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8. Use right tool.
Don’t force small tool or attachment to do the job
of a heavy-duty tool.
Don’t use tool for purpose not intended —for
example— don’t use circular saw for cutting tree
limbs or logs.
9. NEVER use a power tool for applications other
than those specified.
NEVER use a power tool for applications other than
those specified in the Instruction Manual.
10. Handle tool correctly.
Operate the tool according to the instructions
provided herein. Do not drop or throw the tool.
NEVER allow the tool to be operated by children,
individuals unfamiliar with its operation or
unauthorized personnel.
11. Keep all screws, bolts and covers tightly in place.
Keep all screws, bolts, and plates tightly mounted.
Check their condition periodically.
12. Do not use power tools if the plastic housing or
handle is cracked.
Cracks in the tool’s housing or handle can lead to
electric shock. Such tools should not be used until
repaired.
13. Blades and accessories must be securely mounted
to the tool.
Prevent potential injuries to yourself or others.
Blades, cutting implements and accessories which
have been mounted to the tool should be secure
and tight.
14. Keep motor air vent clean.
The tool’s motor air vent must be kept clean so
that air can freely flow at all times. Check for dust
build-up frequently.
15. Operate power tools at the rated voltage.
Operate the power tool at voltages specified on its
nameplate.
If using the power tool at a higher voltage than
the rated voltage, it will result in abnormally fast
motor revolution and may damage the unit and
the motor may burn out.
16. NEVER use a tool which is defective or operating
abnormally.
If the tool appears to be operating unusually,
making strange noises, or otherwise appears
defective, stop using it immediately and arrange
for repairs by a Hitachi authorized service center.
17. NEVER leave tool running unattended. Turn power
off.
Don’t leave tool until it comes to a complete stop.
18. Carefully handle power tools.
Should a power tool be dropped or struck against
hard materials inadvertently, it may be deformed,
cracked, or damaged.
19. Do not wipe plastic parts with solvent.
Solvents such as gasoline, thinner benzine, carbon
tetrachloride, and alcohol may damage and crack
plastic parts. Do not wipe them with such solvents.
Wipe plastic parts with a soft cloth lightly
dampened with soapy water and dry thoroughly.
20. NEVER use a depressed center wheel which is
cracked or deformed or worn away (see the
MAINTENANCE AND INSPECTION section on page
13).
21. NEVER use the grinder in places where the sparks
generated by the grinder can cause explosion, such
as where flammable materials or gases are
present.
22. NEVER push in the push button while the spindle
is running.
23. ALWAYS wear eye protection that meets the
requirement of the latest revision of
ANSI Standard Z87.1.
24. ALWAYS wear a mask or respirator to protect
yourself from dust or potentially harmful particles
generated during the grinding operation.
25. ALWAYS firmly grip the body handle and side
handle while operating the grinder.
26. ALWAYS have a trial run before grinding
commence. (see Test the grinder before using on
page 12).
27. ALWAYS follow the instructions contained in this
manual when replacing the depressed center
wheel.
28. ALWAYS be careful with buried object such as an
underground wiring.
Touching these active wiring or electric cable with
this tool, you may receive an electric shock.
Confirm if there are any buried object such as
electric cable within the wall, floor or ceiling where
you are going to operate here after.
29. Definitions for symbols used on this tool
V ............... volts
Hz ............. hertz
A ............... amperes
no ............. no load speed
W .............. watt
............. Class II Construction
---/min ...... revolutions per minute
DOUBLE INSULATION FOR SAFER
OPERATION
To ensure safer operation of this power tool, HITACHI
has adopted a double insulation design. “Double
insulation” means that two physically separated
insulation systems have been used to insulate the
electrically conductive materials connected to the power
supply from the outer frame handled by the operator.
Therefore, either the symbol “ ” or the words “Double
insulation” appear on the power tool or on the nameplate.
Although this system has no external grounding, you
must still follow the normal electrical safety precautions
given in this Instruction Manual, including not using the
power tool in wet environments.
01Eng_G12VA_US 8/3/09, 17:517