35
1
2
4
3
WARNING: NEVER use a light socket.
NEVER connect the live (L) or
neutral (N) wires to the earth
pin marked E or .
Using an Extension Cable
An extension cord should not be used unless
absolutely necessary. Use an approved extension
cable suitable for the power input of your charger
(see technical data). The minimum conductor size
is 1 mm
2
; the maximum length is 30 m.
When using a cable reel, always unwind the cable
completely.
Auto-spindle Lock
The auto-spindle lock is engaged when the
transmission is stationary. The chuck sleeve can easily
be turned with one hand while the other supports the
unit.
Assembly and Adjustment
WARNING: Prior to assembly and
adjustment, always remove the battery
pack. Always switch off the tool before
inserting or removing the battery pack.
WARNING: Use only DEWALT battery
packs and chargers.
Inserting and Removing Bits (fig. A & C)
• Open the chuck by turning the sleeve (15)
counterclockwise and insert the bit shank.
• Place the bit in the chuck as far as it will go and lift
slightly before tightening.
• Tighten firmly by turning the sleeve clockwise.
• To remove the bit, proceed in reverse order.
Selecting the Operating Mode or Adjusting the
Torque (fig. D)
The collar of this tool has a wide range of positions
for the adjustment of the torque to suit the size of
the screw and the workpiece material. For torque
adjustment, refer to the section "Screwdriving".
• Select the drilling mode or torque by aligning
the symbol or number on the collar (5) with the
indicator (16) on the housing.
DC981/DC984/DC988
The percussion drills can be used in the following
operating modes:
Rotary drilling:
for steel, wood and plastics
Percussion drilling:
for masonry
Forward/reverse Slider (fig. E)
• To select forward or reverse rotation, use the
forward/reverse slider (2) as shown (see arrows on
tool).
WARNING: Always wait until the motor
has come to a complete standstill before
changing the direction of rotation.
Three-gear Selector (fig. F)
Your tool is fitted with a three-gear selector (6) to vary
the speed/torque ratio.
1 low speed/high torque
2 medium speed/medium torque
3 high speed/low torque
For speed rates, refer to the technical data.
WARNING: Do not change gears at full
speed or during use.
Instructions for Use
WARNING:
• Always observe the safety instructions
and applicable regulations.
• Be aware of the location of pipework and
wiring.
• Apply only a gentle pressure to the tool.
ENGLISH
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