DeWalt DCH274 User Manual

14
English
ROTARY DRILLING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Depending on your tool, follow either of the
following instructions:
– Fit a chuck adaptor/chuck assembly
(DCH273). Special SDS Plus
®
adaptors with
threaded sections are available for use with
standard 10 or 13 mm chucks to enable
straight shank bits to beused.
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH274).
3. Proceed as described for rotaryhammering.
WARNING: Never use standard chucks
in the rotary hammeringmode.
SCREWDRIVING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
drilling"position.
2. Select the direction ofrotation.
3. Depending on your tool, follow either of the
following instructions:
– Insert the special SDS Plus
®
screwdriving
adaptor for use with hexagonal screwdriver
bits (DCH273).
– Replace the SDS Plus
®
tool holder with the
keyless chuck (DCH274).
4. Insert the appropriate screwdriver bit. When
driving slotted head screws always use bits with
a findersleeve.
5. Gently press the variable speed switch(a) to
prevent damage to the screw head. In reverse
(LH) rotation the tool speed is automatically
reduced for easy screwremoval.
6. When the screw is flush with the workpiece,
release the variable speed switch to prevent
the screw head from penetrating into
theworkpiece.
CHIPPING (FIG.1)
1. Set the mode selector switch(c) to the
"hammering only"position.
2. Insert the appropriate chisel and check if it is
properlylocked.
3 Adjust the side handle(e) asrequired.
4. Switch on the tool and startworking.
It may be necessary to briefly run the motor after
having changed from chiselling to rotary modes in
order to align thegears.
WARNING:
  •Applyonlyagentlepressureto
the tool (approx. 5 kg). Excessive
force does not speed up drilling but
decreases tool performance and may
shorten toollife.
  •Donotdrillordrivetoodeepto
prevent damage to the dust cover(o).
  •Alwaysholdthetoolfirmlywithboth
hands and ensure a secure stance.
Always operate the tool with the side
handle properlymounted.
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.
Proper Hand Position (fig.1, 6)
WARNING: To reduce the risk of
serious personal injury, ALWAYS
use proper hand position as shown
in figure6.
WARNING: To reduce the risk of
serious personal injury, ALWAYS
hold securely in anticipation of a
suddenreaction.
Proper hand position requires one hand on the
main handle(h), with the other hand on the side
handle(e).
Drill Operation (fig.1)
WARNING: To reduce the risk of
serious personal injury, turn tool off
and disconnect tool from power
source before making any adjustments
or removing/installing attachments
oraccessories.
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.
HAMMERDRILLING (FIG.1)
1. Set the mode selector switch(c) to the "rotary
hammering"position.
2. Insert the appropriate drill bit. For best results
use high quality carbide-tippedbits.
3. Adjust the side handle(e) asrequired.
4. Mark the spot where the hole is to bedrilled.
5. Place the drill bit on the spot and switch on
thetool.

DeWalt DCH274 Specifications

General

Brand	DeWalt
Model	DCH274
Category	Cutter
Language	English