14
15
WARNING:
When servicing, use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.
OPERATION
DRILLING
See Figure 11.
n
Depress and release the switch trigger to make sure the
drill is in the OFF position before connecting it to a power
supply.
n
Check the rotation lever for the correct setting. Refer to
“CHANGING THE ROTATION” earlier in this manual.
n
Secure the material to be drilled in a vise or with clamps
to keep it from turning as the drill bit rotates.
n
Plug the hammer drill into a power supply.
n
Hold the drill firmly and place the bit at the point to be
drilled.
n
Depress the switch trigger to start the drill.
n
Move the drill bit into the workpiece, applying only enough
pressure to keep the bit cutting.
NOTE:
Do not force the drill or apply side pressure to
elongate a hole. Let your drill and bit 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 you are not
prepared, this loss of control could result in possible
serious injury.
HELPFUL TIPS
n
When drilling hard, smooth surfaces, use a center punch
to mark the desired hole location. This measure will pre-
vent the drill bit from slipping off center as you start the
hole. However, the variable speed feature allows you to
start holes without center punching. To accomplish this,
operate the drill at a low speed until you start the hole.
Fig. 11
n
When drilling metals, use a light oil on the drill to keep
it from overheating. The oil will prolong the life of the bit
and increase the drilling action.
n
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.
MAINTENANCE
