Ryobi OSS500 User Manual
OPERATOR'S MANUAL
Oscillating Spindle Sander
OSS500 - Double Insulated
Your new oscillating spindle sander has been engineered and manufactured to Ryobi's high standard for dependability,
ease of operation, and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual.
Thank you for buying a Ryobi oscillating spindle sander.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
■ Introduction ........................................................................................................................................................ 2
■ Rules for Safe Operation ................................................................................................................................3-5
■ Specifications .................................................................................................................................................... 6
■ Unpacking ..........................................................................................................................................................6
■ Features .........................................................................................................................................................7-8
■ Adjustments .................................................................................................................................................. 9-11
■ Operation ....................................................................................................................................................12-13
■ Maintenance ....................................................................................................................................................14
■ Parts, Ordering, and Service ........................................................................................................................... 16
INTRODUCTION
Your sander has many features for making sanding
operations more pleasant and enjoyable. Safety,
performance, and dependability have been given top
priority in the design of this tool making it easy to
maintain and operate.
WARNING:
Do not attempt to use this tool until you have read
thoroughly and understand completely the operator’s
manual. Pay close attention to the safety rules, including Dangers, Warnings, and Cautions. If you
use your sander properly and only for what it is
intended, you will enjoy years of safe, reliable service.
WEAR
YOUR
SAFETY
FORESIGHT IS BETTER
GLASSES
THAN NO SIGHT
Look for this symbol to point out important safety
precautions. It means attention!!! Your safety is involved.
The operation of any power tool can result in foreign objects being thrown into your eyes,
which can result in severe eye damage. Before beginning tool operation, always wear safety
goggles or safety glasses with side shields and a full face shield when needed. We
recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses
with side shields. Always wear eye protection which is marked to comply with ANSI Z87.1.
2
RULES FOR SAFE OPERATION
Safe operation of this power tool requires that you read
and understand this operator's manual and all labels
affixed to the tool. Safety is a combination of common
sense, staying alert, and knowing how your tool works.
READ ALL INSTRUCTIONS
■ KNOW YOUR POWER TOOL. Read the operator's
manual carefully. Learn the tool's applications and
limitations as well as the specific potential hazards
related to this tool.
■ KEEP THROAT PLATES IN PLACE and in working
order.
■ REMOVE WRENCH. Get in the habit of checking to
see that the wrench is removed from the spindle
before turning on the tool. Return the wrench, upper
spindle washer(s), and throat plates to the storage
area when not in use.
■ KEEP WORK AREA CLEAN. Cluttered work areas
and work benches invite accidents. DO NOT leave
tools or pieces of wood on the tool while it is in
operation.
■ DO NOT USE IN DANGEROUS ENVIRONMENTS.
Work in a well lit area. Do not use power tools near
gasoline or other flammable liquids. Do not expose
power tools to rain or damp or wet conditions.
■ KEEP BYSTANDERS AWAY. Keep bystanders,
children, and pets away while operating a power tool.
Distractions can cause you to lose control.
■ MAKE WORKSHOP CHILDPROOF with padlocks
and master switches or by removing starter keys.
■ DO NOT FORCE THE TOOL. It will do the job better
and more safely at the rate for which it was designed.
■ USE THE RIGHT TOOL FOR THE JOB. Do not force
the tool or attachment to do a job for which it was not
designed. Use it only the way it was intended.
■ USE THE PROPER EXTENSION CORD. Make sure
your extension cord is in good condition. Use only a
cord heavy enough to carry the current your product
will draw. An undersized cord will cause a drop in line
voltage resulting in loss of power and overheating. A
wire gage size (A.W.G.) of at least 16 is recommended for an extension cord 25 feet or less in
length. If in doubt, use the next heavier gage. The
smaller the gage number, the heavier the cord.
■ DO NOT ABUSE CORD. Never yank cord to disconnect it from receptacle. Keep cord from heat, oil, and
sharp edges.
■ INSPECT TOOL CORDS AND EXTENSION CORDS
PERIODICALLY and, if damaged, have them re-
paired by a qualified service technician at an authorized service center. Stay constantly aware of cord
location and keep it well away from the moving parts
of the tool.
■ USE OUTDOOR EXTENSION CORDS. When tool is
used outdoors, use only extension cords with approved ground connection that are intended for use
outdoors and so marked.
■ DRESS PROPERLY. Do not wear loose clothing,
gloves, neckties, rings, bracelets, or other jewelry
that can get caught and draw you into moving parts.
Nonslip footwear is recommended. Also wear protective hair covering to contain long hair.
■ ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS. Everyday eyeglasses have only impact-
resistant lenses, they are NOT safety glasses.
■ WEAR A DUST MASK to keep from inhaling fine
particles.
■ PROTECT YOUR HEARING. Wear hearing protec-
tion during extended periods of operation.
■ INSPECT WORK. Remove all nails from lumber
before sanding.
■ DIRECTION OF FEED. Feed the workpiece into the
sanding sleeve against the direction of the sanding
sleeve rotation only.
■ DO NOT OVERREACH. Keep proper footing and
balance at all times.
■ MAINTAIN TOOLS WITH CARE. Keep tools sharp
and clean for better and safer performance. Follow
instructions for lubricating and changing accessories.
