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WARNING: Use of this tool can generate and/or disburse dust, which may cause serious and
permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles away from face and body.
• The label on your tool may include the following symbols. The symbols and their definitions
are as follows:
V ........................volts A .......................amperes
Hz ......................hertz W ......................watts
min ....................minutes
.................... alternating current
.................direct current ....................alternating or direct current
......................Class I Construction
n
o .....................no load speed
.......................... (grounded) .....................earthing terminal
......................Class II Construction .....................safety alert symbol
.......................... (double insulated) BPM .................beats per minute
…/min ...............per minute RPM .................revolutions per minute
COMPONENTS (FIG. 1)
WARNING: Never modify the power tool or any part of it. Damage or personal injury could
result.
A. Trigger switch D. Side handle
B. Locking button E. Selector dial
C. Reversing lever F. Depth rod
INTENDED USE
These heavy-duty hammerdrills are designed for professional drilling and hammerdrilling. DO
NOT use under humid conditions or in presence of flammable liquids or gases.
These heavy-duty hammerdrills are professional power tools. DO NOT let children come into
contact with the tool. Supervision is required when inexperienced operators use this tool.
Switch (Fig. 2)
To start hammerdrill, depress the trigger switch (A). To stop hammerdrill, release the switch.
To lock the trigger switch in the ON position for continuous operation, depress the trigger switch
and push up the locking button (B). The tool will continue to run.
To turn the tool OFF from a locked on condition, squeeze and release the trigger once. Before
using the tool (each time), be sure that the locking button release mechanism is working freely.
Do not lock the switch ON when drilling by hand so that you can instantly release the trigger
switch if the bit binds in the hole. The locking button is for use only when the hammerdrill is
mounted in a drill press stand or other wise held stationary. Be sure to release the locking
mechanism before disconnecting the plug from the power supply. Failure to do so will cause the
hammerdrill to start immediately the next time it is plugged in. Damage or injury could result.
VARIABLE SPEED TRIGGER SWITCH (FIG. 2)
The variable speed trigger switch (A) permits speed control. The farther the trigger switch is
depressed, the higher the speed of the hammerdrill.
NOTE: Use lower speeds for starting holes, drilling in plastics or ceramics or driving screws.
REVERSING LEVER (FIG. 2)
The reversing lever (C), located above the trigger switch, changes the direction of rotation of the
hammerdrill and is used when backing out screws and jammed drill bits.
To operate the tool in reverse, release the trigger switch and push the lever to the left (when
viewed from the chuck end).
To operate the drill in forward, release the trigger switch and push the lever to the right (when
viewed from the chuck end).
Return the reversing lever to the forward position after all operations in reverse are completed.
Side Handle
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 maximize control.
A side handle (D) is supplied with this hammerdrill. It clamps to the front of the gear case as
shown in Figure 1 and can be rotated 360˚ for right- or left- hand use.
After the side handle is rotated into position, it should be pushed rearward until the slots (G)
on the lip of the side handle are aligned and fully engaged with the projecting tabs (H) on the
underside of the gear case. The side handle is then securely clamped by turning clockwise until
tight.
Hammer/Drill Selector
To switch the tool from the drilling mode to the hammering mode (or vice-versa) rotate the
selector dial (E) on the applicable symbol shown in Figure 1. For straight drilling, align the drill bit
symbol toward the chuck. For hammering, align the hammer symbol with the lever, as shown.
NOTE: The selector must be in either drill or hammer/drill mode at all times. There are no
operable positions between the two modes.
Keyed Chuck (Fig. 1)
Open chuck jaws by turning collar with fingers and insert shank of bit about 3/4" (19 mm) into
chuck (I). Tighten chuck collar by hand. Place chuck key in each of the three holes, and tighten
in clockwise direction. It’s important to tighten chuck with all three holes to prevent slippage. To
release bit, turn chuck key counterclockwise in just one hole, then loosen the chuck by hand. Any
authorized D
EWALT service center can install a keyless chuck in place of a keyed chuck.
Depth Rod (Fig. 1)
To adjust the depth rod, loosen the side handle (D) and move depth rod (F) so that the distance
between the end of the rod and the end of the bit equals the desired drilling depth. When drilling
with depth rod, stop when end of rod reaches surface of material.
Operation
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.
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 maximize control.
WARNING: Do not attempt to tighten or loosen 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
occur.
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 bare hands.
DRILLING OPERATION
1. Use sharp drill bits only. For WOOD, begin with low speed and use twist drill bits, spade bits,
power auger bits or hole saws. For METAL, begin with low speed and use 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. For MASONRY, use carbide-tipped bits or masonry bits.
