YATO YT-82151 Manual Original página 15

GB
object being processed. Adjust a cutting depth which is adequate for the thickness of the object being processed. It is
recommended to make sure the disc protrudes below the material being cut by less than the height of a tooth.
Do not ever keep the material being cut in your hands or support it on your leg. Fix the object to be processed to a stable
base. Adequate fi xing of the object to be processed is crucial to avoid the danger of any contact with the body, seizure of the saw
or a loss of control over the cutting process.
Keep the sawing machine by insulated surfaces provided for this purpose during tasks, when the saw touch live con-
ducts or its own power supply cable. Any contact with „live conducts" may also cause the metal parts of the tool to be live, which
might cause electric shock to the operator.
During longitudinal cutting always use the guide for longitudinal cutting or the guide for edges. This will enhance the
precisions of cutting and reduce the possibility of seizure of the saw.
Always use saws of correct dimensions and shape of the fi xing holes (e.g. rhomboidal or circular holes). Saws which do
not fi t the chuck may work eccentrically, leading thus to a loss of control over the tool.
To fi x the saw do not ever use damaged or inadequate washers or bolts. Washers and bolts which fi x the saws have been
specially designed for the sawing machine, to ensure its optimum functioning and safety of use.
Causes and prevention of recoil
Recoil is a sudden reaction to a squeezed, stopped or misaligned circular saw, and it causes an incontrollable lifting and move-
ment of the sawing machine towards the operator.
If the saw is squeezed or stopped during cutting, then the edge is locked and the reaction of the motor causes a sudden movement
of the sawing machine towards the operator.
If the saw is deformed or is misaligned, then the teeth and the rear edge may come out of the saw cut and move towards the operator.
Backward recoil is a result of inadequate operation of the sawing machine or incorrect procedures or operating conditions and it
may be avoided adapting necessary safety measures, which are indicated below.
Keep the sawing machine with strength using both your hands, with the arms in a position that will resist a backward
recoil. Adapt a position of the body at one side of the sawing machine, but not in the cutting line. Backward recoil may
cause a sudden movement of the sawing machine, but the strength of backward recoil may be controlled by the operator, if
adequate precautions have been taken.
When the saw jams or when cutting is interrupted for any reason, release the button and keep the sawing machine still
in the material until the disc has completely stopped. Do not ever try to remove the sawing machine from the material
which is being cut, or pull the sawing machine backwards while the saw disc is moving or may cause backward recoil.
Inspect the causes and take corrective actions, in order to eliminate the reasons why the saw jams.
If the cutting with sawing machine is resumed in the same element, then centre the disc saw in the saw cut and make
sure the teeth of the saw are not caught in the material. If the disc saw jams when the sawing machine is set in motion again,
then it may come out or cause backward recoil in relation to the element being processed.
Support large boards, in order to minimise the risk of jamming and backward recoil of the disc. Large boards tend to
bend under their own weight. Supports should be placed under the board at both sides, close to the cutting line, next to the edges
of the board.
Do not use blunt of damaged saws. Blunt or inadequately positioned teeth of the saw form a narrow saw cut which leads to
excessive friction, jamming of the saw and backward recoil.
Before cutting may commence, it is required to close fi rmly the cutting depth and the saw inclination angle clamps. If the
settings of the sawing machine change during cutting, then there is a risk of jamming and backward recoil.
Be particularly careful during deep cutting into existent walls or other spaces. A protruding saw may be cutting other
objects, causing backward recoil.
Additional safety recommendations for sawing machines
Before each use make sure the lower guard is in a correct position. Do not use the sawing machine, if the lower guard
does not move freely and close immediately. Do not ever fi x the lower guard or leave it open. If the sawing machine is
dropped accidentally, the lower guard may bend. Lift the lower guard by the handle and make sure it moves freely and does not
touch the saw or another part at any angle and cutting depth.
Check the spring of the lower guard. If the guard or the spring do not function properly, they must be repaired before
being used. The lower guard may be slow if the parts are damaged, if there are sticky residues or if waste is accumulated.
It is acceptable to manually retract the lower guard only in case of special cutting tasks, such as „deep cutting" and
„complex cutting". Lift the lower guard by the handle and once the saw enters the material, release the lower guard. In
any other case it is recommended to make sure the lower guard functions automatically.
Always make sure the lower guard covers the saws, before the sawing machine is placed on the workshop table or on
the fl oor. if the edge of the saw is unprotected, the sawing machine will retract cutting anything it contacts accidentally. Remember
the saw needs time to come to a halt, once the machine is turned off .
Additional safety instructions for sawing machines with a splitting wedge
Use an appropriate splitting edge for the given saw. The splitting edge must be thicker than the body of the saw, but thinner
than the distance between the teeth of the saw.
O R I G I N A L I N S T R U C T I O N S
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