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Drilling, Chuck removal, Operation – Craftsman 973.114240 User Manual

Page 13

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OPERATION

DRILLING

See Figure

11

.

When drilling hard smooth surfaces use a center punch
to mark desired hole location. This will prevent the drill

bit from slipping off center as the hole is started. How­
ever, the low speed feature allows starting holes without

center punching if desired. To accomplish this, simply
operate your drill at a low speed until the hole is started.

The material to be drilled should be secured in a vise or
with clamps to keep it from turning as the drill bit rotates.

Hold tool firmly and place the bit at the point to be drilled.
Depress the switch trigger to start tool.

Move the drill bit into the workpiece applying only
enough pressure to keep the bit cutting. Do not force or
apply side pressure to elongate a hole.

A WARNING:

Be prepared for binding or 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 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 workpiece or if the drill stalls, release

switch trigger immediately. Remove the bit from the

workpiece and determine the reason for jamming.

CHUCK REMOVAL

See Figures

12

, 13, and 14.

The chuck must be removed in order to use some
accessories. To remove:

Lock switch trigger or your drill by placing the

direction of rotation selector in center position.
See Figure

2

.

Insert a 5/16 inch or larger hex key wrench into the

chuck of your drill and tighten the chuck jaws
securely.

Tap the hex key wrench sharply with a mallet in a
clockwise direction. See Figure 13. This will

loosen the screw in the chuck for easy removal.

KEYLESS

CHUCK

CHUCK

JAWS

HEX KEY

WRENCH

Fig.

12

Open chuck jaws and remove hex key wrench.

Remove the chuck screw by turning it in a clock­

wise direction. See Figure 13.

Note:

The screw has left hand threads.

SCREWDRIVER

Fig. 13

13