Scheppach HS254 Originalbetriebsanleitung Seite 38

f) For the riving knife to work, it must be in the
sawing gap. The riving knife is ineffective when
cutting workpieces that are too short to be engaged
with the riving knife. Under these conditions a kick-
back cannot be prevented by the riving knife.
g) Use the appropriate saw blade for the riving
knife. For the riving knife to function properly, the
saw blade diameter must match the appropriate
riving knife and the body of the saw blade must be
thinner than the thickness of the riving knife and the
cutting width of the saw blade must be wider than
the thickness of the riving knife.
Cutting procedures warnings
a) m DANGER: Never place your fingers or hands
in the vicinity of the saw blade or in the sawing
area. A moment of inattention or a slip could direct
your hand towards the saw blade and result in seri-
ous personal injury.
b) Feed the workpiece into the saw blade or cutter
only against the direction of rotation. Feeding the
workpiece in the same direction that the saw blade is
rotating above the table may result in the workpiece,
and your hand, being pulled into the saw blade.
c) Never use the mitre gauge to feed the workpiece
when ripping and do not use the rip fence as a
length stop when cross cutting with the mitre
gauge. Guiding the workpiece with the rip fence
and the mitre gauge at the same time increases the
likelihood of saw blade binding and kickback.
d) When making longitudinal cuts, always keep the
workpiece in full contact with the stop rail and
always apply the feed force to the workpiece
between the stop rail and the saw blade. Use a
push stick when the distance between the fence
and the saw blade is less than 150 mm, and use
a push block when this distance is less than 50
mm. "Work helping" devices will keep your hand at
a safe distance from the saw blade.
e) Use only the push stick provided by the manu-
facturer or constructed in accordance with the
instructions. This push stick provides sufficient
distance of the hand from the saw blade.
f) Never use a damaged or cut push stick. A dam-
aged or cut push stick may break causing your hand
to slip into the saw blade.
38 | GB
g) Do not perform any operation "freehand". Always
use either the rip fence or the mitre gauge to po-
sition and guide the workpiece. "Freehand" means
using your hands to support or guide the workpiece, in
lieu of a parallel stop or mitre gauge. Freehand sawing
leads to misalignment, binding and kickback.
h) Never reach around or over a rotating saw
blade. Reaching for a workpiece may lead to acci-
dental contact with the moving saw blade.
i) Provide auxiliary workpiece support to the rear
and/or sides of the saw table for long and/or
wide workpieces to keep them level. A long and/
or wide workpiece has a tendency to pivot on the
table's edge, causing loss of control, saw blade
binding and kickback.
j) Feed workpiece at an even pace. Do not bend,
twist or move the workpiece sideways. If jamming
occurs, turn the tool off immediately, unplug the
tool then clear the jam. Jamming the saw blade by
the workpiece can cause kickback or stall the motor.
k) Do not remove pieces of cut-off material while
the saw is running. The material may become
trapped between the fence or inside the saw blade
guard and the saw blade pulling your fingers into
the saw blade. Turn the saw off and wait until the
saw blade stops before removing material.
l) Use an auxiliary fence in contact with the table
top when ripping workpieces less than 2 mm
thick. A thin workpiece may wedge under the rip
fence and create a kickback.
Kickback − causes and related warnings
Kickback is a sudden reaction of the workpiece due to a
pinched, jammed saw blade or misaligned line of cut in
the workpiece with respect to the saw blade or when a
part of the workpiece binds between the saw blade and
the rip fence or other fixed object.
Most frequently during kickback, the workpiece is lifted
from the table by the rear portion of the saw blade and
is propelled towards the operator. Kickback is the result
of saw misuse and/or incorrect operating procedures or
conditions. And can be avoided by taking proper precau-
tions as given below.
a) Never stand directly in line with the saw blade.
Always position your body on the same side of
the saw blade as the fence. Kickback may pro-
pel the workpiece at high velocity towards anyone
standing in front and in line with the saw blade.
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