Bosch GKS 190 PROFESSIONAL Operating Instructions Manual page 8
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Also See for GKS 190 PROFESSIONAL:
- Original instructions manual (319 pages) ,
- Operating instructions manual (39 pages) ,
- Original instructions manual (13 pages)
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1 609 929 H62.book Seite 3 Freitag, 20. Januar 2006 8:31 08
Adjust the depth of cut to the thickness of
the work. Less than a full tooth of the blade
teeth should be visible below the work.
Never hold the piece being cut in your
hands or across your leg. Secure the work
on a stable support. It is important to support
the work properly to minimize body exposure,
blade binding, or loss of control.
Hold the power tool only by the insulated
gripping surfaces when performing an op-
eration where the cutting tool may contact
hidden wiring or its own power cord. Con-
tact with a "live" wire will also make exposed
metal parts of the power tool "live" and shock
the operator.
When ripping always use a rip fence or
straight edge guide. This improves the accu-
racy of cut and reduces the chance of blade
binding.
Always use saw blades with correct size
and shape (diamond versus round) of arbor
holes. Blades that do not match the mounting
hardware of the saw will run eccentrically,
causing loss of control.
Never use damaged or incorrect blade
washers or bolts. The blade washers and
bolts were specially designed for your saw, for
optimum performance and safety of operation.
Causes and operator prevention of kick-
back:
– Kickback is a sudden reaction to a pinched,
bound or misaligned saw blade, causing an
uncontrolled saw to lift up and out of the work
toward the operator.
– When the blade is pinched or bound tightly
by the kerf closing down, the blade stalls and
the motor reaction drives the tool rapidly back
toward the operator.
– 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 wood caus-
ing the blade to climb out of the kerf and jump
back toward the operator.
Kickback is the result of saw misuse and /or in-
correct operating procedures or conditions and
can be avoided by taking proper precautions
as given below.
Maintain a firm grip with both hands on the
saw and position your arms to resist kick-
back forces. Always position yourself to
the side of the saw blade, so that your body
is never in line with the saw blade. Kickback
can cause the saw to jump backwards, but
kickback forces can be controlled by the oper-
ator if proper precautions are taken.
8 • 1 609 929 H62 • 06.01
In case the saw blade jams or if the sawing
is discontinued, switch the saw off and
hold it motionless in the material until the
blade comes to a complete stop. Never at-
tempt to remove the saw from the work or
pull the saw backward while the blade is in
motion or kickback may occur. Investigate
and take corrective action to eliminate the
cause of the blade binding.
When restarting a saw in the work, center
the saw blade in the kerf and check that the
saw teeth are not engaged into the mate-
rial. If the saw blade is binding, it may travel up
from the work or kick back as the saw is re-
started.
Support large panels to reduce 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.
Do not use dull or damaged saw blades.
Unsharpened or improperly set blades pro-
duce narrow kerf causing excessive friction,
blade binding and kickback.
Before sawing, tighten the blade depth and
cutting angle adjustments. If the adjust-
ments change during cutting, the saw blade
can jam and kickback can occur.
Use extra caution when making "plunge
cuts" into existing walls or other blind ar-
eas. The protruding saw blade, when running
into hidden objects, can be jammed and cause
kickback.
Check the lower guard for proper closing
before each use. Do not operate the saw if
the lower guard does not move freely and
close instantly. Never clamp or tie the
lower guard into the open position. If the
saw is accidentally dropped, the lower guard
may be bent. Raise the lower guard with the
retracting handle and make sure it moves
freely and does not touch the blade or any
other part, in all angles and depths of cut.
Check the operation of the lower guard
spring. If the guard and the spring are not
operating properly, they must be serviced
before use. The lower guard may operate
sluggishly due to damaged parts, gummy de-
posits or a build-up of debris.
English - 3
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