DeWalt D21720-B3 Manual De Instrucciones página 7

Selecting the Operating Mode (Fig. 2)
The tool can be used in two operating modes:
Rotary drilling:
for steel, wood and plastics.
Percussion drilling:
simultaneous rotating and impacting for concrete and
masonry drilling operations.
Select the required operating mode by rotating the mode selector
(E) to the required position.
Inserting and Removing a Bit (Fig. 1)
KEYED CHUCK
1. Open the chuck by turning the sleeve (I) counterclockwise and
insert the bit shank.
2. Put the chuck key (J) into each hole in the side of the chuck and
turn clockwise until tight.
To remove the bit, proceed in reverse order.
Fitting the Side Handle (Fig. 1)
The side handle (F) can be fitted to suit both right-hand and left-
hand users.
WARNING: Always use the drill with the side handle properly
assembled.
1. Loosen the side handle.
– For right-hand users, slide the side handle clamp over the
collar behind the chuck, handle at the left.
– For left-hand users, slide the side handle clamp over the collar
behind the chuck, handle at the right.
2. Rotate the side handle to the desired position and tighten the
handle.
FIG. 2
FIG. 3
G
7
E
F