personal accidents or injury.
○ Do not jam the wheel or apply excessive pressure. Do
not attempt to make an excessive depth of cut.
Overstressing the wheel increases the loading and
susceptibility to twisting or binding of the wheel in the cut
and the possibility of kickback or wheel breakage.
○ If the wheel binds or a cut is interrupted for any reason,
stop the engine and hold the machine motionless until
the wheel comes to a complete stop. Never attempt
to remove the wheel from the cut while the wheel is in
motion otherwise kickback may occur. Investigate and
take corrective action to eliminate the cause of wheel
binding.
○ Do not restart the cutting operation with the wheel in the
workpiece. After allowing the wheel to reach full speed,
carefully re-enter the cut. The wheel may bind, walk up or
kickback if the power tool is restarted in the workpiece.
○ Provide supports for panels or any oversized workpiece
to minimize risk of wheel pinching and kickback.
Large workpieces tend to sag under their own weight.
Supports must be placed under the workpiece so that
the cutting surface to open. (Fig. 5)
Maintenance safety
○ Maintain the machine according to recommended
procedures.
○ Disconnect the
maintenance except for carburetor adjustments.
○ Keep others away when making carburetor adjustments.
○ Use only genuine HITACHI replacement parts as
recommended by the manufacturer.
CAUTION
Do not disassemble the recoil starter. There is a
possibility of personal injury with recoil spring.
WARNING
Improper maintenance could result in serious engine
damage or in serious personal injury.
Transport and storage
○ Carry the machine by hand with the engine stopped and
the muffl er away from your body.
○ Allow the engine to cool, empty the fuel tank and
carburetor, and secure the machine before storing or
transporting.
5
Fig. 4
Fig. 5
spark plug before performing