DeWalt DCD778M1 User manual

DCD777
DCD778

Copyright DeWALT
Fig. A
Fig. B
DCD777
1
2
5
8
7
9
3
6
7
8
13
10
11
11
12
4
14

Fig. D
Fig. C
DCD778
Fig. G
9
15
Fig. E Fig. F
Fig. H Fig. I
33
6
7

44
ENGLISH
EC-Declaration of Conformity
Machinery Directive
Cordless Compact Drill/Driver
DCD777
Cordless Compact Drill/Driver/Impact Drill
DCD778
DeWALT declares that these products described under
Technical Data are in compliance with:
2006/42/EC, EN62841-1:2015+A11:2022, EN62841-2-
1:2018+A11:2019+A1:2022+A12:2022.
These products also comply with Directive 2014/30/EU and
2011/65/EU. For more information, please contact DeWALT at
the following address or refer to the back of themanual.
The undersigned is responsible for compilation of the technical
file and makes this declaration on behalf ofDeWALT.
Markus Rompel
Vice President of Engineering, PTE-Europe
DeWALT, Richard-Klinger-Straße 11,
65510, Idstein, Germany
10.09.2021
DECLARATION OF CONFORMITY
THE SUPPLY OF MACHINERY SAFETY REGULATIONS
2008
CORDLESS COMPACT DRILL/DRIVER
DCD777
CORDLESS COMPACT DRILL/DRIVER/IMPACT DRILL
DCD778
DeWALT declares that these products described under
Technical Data are in compliancewith:
The Supply of Machinery (Safety) Regulations, 2008, S.I.
2008/1597 (as amended),
EN62841-1:2015+A11:2022, EN62841-2-1:2018+A11:2019+A1:
2022+A12:2022.
These products conform to the following UK Regulations:
An estimation of the level of exposure to vibration and/or
noise should also take into account the times when the tool is
switched off or when it is running but not actually doing the job.
This may significantly reduce the exposure level over the total
workingperiod.
Identify additional safety measures to protect the operator from
the effects of vibration and/or noise such as: maintain the tool
and the accessories, keep the hands warm (relevant for vibration),
organisation of workpatterns.
The vibration and/or noise emission level given in this information
sheet has been measured in accordance with a standardised test
given in EN62841 and may be used to compare one tool with
another. It may be used for a preliminary assessment ofexposure.
WARNING: The declared vibration and/or noise emission
level represents the main applications of the tool. However if the
tool is used for different applications, with different accessories or
poorly maintained, the vibration and/or noise emission may differ.
This may significantly increase the exposure level over the total
workingperiod.
DCD777 DCD778
Voltage VDC 18 18
Type 2 2
Battery type Li-Ion Li-Ion
No-load speed
1st gear
2nd gear
min-1
min-1
0–500
0–1750
0–500
0–1750
Impact rate
1st gear
2nd gear
min-1
min-1
–
–
0–8500
0–29750
Max. Torque (hard/soft) Nm 65/26 65/26
Chuck capacity mm 1.5–13 1.5–13
Maximumdrillingcapacity
Wood
Metal
Masonry
mm
mm
mm
30
13
–
30
13
13
Weight (without battery pack) kg 1.15 1.2
Noise values and/or vibration values (triax vector sum) according to
EN62841-2-1:
LPA (emission sound pressure level) dB(A) 73 87
LWA (sound power level) dB(A) 84 98
K (uncertainty for the given sound
level) dB(A) 3 3
Drilling into metal
Vibration emission value a
h,D
= m/s24.3 4.3
Uncertainty K = m/s21.5 1.5
Screwdriving
Vibration emission value a
h
= m/s2<2.5 <2.5
Uncertainty K = m/s21.5 1.5
Drilling into concrete
Vibration emission value a
h,ID
= m/s2–18.3
Uncertainty K = m/s2–1.5
Congratulations!
You have chosen a DeWALT tool. Years of experience, thorough
product development and innovation make DeWALT one of the
most reliable partners for professional power toolusers.
Technical Data
English (original instructions)
CORDLESS COMPACT 13 mm DRILL/DRIVER/HAMMERDRILL
DCD777, DCD778

