YATO YT-82168 Manual Original página 16

GB
cut material less than the tooth height.
Never hold the cut workpiece in hands or on leg. Attach the workpiece to a stable base. Good attachment of the workpiece
is important to avoid risk of contact with the body, jamming of the saw blade or loss of cutting control.
Hold the power saw by its insulated surfaces designed for that purpose during operation during which the saw blade
may have contact with live wires or the power saw power cord. Contact with "live wires" may also lead to metal parts of the
tool "becoming live" leading to electrocution of the operator.
When performing longitudinal cutting, always use a guide for longitudinal cutting or an edge guide. This will improve
cutting accuracy and reduce the possibility of the saw blade jamming.
Always use saw blades with correct dimensions and shapes of mounting holes (e.g. diamond or round shape). Saw
blades that do not fi t into the mounting bracket may work eccentrically, causing a loss of work control.
Never use damaged or improper washers or bolts to mount the saw blade. The washers and bolts mounting the saw blade
have been specially designed for the power saw to ensure optimum operation and safety of use.
Further safety instructions for all power saws
Reasons for kickback and kickback prevention
A kickback is a sudden reaction to the pressed, stopped or misaligned saw blade. It causes uncontrolled lifting and movement of
the power saw towards the operator.
If the saw blade is pressed or stopped during cutting, the blade is blocked and the motor reaction causes a sudden movement of
the power saw towards the operator.
If the saw blade is bent or misaligned, the teeth and the rear edge can escape from the saw cut and move towards the operator.
The rear kickback results from misuse of the power saw or improper procedures or operating conditions. It can be avoided by
taking appropriate precautions given below.
Hold the power saw fi rmly with both hands, with arms positioned to withstand the force of the rear kickback. Adopt a
body posture on one side of the power saw but not in the cutting line. Rear kickback can cause the power saw to move
backwards abruptly, but the force of the rear kickback can be controlled by the operator if appropriate precautions are taken.
When the saw blade jams or stops cutting for some reason, release the power switch button and do not move the saw in
the material until the saw blade stops completely. Never attempt to remove the power saw from the cut material or pull
it backwards until the saw blade moves or can cause a rear kickback. Examine and take corrective actions to eliminate the
cause of saw blade jamming.
In case of restarting the power saw in the workpiece, center the saw blade in the saw cut and check that the saw blade
teeth are not caught in the material. If the saw blade jams when the power saw is restarted, it may slide-out or cause the kick-
back against the workpiece.
Support large panels to minimise the risk of the blade being jammed and kicked back. Large panels tend to bend under their
weight. The supports should be placed under the panel on both sides, close to the cutting line and close to the edge of the panel.
Do not use blunt or damaged saw blades. Blunt or incorrectly positioned saw blade teeth make a narrow saw cut causing
excessive friction, saw blade jamming and rear kickback.
Adjust the cutting depth and saw blade angle clamps securely before cutting. Changing the saw blade adjustments during
cutting can cause jamming and rear kickback.
Take special care when performing "plunge cutting" towards existing walls or of other blind spaces. A protruding saw
blade can cut other objects, causing a rear kickback.
Safety instructions for plunge saws
Guard function
Check the guard for proper closing before each use. Do not use the power saw if the guard does not move freely and
does not close immediately. Never attach or leave the guard open. If the power saw is accidentally dropped, the guard can
be bent. Lift the guard with the pull-back handle and make sure that it moves freely and does not touch the saw or other part for
each angle and cutting depth adjustment.
Check the operation of the guard spring. If the guard and spring do not function properly, repair them before use. The
guard may operate slowly due to damaged
parts, sticky deposits or waste build up.
Make sure that the base of the power saw will not move during the "plunge cutting". The blade moving sideways will cause
a jam and is often the cause of kickback.
Always check whether the guard covers the saw blade before placing the power saw on the workbench or fl oor. The
unprotected edge of the saw blade will cause the power saw to retract cutting anything on its path. Be aware of the time it takes
to stop the saw blade after it is switched off .
Additional safety instructions for power saws with splitting wedges
Use a suitable splitting wedge adapted to the used saw blade. The splitting wedge must be thicker than the body of the saw
blade, but thinner than the spacing of the saw blade teeth.
Adjust the splitting wedge according to the description in this instructions manual. Incorrect adjustment, incorrect position-
ing and misalignment may render the splitting wedge ineff ective in preventing rear kickback.
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