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○ Rotation recovery control function
When the motor is stopped due to overloading, if the
cause is eliminated, the motor automatically resumes
operation.
During grinding, if the motor stops due to pressing too
forcefully with the grinder, gently lift the tool body to start
rotation again.
When the motor is stopped for a certain period of time,
it does not recover, for the protection of the unit and for
safety.
Turn it off once and on again to start it.
○ Overheat protection
This protection feature cuts off the power to the motor
and stops the power tool in the event of overheating of
motor during operation.
When the overheat protection feature has been
activated, the motor may stop.
In this case, release the tool switch and cool it down in a
few minutes.
After that you can use it again.
NOTE
○ To prevent the tip tool from falling off , the brake will not
be applied when the switch is released right after startup
(within one second).
○ Due to HiKOKI's continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action
Attaching and removing the guard
clip*
1
Fitting and adjusting the wheel guard*
Fixing the side handle
Assembling depressed center wheel*
Assembling cutting wheel and diamond
wheel*
*
3
4
Switch operation*
5
Grinding angle and grinding method*
Adjusting the number of the revolution*
Cutting work*
8
Selecting accessories
*1 Attaching and removing the guard clip
Pull on the tabs while removing the guard clip.
When attaching the guard clip, ensure that its tabs
(2 locations) are hooked on the rim of the wheel guard.
*2 Fitting and adjusting the wheel guard
The wheel guard can be adjusted to an optimal angle for
the work.
Fix the wheel guard in place where its hole is aligned with
the bump of the lever before use.
*3 Sold separately
*4 WARNING
Before use, be sure to tighten the wheel nut with the
included wrench.
Failure to tighten could result in the wheel nut
loosening when the brake is activated during a stop.
NOTE
The wheel washer is specifi cally for this product. Do
not use it for any other product.
*5 When the 0 voltage re-start protection feature has been
activated, return the power switch to the OFF position
and wait for 1 second or more before restarting the
power tool.
Figure
Page
3
2
4
2
2
5
3
*
6
3
3
4
7
3
8
3
9
3
6
10
4
7
11
4
—
177
10
*6 Grinding angle and grinding method
Press down the machine evenly on the surface and
move back and forth so that the surface of the workpiece
does not become too hot.
Rough grinding: position the machine at an angle of
15°–30° for the best working results.
When the grinding stone is new, its corner may dig in
when it is pushed forward, so pull back as shown in "a"
during use.
Once the wheel edge is worn, the workpiece can be
ground in both directions.
*7 Adjusting the number of revolution
This model is equipped with an electronic infi nite-
variable-speed drive and can change the number of
revolution according to a use.
If you turn and set the dial scale to 6, the number of
revolution increases, and if you turn and set it to 1, the
number of revolution decreases.
Before use, set the number of revolution using the dial. In
so doing, refer to the following table as a rough guide.
Dial
Use
1
Polishing, fi nishing
2
Removal of paint
or coat
3
Removal of rust
4
Removal of burrs
5
Grinding
6
Rough grinding
Cutting
NOTE
Use caution not to turn the dial scale to any value below
1 or above 6.
*8 Cutting work
Always work against the run of the disc. Otherwise there
is the danger of the machine kicking back from the cut
out of control. Guide the machine evenly at a speed
suitable for the material being processed. Do not tilt,
apply excessive force or sway from side to side.
MAINTENANCE AND INSPECTION
WARNING
○ Be sure to switch power OFF and disconnect the plug
from the receptacle during maintenance and inspection.
○ Using cracked, deformed or damaged wheels can lead
to wheel breakage and resulting serious injury.
1. Inspecting the depressed center wheel
Ensure that the depressed center wheel is free of cracks
and surface defects.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Replacing supply cord
If the replacement of the supply cord is necessary, it
has to be done by HiKOKI Authorized Service Center to
avoid a safety hazard.
Tools
Radial grinding disc
Sanding disc
Depressed center wheel
Depressed center wheel
Diamond wheel
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