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5
ASSEMBLY
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Side handle
1
2
003140
Raise the side handle. The side handle can be secured
in four position (right, left, up and down). To secure the
side handle, tighten the clamp nut securely. Never
secure the side handle in other than the above four
positions.
Side grip
1
003148
The side grip is convenient for downward drilling or
chipping operations. Screw the side grip on the tool
securely. The side grip can be installed on either side of
the tool for right or left hand operation.
Installing or removing the bit
1
2
180
003152
Insert the bit into the tool holder as far as it will go. Pull
out and turn the tool retainer 180 degrees. Then release
it to secure the bit.
CAUTION:
• Never use A-type shank bits. They can cause
damage to the tool.
19
37 38.5 3727
16ø
19
AB
003155
To remove the bit, follow the installation procedure in
reverse.
OPERATION
Hammer drilling operation
003202
Set the change lever 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.
1. Tool holder
2. Tool retainer
1. Side grip
1. Clamp nut
2. Side handle