Ryobi P4221 - Manual (Page 8)

8 — English
ASSEMBLY
OPERATION
WARNING:
Do not allow familiarity with this product to make you
careless. Remember that a careless fraction of a second
is sufficient to inflict serious injury.
WARNING:
Always remove battery pack from the tool when you are
assembling parts, making adjustments, cleaning, or when
not in use. Removing battery pack will prevent accidental
starting that could cause serious personal injury.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1, along with hearing protection.
Failure to do so could result in objects being thrown into
your eyes and other possible serious injuries.
WARNING:
Do not use any attachments or accessories not recom-
mended by the manufacturer of this product. The use of
attachments or accessories not recommended can result
in serious personal injury.
 Depress the spindle lock button and rotate the clamp nut
until the spindle locks.
NOTE: To prevent damage to the spindle or spindle lock,
always allow motor to come to a complete stop before
engaging spindle lock.
 Loosen and remove the clamp nut from the spindle. Do
not remove the disc flange.
 Make sure the flats on the bottom of the disc flange are
engaged with the flats on the spindle.
 Place the grinding wheel over the spindle.
WARNING:
Always install a grinding wheel with the depressed center
against the disc flange. Failure to do so will cause the
grinding wheel to crack when tightening the clamp nut.
This could result in serious personal injury because of
loose particles breaking off and being thrown from the
grinder. Do not overtighten.
 Thread the clamp nut on the spindle with the flat side of
the nut facing up.
 Fit the raised, small diameter portion of the clamp nut
into the hole in the wheel and finger tighten.
 Depress the spindle lock button and rotate the wheel
clockwise until the spindle locks in position.
 Tighten the clamp nut securely with the wrench provided.
Do not overtighten.
INSTALLING THE SIDE HANDLE
See Figure 2, page 12.
WARNING:
The side handle must always be used to help prevent
loss of control and possible serious injury.
The side handle can be installed on the top, left, or right side
of the grinder, depending on operator preference.

Insert the side handle into the desired operating position.
 Turn the side handle clockwise to securely tighten.
APPLICATIONS
You may use this product for the purpose listed below:

Grinding metals
 Sanding wood or metal surfaces
WARNING:
Battery products are always in operating condition.
Therefore, the switch should always be locked when not
in use or carrying at your side.
INSTALLING/REMOVING BATTERY PACK
See Figure 3, page 12.
To install:

Insert the battery pack.
 Make sure the latches on each side of the battery pack
snap in place and that battery pack is secured in the
product before beginning operation.
To remove:
 Depress the latches on each side of the battery pack.