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• When the wheel is pinched or bound tightly by the workpiece,
the wheel stalls and the motor reaction drives the unit rapidly
back toward or away from the operator.
• Kickback is the result of tool misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper
precautions as given below:
• Maintain a firm grip with both hands on the unit and posi-
tion your body and arm to allow you to resist kickback
forces. Kickback forces can be controlled by the operator, if
proper precautions are taken.
• When wheel is binding, or when interrupting a cut for any
reason, release the trigger and hold the unit motionless
in the material until the wheel comes to a complete stop.
Never attempt to remove the unit from the work or pull
the unit backward while the wheel is in motion or kick-
back may occur. Investigate and take corrective actions to
eliminate the cause of wheel binding.
• When restarting a cut-off tool in the workpiece, check
that the wheel is not engaged into the material. If wheel is
binding, it may walk up or kickback from the workpiece as the
tool is restarted.
• Support large panels to minimize the risk of wheel pinch-
ing and kickback. Large panels tend to sag under their own
weight. Support must be placed under the panel on both
sides, near the line of cut and near the edge of the panel.
WARNING: Some dust created by power sanding, sawing,
grinding, drilling, and other construction activities contains chem-
icals known to cause cancer, birth defects, or other reproductive
harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry
products, and
• arsenic and chromium from chemically-treated lumber (CCA).
Your risk from these exposures varies, depending on how often
you do this type of work. To reduce your exposure to these chem-
icals: work in a well ventilated area, a nd work with approved safe-
ty equipment, such as those dust masks that are specially
designed to filter out microscopic particles.
• Avoid prolonged contact with dust from power sanding,
sawing, grinding, drilling, and other construction activities.
Wear protective clothing and wash exposed areas with
soap and water. Allowing dust to get into your mouth, eyes, or
lay on the skin may promote absorption of harmful chemicals.
WARNING: Use of this tool can generate and/or disburse dust,
which may cause serious and permanent respiratory or other injury.
Always use NIOSH/OSHA approved respiratory protection appro-
priate for the dust exposure. Direct particles away from face and
body.
CAUTION: Use extra care when working into a corner because
a sudden, sharp movement of the grinder may be experienced
when the wheel or other accessory contacts a secondary surface
or a surface edge.
CAUTION: Wear appropriate personal hearing protection
during use. Under some conditions and duration of use, noise
from this product may contribute to hearing loss.
COMPONENTS (Fig. 1)
A. Paddle Switch H. Threaded Clamp Nut
(D28402, D28402N) I. Guard
B. Lock-Off Lever J. Lock On Button (D28402)
C. Spindle Lock Button K. Dust Ejection System
D. Spindle (not shown) (DES)
E. Side Handle L. Slider Switch (D28110,
F. 4-1/2" Grinding Wheel D28112)
G. Anti-Lockup Backing Flange