Makita DCS550 Instruction Manual page 4

The technical documentation is kept by:
Makita International Europe Ltd.
Technical Department,
Michigan Drive, Tongwell,
Milton Keynes, Bucks MK15 8JD, England
000230
Tomoyasu Kato
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi, 446-8502, JAPAN
General Power Tool Safety
Warnings
WARNING Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and instructions for
future reference.
CORDLESS METAL CUTTER
SAFETY WARNINGS
Cutting procedures
1. 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 tool, they cannot be cut by
blade.
2. Do not reach underneath the workpiece. The
guard cannot protect you from the blade below
the workpiece.
3. Adjust the cutting depth to the thickness of
the workpiece. Less than a full tooth of the blade
teeth should be visible below the workpiece.
4. Never hold piece being cut in your hands or
across your leg. Secure the workpiece to a
stable platform. It is important to support the
work properly to minimize body exposure, blade
binding, or loss of control.
5. Hold power
surfaces only, when performing an operation
where the cutting tool may contact hidden
wiring. Contact with a "live" wire will also make
exposed metal parts of the power tool "live" and
could give the operator an electric shock.
6. When ripping, always use a rip fence or
straight edge guide. This improves the accuracy
of cut and reduces the chance of blade binding.
30.1.2009
Director
tool by insulated
7. Always use blades with correct size and shape
(diamond versus round) of arbour holes. Blades
that do not match the mounting hardware of the tool
will run eccentrically, causing loss of control.
8. Never
washers or bolt. The blade washers and bolt
were specially designed for your tool, for optimum
performance and safety of operation.
Kickback causes and related warnings
− Kickback is a sudden reaction to a pinched, bound or
misaligned blade, causing an uncontrolled tool 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.
− If the blade becomes twisted or misaligned in the cut,
the teeth at the back edge of the blade can dig into the
GEA010-1
top surface of the workpiece causing the blade to climb
out of the kerf and jump back toward the operator.
Kickback is the result of tool misuse and/or incorrect
operating procedures or conditions and can be avoided
by taking proper precautions as given below.
9. Maintain a firm grip with both hands on the
tool and position 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 tool to jump backwards,
but kickback forces can be controlled by the
GEB058-3
operator, if proper precautions are taken.
10. When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the tool
motionless in the material until the blade comes to
a complete stop. Never attempt to remove the tool
from the work or pull the tool backward while the
blade is in motion or KICKBACK may occur.
Investigate and take corrective actions to eliminate the
cause of blade binding.
11. When restarting a tool in the workpiece,
center the blade in the kerf and check that
blade teeth are not engaged into the material.
If blade is binding, it may walk up or kickback
from the workpiece as the tool is restarted.
12. 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 panel on both sides, near the line of cut
and near the edge of the panel.
13. Do not use dull or damaged blades. Unsharpened
or improperly set blades produce narrow kerf causing
gripping
excessive friction, blade binding and kickback.
14. 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.
15. Use extra caution when making a "plunge cut" into
existing walls or other blind areas. The protruding
blade may cut objects that can cause kickback. For
plunge cuts, retract lower guard using retracting handle.
4
use damaged or incorrect blade