17 ENGLISH
NOTE:
Eccentricity in the drill bit rotation may occur
while operating the tool with no load. The tool auto-
matically centers itself during operation. This does not
affect the drilling precision.
Chipping/Scaling/Demolition
Set the action mode changing knob to the symbol.
Hold the tool firmly with both hands. Turn the tool on
and apply slight pressure on the tool so that the tool will
not bounce around, uncontrolled.
Pressing very hard on the tool will not increase the
efficiency.
Drilling in wood or metal
CAUTION:
Hold the tool firmly and exert care
when the drill bit begins to break through the
workpiece.
There is a tremendous force exerted on
the tool/drill bit at the time of hole break through.
CAUTION:
A stuck drill bit can be removed
simply by setting the reversing switch to reverse
rotation in order to back out. However, the tool
may back out abruptly if you do not hold it firmly.
CAUTION:
Always secure workpieces in a
vise or similar hold-down device.
NOTICE:
Never use “rotation with hammering”
when the drill chuck is installed on the tool.
The
drill chuck may be damaged.
Also, the drill chuck will come off when reversing the
tool.
NOTICE:
Pressing excessively on the tool will
not speed up the drilling.
In fact, this excessive
pressure will only serve to damage the tip of your drill
bit, decrease the tool performance and shorten the
service life of the tool.
Set the action mode changing knob to the symbol.
For HR001G/HR003G
Optional accessory
Attach the chuck adapter to a keyless drill chuck to
which 1/2"-20 size screw can be installed, and then
install them to the tool. When installing it, refer to the
section “Installing or removing drill bit”.
1
2
►
1.
Keyless drill chuck
2.
Chuck adapter
For HR002G/HR004G
Use the quick change drill chuck as standard equip-
ment. When installing it, refer to "changing the quick
change chuck for SDS-plus".
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve clock
-
wise to tighten the chuck.
1
2
►
1.
Sleeve
2.
Ring
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
Diamond core drilling
NOTICE:
If performing diamond core drilling
operations using “rotation with hammering”
action, the diamond core bit may be damaged.
When performing diamond core drilling opera-
tions, always set the action mode changing knob to
the position to use "rotation only" action.
Summary of Contents for HR004GZ
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