12
ENGLISH
Active Vibration Control
For best vibration control, hold the tool as described in Proper
HandPosition.
The active vibration control neutralises rebound vibration from
the hammer mechanism. Lowering hand and arm vibration,
it allows more comfortable use for longer periods of time and
extends the life of theunit.
The hammer only needs enough pressure to engage the active
vibraton control. Applying too much pressure will not make
the tool drill or chip faster and active vibration control will
notengage.
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments / accessories or when making
repairs. An accidental start-up can causeinjury.
WARNING: Use only
battery packs andchargers.
Inserting and Removing the Battery Pack
from the Tool (Fig. B)
NOTE: Make sure your battery pack
6
is fullycharged.
To Install the Battery Pack into the
Tool Handle
1. Align the battery pack
6
with the rails inside the tool’s
handle (Fig.B).
2. Slide it into the handle until the battery pack is firmly seated
in the tool and ensure that you hear the lock snap intoplace.
To Remove the Battery Pack from the Tool
1. Press the release button
7
and firmly pull the battery pack
out of the toolhandle.
2. Insert batter)y pack into the charger as described in the
charger section of thismanual.
Fuel Gauge Battery Packs
Some
battery packs include a fuel gauge which
consists of three green LED lights that indicate the level of
charge remaining in the batterypack.
To actuate the fuel gauge, press and hold the fuel gauge
button
14
. A combination of the three green LED lights will
illuminate designating the level of charge left. When the level
of charge in the battery is below the usable limit, the fuel gauge
will not illuminate and the battery will need to berecharged.
NOTE: The fuel gauge is only an indication of the charge left on
the battery pack. It does not indicate tool functionality and is
subject to variation based on product components, temperature
and end-userapplication.
Side Handle (Fig. A)
WARNING: To reduce the risk of personal injury, ALWAYS
operate the tool with the side handle properly installed.
Failure to do so may result in the side handle slipping
during tool operation and subsequent loss of control. Hold
tool with both hands to maximizecontrol.
The side handle
5
clamps to the front of the gear case and
may be rotated 360˚ to permit right- or left-hand use. The side
handle must be tightened sufficiently to resist the twisting
action of the tool if the accessory binds or stalls. Be sure to grip
the side handle at the far end to control the tool during astall.
To loosen side handle, rotatecounterclockwise.
To Adjust the Depth Rod (Fig. C)
1. Push in and hold the depth rod release button
12
on the
sidehandle.
2. Move the depth rod
11
so the distance between the
end of the rod and the end of the bit equals the desired
drillingdepth.
3. Release the button to lock rod into position. When drilling
with the depth rod, stop when end of rod reaches surface
ofmaterial.
Utility Hook (Fig. A, D)
DCH273, DCH274, DCH283
A utility hook
14
is fitted below the main handle
8
on the left
side of the tool. To extend the utility hook pull it out from the
side of the tool. To store the utility hook push it back flush with
the side of thetool. If use of the hook is not desired at all, it can
be removedcompletely.
To Remove and/or Reinstall the
Utility Hook
1. Position the utility hook into the extended position and
remove the hex head screw located on the underside of the
mainhandle.
2. Pull out the utility hook until it is free from theunit.
3. To reinstall, insert the utility hook into the the slot below the
main handle. NOTE: On the DCH273 and DCH274 models
the hook can be installed on either side of the handle. The
slot may be covered with a sticker. Either remove the sticker
or pierce the sticker to expose the slotunderneath.
4. Re-insert the hex screw and tightensecurely.
Bit and Bit Holder
WARNING: Burn Hazard. ALWAYS wear gloves when
changing bits. Accessible metal parts on the tool and bits
may get extremely hot during operation. Small bits of
broken material may damage barehands.
The hammerdrill can be fitted with different bits depending on
the desired application. Use sharp drill bitsonly.
Bit Reccomendations
• For wood, use twist bits, spade bits, power auger bits or
holesaws.
• For metal, use high-speed steel twist drill bits or holesaws.
Use a cutting lubricant when drilling metals. The exceptions
are cast iron and brass which should be drilleddry.
• For masonry, such as brick, cement, cinder block, etc., use
carbide-tipped bits rated for percussiondrilling.
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