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Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush
or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power tool to be forced in the direction opposite of the
accessory’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 direction of the wheel’s move-
ment at the point of pinching. Abrasive wheels may also break under these conditions. Kick-
back is the result of power tool misuse and/or incorrect operating procedures or conditions
and can be avoided by taking proper precautions as given below.
Maintain a fi rm grip on the power tool and position your body and arm to allow you
to resist kickback forces. Always use auxiliary handle, if provided, for maximum control
over kickback or torque reaction during start-u
p. The operator can control torque reactions
or kickback forces, if proper precautions are taken.
Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
Do not position your body in the area where power tool will move if kickback occurs.
Kickback will propel the tool in direction opposite to the wheel’s movement at the point of
snagging.
Use special care when working corners, sharp edges etc. Avoid bouncing and snagging
the accessory.
Corners, sharp edges or bouncing have a tendency to snag the rotating acces-
sory. It can cause loss of control or kickback.
Do not attach a saw chain woodcarving blade or toothed saw blade.
Such blades create
frequent kickback and loss of control.
Safety warnings specifi c for grinding and abrasive cutting-off operations
Use only wheel types that are recommended for your power tool and the specifi c guard
designed for the selected wheel.
Wheels for which the power tool was not designed cannot
be adequately guarded and are unsafe.
The guard must be securely attached to the power tool and positioned for maximum
safety.
It means that the least amount of wheel is exposed towards the operator. The guard
helps to protect the operator from broken wheel fragments, accidental contact with wheel.
Wheels must be used only for recommended applications. For example: do not grind
with the side of cut-off wheel. Abrasive cut-off wheels are intended for peripheral grind-
ing.
Side forces applied to these wheels may cause them to shatter.
Always use undamaged wheel fl anges that are of correct size and shape for your se-
lected wheel.
Proper wheel fl anges support the wheel thus reducing the possibility of wheel
breakage. Flanges for cut-off wheels may be diff erent from grinding wheel fl anges.
Do not use worn down wheels from larger power tools.
Wheels intended for larger power
tool are not suitable for the higher speed of a smaller tool and may burst.
Additional safety warnings specifi c for abrasive cutting-off operations
Do not “jam” the cut-off 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.
Do not position your body in line with and behind the rotating wheel.
When the wheel, at
the point of operation, is moving away from your body, the possible kickback may propel the
spinning wheel and the power tool directly at you.
When wheel is binding or when interrupting a cut for any reason, switch off the po-
wer tool and hold the power tool motionless until the wheel comes to a complete
stop.
Never attempt to remove the cut-off 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.
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