5
English
■
Insert the drill bit.
■
Tighten the chuck jaws on the drill bit. To tighten,
grasp and hold the collar of the chuck with one hand,
while rotating the chuck body with your other hand.
NOTE:
Rotate the chuck body in the direction of the
arrow marked
LOCK
to tighten the chuck jaws.
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.
NOTE:
Do not use a wrench to tighten or loosen the
chuck jaws.
REMOVING BITS
See Figure 6.
■
Place the rotation selector in center position. This will
lock the switch trigger in the off position.
■
Loosen the chuck jaws from the drill bit.
■
To loosen the chuck jaws from the drill bit, grasp
and hold the collar of the chuck with one hand, while
rotating chuck body with your other hand.
NOTE:
Rotate chuck body in the direction of the arrow
marked
UNLOCK
to loosen chuck jaws.
■
Remove drill bit from chuck jaws.
DRILLING
See Figure 8.
A level is located on top of the motor housing to help
keep the drill bit level during use.
■
Check the 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.
■
Hold the drill firmly and place the bit at the point to be
drilled.
■
Depress the switch trigger to start the drill.
■
Move the drill bit into the workpiece, applying only
enough pressure to keep the bit cutting. Do not force
the drill or apply side pressure to elongate a hole. Let
the tool do the work.
WARNING:
Be prepared for binding at bit breakthrough.
When these situations occur, the drill has a
tendency to grab and kick in the opposite
direction 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 hard, smooth surfaces, use a center
punch to mark the desired hole location. This will
prevent the drill bit from slipping off-center as the hole
is started.
■
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 the workpiece or if the drill stalls,
stop the tool immediately. Remove the bit from the
workpiece and determine the reason for jamming.
NOTE:
This drill has an electric brake. When the switch
trigger is released, the chuck stops turning. When the
brake is functioning properly, sparks will be visible
through the vent slots on the housing. This is normal and
is the action of the brake.
WOOD DRILLING
For maximum performance, use high speed steel bits for
wood drilling.
■
Begin drilling at a very low speed to prevent the bit
from slipping off the starting point. Increase the speed
as the drill bit bites into the material.
■
When drilling through holes, place a block of wood
behind the workpiece to prevent ragged or splintered
edges on the back side of the hole.
METAL DRILLING
For maximum performance, use high speed steel bits for
metal or steel drilling.
■
Begin drilling at a very low speed to prevent the bit
from slipping off the starting point.
■
Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much
pressure will:
• Overheat the drill;
• Wear the bearings;
• Bend or burn bits;
• Produce off-center or irregular-shaped holes.
■
When drilling large holes in metal, start with a small
bit, then finish with a larger bit. Also, lubricate the bit
with oil to improve drilling action and increase bit life.
MAINTENANCE
WARNING
When servicing, use only identical Ryobi
replacement parts. Use of any other parts may
