DeWalt DCD778L1 User Manual

ENGLISH
10
Three Year Limited Warranty
For warranty terms, go to https://www.dewalt.com/Legal/
Warranty/3-Year-Limited-Warranty.
To request a written copy of the warranty terms, contact:
Customer Service at DeWALT Industrial Tool Co., 701East
Joppa Road, Towson, MD 21286or call 1-800-4-DeWALT
(1-800-433-9258).
LATIN AMERICA: This warranty does not apply to products
sold in Latin America. For products sold in Latin America,
see country specific warranty information contained in
the packaging, call the local company or see website for
warrantyinformation.
FREE WARNING LABEL REPLACEMENT: If your warning
labels become illegible or are missing, call 1-800-4-DeWALT
(1-800-433-9258) for a freereplacement.
Register Online
Thank you for your purchase. Register your product nowfor:
• WARRANTY SERVICE: Registering your product will
help you obtain more efficient warranty service in case
there is a problem with yourproduct.
• CONFIRMATION OF OWNERSHIP: In case of
an insurance loss, such as fire, flood or theft, your
registration of ownership will serve as your proof
ofpurchase.
• FOR YOUR SAFETY: Registering your product will
allow us to contact you in the unlikely event a safety
notification is required under the Federal Consumer
SafetyAct.
• Register online at www.dewalt.com
Repairs
The charger and battery pack are notserviceable. There are
no serviceable parts inside the charger or batterypack.

WARNING: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment (including brush
inspection and replacement, when applicable) should
be performed by a DeWALT factory service center or a
DeWALT authorized service center. Always use identical
replacementparts.
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.
Recommended accessories for use with your tool are
available at extra cost from your local dealer or authorized
service center. If you need assistance in locating any
accessory, please contact DeWALT call 1-800-4-DeWALT
(1-800-433-9258) or visit our website:www.dewalt.com.
Cleaning

WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1approved eye
protection 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 plastic 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.
MAINTENANCE

WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can causeinjury.
Your DeWALT 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.
‑ DO NOT DEPRESS TRIGGER SWITCH ON AND OFF
IN AN ATTEMPT TO START A STALLED DRILL—
THIS CAN DAMAGE THEDRILL.
‑ To minimize stalling or breaking through the
material, reduce pressure on drill and ease the bit
through the last fractional part of thehole.
• Large holes (5/16" to 1/2" [8 mm to 13mm]) in steel can
be made easier if a pilot hole (5/32" to 3/16" [4 mm to
5mm]) is drilledfirst.
• If drilling thin material or material that is prone to
splinter, use a wood “back-up” block to prevent damage
to theworkpiece.
Hammerdrilling
IMPORTANT: Use carbide-tipped or masonry bits rated for
percussion drillingonly.
1. Turn the mode selector
5
to the "hammersymbol."
2. Pull the trigger, applying just enough pressure on the
hammer to keep it from bouncing excessively or "rising"
off the bit.
Recommendations for Hammerdrilling
• Too much force will cause slower drilling speeds,
overheating, and a lower drillingrate.
• A smooth even flow of material indicates the proper
drillingrate.
• 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.
• 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.

DeWalt DCD778L1 Specifications

General

Brand	DeWalt
Model	DCD778L1
Category	Power Tool
Language	English