Ryobi R860012 Operator's Manual page 8

OPERATION
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 hidden 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 hammer drill.

Move the 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.
WARNING:
When drilling, be prepared for binding at bit break-
through. When these situations occur, drill has a
tendency to grab and kick opposite to the direc-
tion of rotation 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
bit from slipping off-center as the hole is started.

If the bit jams in the workpiece or if the hammer drill
stalls, stop the tool immediately. Remove the bit from
the workpiece and determine the reason for jamming.
NOTE: This hammer 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.
NOTE: If operation creates considerable dust, frequent
vacuuming of the work area is recommended.
WOOD AND METAL DRILLING
For maximum performance, use high speed steel bits for
wood or metal drilling. Select drilling mode. Begin drilling
at a very low speed to prevent the bit from slipping off the
starting point.
NOTE: MAINTENANCE INFORMATION BEGINS ON PAGE 10 AFTER FRENCH AND
SPANISH LANGUAGE SECTIONS. ILLUSTRATIONS START ON PAGE 11.
This product has a 90-Day Satisfaction Guarantee Policy,
please go to powertools.ridgid.com or call (toll free) 1-866-539-1710.
as well as a Three-year Limited Warranty.
For Warranty and Policy details,
8 - English
Wood Drilling
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 and Steel Drilling

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.

Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much pressure
will:
• Overheat the hammer drill;
• Wear the bearings;
• Bend or burn bits; and
• Produce off-center or irregular-shaped holes.

When drilling large holes in metal, start with a small bit,
then finish with a larger bit.
MASONRY DRILLING
For maximum performance, use carbide-tipped masonry
impact bits or designated hammer drill bits when drilling
holes in brick, tile, concrete, etc.

Apply light pressure at medium speed for best results in
brick.

Apply additional pressure for hard materials such as
concrete.

When drilling holes in tile, practice on a scrap piece to
determine the best speed and pressure. Begin drilling at
a very low speed to prevent the bit from slipping off the
starting point.