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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:
1. when the blade is pinched or bound
tightly, the blade stalls and the motor
reaction drives the unit rapidly back
toward the operator.
2. 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 workpiece causing the blade
to close in around the material and jump
back towards 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) If the blade is binding, or when
interrupting a cut for any reason, release
the trigger and hold the saw motionless
in the material until the blades come to a
complete stop.
Never attempt to remove the
saw from the work or pull the saw backward
while the blades are 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 cutting groove
and check that saw 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.
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) Blade depth and bevel adjusting locking
levers must be tight and secure before
making a cut.
If the blade adjustment shifts
while cutting it may cause binding and kickback.
f) do not use dull or damaged blades.
Unsharpened or improperly set blades
produce a narrow cutting groove causing
excessive friction, blade binding and kickback.
g) use extra caution when making a
“plunge cut” into existing walls or other
blind areas.
The protruding blade may cut
objects that can cause kickback.
Further Safety Instructions
Caution:
Unplug the power tool before
making these checks.
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 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.
