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3. 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.
4. Hold tool firmly to control the twisting action of the drill.
5. 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.
6. To minimize stalling on breaking through the material, reduce pressure on drill and ease the
bit through the last fractional part of the hole.
7. Keep the motor running when pulling the bit back out of a drilled hole. This will help prevent
jamming.
8. For optimum control and comfort, the drill may be grasped in one of the following illustrated
manners: Around the neck of the drill using one or two fingers to operate the paddle switch
as in Figure 5, in an inverted position with the heel of the hand pushing on the head of the
drill and one or two fingers on the paddle switch as in Figure 6, or holding the head of the
drill with one hand and operating the paddle switch with the other hand, holding the back
end of the drill as in Figure 7.
Drilling in Wood
Holes in wood can be made with the same twist drills used for metal. These bits may overheat
unless pulled out frequently to clear chips from the flutes. For larger holes, use spade bits, power
auger bits, or hole saws. Work that is likely to splinter should be backed up with a block of wood.
Drilling in Metal
Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass which
should be drilled dry. The cutting lubricants that work best are sulphurized cutting oil or lard oil;
bacon grease will also serve the purpose.
Drilling in Masonry
Use carbide tipped masonry bits at low speeds. Keep even force on the drill but not so much
that you crack the brittle materials. A smooth, even flow of dust indicates the proper drilling rate.
MAINTENANCE
CAUTION: With the motor running, blow dirt and dust out of all air vents with dry air at least
once a week. Wear safety glasses when performing this. Exterior plastic parts may be cleaned
with a damp cloth and mild detergent. Although these parts are highly solvent resistant, NEVER
use solvents.
If replacement of the power cord is necessary, the tool should be taken to a D
service center, a D
WALT authorized service center or other qualified service personnel in order
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to avoid a safety hazard.
Accessories
Recommended accessories for use with your tool are available at extra cost from your local
dealer or authorized service center.
CAUTION: The use of any other accessory not recommended for use with this tool could be
hazardous.
CAUTION: Turn off and unplug the tool before making any adjustments or removing
or installing attachments or accessories.
For safety in use, the following accessories should be used only in sizes up to the maximums
shown in the table below.
MAXIMUM RECOMMENDED CAPACITIES
Chuck Size
Drill Speed (RPM)
Twist bits in metal
Flat boring bits in wood
Carbide tipped bits in masonry
Hole saws in wood or metal
CAUTION: Accessories must be rated for at least the speed recommended on the tool
warning label. Wheels and other accessories running over rated speed can fly apart and
cause injury. Accessory ratings must always be above tool speed as shown on tool
nameplate.
Wire wheel brushes
Wire cup brushes
Buffing wheels
Rubber backing pads
ROUND-SHANK MASONRY BITS
These bits are carbide-tipped for top performance and extra long life in most masonry drilling
applications.
BIT
DIAMETER
3/16" (3.8mm)
1/4" (6.3mm)
5/16" (3.1mm)
3/8" (9.5mm)
1/2" (12.7mm)
9/16" (14.2mm)
HIGH-SPEED HOLE SAWS (use with mandrels)
SAW OUTSIDE
DIAMETERS
5/8" (15.8mm)
3/4" (19mm)
7/8" (22.2mm)
1-5/16" (33.3mm)
1" (25.4mm)
1-1/16" (26.9mm)
1-1/8" (28.5mm)
1-3/16" (30.1mm)
Repairs
This product is not user serviceable. There are no user serviceable parts inside this tool.
Servicing at an authorized service center is required to avoid damage to the tool.
To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustments should be
performed by a D
WALT factory service center, a D
E
qualified service personnel. Always use identical replacement parts.
3/8" (9.5mm)
1200
3/8" (9.5mm)
1-1/4" (31.7mm)
9/16" (14.2 mm)
1-1/4" (31.7mm)
4" (101.6mm) diameter maximum
3" (76.2mm) diameter maximum
3" (76.2mm) diameter maximum
4-5/8" (117.4mm) diameter maximum
USABLE
SHANK
DRILLING DEPTH
DIAMETER
1-1/2" (38.1mm)
3/16" (3.8mm)
2" (50.8mm)
1/4" (6.3mm)
2-1/4" (57.1mm)
1/4" (6.3mm)
2-1/2" (63.5mm)
1/4" (6.3mm)
2-1/2" (63.5mm)
1/4" (6.3mm)
4-1/4" (107.9mm)
1/4" (6.3mm)
FOR CONDUIT
FOR PIPE TAP
SIZES
SIZES
Built in mandrel
no separate mandrel
3/8" (9.5mm)
1/2" (12.7mm)
3/4" (19mm)
3/4" (19mm)
1" (25.4mm)
WALT authorized service center or other
E
FIG. 1
C
D
FIG. 3
F
WALT factory
E
FIG. 5
A
B
FIG. 2
A
FIG. 4
E
H
C
FIG. 6
FIG. 7
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B
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