■ DISCONNECT ALL TOOLS when not in use, before
servicing, or when changing attachments.
■ AVOID ACCIDENTAL STARTING. Be sure switch is
off when plugging in any tool.
■ USE RECOMMENDED ACCESSORIES. Using im-
proper accessories may risk injury.
■ MAINTAIN 1/16 in. (1.6 mm) OR LESS between
sanding drum and throat plate.
■ NEVER STAND ON TOOL. Serious injury could
occur if the tool is tipped or if moving parts are
unintentionally contacted.
■ CHECK DAMAGED PARTS. Check any previously
damaged parts for proper operation and performance.
Check alignment of moving parts, binding of moving
parts, breakage of parts, tool stability, mounting and
any other conditions that may affect its operation. A
damaged part must be properly repaired or replaced
by a qualified service technician at an authorized
service center to avoid risk of personal injury.
■ NEVER LEAVE TOOL RUNNING UNATTENDED.
TURN THE POWER OFF. Do not leave tool until it
comes to a complete stop.
■ FIRMLY CLAMP OR BOLT the tool to a work-
bench or table at approximately hip height.
■ KEEP HANDS AWAY FROM SANDING AREA. Keep
hands away from the sanding sleeve. Do not reach
underneath work or around sanding sleeve while
spindle is rotating.
3
RULES FOR SAFE OPERATION
■ DO NOT USE TOOL IF SWITCH DOES NOT TURN
IT ON AND OFF. Have defective switches replaced
by a qualified service technician at an authorized
service center.
■ KEEP TOOL DRY, CLEAN, AND FREE FROM OIL
AND GREASE. Always use a clean cloth when
cleaning. Never use brake fluids, gasoline, petroleum-based products, or any solvents to clean tool.
■ REPLACEMENT PARTS. All repairs, whether elec-
trical or mechanical, should be made at your nearest
authorized service center.
■ WHEN SERVICING, use only identical Ryobi replacement parts. Use of any other parts may create
a hazard or cause product damage.
■ NEVER USE THIS TOOL IN AN EXPLOSIVE ATMOSPHERE. Normal sparking of the motor could
ignite fumes.
■ POLARIZED PLUGS. To reduce the risk of electric
shock, this tool has a polarized plug (one blade is
wider than the other). This plug will fit in a polarized outlet only one way. If the plug does not fit
fully in the outlet, reverse the plug. If it still does
not fit, contact a qualified electrician to install the
proper outlet. Do not change the plug in any way.
■ NEVER USE THIS OR ANY POWER SANDER
FOR WET SANDING. Failure to comply can result
in electrical shock causing serious injury.
■ DO NOT OPERATE THIS TOOL WHILE UNDER
THE INFLUENCE OF DRUGS, ALCOHOL, OR
ANY MEDICATION.
■ STAY ALERT AND EXERCISE CONTROL. Watch
what you are doing and use common sense. Do not
operate tool when you are tired. Do not rush.
■ ALWAYS TURN OFF THE TOOL before disconnect-
ing it to avoid accidental starting when reconnecting
to power supply. NEVER leave the tool unattended
while connected to a power source.
■ SAVE THESE INSTRUCTIONS. Refer to them frequently and use them to instruct other users. If you
loan someone this tool, loan them these instructions
also.
WARNING:
Some dust created by power sanding, sawing,
grinding, drilling, and other construction activities
contains chemicals known to cause cancer, birth
defects or other reproductive harm. Some examples
of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement
and other masonry products, and
• arsenic and chromium from chemically treated lumber.
Your risk from these exposures varies, depending
on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well
ventilated area, and work with approved safety
equipment, such as those dust masks that are
specially designed to filter out microscopic particles.
4
RULES FOR SAFE OPERATION
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the
explanations with them, deserve your careful attention and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident
prevention measures.
SYMBOL MEANING
DANGER: Failure to obey a safety warning will result in serious injury to yourself or to others.
Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.
WARNING: Failure to obey a safety warning can result in serious injury to yourself or to others.
Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.
CAUTION: Failure to obey a safety warning may result in property damage or personal injury to
yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock
and personal injury.
WET CONDITIONS ALERT: Do not expose to rain or use in damp locations.
NOTE: Advises you of information or instructions vital to the operation or maintenance of the
equipment.
SAVE THESE INSTRUCTIONS
DOUBLE INSULATION
Double insulation is a concept in safety in electric power
tools, which eliminates the need for the usual three-wire
grounded power cord. All exposed metal parts are
isolated from the internal metal motor components with
protecting insulation. Double insulated tools do not need
to be grounded.
WARNING:
The double insulated system is intended to protect
the user from shock resulting from a break in the
tool’s internal wiring. Observe all normal safety precautions to avoid electrical shock.
Important: Servicing of a tool with double insulation
requires extreme care and knowledge of the system and
should be performed only by a qualified service
technician. For service, we suggest you return the tool to
your nearest authorized service center for repair. Always
use original factory replacement parts when servicing.
ELECTRICAL CONNECTION
Your tool has a precision built electric motor. It should
be connected to a power supply that is 120 volts, 60
Hz, AC only (normal household current). Do not
operate this tool on direct current (DC). A substantial
voltage drop will cause a loss of power and the motor will
overheat. If your tool does not operate when plugged
into an outlet, double-check the power supply.
5
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