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gauge into the hole in the side grip. Adjust the depth
gauge to the desired depth and tighten the side grip.
NOTE:
•
The depth gauge cannot be used at the position
where the depth gauge strikes against the gear
housing.
Dust cup
Use the dust cup to prevent dust from falling over the tool
and on yourself when performing overhead drilling opera-
tions. Attach the dust cup to the bit as shown in the fig-
ure. The size of bits which the dust cup can be attached
to is as follows.
Dust cup 5
Dust cup 9
OPERATION
Hammer drilling operation
Set the action mode changing knob to the
Position the bit at the desired location for the hole, then
pull the switch trigger.
Do not force the tool. Light pressure gives best results.
Keep the tool in position and prevent it from slipping away
from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at an
idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
CAUTION:
•
There is tremendous and sudden twisting force
exerted on the tool/bit at the time of hole break-
001300
1. Dust cup
1
Bit diameter
6 mm (1/4") - 14.5 mm (9/16")
12 mm (15/32") - 16 mm (5/8")
003866
symbol.
through, when the hole becomes clogged with
chips and particles, or when striking reinforcing
rods embedded in the concrete. Always use the
side grip (auxiliary handle) and firmly hold the tool
by both side grip and switch handle during
operations. Failure to do so may result in the loss of
control of the tool and potentially severe injury.
Blow-out bulb (optional accessory)
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
For Model HR2455 only
006382
Set the action mode changing knob to the
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
1
Use the optional drill chuck assembly. When installing it,
refer to "Installing or removing the bit" described on the
previous page.
7
002449
1. Blow-out bulb
1
003867
symbol.
001303
1. Drill chuck
assembly
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