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General Power Tool Safety Warnings; Save All Warnings And Instruc- Tions For Future Reference; Cut-Off Machine Safety Warnings - Makita DLW140 Instruction Manual

Cordless portable cut-off
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General power tool safety warnings

Read all safety warnings, instruc-
tions, illustrations and specifications provided with this
power tool. Failure to follow all instructions listed below
may result in electric shock, fire and/or serious injury.
Save all warnings and instruc-
tions for future reference.
The term "power tool" in the warnings refers to your mains-oper-
ated (corded) power tool or battery-operated (cordless) power tool.

Cut-off machine safety warnings

Position yourself and bystanders away from
the plane of the rotating wheel. The guard helps
to protect the operator from broken wheel frag-
ments and accidental contact with wheel.
Use only bonded reinforced cut-off wheels for your
power tool. Just because an accessory can be attached
to your power tool, it does not assure safe operation.
The rated speed of the accessory must be at
least equal to the maximum speed marked on
the power tool. Accessories running faster than
their rated speed can break and fly apart.
Wheels must be used only for recommended
applications. For example: do not grind with the
side of a cut-off wheel. Abrasive cut-off wheels
are intended for peripheral grinding, side forces
applied to these wheels may cause them to shatter.
Always use undamaged wheel flanges that are
of correct diameter for your selected wheel.
Proper wheel flanges support the wheel thus
reducing the possibility of wheel breakage.
The outside diameter and the thickness of your
accessory must be within the capacity rating
of your power tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
The arbour size of wheels and flanges must prop-
erly fit the spindle of the power tool. Wheels and
flanges with arbour holes that do not match the mount-
ing hardware of the power tool will run out of balance,
vibrate excessively and may cause loss of control.
Do not use damaged wheels. Before each use, inspect
the wheels for chips and cracks. If the power tool or
wheel is dropped, inspect for damage or install an
undamaged wheel. After inspecting and installing the
wheel, position yourself and bystanders away from
the plane of the rotating wheel and run the power tool
at maximum no load speed for one minute. Damaged
wheels will normally break apart during this test time.
Wear personal protective equipment. Depending
on application, use face shield, safety goggles or
safety glasses. As appropriate, wear dust mask,
hearing protectors, gloves and shop apron capable
of stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping flying
debris generated by various operations. The dust mask
or respirator must be capable of filtrating particles
generated by your operation. Prolonged exposure to
high intensity noise may cause hearing loss.
10. Keep bystanders a safe distance away from
work area. Anyone entering the work area must
wear personal protective equipment. Fragments
of workpiece or of a broken wheel may fly away and
cause injury beyond immediate area of operation.
Regularly clean the power tool's air vents. The
motor's fan can draw the dust inside the housing
and excessive accumulation of powdered metal
may cause electrical hazards.
12. Do not operate the power tool near flammable
materials. Do not operate the power tool while
placed on a combustible surface such as
wood. Sparks could ignite these materials.
13. Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel. Pinching or snagging causes rapid stalling
of the rotating wheel which in turn causes the uncontrolled
cutting unit to be forced upwards toward the operator.
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 mate-
rial causing the wheel to climb out or kick out. Abrasive
wheels may also break under these conditions.
Kickback 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 firm grip on the power tool and posi-
tion your body and arm to allow you to resist
kickback forces. The operator can control upward
kickback forces, if proper precautions are taken.
Do not position your body in line with the
rotating wheel. If kickback occurs, it will propel
the cutting unit upwards toward the operator.
Do not attach a saw chain, woodcarving blade,
segmented diamond wheel with a peripheral gap
greater than 10 mm or toothed saw blade. Such
blades create frequent kickback and loss of control.
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 kick-
back or wheel breakage.
When the wheel is binding or when interrupt-
ing a cut for any reason, switch off the power
tool and hold the cutting unit 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 in the
workpiece. Let the wheel reach full speed and
carefully re-enter the cut. The wheel may bind,
walk up or kickback if the power tool is restarted in
the workpiece.
Support any oversized workpiece to minimize
the risk of wheel pinching and kickback. Large
workpieces tend to sag under their own weight.
Supports must be placed under the workpiece
near the line of cut and near the edge of the work-
piece on both sides of the wheel.


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