Ryobi SP450 - Manual (Page 9)

9 – English
OPERATION
clogged with polishing film, wash in lukewarm water with
a mild detergent. Allow bonnets to dry thoroughly before
reuse. Polish with a long sweeping motion, back and forth,
advancing along the surface to be polished. Do not hold the
tool in one spot or use a circular or spiral pattern. This will
cause swirls in the finish.
Spread a light coat of polish or wax over a small area.
Polish with the tool according to the manufacturer’s
instructions printed on the label of the polish or wax
container.
NOTE: Some polishes should be buffed while damp while
others must be allowed to dry; therefore, always check the
manufacturer’s label.
Tilt the tool so that the polishing bonnet is at a slight angle
to the work surface. Always start polishing at the top or
highest point and work down. This will prevent light dust
or polish film from being thrown upon completed section.
It also eliminates pulling the tool’s power cord over
sections already polished.
Surfaces that have an old film of wax or polish, or that
have not been polished or waxed for an extended
period of time, may require a second application. This is
especially true on oxidized surfaces. Heavily oxidized
surfaces should be cleaned with a commercial paste or liquid
cleaner before polishing or waxing.
WARNING:
Check polishing bonnets before each use. Make sure
they are clean and free from any loose particles or foreign
objects that may be embedded in the bonnet. Failure to
do so could cause these particles or objects to be thrown
from the tool resulting in possible serious injury.
INSTALLING OPTIONAL SANDING DISC
See Figure 5, page 11.
NOTE: A sanding disc is not supplied.

Unplug the sander/polisher.
 Position the tool as shown and align the spindle lock hole
with the two half-circle notches in motor housing. Lock
spindle by inserting the pin provided through spindle lock
hole and trapping it in half circle notches. This will prevent
spindle from rotating.
 Loosen spanner nut with the spanner wrench provided
by turning counterclockwise.
 Remove spanner nut.
 Center the sanding disc over the rubber disc and start
spanner nut onto threaded spindle in a clockwise
direction.
 Securely tighten spanner nut with the spanner wrench
provided.
 Remove pin securing spindle.
To remove:

Unplug the sander/polisher.
 Position the tool as shown and insert pin to secure
spindle.
 Loosen spanner nut with the spanner wrench provided
by turning counterclockwise.
 Remove spanner nut.
 Remove the sanding disc.
 Reinstall spanner nut and tighten securely.
 Remove pin securing spindle.
SANDING
See Figure 6, page 12.
Clamp or otherwise secure the work to prevent it from
moving under the sander/polisher. Secure small workpieces
in a vise or use clamps to secure them to a workbench.
WARNING:
Unsecured work could be thrown towards the operator
causing injury.
Hold the tool in front and away from you, keeping it clear
of the workpiece. Start the tool by depressing the switch
trigger and letting the motor build to its maximum speed.
Gradually lower sander/polisher to the workpiece at a slight
(5° to 8°) angle.
WARNING:
To prevent loss of control and possible serious personal
injury, always operate the tool with both hands, keeping
one hand on the side handle.
Do not attempt to hold the sanding disc flat on the
workpiece. Always keep the tool in motion moving over
the work, allowing it to operate freely without unneces-
sary pressure. The weight of the unit supplies adequate
pressure, so let the sanding disc and sander do the work.
Applying additional pressure only slows the motor, rapidly
wears sanding discs, and greatly reduces sander speed.
Excessive pressure will overload the motor, causing
possible damage from motor overheating, which can result
in inferior work. Any finish or resin on wood may soften from
the frictional heat.
Do not sand too long in one spot. This will cause uneven
sanding and gouging of the work.
Upon completion of a sanding operation, lift tool away from
work surface before turning off.
WARNING:
Sanding disc must come to a complete stop before set-
ting tool down on workbench. Failure to do so can cause
the tool to be thrown from workbench because of sanding
disc rotation. This could result in damage to the tool or
possible serious injury to the operator.