
5
EN
cause the depth gauge to hit the machine.
1.Auxiliary Handle
Base
2.Depth Gauge
3.Auxiliary Handle
1
2
3
●
Impact Drilling
Always use auxiliary handle when operating the
tool and hold the tool firmly with the help of auxiliary
handle and switch trigger at the same time.
When drilling in granite or similar materials, turn the
change knob fully to the symbol ( ) and the drill
rotates as an impact drill.
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.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool
at an idle, and 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.
●
Drill Operation
When drilling in wood, metal or plastic material, turn
the change knob fully to the symbol ( ) and the drill
rotates as an ordinary electric drill
.
When drilling in
wood, the best results are obtained with wood drills
equipped with a guide screw. The guide screw makes
drilling easier by pulling the bit into the workpiece.
When 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:
1.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.
2.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.
3.Always secure small workpieces in a vise or
similar hold-down device
MAINTENANCE AND CARE
CAUTION:
Always be sure that the tool is switched off
and unplugged before attempting to perform
inspection or maintenance.
If the drill bit is worn, it should be replaced or re-
sharpened immediately. Failure to do so can overload
the motor and reduce drilling efficiency.
Should always check whether mounting screw
fastening safely to avoid an accident.
●
Replace the Carbon Brushes
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark.
Keep the carbon brushes clean and free to slip in the
holders. Both carbon brushes should be replaced at
the same time.
Remove the handle cover by loosening the screws on
it with a screwdriver, then remove the worn out carbon
brushes and replace new ones. Reinstall the handle
cover by tightening the screws at last.
1.Limited Mark
1
※
If the replacement of the supply cord is necessary,
this has to be done by the manufacturer or his agent
in order to avoid a safety hazard.
Summary of Contents for GD1320
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