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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.
b. 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.
c.
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.
d. When restarting a saw in the workpiece, center the saw blade in the kerf and check that
teeth are not engaged into the material. If saw blade is binding, it may walk up or KICKBACK
from the workpiece as the saw is restarted.
e.
Support large panels to minimize 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.Do not use dull or damaged blade. Dull blades
produce a 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
11. Use only recommended blades, rated at the machine’s maximum rated RPM or higher with correct arbor
hole.
Lower guard function
a) Check lower guard for proper closing before each use. Do not operate the saw if lower guard
does not move freely and close instantly. Never clamp or tie the lower guard into the open
position. If saw is accidentally dropped, lower guard may be bent. Raise the lower guard with the
retracting handle and make sure it moves freely and does not touch the blade or any other part, in
all angles and depths of cut.
b) Check the operation of the lower guard spring. If the guard and the spring are not operating
properly, they must be serviced before use. Lower guard may operate sluggishly due to
damaged parts, gummy deposits, or a build-up of debris.
c) Lower guard may be retracted manually only for special cuts such as "plunge cuts" and
"compound cuts". Raise lower guard by retracting handle and as soon as blade enters the material,
the lower guard must be released. For all other sawing, the lower guard should operate
automatically.
d) Always observe that the lower 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.
12. Tighten blade retaining bolt and all clamps before operating.
13. Secure workpiece properly. Workpiece should be straight and firmly clamped to avoid possible
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