A smooth, even flow of dust indicates the proper drilling rate.
NOTE: Large [5/16" (8 mm) to 1/2" (13 mm)] holes in steel can be made easier if a pilot hole
[5/32" (4 mm) to 3/16" (5 mm)] is drilled first.
2. Always apply pressure in a straight line with the bit. Use enough pressure to keep the drill
bit biting, but do not push hard enough to stall the motor or deflect the bit.
3. Hold tool firmly with both hands to control the twisting action of the drill.
WARNING: Drill may stall if overloaded causing a sudden twist. Always expect the stall.
Grip the drill firmly with both hands to control the twisting action and avoid injury.
4. IF DRILL STALLS, it is usually because it is being overloaded. RELEASE TRIGGER
IMMEDIATELY, remove drill bit from work, and determine cause of stalling. DO NOT
CLICK TRIGGER OFF AND ON IN AN ATTEMPT TO START A STALLED DRILL – THIS
CAN DAMAGE THE DRILL.
5. To minimize stalling or breaking through the material, reduce pressure on drill and ease the
bit through the last fractional part of the hole.
6. Keep the motor running when pulling the bit back out of a drilled hole. This will help prevent
jamming.
7. 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
1. When drilling, use 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 a lower
drilling rate.
2. Drill straight, keeping the bit at a right angle to the work. Do not exert side pressure on the
bit when drilling as this will cause clogging of the bit flutes and a slower drilling speed.
3. When drilling deep holes, if the hammer speed starts to drop off, pull the bit partially out of
the hole with the tool still running to help clear debris from the hole.
4. For masonry, use carbide-tipped bits or masonry bits. A smooth even flow of dust indicates
the proper drilling rate.
MAINTENANCE
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.
Cleaning
WARNING: Blow dirt and dust out of all air vents with dry air at least once a week. Wear
proper ANSI Z87.1 (CAN/CSA Z94.3) eye protection and proper NIOSH/OSHA/MSHA
respiratory protection when performing this.
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.
Lubrication
Your tool was properly lubricated before leaving the factory. In from two to six months, depending
upon use, take or send your tool to an authorized service center for a complete cleaning,
inspection and lubrication. Tools used constantly on production jobs will need relubrication more
often. Also, tools “out of service” for long periods should be relubricated before being put back
to work.
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 D
EWALT, 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
D
EWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286, call 1-800-4-DEWALT
(1-800-433-9258) or visit our website www.dewalt.com.
MAXIMUM RECOMMENDED CAPACITIES
DW511
CHUCK CAPACITY 1/2" (13 mm)
R.P.M. 0–2700
BITS, METAL DRILLING 1/2" (13 mm)
WOOD, FLAT BORING 1-1/2" (40 mm)
BITS, MASONRY DRILLING
optimum 1/8" –3/8" (3.2–10 mm)
maximum 5/8" (16 mm)
Repairs
To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustments (including
brush inspection and replacement) should be performed by a DEWALT factory service center,
a D
EWALT authorized service center or other qualified service personnel. Always use identical
replacement parts.
Three Year Limited Warranty
DEWALT will repair, without charge, any defects due to faulty materials or workmanship for
three years from the date of purchase. This warranty does not cover part failure due to normal
wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit
www.dewalt.com or call 1-800-4-D
EWALT (1-800-433-9258). This warranty does not apply to
accessories or damage caused where repairs have been made or attempted by others. This
warranty gives you specific legal rights and you may have other rights which vary in certain
states or provinces.
In addition to the warranty, D
EWALT tools are covered by our:
1 YEAR FREE SERVICE
D
EWALT will maintain the tool and replace worn parts caused by normal use, for free, any time
during the first year after purchase.
90 DAY MONEY BACK GUARANTEE
If you are not completely satisfied with the performance of your D
EWALT Power Tool, Laser, or
Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt
for a full refund – no questions asked.
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 either 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
EWALT for a free replacement.
DW511
WARNING AVERTISSEMENT
SER.
D
E
WALT INDUSTRIAL TOOL CO., BALTIMORE, MD 21286 U.S.A.
FOR SERVICE INFORMATION, CALL 1-800-4-D
E
WALT www.D
E
WALT.com
TO REDUCE THE RISK OF INJURY, USER MUST READ
AND UNDERSTAND INSTRUCTION MANUAL. WHEN
SERVICING, USE ONLY IDENTICAL REPLACEMENT
PARTS. ALWAYS USE PROPER EYE AND
RESPIRATORY PROTECTION. À TITRE PRÉVENTIF,
LIRE LE GUIDE.
1/2" (13mm)
VSR HAMMER DRILL
FIG. 1
F
B
E
B
A
C
FIG. 2