55
ENGLISH
a WARNING: To reduce the risk of injury, read the
instructionmanual.
Definitions: Safety Guidelines
The definitions below describe the level of severity for each
signal word. Please read the manual and pay attention to
thesesymbols.
DANGER: Indicates an imminently hazardous situation
which, if not avoided, will result in death or seriousinjury.
WARNING: Indicates a potentially hazardous situation which,
if not avoided, could result in death or seriousinjury.
CAUTION: Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderateinjury.
NOTICE: Indicates a practice not related to personal injury
which, if not avoided, may result in propertydamage.
Denotes risk of electricshock.
Denotes risk offire.
Electromagnetic Compatibility Regulations, 2016, S.I.2016/1091
(as amended).
The Restriction of the Use of Certain Hazardous Substances
in Electrical and Electronic Equipment Regulations 2012, S.I.
2012/3032 (as amended).
For more information, please contact DeWALT at the following
address or refer to the back of the manual.
The undersigned is responsible for compilation of the technical
file and makes this declaration on behalf of DeWALT.
Karl Evans
Vice President Professional Power Tools EANZ GTS
DeWALT UK, 270 Bath Road, Slough
SL1 4DX
England
10.09.2021
GENERAL POWER TOOL SAFETY WARNINGS
WARNING: Read all safety warnings, instructions,
illustrations and specifications provided with this power
tool. Failure to follow all instructions listed below may result in
electric shock, fire and/or seriousinjury.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTUREREFERENCE
The term “power tool” in the warnings refers to your
mains‑operated (corded) power tool or battery‑operated (cordless)
powertool.
1) Work Area Safety
a ) Keep work area clean and well lit. Cluttered or dark areas
inviteaccidents.
b ) Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases or dust.
Power tools create sparks which may ignite the dust orfumes.
c ) Keep children and bystanders away while operating a
power tool. Distractions can cause you to losecontrol.
2) Electrical Safety
a ) Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electricshock.
b ) Avoid body contact with earthed or grounded surfaces,
such as pipes, radiators, ranges and refrigerators. There is an
increased risk of electric shock if your body is earthed orgrounded.
c ) Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electricshock.
d ) Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away from
heat, oil, sharp edges or moving parts. Damaged or entangled
cords increase the risk of electricshock.
e ) When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for outdoor
use reduces the risk of electricshock.
f ) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD) protected
supply. Use of an RCD reduces the risk of electricshock.
Batteries Chargers/Charge Times (Minutes)
Cat # VDC Ah Weight (kg) DCB104 DCB107 DCB112 DCB113 DCB115 DCB116 DCB117 DCB118 DCB132 DCB119
DCB546 18/54 6.0/2.0 1.08 60 270 170 140 90 80 40 60 90 X
DCB547 18/54 9.0/3.0 1.46 75* 420 270 220 135* 110* 60 75* 135* X
DCB548 18/54 12.0/4.0 1.46 120 540 350 300 180 150 80 120 180 X
DCB181 18 1.5 0.35 22 70 45 35 22 22 22 22 22 45
DCB182 18 4.0 0.61 60/40** 185 120 100 60 60/45** 60/40** 60/40** 60 120
DCB183/B/G 18 2.0 0.40 30 90 60 50 30 30 30 30 30 60
DCB184/B/G 18 5.0 0.62 75/50** 240 150 120 75 75/60** 75/50** 75/50** 75 150
DCB185 18 1.3 0.35 22 60 40 30 22 22 22 22 22 40
DCB187 18 3.0 0.54 45 140 90 70 45 45 45 45 45 90
DCB189 18 4.0 0.54 60 185 120 100 60 60 60 60 60 120
*Date code 201811475B or later
**Date code 201536 or later
Batteries
Chargers/Charge Times (Minutes)
Cat #
DC
Weight
*Date code 201811475B or later
**Date code 201536 or later

