DeWalt DW921K Manual page 29

bit back out of a drilled hole. This will
help prevent jamming.
Prior to operation:
• Make sure your battery pack is (fully) charged.
• Insert the appropriate bit.
• Mark the spot where the hole is to be drilled.
• Select forward or reverse rotation.
Switching ON and OFF (fig. A & D)
• To run the tool, press the variable speed switch
(1). The pressure exerted on the variable speed
switch determines the tool speed.
• To stop the tool, release the variable speed
switch (1).
• To lock the tool in OFF-position, move the
forward/reverse slider (2) to the central position.
The drill is equipped with a brake to stop
the chuck as soon as the variable speed
switch is fully released.
Screwdriving (fig. A)
• Select forward or reverse rotation using the slider (2).
• Set the collar (4) to position 1 and begin
screwdriving (low torque).
• If the clutch ratchets too soon, adjust the collar
to increase the torque as required.
Drilling (fig. A)
• Select the drilling mode using the collar (4).
Drilling in metal
• Use a cutting lubricant when drilling metals. The
exceptions are cast iron and brass which should
be drilled dry.
Drilling in masonry
• Use carbide-tipped masonry bits at low speeds.
Keep even force on the drill. A smooth, even flow
of dust indicates the proper drilling rate.
Drilling in wood
• Holes in wood can be made with the same twist
drills used for metal. These bits may overheat
unless pulled out frequently to clear chips from
the flutes.
• For larger holes use Power Drill wood bits.
• Use a block of wood to back up workpieces that
may splinter.
Consult your dealer for further information on the
appropriate accessories.
21
Maintenance
Your D WALT Power Tool has been designed to
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operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
Lubrication
Your Power Tool requires no additional lubrication.
Cleaning
• Unplug the charger before cleaning the housing
with a soft cloth.
• Remove the battery pack before cleaning your
Power Tool.
• Keep the ventilation slots clear and regularly
clean the housing with a soft cloth.
Rechargeable batteries and the environment
D WALT cordless tools and battery packs can be
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charged many times to give long life and repeatedly
full power.
This symbol indicates that this tool contains nickel
cadmium (NiCd) cells. When your tool or battery
pack needs replacement, think of the protection of
our environment.
D WALT recommends the following:
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• Discharge the energy from the batteries by
running the batteries down completely, then
remove them from the tool.
• NiCd cells are recyclable, so do not throw them
away with your household waste. They may end up
in an incinerator or landfill, which must be avoided.
• Instead, take the battery pack to a D
service centre, your local dealer or your local
recycling station. If necessary, contact your local
municipality for disposal information.
The collected batteries will be disposed of
properly and/or used for recycling purposes.
E N G L I S H
WALT
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