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WARNING. Be prepared for binding at
bit breakthrough. When these situations
occur, drill has a tendency to grab and
kick opposite to the direction of rotation
and could cause loss of control when
breaking through material. If not
prepared, this loss of control can result
in possible serious injury.
When drilling hard, smooth surfaces, use a center
punch to mark the desired hole location.
This will prevent the drill bit from slipping off-center
as the hole is started.
When drilling metals, use a light oil on the drill bit to
keep it from overheating. The oil will prolong the life
of the bit and increase the drilling action.
If the bit jams in the workpiece or if the drill stalls,
stop the tool immediately. Remove the bit from the
workpiece and determine the reason for jamming.
NOTE: This drill has an electric brake. When the
switch trigger is released, the chuck stops turning.
When the brake is functioning properly, sparks will
be visible through the vent slots on the housing.
This is normal and is the action of the brake.
WOOD DRILLING
For maximum performance, use high speed steel
bits for wood drilling.
Select drilling mode.
Begin drilling at a very low speed to prevent the bit
from slipping off the starting point. Increase the
speed as the drill bit bites into the material.
When drilling through holes, place a block of wood
behind the workpiece to prevent ragged or
splintered edges on the back side of the hole.
METAL DRILLING
For maximum performance, use high speed steel
bits for metal or steel drilling.
Select drilling mode.
Begin drilling at a very low speed to prevent the bit
from slipping off the starting point.
Maintain a speed and pressure which allows
cutting without overheating the bit. Applying too
much pressure will:
•
Overheat the drill;
•
Wear the bearings;
OPERATION
•
Bend or burn bits; and
•
Produce off-center or irregular-shaped holes.
When drilling large holes in metal, start with a small
bit, then finish with a larger bit. Also, lubricate the
bit with oil to improve drilling action and increase bit
life.
MASONRY DRILLING
For maximum performance, use carbide-tipped
masonry impact bits when drilling holes in brick,
tile, concrete, etc.
Slide adjustment button on hammer drill left for
hammer mode.
Apply light pressure and medium speed for best
results in brick.
Apply additional pressure for hard materials such
as concrete.
When drilling holes in tile, practice on a scrap piece
to determine the best speed and pressure. Begin
drilling at a very low speed to prevent the bit from
slipping off the starting point.
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