Variable Speed; Chuck Key; Keyless Chuck - Craftsman 315.101050 Owner's Manual

VARIABLE SPEED
(Models 315.101040 and 315.101050)
See Figure 4.
If you have one of these models, your drill has a
variable speed switch designed to allow operator
control and adjustment of speed and torque limits.
The speed and torque of your drill can be increased or
decreased by depressing the switch trigger.
Note: Depress switch trigger all the way for maximum
speed and torque of your drill. Depress switch trigger
only part of the way for less speed and torque.
CHUCK KEY (Model 315.101030)
See Figure 5.
A chuck key has been provided for use when install-
ing or removing bits. It is also used when removing
the chuck. (See chuck removal section).
TO INCREASESPEED,
PULLSWITCHTRIGGER
MODELS 315,101040 AND 315.101050 Fig. 4
Avoid running your drill at low speeds for extended
periods of time. Running at low speeds under con-
stant usage may cause your drill to become over-
heated. If this occurs, cool your drill by running it
without a load and at full speed.
The following guidelines may be used in determining
correct speed for various applications:
Low speed is ideal when minimum speed and power
is required. For example: starting holes without center
punching, driving screws, mixing paint, and drilling in
ceramics.
Medium speed is suitable for drilling hard metals,
plastics, and laminates.
High speed produces best results when maximum
power is required. For example: drilling in wood; soft
metals such as aluminum, brass, and copper; and
when using driving accessories.
CHUCK
KEY
Fig. 5
KEYLESS CHUCK
(Models 315.101040 and 315.101050)
See Figure 6.
Your new drill has a keytess chuck. As the name
implies, you can hand 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.
UNLOCK
(RELEASE)
CHUCKBODY
DRILL
BIT
10
LOCK
(TIGHTEN)
CHUCKCOLLAR
MODELS 315.101040 AND 315.101050
/
Fig. 6