Chicago Electric 47991 - Manual (Page 5)

Page 5 SKU 47991 For technical questions, please call 1-800-444-3353.
3. With heavy leather gloves on, tug on
the bit and make sure it is securely
attached. Check that it is straight.
Note: Always use sharp bits. Dull or
damaged bits may cause undue stress
on the drill and possibly break causing
injury. Bits are available at Harbor
Freight Tools.
4. Securely clamp your workpiece.
5. Locate the Side Handle on the desired
side of the tool.
Drilling
6. When drilling wood, place the bit
at the point to be drilled. If you are
drilling a hard, smooth surface, use a
punch to mark the drill location. Set
the Directional Switch forward. Grasp
the handles firmly with both hands
and slowly squeeze the Trigger (34).
Never operate the tool without the side
handle. Never force the tool. Only
apply light pressure when horizontal
drilling. If you need more or less
torque, use the torque adjustment on
the top of the drill.
Note: When drilling plastics or plastic
coated chip board, follow the same
directions as stated in number 5 for
wood.
Note: If a bit becomes wedged into the
workpiece, stop and change the
Directional Switch to the reverse
position. Then slowly squeeze the
Trigger to back the bit out of the work
piece.
7. When drilling metal, always use a
punch to mark the drilling position.
Use a lubricant to prolong the life of
the bit and increase the drilling action
with most metals. With steel, tin, and
sheet metal use a light machine oil,
with aluminum, use paraffin. Do not
use lubricants with brass, copper, and
cast iron. Grasp the handles firmly with
both hands and slowly squeeze the
Trigger (34). Never operate the tool
without the side handle. Never force
the tool. Only apply light pressure
when horizontal drilling.
8. When driving screws, use bits suitable
for the type and size of screw you are
using. Drill a pilot hole for the screw
head to bite into. Use the lowest
torque setting. Grasp the handles
firmly with both hands and slowly
squeeze the Trigger (34). Never force
the tool. To back out a screw, stop and
change the Directional Switch to the
back position.
MAINTENANCE
1. Unplug the drill while performing
maintenance.
2. Periodically check the mounting screws
and tighten if necessary.
3. Clean the unit with a damp cloth.
Never use solvents to clean the unit.
4. Inspect the chuck and remove any dirt
or debris.
5. Inspect the Carbon Brushes (29). See
Figure 1 on page 4.
• Remove the Carbon Brush Cap
(30) on top of the drill.
• Take the Carbon Brush (29) out of
the Brush Holder (28). If it is dirty,
use a pencil eraser to clean it. If it
is worn, replace it and replace the
Carbon Brush Cap (30). If you
replace one Carbon Brush, you
must replace them both. Repeat
the process with the Carbon Brush
Cap (30) on the bottom of the drill.
REV 07d