DeWalt DCD716 Original Instructions Manual page 35

To release the accessory, repeat step 2 above.

WARNING: Do not attempt to tighten drill bits (or any
other accessory) by gripping the front part of the chuck
and turning the tool on. Damage to the chuck and
personal injury may result. Always lock off trigger switch
when changing acces sories.
Be sure to tighten chuck with one hand on the chuck sleeve and
one hand holding the tool for maximum tightness.
Chuck Removal (Fig. E)
Turn the adjustment collar to the "drill" position and gear shifter
to position 1 (low speed). Tighten the chuck around the shorter
end of a hex key (not supplied) of 6.35 mm or greater size. Using
a wooden mallet or similar object, strike the longer end in the
clockwise direction, as shown. This will loosen the screw inside
the chuck.
Open chuck jaws fully, insert screwdriver (or Torx tool if
required) into front of chuck between jaws to engage screw
head. Remove screw by turning clockwise (left-hand-thread).
Place hex key in chuck and tighten, as shown in Figure E. Using
a wooden mallet or similar object, strike key sharply in the
counterclockwise direction. This will loosen the chuck so that it
can be unscrewed by hand.
Chuck Installation (Fig. F)
Screw the chuck on by hand as far as it will go and insert screw
(left-hand thread). Tighten screw securely. Tighten the chuck
around the shorter end of a 6.35 mm or larger hex key (not
supplied) strike the longer end in the clockwise direction with
a wooden mallet, as shown. Tighten the screw once again by
turning in a counterclockwise direction.
Drill Operation

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can cause injury.

WARNING: To reduce the risk of personal injury,
ALWAYS ensure workpiece is anchored or clamped firmly.
If drilling thin material, use a wood "back-up" block to
prevent damage to the material.
Turn the collar to the drill bit symbol for drilling. Select the
desired speed/torque range using the gear shifter to match the
speed and torque to the planned operation.
1. Use sharp drill bits only. For WOOD, use twist drill bits, spade
bits, or hole saws. For METAL, use high-speed steel (HHS)
twist drill bits or hole saws.
2. Always apply pressure in a straight line with the bit. Use
enough pressure to keep drill biting, but do not push hard
enough to stall the motor or deflect the bit.
3. Hold tool firmly with both hands to control the twisting
action of the drill.

WARNING: The drill may stall if overloaded causing a
sudden twist. Always expect the stall. Grip the drill firmly
with both hands to control the twisting action and
avoid injury.
4. IF DRILL sTaLLs, it is usually because it is being overloaded
or improperly used. RELEasE TRIGGER IMMEDIaTELY,
remove drill bit from work, and determine cause of stalling.
DO nOT cLIck TRIGGER On anD OFF In an aTTEMPT
TO sTaRT a sTaLLED DRILL — ThIs can DaMaGE
ThE DRILL.
5. To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the last
fractional part of the hole.
6. Keep the motor running when pulling the bit back out of a
drilled hole. This will help prevent jamming.
7. With variable speed drills there is no need to center punch
the point to be drilled. Use a slow speed to start the hole
and accelerate by squeezing the trigger harder when the
hole is deep enough to drill without the bit skipping out.
Screwdriver Operation
Select the desired speed/torque range using the dual range
gear shifter on the top of tool to match the speed and torque to
the planned operation.
Insert the desired fastener accessory into the chuck as you
would any drill bit. Make a few practice runs in scrap or unseen
areas to determine the proper position of the clutch collar.
MAXIMUM RECOMMENDED CAPACITIES
Low Range–1
Bits, Metal Drilling 6.35 mm
Wood, Flat Boring 19.05 mm
Hole Saws 19.05 mm
Hammerdrill Operation (Fig. A)
1. Select the desired speed/torque range using the gear shifter
to match the speed and torque to the planned operation.
Set the torque adjustment collar
2. Select the high speed setting by sliding the gear shifter
back (away form the chuck).
3. Drill straight, keeping the bit at a right angle to the work. Do
not exert side pressure on the bit when drilling as this will
cause clogging of the bit flutes and a slower drilling speed.
4. When drilling deep holes, if the hammer speed starts to
drop off, pull the bit partially out of the hole with the tool
still running to help clear debris from the hole.
5. For masonry, use carbide-tipped bits or masonry bits. A
smooth, even flow of dust indicates the proper drilling rate.
MAINTENANCE
Your D WALT power tool has been designed to operate
e
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regular cleaning.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can cause injury.
EnGLIsh
High Range–2
3.18 mm
12.7 mm
15.88 mm
3 to the hammer symbol.
4
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