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8
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out
any work on the tool.
Side grip (auxiliary handle)
Fig.10
CAUTION:
•
Always use the side grip to ensure operating safety.
Install the side grip so that the protrusion on the grip fit
in between the grooves in the tool barrel. Then tighten
the grip by turning clockwise at the desired position. It
may be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small
amount of bit grease (about 0.5 -1 g). This chuck
lubrication assures smooth action and longer service life.
Installing or removing the bit
Clean the bit shank and apply bit grease before
installing the bit.
Fig.11
Insert the bit into the tool. Turn the bit and push it in until
it engages.
Fig.12
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
Fig.13
Bit angle (when chipping, scaling or demolishing)
Fig.14
The bit can be secured at the desired angle. To change
the bit angle, depress the lock button and rotate the
action mode changing knob to the
O
symbol. Turn the
bit to the desired angle.
Depress the lock button and rotate the action mode
changing knob to the
symbol. Then make sure that
the bit is securely held in place by turning it slightly.
Fig.15
Depth gauge
Fig.16
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the side grip and insert the depth
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
Fig.17
Use the dust cup to prevent dust from falling over the tool and
on yourself when performing overhead drilling operations.
Attach the dust cup to the bit as shown in the figure. The size
of bits which the dust cup can be attached to is as follows.
Bit diameter
Dust cup 5
6 mm - 14.5 mm
Dust cup 9
12 mm - 16 mm
006382
OPERATION
Hammer drilling operation
Fig.18
Set the action mode changing knob to the
symbol.
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 a tremendous and sudden twisting force
exerted on the tool/bit at the time of hole break-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.
NOTE:
Eccentricity in the bit rotation may occur while operating the
tool with no load. The tool automatically centers itself during
operation. This does not affect the drilling precision.
Blow-out bulb (optional accessory)
Fig.19
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
Fig.20
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.