66
ENGLISH
Additional Specific Safety Rules for Drills/Drivers/
Impact Drills
• Wear ear protectors when impact drilling. Exposure to noise
can cause hearingloss.
• Use the auxiliary handles, if supplied with the tool. Loss of
control can cause personalinjury.
• Brace the tool properly before use. This tool produces a
high output torque and without properly bracing the tool during
operation, loss of control may occur resulting in personalinjury.
• Hold the power tool by insulated gripping surfaces when
performing an operation where the cutting accessory or
fasteners may contact hidden wiring. Cutting accessory
or fasteners contacting a “live” wire may make exposed metal
g ) Use the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into account the
working conditions and the work to be performed. Use of
the power tool for operations different from those intended could
result in a hazardoussituation.
h ) Keep handles and grasping surfaces dry, clean and
free from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the tool in
unexpectedsituations.
5) Battery Tool Use and Care
a ) Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type of battery
pack may create a risk of fire when used with another batterypack.
b ) Use power tools only with specifically designated
battery packs. Use of any other battery packs may create a risk of
injury andfire.
c ) When battery pack is not in use, keep it away from other
metal objects, like paper clips, coins, keys, nails, screws
or other small metal objects, that can make a connection
from one terminal to another. Shorting the battery terminals
together may cause burns or afire.
d ) Under abusive conditions, liquid may be ejected from
the battery; avoid contact. If contact accidentally occurs,
flush with water. If liquid contacts eyes, additionally seek
medical help. Liquid ejected from the battery may cause irritation
orburns.
e ) Do not use a battery pack or tool that is damaged
or modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or risk ofinjury.
f ) Do not expose a battery pack or tool to fire or excessive
temperature. Exposure to fire or temperature above 130°C may
causeexplosion.
g ) Follow all charging instructions and do not charge
the battery pack or tool outside the temperature range
specified in the instructions. Charging improperly or at
temperatures outside the specified range may damage the battery
and increase the risk offire.
6) Service
a ) Have your power tool serviced by a qualified repair
person using only identical replacement parts. This will
ensure that the safety of the power tool ismaintained.
b ) Never service damaged battery packs. Service of
battery packs should only be performed by the manufacturer or
authorized serviceproviders.
3) Personal Safety
a ) Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use a power tool
while you are tired or under the influence of drugs, alcohol
or medication. A moment of inattention while operating power
tools may result in serious personalinjury.
b ) Use personal protective equipment. Always wear eye
protection. Protective equipment such as a dust mask, non‑skid
safety shoes, hard hat or hearing protection used for appropriate
conditions will reduce personalinjuries.
c ) Prevent unintentional starting. Ensure the switch is in
the off‑position before connecting to power source and/or
battery pack, picking up or carrying the tool. Carrying power
tools with your finger on the switch or energising power tools that
have the switch on invitesaccidents.
d ) Remove any adjusting key or wrench before turning the
power tool on. A wrench or a key left attached to a rotating part
of the power tool may result in personalinjury.
e ) Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power tool in
unexpectedsituations.
f ) Dress properly. Do not wear loose clothing or jewellery.
Keep your hair and clothing away from moving parts. Loose
clothes, jewellery or long hair can be caught in movingparts.
g ) If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection can reduce
dust‑relatedhazards.
h ) Do not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool safety
principles. A careless action can cause severe injury within a
fraction of asecond.
4) Power Tool Use and Care
a ) Do not force the power tool. Use the correct power tool
for your application. The correct power tool will do the job better
and safer at the rate for which it wasdesigned.
b ) Do not use the power tool if the switch does not turn it
on and off. Any power tool that cannot be controlled with the
switch is dangerous and must berepaired.
c ) Disconnect the plug from the power source and/or
remove the battery pack, if detachable, from the power tool
before making any adjustments, changing accessories, or
storing power tools. Such preventive safety measures reduce the
risk of starting the power toolaccidentally.
d ) Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool or
these instructions to operate the power tool. Power tools are
dangerous in the hands of untrainedusers.
e ) Maintain power tools and accessories. Check for
misalignment or binding of moving parts, breakage of
parts and any other condition that may affect the power
tool’s operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly maintained
powertools.
f ) Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to bind and
are easier tocontrol.

