Craftsman 315.DD2010 Manual Del Operador página 9

kEYLESS cHUck
See Figure 4, page i.
The drill has a keyless chuck to tighten or release drill bits
in the chuck jaws. Grasp and hold the collar of the chuck
with one hand. Rotate the chuck body with your other
hand. The arrows on the chuck indicate which direction
to rotate the chuck body in order to LOck (tighten) or
UnLOck (release) the drill bit.
WARnInG:
Do not hold the chuck with one hand
and use the power of the drill to tighten the chuck
jaws on the bit. The chuck body could slip in your
hand, or your hand could slip and come in contact
with the rotating bit. This could cause an accident
resulting in serious personal injury.
TWO-SPEED GEAR TRAIn
See Figure 5, page i.
The drill has a two-speed gear train designed for drilling or
driving at LO (1) or HI (2) speeds. A slide switch is located
on top of the drill to select either LO (1) or HI (2) speed.
When using drill in the LO (1) speed range, speed will
decrease and unit will have more power and torque. When
using drill in the HI (2) speed range, speed will increase
and unit will have less power and torque. Use LO (1)
speed for high power and torque applications and HI (2)
speed for fast drilling or driving applications.
ADJUSTABLE TORQUE cLUTcH
This product is equipped with an adjustable torque clutch
for driving different types of screws into different materials.
The proper setting depends on the type of material and the
size of screw you are using.
ADJUSTInG TORQUE
See Figure 6, page i.
There are twenty-four torque indicator settings located on
the front of the drill.
 Rotate the adjusting ring to the desired setting.
• 1 - 4 For driving small screws
• 5 - 8 For driving screws into soft material
• 9 - 12 For driving screws into soft and hard
materials
• 13 - 16 For driving screws into hard wood
• 17 - 20 For driving large screws
• 21- For heavy drilling
InSTALLInG BITS
See Figures 7 - 8, page i.
 Lock the switch trigger by placing the direction of
rotation selector in the center position.
 Open or close the chuck jaws to a point where the
opening is slightly larger than the bit size you intend to
OPERATIOn
use. Also, raise the front of the drill slightly to keep the
bit from falling out of the chuck jaws.
 Insert the bit.
WARnInG:
the chuck jaws. Do not insert the bit into the chuck
jaws at an angle then tighten, as shown in figure 8.
This could cause the bit to be thrown from the
drill, resulting in possible serious personal injury or
damage to the chuck.
 Tighten the chuck jaws on the drill bit. To tighten,
grasp and hold the collar of the chuck with one hand,
while rotating the chuck body with your other hand.
nOTE: Rotate the chuck body in the direction of the
arrow marked LOck to tighten the chuck jaws.
REMOVInG BITS
See Figure 7, page i.
 Lock the switch trigger by placing the direction of
rotation selector in the center position.
 Open the chuck jaws.
nOTE: Rotate the chuck body in the direction of the
arrow marked UnLOck to open the chuck jaws. Do
not use a wrench to tighten or loosen the chuck jaws.
 Remove the bit.
DRILLInG
See Figure 9, page ii.
A level is located on the top of the motor housing to help
keep the drill bit level during use.
 Check the direction of rotation selector for the correct
setting (forward or reverse).
 Secure the material to be drilled in a vise or with
clamps to keep it from turning as the drill bit rotates.
 Hold the drill firmly and place the bit at the point to be drilled.
 Depress the switch trigger to start the drill.
 Move the drill bit into the workpiece, applying only
enough pressure to keep the bit cutting. Do not force
the drill or apply side pressure to elongate a hole. Let
the tool do the work.
WARnInG:
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.
9 - English
Make sure to insert the bit straight into
Be prepared for binding at bit