DeWalt D25011K, Manual

E NGLISH

9

Depress mode selector button (f) and turn the 

mode selector (g) to the drill bit symbol for drilling, 

to the hammer symbol for hammering or to the 

hammerdrill symbol for hammerdrilling.

DRILLING OPERATION

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. For MASONRY, use 

carbide-tipped bits or masonry bits. A smooth, 

even flow of dust indicates the proper drilling 

rate. 

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. 

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. 

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.

To minimize stalling or breaking through the 

material, reduce pressure on drill and ease the 

bit through the last fractional part of the hole. 

Keep the motor running when pulling the bit 

back out of a drilled hole. This will help prevent 

jamming.  

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. 

DRILLING IN METAL 

An SDS Plus

®

 to round shank adapter chuck is 

required. Ensure that tool is in drill-only mode. 

Start drilling with slow speed and increase to full 

power while applying firm pressure on the tool. A 

smooth even flow of metal chips indicates the 

proper drilling rate. Use a cutting lubricant when 

drilling metals. The exceptions are cast iron and 

brass which should bedrilled dry.

NOTE: 

Large [7.9 mm to 12.7 mm (5/16" to 1/2")] 

holes in steel can be made easier if a pilot hole [4 

mm to 4.8 mm (5/32" to 3/16")] is drilled first.

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DRILLING IN WOOD 

An SDS Plus

®

 to round shank adapter chuck is 

required. Ensure that tool is in drill-only mode. 

Start drilling with slow speed and increase to full 

power while applying firm pressure on the tool. 

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 apt to 

splinter should be backed up with a block of 

wood.

Screwdriving (fig. 1)

Set the mode selector switch (g) to the rotary 

drilling position. 

Select the direction of rotation. 

Insert the special SDS Plus

®

 screwdriving 

adaptor for use with hexagonal screwdriver 

bits.

Insert the appropriate screwdriver bit. When 

driving slotted head screws always use bits 

with a finder sleeve. 

Gently press the variable speed switch (a) to 

prevent damage to the screw head. In reverse 

(LH) rotation the tool speed is automatically 

reduced for easy screw removal. 

When the screw is flush with the workpiece, 

release the variable speed switch to prevent 

the screw head from penetrating into the 

workpiece.

Hammerdrill Operation

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. 

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. 

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. 

For masonry, use carbide-tipped bits or 

masonry bits. A smooth even flow of dust 

indicates the proper drilling rate.

Various types of SDS-plus

®

 drill bits and adaptors 

are available as an option.

Consult your dealer for further information on the 

appropriate accessories.  

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