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Causes and Operator Prevention ofand check that the sides of the wheel are
Kickback: not engaged into the material. If wheel is
Kickbackis a sudden reaction to a pinched,binding, it may walk up or kickback from the
bound or misaligned rotating wheel. Theworkpiece as the machine is restarted.
wheel may stall and cause an uncontrolledWheel depth adjusting locking levers/nuts
machine to back out of the kerf toward the
must be tight and secure before making a
operator.cut. If depth adjustment shifts while cutting,
If an abrasive wheel or diamond wheelit may cause binding and kickback. Using
becomes twisted, canted or misaligned inthe machine with an excessive depth of cut
the cut, the side of the wheel that is enteringsetting increases loading on the unit and
into the material can dig into the top surfacesusceptibility to twisting of the wheel in the
of the material causing the wheel to climbkerf. It also increases the surface area of the
out or kickback outof the kerf.wheel available for pinching under wheel
Abrasive wheels may also shatter undertwisting conditions or misalignment.
these conditions causing pieces orUse extra caution when making a OPocket
fragments to strike or impale the operatorCut� into existing walls or other blind
and bystanders. Kickback or shatteredareas. The protruding wheel may cut
wheels are the result of tool misuse and/orobjects that can cause kickback.
incorrect operating procedures or conditionsSome dust created by
and can be avoided by taking proper!WARNING
power sanding, sawing,
precautions as given below:grinding, drilling, and other construction
Maintain a firm grip with both hands onactivities contains chemicals known to
the machine handles and position yourcause cancer, birth defects or other
body and arm to allow you to resistreproductive harm. Some examples of
kickback forces. The operator can controlthese chemicals are:
kickback forces, if proper precautions are
taken.Y Lead from lead-based paints,
When wheel is binding, or whenY Crystalline silica from bricks and cement
and other masonry products, and
interrupting a cut for any reason, release
the trigger and hold the machineY Arsenic and chromium from chemically-
motionless in the material until the wheeltreated lumber.
comes to a complete stop. Never attempt
Your risk from these exposures varies,
to remove the machine from the work
while the wheel is in motion or kickbackdepending on how often you do this type of
work. To reduce your exposure to these
may occur. Investigate and take corrective
action to eliminate the cause of wheelchemicals: work in a well ventilated area,
and work with approved safety equipment,
binding.
such as those dust masks that are specially
When restarting a machine in adesigned to filter out microscopic particles.
workpiece, center the wheel in the kerf
Sound and Vibration Informationthe workpiece and the workstation design,
These values stated below were obtained byas well as upon the exposure time and the
laboratory testing in accordance withphysical condition of the user.
Standard EN 50 144.
Wear hearing protection.!WARNING
The typical sound pressure level is 89 dB (A). Prolonged exposure to high
The typical sound power level is 102 dB (A).intensity noise can cause hearing loss.
The typical weighted vibration is 1.8 m/s2.Use thick cushioned!WARNING
gloves and limit the
Values measured in individual work placesexposure time by taking frequent rest
may be higher than the declared values. Theperiods. Vibration caused by the use of
actual exposure values and risk of harmpower tools may be harmful to your hands
experienced by an individual user are unique
and arms.
and depend upon the way the user works,
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ACEC
