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Torque limiter
The torque limiter will actuate when a certain torque level is reached. The motor
will
disengage from the output shaft. When this happens, the
bit
will stop turning.
CAUTIO
N
:
As soon as the torque limiter actuates, switch off the tool immediately. This will help
prevent premature wear of the tool.
Hole saws, core bits, diamond core bits, etc. cannot be used with this tool. They tend
to pinch or catch easily
in
the hole. This will cause the torque limiter to actuate too
frequently.
Hammer drilling operation
Position the bit at the desired location for the hole, then pull the 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.
CAUTIO
N:
There is a tremendous and sudden twisting force exerted on the tool/bit at the time of hole
breakthrough, 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.
Bit
grease
Coat the bit shank head beforehand with a small amount (about
0.5
-
1
g;
0.02
-
0.04
oz.)
of bit grease. This chuck lubrication assures smooth action and longer service life.
Using the cold chisel
or
bull point
When using optional cold chisel or bull point, proceed as follows.
1.
Unplug the tool.
2.
Remove the side grip from the tool.
3.
Set the action mode changing knob to "rotation with hammering".
4.
Install the chisel on the tool. Refer to "installing or removing the drill
bit"
described on
5.
Install the chisel adapter (optional accessory) on the tool
so
that the chisel is inserted
the previous page.
through the chisel adapter.
I
1
I
Chisel adapter Chisel
I
\
Clamp
screw
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12