c) Set the cutting depth to match the thickness
of the workpiece. The blade should not extend
more than one full tooth depth under the work-
piece.
d) Never hold the workpiece to be sawn in your
hand or over your leg. Fasten the workpiece
onto a stable working surface. It is important
to fasten the workpiece securely to minimise the
danger of bodily contact, jamming of the saw
blade or loss of control.
e) Hold the power tool only by the insulated
handles when you are carrying out work
in which the accessory tool may come into
contact with concealed power cables. Contact
with a live wire will also make exposed metal
parts of the power tool live and could give the
operator an electric shock.
f) When making longitudinal cuts, always use
a rip fence or a straight edge guide. This will
improve the accuracy of your cut and reduce
the likelihood of the saw blade jamming.
g) Always use saw blades of the correct size
and with an appropriate central fixing bore
(e.g. diamond-shaped or circular). Blades that
do not match the mounting hardware of the saw
will run eccentrically, causing loss of control.
h) Never use damaged or incorrect blade
washers or bolts. The saw blade washers and
screws have been specially designed to provide
optimum performance and operational safety
for your saw.
Further safety instructions for all saws
Kickback – causes and corresponding safety
instructions
▯
A kickback is a sudden reaction caused as a
result of the saw blade catching, jamming or
being falsely aligned, causing the saw to jump
up uncontrollably and out of the workpiece in
the direction of the operator;
▯
if the saw blade catches or jams in a narrowing
saw cut, the blade can no longer rotate and the
power of the motor throws the appliance back
in the direction of the operator;
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22
▯
if the saw blade twists in the saw cut or be-
comes misaligned, the teeth at the rear edge of
the saw blade can become caught in the wood
surface, causing the saw blade to jump out of
the cut and the saw to jump backwards in the
direction of the operator.
Kickback is a result of saw misuse and/or incorrect
operating procedures or conditions. This can be
avoided by taking proper precautions as given
below.
a) Hold the saw firmly and position your arms
so that they can absorb the force of a kick-
back. Always stand to the side of the saw
blade and never in line with it. If a kickback
occurs, the circular saw may jump backwards.
However, by taking appropriate precautions the
operator can control the kickback forces.
b) If the saw blade jams or you stop working,
switch the saw off and hold it steadily in the
workpiece until the saw blade has completely
stopped turning. Never attempt to remove
the saw from the workpiece or pull it back-
wards while the saw blade is still moving as
this could lead to a kickback. Investigate and
take corrective actions to eliminate the cause of
blade binding.
c) If you want to restart a saw that is still in the
workpiece, centre the saw blade in the cut
and check to ensure that the teeth are not
caught anywhere in the workpiece. If the saw
blade catches it can jump out of the workpiece
or cause a kickback when the saw is restarted.
PHKSA 12 A1