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Drilling in metal
To prevent the bit from slipping when starting a hole, make
an indentation with a center-punch and hammer at the point
to be drilled. Place the point of the bit in the indentation and
start drilling.
Use a cutting lubricant when drilling metals. The exceptions
are iron and brass which should be drilled dry.
CAUTION:
• Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve to
damage the tip of your bit, decrease the tool
performance and shorten the service life of the tool.
• There is a tremendous force exerted on the tool/bit at the
time of hole break through. Hold the tool firmly and exert
care when the bit begins to break through the workpiece.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back out.
However, the tool may back out abruptly if you do not
hold it firmly.
• Always secure small workpieces in a vise or similar hold-
down device.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
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 tool is
excessively loaded. Continued operation under such a condi-
tion will result in a failure or breakage of the tool.
At this time, cool down the tool by running the tool under no
load.
1. Power-ON indicator lamp (green)
2. Service indicator lamp (red )
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