77
ENGLISH
Description (Fig. A)
WARNING: Never modify the power tool or any part of it.
Damage or personal injury couldresult.
1 Trigger switch
2 Forward/reverse control button
3 Torque adjustment collar
4 Gear shifter
5 Worklight
6 Keyless chuck
7 Battery pack
8 Battery release button
9 Main handle
10 Belt hook (included with some models)
Markings on Tool
The following pictograms are shown on the tool:
a Read instruction manual beforeuse.
g Wear earprotection.
f Wear eyeprotection.
n Visible radiation. Do not stare intolight.
Date Code Position (Fig.A)
The date code 13, which also includes the year of manufacture,
is printed into thehousing.
Example:
2023XX XX
Year and Week of Manufacture
SAVE THESE INSTRUCTIONS
Battery Type
The following tools operate on an 18 volt battery pack:
DCD777, DCD778.
These battery packs may be used: DCB181, DCB182, DCB183,
DCB183B, DCB183G, DCB184, DCB184B, DCB184G, DCB185,
DCB187, DCB189, DCB546, DCB547, DCB548. Refer to Technical
Data for moreinformation.
Residual Risks
The following risks are inherent to the use of drills:
• Injuries caused by touching the rotating parts or hot parts of
thetool.
In spite of the application of the relevant safety regulations
and the implementation of safety devices, certain residual risks
cannot be avoided. These are:
• Impairment ofhearing.
• Risk of squeezing fingers when changingaccessories.
• Health hazards caused by breathing dust developed when
working inwood.
• Risk of personal injury due to flyingparticles.
• Risk of personal injury due to prolongeduse.
parts of the power tool “live” and could give the operator an
electricshock.
Safety Instructions When Using Long DrillBits
• Never operate at higher speed than the maximum speed
rating of the drill bit. At higher speeds, the bit is likely to bend
if allowed to rotate freely without contacting the workpiece,
resulting in personalinjury.
• Always start drilling at low speed and with the bit tip in
contact with the workpiece. At higher speeds, the bit is likely to
bend if allowed to rotate freely without contacting the workpiece,
resulting in personalinjury.
• Apply pressure only in direct line with the bit and do not
apply excessive pressure. Bits can bend causing breakage or
loss of control, resulting in personalinjury.
• Use clamps or other practical way to secure and support
the workpiece to a stable platform. Holding the work by hand
or against your body is unstable and may lead to loss ofcontrol.
• Wear ear protectors when hammering for extended
periods of time. Prolonged exposure to high intensity noise
can cause hearing loss. Temporary hearing loss or serious ear
drum damage may result from high sound levels generated
byhammerdrilling.
• Wear safety goggles or other eye protection. Hammering
and drilling operations cause chips to fly. Flying particles can
cause permanent eyedamage.
• Hammer bits and tools get hot during operation. Wear
gloves when touchingthem.
• Do not operate this tool for long periods of time. Vibration
caused by hammer action may be harmful to your hands and
arms. Use gloves to provide extra cushion and limit exposure by
taking frequent restperiods.
• Air vents often cover moving parts and should be
avoided. Loose clothes, jewellery or long hair can be caught in
movingparts.
Package Contents
The package contains:
1 Drill/driver or 1 drill/driver/hammerdrill
1 Charger
1 Belt hook (included with some models)
1 Magnetic bit holder (included with some models)
1 Li-Ion battery pack (C1, D1, E1, L1, M1, P1, S1, T1, X1,
Y1models)
2 Li-Ion battery packs (C2, D2, E2, L2, M2, P2, S2, T2, X2,
Y2models)
3 Li-Ion battery packs (C3, D3, E3, L3, M3, P3, S3, T3, X3,
Y3models)
1 Instruction manual
NOTE: Battery packs, chargers and kitboxes are not included
with N models. Battery packs and chargers are not included with
NT models. Bmodels include Bluetooth® battery packs.
NOTE: The Bluetooth® word mark and logos are registered
trademarks owned by the Bluetooth®, SIG, Inc. and any use of
such marks by DeWALT is under license. Other trademarks and
trade names are those of their respective owners.
• Check for damage to the tool, parts or accessories which may
have occurred duringtransport.
• Take the time to thoroughly read and understand this manual
prior tooperation.

