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• Large holes (5/16" to 1/2" [7.9 mm to 12.7 mm]) in steel
can be made more easily if a pilot hole (5/32" to 3/16"
[4 mm to 4.8 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. Select the desired speed/torque range using the
speed selector
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to match the speed and torque to the
planned operation. Turn the mode selection collar
hammerdrill 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.
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 D
WALT power tool has been designed to operate
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over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper
tool care and regular cleaning.
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.
Accessories
WARNING: Since accessories, other than those offered by
D
WALT, have not been tested with this product, use of such
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accessories with this product could be hazardous. To reduce
the risk of injury, only D
WALT recommended accessories
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should be used with this product.
Recommended accessories for use with your product are
available at extra cost from your local dealer or authorized
service center. If you need assistance in locating any
accessory, please contact D
(1-800-433-9258) or visit our website: www.dewalt.com.
8
DCD798
WALT. Call 1-800-4-D
e
Repairs
The charger and batteries 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 factory service center or an authorized service
center. Always use identical replacement parts.
Register Online
Thank you for your purchase. Register your product now for:
• WARRAnTY sERViCE: Registering your product will help
6
to the
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/account-login.
Three‑Year Limited Warranty
For warranty terms, go to www.dewalt.com/support/
warranty.
To request a written copy of the warranty terms, contact:
Customer Service at D
Joppa Road, Towson, MD 21286 or call 1-800-4-D
(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-D
(1-800-433-9258) for a free replacement.
WALT
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WALT Industrial Tool Co., 701 East
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WALT
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WALT
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