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EnGLIsh
Causes and Operator Prevention
of Kickback
•
Kickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to lift up
and out of the workpiece toward the operator;
•
When the blade is pinched or bound tightly by the kerf closing
down, the blade stalls and the motor reaction drives the unit
rapidly back toward the operator;
•
If the blade becomes twisted or misaligned in the cut, the teeth
at the back edge of the blade can dig into the top surface of
the wood causing the blade to climb out of the kerf and jump
back toward the operator.
Kickback is the result of saw misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper
precautions as given below:
a ) Maintain a firm grip with both hands on the saw and
position your arms to resist kickback forces. Position
your body to either side of the blade, but not in line
with the blade. Kickback could cause the saw to jump
backwards, but kickback forces can be controlled by the
operator, if proper precautions are taken.
b ) When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the saw
motionless in the material until the blade comes to
a complete stop. Never attempt to remove the saw
from the work or pull the saw backward while the
blade is in motion or kickback may occur. Investigate
and take corrective actions to eliminate the cause of
blade binding.
c ) When restarting a saw in the workpiece, centre the
saw blade in the kerf and check that saw teeth are
not engaged into the material. If saw blade binds, it
may walk up or kickback from the workpiece as the saw
is restarted.
d ) Support large panels to minimise the risk of blade
pinching and kickback. Large panels tend to sag
under their own weight. Supports must be placed under
the panel on both sides, near the line of cut and near the
edge of the panel.
e ) Do not use dull or damaged blades. Unsharpened
or improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
f ) Blade depth and bevel adjusting locking levers
must be tight and secure before making cut. If blade
adjustment shifts while cutting, it may cause binding
and kickback.
g ) Use extra caution when sawing into existing walls or
other blind areas. The protruding blade may cut objects
that can cause kickback.
Safety Instructions for Plunge-Type Saws
a ) Check guard for proper closing before each use.
Do not operate the saw if guard does not move
freely and enclose the blade instantly. Never clamp
or tie the guard with the blade exposed. If saw is
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accidentally dropped, guard may be bent. Check to
make sure that guard moves freely and does not touch the
blade or any other part, in all angles and depths of cut.
b ) Check the operation and condition of the guard
return spring. If the guard and the spring are not
operating properly, they must be serviced before
use. Guard may operate sluggishly due to damaged parts,
gummy deposits, or a build-up of debris.
c ) Assure that the base plate of the saw will not shift
while performing the "plunge cut." Blade shifting
sideways will cause binding and likely kickback.
d ) Always observe that the guard is covering the blade
before placing saw down on bench or floor. An
unprotected, coasting blade will cause the saw to
walk backwards, cutting whatever is in its path. Be
aware of the time it takes for the blade to stop after switch
is released.
Additional Safety Instructions for All Saws
with Riving Knife
a ) Use the appropriate saw blade for the riving knife.
For the riving knife to function, the body of the blade must
be thinner than the riving knife and the cutting width of
the blade must be wider than the thickness of the riving
knife.
b ) Adjust the riving knife as described in this
instruction manual. Incorrect spacing, positioning
and alignment can make the riving knife ineffective in
preventing kickback.
c ) For the riving knife to work, it must be engaged in
the workpiece. The riving knife is ineffective in preventing
kickback during short cuts.
d ) Do not operate the saw if riving knife is bent. Even a
light interference can slow the closing rate of a guard.
Additional Safety Instructions for Plunge-
Type Saws
Wear ear protectors. Exposure to noise can cause
•
hearing loss.
Wear a dust mask. Exposure to dust particles can cause
•
breathing difficulty and possible injury.
Do not use blades of larger or smaller diameter than
•
recommended. For the proper blade rating refer to the
technical data. Use only the blades specified in this manual,
complying with EN 847-1.
Use only saw blades that are marked with a speed equal
•
or higher than the speed marked on the tool.
Never use abrasive cut-off wheels.
•
Residual Risks
In spite of the application of the relevant safety regulations
and the implementation of safety devices, certain residual risks
cannot be avoided. These are:
•
Impairment of hearing.
•
Risk of personal injury due to flying particles.
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