88
ENGLISH
Dual Range Gearing (Fig.A)
The dual range feature of your drill/driver allows you to shift
gears for greaterversatility.
1. To select speed 1(high torque setting), turn the tool off
and permit it to stop. Slide the gear shifter4 forward (towards
thechuck).
Torque Adjustment Collar (Fig.A)
Your tool has an adjustable torque screwdriver mechanism for
driving and removing a wide array of fastener shapes and sizes
and in some models, a hammer mechanism for drilling into
masonry. Circling the torque adjustment collar3 are numbers,
a drill bit symbol, and on some models, a hammer symbol.
These numbers are used to set the clutch to deliver a torque
range. The higher the number on the collar, the higher the
torque and the larger the fastener which can be driven. To select
any of the numbers, rotate until the desired number aligns with
thearrow.
Forward/Reverse Control Button (Fig.A)
A forward/reverse control button2 determines the direction of
the tool and also serves as a lock-offbutton.
To select forward rotation, release the trigger switch and
depress the forward/reverse control button on the right side of
thetool.
To select reverse, release the trigger switch and depress the
forward/reverse control button on the left side of thetool.
The centre position of the control button locks the tool in the off
position. When changing the position of the control button, be
sure the trigger isreleased.
NOTE: The first time the tool is run after changing the direction
of rotation, you may hear a click on start up. This is normal and
does not indicate aproblem.
Variable Speed Trigger Switch (Fig.A)
To turn the tool on, squeeze the variable speed
triggerswitch1. To turn the tool off, release the trigger switch.
Your tool is equipped with a brake. The chuck will stop as soon
as the trigger switch is fullyreleased.
NOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
beavoided.
Belt Hook and Magnetic Bit Holder (Fig.A)
Optional Accessories
WARNING:To reduce the risk of serious personal injury,
ONLY use the tool's belt hook to hang the tool from a work
Inserting and Removing the Battery Pack from the
Tool (Fig.B)
NOTE: Make sure your battery pack 7 is fullycharged.
To Install the Battery Pack into the Tool Handle
1. Align the battery pack 7 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 intoplace.
To Remove the Battery Pack from the Tool
1. Press the battery release button 8 and firmly pull the battery
pack out of the toolhandle.
2. Insert battery pack into the charger.
Fuel Gauge Battery Packs (Fig.B)
Some DeWALT battery packs include a fuel gauge which
consists of three green LED lights that indicate the level of
charge remaining in the batterypack.
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 berecharged.
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-userapplication.
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 or
accessories. An accidental start‑up can causeinjury.
WARNING: Use only DeWALT battery packs andchargers.
11 Screw
12 Magnetic bit holder (included with some models)
13 Date code
Intended Use
These drills/drivers/hammerdrills are designed for professional
drilling, percussion drilling and screwdrivingapplications.
DO NOT use under wet conditions or in the presence of
flammable liquids orgases.
These drills/drivers/hammerdrills are professional powertools.
DO NOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
thistool.
• Young children and the infirm. This appliance is not
intended for use by young children or infirm persons
withoutsupervision.
• This product is not intended for use by persons (including
children) suffering from diminished physical, sensory or mental
abilities; lack of experience, knowledge or skills unless they are
supervised by a person responsible for their safety. Children
should never be left alone with thisproduct.
belt. DO NOT use the belt hook for tethering or securing the tool
to a person or object during use. DO NOT suspend tool overhead
or suspend objects from the belthook.
WARNING:To reduce the risk of serious personal injury,
ensure the screw holding the belt hook issecure.
CAUTION: To reduce the risk of personal injury or
damage, DO NOT use the belt hook to hang the drill while
using as aspotlight.
IMPORTANT: When attaching or replacing the belt hook10 or
magnetic bit holder12 , use only the mounting screw11 that
is provided. Be sure to securely tighten thescrew.
The belt hook and magnetic bit holder can be attached to either
side of the tool using only the screw provided, to accommodate
left- or right-handed users. If the hook or magnetic bit holder is
not desired at all, it can be removed from thetool.
To move belt hook or bit clip, remove the screw that holds it in
place then reassemble on the opposite side. Be sure to securely
tighten thescrew.

