Overload Clutch; Drilling Tools - DeWalt D25012-XE Instruction Manual

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 and securely tightened. 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.
FIG. 3
Proper Hand Position (Fig. 3)
WARNING: To reduce the risk of serious personal injury, ALWAYS use proper hand
position as shown.
WARNING: To reduce the risk of serious personal injury, ALWAYS hold securely in
anticipation of a sudden reaction.
Proper hand position requires one hand on the side handle (C), with the other hand on
the main handle (B).

Overload Clutch

If the drill bit becomes jammed or caught, the drive to the drill spindle is interrupted
by the overload clutch. Because of the forces that occur as a result, always hold the
machine securely with both hands and take a firm stance.

Drilling Tools

The machine is intended for hammerdrilling in concrete, brick and stone. It is also
suitable for drilling without impact in wood, metal, ceramic and plastic.
Drilling (Fig. 1)
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.
Press 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
1. 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.
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.
DRILLING IN METAL
An SDS Plus to round shank adaptor chuck is required. Ensure that tool is in
®
drill-only mode. Start drilling with slow speed and increase to full power while
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