Safety Warnings For Circular Saws - Bosch GKT 55 GCE Professional Manual Original

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14 | English
If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
 Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to bind
and are easier to control.
 Use the power tool, accessories and tool bits etc. in ac-
cordance with these instructions, taking into account
the working conditions and the work to be performed.
Use of the power tool for operations different from those
intended could result in a hazardous situation.
Service
 Have your power tool serviced by a qualified repair per-
son using only identical replacement parts. This will en-
sure that the safety of the power tool is maintained.

Safety Warnings for Circular Saws

Cutting procedures
 DANGER: Keep hands away from cutting area and the
blade. Keep your second hand on auxiliary handle, or
motor housing. If both hands are holding the saw, they
cannot be cut by the blade.
 Do not reach underneath the workpiece. The guard can-
not protect you from the blade below the workpiece.
 Adjust the cutting depth to the thickness of the work-
piece. Less than a full tooth of the blade teeth should be
visible below the workpiece.
 Never hold piece being cut in your hands or across your
leg. Secure the workpiece to a stable platform. It is im-
portant to support the work properly to minimize body ex-
posure, blade binding, or loss of control.
 Hold the power tool by insulated gripping surfaces on-
ly, when performing an operation where the cutting
tool may contact hidden wiring or its own cord. Contact
with a "live" wire will also make exposed metal parts of the
power tool "live" and could give the operator an electric
shock.
 When ripping, always use a rip fence or straight edge
guide. This improves the accuracy of cut and reduces the
chance of blade binding.
 Always use blades with correct size and shape (dia-
mond versus round) of arbour holes. Blades that do not
match the mounting hardware of the saw will run eccentri-
cally, causing loss of control.
 Never use damaged or incorrect blade washers or bolt.
The blade washers and bolt were specially designed for
your saw, for optimum performance and safety of opera-
tion.
 Kickback causes and related warnings
– Kickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to lift
up and out of the workpiece 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 unit rapidly back toward the operator;
1 609 92A 2B0 | (9.3.16)
– 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 causing the blade to climb out of the
kerf and jump back toward the operator.
Kickback is the result of saw misuse and/or incorrect oper-
ating procedures or conditions and can be avoided by tak-
ing proper precautions as given below.
 Maintain a firm grip with both hands on the saw and po-
sition your arms to resist kickback forces. Position
your body to either side of the blade, but not in line with
the blade. Kickback could cause the saw to jump back-
wards, but kickback forces can be controlled by the opera-
tor, if proper precautions are taken.
 When blade is binding, or when interrupting a cut for
any reason, release the trigger and hold the saw mo-
tionless in the material until the blade comes to a com-
plete stop. Never attempt to remove the saw from the
work or pull the saw backward while the blade is in mo-
tion or kickback may occur. Investigate and take correc-
tive actions to eliminate the cause of blade binding.
 When restarting a saw in the workpiece, centre the saw
blade in the kerf and check that saw teeth are not en-
gaged into the material. If saw blade is binding, it may
walk up or kickback from the workpiece as the saw is re-
started.
 Support large panels to minimise the risk of blade
pinching and kickback. Large panels tend to sag under
their own weight. Supports must be placed under the pan-
el on both sides, near the line of cut and near the edge of
the panel.
 Do not use dull or damaged blades. Unsharpened or im-
properly set blades produce narrow kerf causing excessive
friction, blade binding and kickback.
 Blade depth and bevel adjusting locking levers must be
tight and secure before making cut. If blade adjustment
shifts while cutting, it may cause binding and kickback.
 Use extra caution when sawing into existing walls or
other blind areas. The protruding blade may cut objects
that can cause kickback.
Guard function
 Check guard for proper closing before each use. Do not
operate the saw if guard does not move freely and en-
close the blade instantly. Never clamp or tie the guard
so that the blade is exposed. If saw is accidentally
dropped, guard may be bent. Check to make sure that
guard moves freely and does not touch the blade or any
other part, in all angles and depths of cut.
 Check the operation and condition of the guard return
spring. If the guard and the spring are not operating
properly, they must be serviced before use. Guard may
operate sluggishly due to damaged parts, gummy depos-
its, or a build-up of debris.
 Assure that the base plate of the saw will not shift while
performing the "plunge cut" when the blade bevel set-
ting is not at 90°. Blade shifting sideways will cause bind-
ing and likely kick back.
Bosch Power Tools