Ryobi D620H Manual Del Operador página 8

TO INSTALL BITS
See Figures 5 - 6, page 12.
 Unplug the drill.
 Insert the chuck key and twist counterclockwise.
 Open or close the chuck jaws to a point where the open-
ing is slightly larger than the bit size you intend to use.
Also, raise the front of the drill slightly to keep the bit from
falling out of the chuck jaws.
 Insert the drill bit.
WARNING:
Make sure to insert the drill bit straight into the chuck
jaws. Do not insert the drill bit into the chuck jaws at
an angle then tighten, as shown in figure 7. This could
cause the drill bit to be thrown from the drill, resulting in
possible serious personal injury or damage to the chuck.
 Tighten the chuck jaws securely on the drill bit, using the
chuck key provided.
 Remove the chuck key.
TO REMOVE BITS
See Figure 5, page 12.
 Unplug the drill.
 Loosen the chuck jaws using the chuck key provided.
 Remove the drill bit.
 Remove the chuck key.
USING THE AUXILIARY HANDLE ASSEMBLY
See Figure 7, page 12.
The drill is equipped with an auxiliary handle assembly. For
ease of operation, use the handle with either the left or right
hand. The handle can be rotated 360°.
To adjust the auxiliary handle assembly,
 Loosen the handle assembly by turning the handle coun-
terclockwise.
 Rotate the auxiliary handle assembly to the desired oper-
ating position.
 Securely tighten by turning the auxiliary handle clockwise.
Be sure the auxiliary handle is securely tightened against
the depth stop clamp. This secures the depth stop rod at
the desired depth of cut. It also secures the auxiliary han-
dle.
NOTE: For convenience and ease of starting threads, the
hex nut has been trapped inside the molded slot in the aux-
iliary handle.
The depth stop rod helps control the depth of drilled holes.
NOTE: When properly installed, the teeth on the depth stop
rod should be aligned with the teeth indicator on the depth
stop clamp.
OPERATION
Adjust the depth stop rod so that the drill bit extends
beyond the end of the rod to the required drilling depth.
When drilling holes with the depth stop rod installed, the
desired hole depth has been reached when the end of the
rod comes in contact with the surface of the workpiece.
SELECTING HAMMER MODE OR DRILLING
MODE
See Figure 8, page 12.
To adjust for type of drilling, slide the selector on top of the
motor housing to hammer mode or drilling mode. The ham-
mer mode symbol is on the right and the drill bit symbol is
on the left.
NOTE: The hammer drill has not been designed for reverse
hammering.
Use carbide-tipped bits and select hammer mode when
drilling in hard materials such as brick, tile, concrete, etc.
Select normal drill mode when drilling with twist drills, hole
saws, etc., in soft materials.
DRILLING/DRIVING SCREWS
See Figure 9, page 12.
 Depress and release the switch trigger to be sure the drill
is in the OFF position before connecting it to a power
supply.
 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.
 Plug the drill into power supply.
 Hold the drill firmly and place the bit at the point to be
drilled, or where the screw is to be driven.
WARNING:
Do not drive a screw where there is likely to be hidden
wiring behind the surface. Contact with a "live" wire will
make exposed metal parts of the tool "live" and possibly
shock the operator. If you must drive a screw where hid-
den wire may be present, always hold tool by insulated
gripping surfaces (handle) when performing the operation
to prevent a shock to the operator.
 Depress the switch trigger to start the drill.
 Move the drill bit into the workpiece, applying only enough
pressure to keep the bit cutting or driving the screw. Do
not force the drill or apply side pressure to elongate a
hole. Let the tool do the work.
8 — English