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Selecting the action mode
Rotation with hammering
For drilling in concrete, masonry, etc., depress the lock but-
ton and rotate the change lever so that the pointer points to
the symbol. Use a tungsten-carbide tipped bit.
Hammering only
For chipping, scaling or demolition operations, depress the
lock button and rotate the change lever so that the pointer
points to the symbol. Use a bull point, cold chisel, scaling
chisel, etc.
CAUTION:
• Do not rotate the change lever when the tool is running
under load. The tool will be damaged.
• To avoid rapid wear on the mode change mechanism, be
sure that the change lever is always positively located in
one of the two action mode positions.
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.
CAUTION:
• As soon as the torque limiter actuates, switch off the tool
immediately. This will help prevent premature wear of the
tool.
Indicator lamp
The green power-ON indicator lamp lights up when the tool is
switched ON. If the indicator lamp is lit but the tool does not
start, the carbon brushes may be worn out, or the electric cir-
cuit or the motor may be defective. If the indicator lamp does
not light up and the tool does not start, the ON/OFF switch or
the mains cord may be defective.
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool needs
1. Change lever
2. Pointer
3. Lock button
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3
1. Pointer
2. Change lever
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1. Service indicator lamp (red)
2. Power-ON indicator lamp (green)
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2
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