99
ENGLISH
Proper Hand Position (Fig.C)
WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.
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9
and the other hand holding the battery pack7.
OPERATION
Instructions for Use
WARNING: Always observe the safety instructions and
applicableregulations.
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.
Keyless Single Sleeve Chuck (Fig.G – I)
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 and remove the battery from the
tool when changingaccessories.
WARNING: Always ensure the bit is secure before starting
the tool. A loose bit may eject from tool causing possible
personalinjury.
Your tool features a keyless chuck6 with one rotating chuck
sleeve15 for one-handed operation of the chuck. To insert a
drill bit or other accessory, follow thesesteps.
1. Turn tool off and remove the battery pack.
2. Grasp the black sleeve of the chuck with one hand and
use the other hand to secure the tool. Rotate the sleeve
anticlockwise (as viewed from the front) far enough to accept
the desiredaccessory.
3. Insert the accessory about 19mm into the chuck and tighten
securely by rotating the chuck sleeve clockwise with one hand
while holding the tool with the other hand. Continue to rotate
the chuck sleeve until several ratchet clicks are heard to ensure
full grippingpower.
NOTE: Be sure to tighten chuck with one hand on the chuck
sleeve and one hand holding the tool for maximumtightness.
To release the accessory, repeat steps 1and 2above.
Worklight (Fig.A)
There is a worklight5 located just above the trigger switch1.
The worklight is activated when the trigger switch is depressed.
When the trigger is released, the worklight will stay illuminated
for up to 20seconds.
NOTE: The worklight is for lighting the immediate work surface
and is not intended to be used as aflashlight.
2. To select speed 2(low torque setting), turn the tool off
and permit it to stop. Slide the gear shifter back (away from
thechuck).
NOTE: Do not change gears when the tool is running. Always
allow the drill to come to a complete stop before changing
gears. If you are having trouble changing gears, make sure that
the dual range gear shifter is either completely pushed forward
or completely pushedback.
Screwdriver Operation (Fig.D)
1. Select the desired speed/torque range using the dual
range gear selector to match the speed and torque of the
plannedoperation.
2. Turn the torque adjustment collar 3 to the desired position.
Lower numbers indicate lower torque settings; higher numbers
indicate higher torquesettings.
3. Insert the desired fastener accessory into the chuck as you
would any drillbit.
4. Make some practice runs in scrap or on unseen areas to
determine the proper position of the clutchcollar.
5. Always start with lower torque settings, then advance to
higher torque settings to avoid damage to the workpiece
orfastener.
Drill Operation (Fig.E)
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.
1. Turn the collar 3 to the drillsymbol.
2. Select the desired speed/torque range using the gear shifter
to match the speed and torque to the plannedoperation.
3. For Wood, use twist bits, spade bits, power auger bits or hole
saws. For Metal, use high-speed steel twist drill bits or hole saws.
Use a cutting lubricant when drilling metals. The exceptions are
cast iron and brass which should be drilleddry.
4. 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.
5. Hold tool firmly with both hands to control the twisting
action of the drill. If model is not equipped with side handle,
grip drill with one hand on the handle and one hand on the
batterypack.
CAUTION: Drill may stall if overloaded causing a sudden
twist. Always expect the stall. Grip the drill firmly to control the
twisting action and avoidinjury.
6. 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.
7. To minimize stalling or breaking through the material, reduce
pressure on drill and ease the bit through the last fractional part
of thehole.
8. Keep the motor running when pulling the bit back out of a
drilled hole. This will help preventjamming.
9. 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.
Hammerdrill Operation (Fig.F)
DCD778 Only
1. Turn the collar 3 to the hammerdrillsymbol.
2. Select the high speed setting by sliding the selector back
(away from the chuck).
IMPORTANT: Use carbide-tipped or masonry bitsonly.

1010
ENGLISH
Protecting the Environment
wSeparate collection. Products and batteries marked
with this symbol must not be disposed of with
normal householdwaste.
Products and batteries contain materials that
can be recovered or recycled reducing the demand for raw
materials. Please recycle electrical products and batteries
according to local provisions. Further information is available at
www.2helpU.com.
Optional Accessories
WARNING: Since accessories, other than those offered by
DeWALT, have not been tested with this product, use of such
accessories with this tool could be hazardous. To reduce the risk
of injury, only DeWALT recommended accessories should be used
with thisproduct.
Consult your dealer for further information on the
appropriateaccessories.
D
Cleaning
WARNING: Blow dirt and dust out of the main housing with
dry air as often as dirt is seen collecting in and around the air
vents. Wear approved eye protection and approved dust mask
when performing thisprocedure.
WARNING: Never use solvents or other harsh chemicals for
cleaning the non‑metallic parts of the tool. These chemicals may
weaken the materials used in these parts. Use a cloth dampened
only with water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into aliquid.
Rechargeable Battery Pack
This long-life battery pack must be recharged when it fails
to produce sufficient power on jobs which were easily done
before. At the end of its technical life, discard it with due care for
ourenvironment:
• Run the battery pack down completely, then remove it from
thetool.
• Li-Ion cells are recyclable. Take them to your dealer or a local
recycling station. The collected battery packs will be recycled or
disposed ofproperly.
C
Lubrication
Your power tool requires no additionallubrication.
MAINTENANCE
Your power tool has been designed to operate 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.
The charger and battery pack are notserviceable.
3. Drill with just enough force on the hammer to keep it from
bouncing excessively or “rising” off the bit. Too much force will
cause slower drilling speeds, overheating and lower drillingrate.
4. Drill straight, keeping the bit at a right angle to the work. Do
not exert side pressure on the bit when drillling as this will cause
clogging of the bit flutes and a slower drillingspeed.
5. When drilling deep holes, if the hammer speed starts to drop
off, pull the bit partially out of the hole with tool still running to
help clear debris from thehole.
NOTE: A smooth, even flow of dust from the hole indicates
proper drillingrate.

NA485253 10/23
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