Ryobi P423, Operator'S Manual

Page: 7 / 36

7 — English
FEATURES
PRODUCT SPECIFICATIONS
Wheel Capacity .....................................................4-1/2 in.
Rated Speed ....................................... 10,400 r/min. (RPM)
Spindle Thread ........................................ 5/8 in. x 11 UNC
Wheel.......................Grinding (Type 27) or Cutting (Type 1)
UNPACKING
This product requires assembly.

Carefully remove the tool and any accessories from the
box. All items listed in the Includes section must be
included at the time of purchase.
WARNING:
Items in this Assembly section are not assembled to
the product by the manufacturer and require customer
installation. Use of a product that may have been
improperly assembled could result in serious personal
injury.

If any parts are damaged or missing, please call
1-800-525-2579 for assistance. In Mexico, please call
01-800-843-1111.
WARNING:
If any parts are damaged or missing do not operate this
product until the parts are replaced. Use of this product
with damaged or missing parts could result in serious
personal injury.
WARNING:
Do not attempt to modify this product or create
accessories or attachments not recommended for use
with this product. Any such alteration or modification is
misuse and could result in a hazardous condition leading
to possible serious personal injury.
INSTALLING/REMOVING WHEEL GUARD
See Figures 1 - 3, page 12.
NOTE:
The cutting wheel guard and grinding wheel guard
install and remove the same way. The cutting wheel guard
is guarded on both sides of the cutting wheel.
ASSEMBLY
To install:
 Place the guard on the shoulder of the bearing cap by
aligning index arrows on guard and bearing cap. Press
down on guard until it is fully seated.

Depress the lever and rotate guard to the correct position.
Refer to
Positioning the Wheel Guard .
NOTE:
Be sure the raised ridge on the guard is seated in
the groove on the bearing cap.

Install disc flange, grinding or cutting wheel, and clamp
nut as described later in this section.
 Tighten clamp nut securely with the wrench provided.
To remove:
 Remove the disc flange, grinding or cutting wheel, and
clamp nut.

Depress the lever and rotate guard to align index arrows
on guard and bearing cap.
 Remove the guard.
INSTALLING/REMOVING GRINDING WHEEL
See Figure 1, page 12.
WARNING:
Thoroughly inspect a new grinding wheel before you
install it on the grinder.
• Tap lightly around the wheel using a wooden hammer.
• Listen carefully to the resulting sounds. Places with
fissures or cracks will result in a different sound.
Do not use a wheel containing fissures or cracks. When
you install a new grinding wheel, carry out a no load
revolution test of approximately one minute with the
grinding wheel facing a safe direction, i.e., away from
people or objects.