OPERATOR'S MANUAL
Random Orbit Sander
RS2418
DOUBLE INSULATED
Your new tool 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 before using this
product.
Thank you for buying a Ryobi tool.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
Introduction ..................................................................................................................................................................... 2
General Safety Rules .................................................................................................................................................. 3-4
Specific Safety Rules ......................................................................................................................................................4
Symbols ...........................................................................................................................................................................5
Electrical .......................................................................................................................................................................... 6
Features ..........................................................................................................................................................................7
Unpacking....................................................................................................................................................................... 7
Assembly ................................................................................................................................................................... 8-10
Operation ...................................................................................................................................................................... 11
Maintenance ................................................................................................................................................................. 12
Accessories .................................................................................................................................................................. 13
Parts Ordering / Service ............................................................................................................................................... 14
INTRODUCTION
This tool has many features for making its use more
pleasant and enjoyable. Safety, performance, and
dependability have been given top priority in the design
of this product making it easy to maintain and operate.
WARNING:
Do not attempt to use this product until you read thoroughly and understand completely the operator's manual.
Pay close attention to the safety rules, including Dangers,
Warnings, and Cautions. If you use this tool properly and
only for what it is intended, you will enjoy years of safe,
reliable service.
WARNING:
The operation of any sander can result in foreign objects being thrown into your eyes, which can
result in severe eye damage. Before beginning power 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.
Look for this symbol to point out important safety precautions.
It means attention!!! Your safety is involved.
Page 2
GENERAL SAFETY RULES
WARNING:
Read and understand all instructions. Failure to fol-
low all instructions listed below, may result in electric
shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
WORK AREA
Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases,
or dust. Power tools create sparks which may ignite the
dust or fumes.
Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
ELECTRICAL SAFETY
Double insulated tools are equipped with 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 a polarized outlet. Do not change the plug in any
way. Double insulation eliminates the need for the
three-wire grounded power cord and grounded power
supply system.
Avoid body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerators. There is
an increased risk of electric shock if your body is grounded.
Don’t expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric shock.
Do not abuse the cord. Never use the cord to carry
the tools or pull the plug from an outlet. Keep cord
away from heat, oil, sharp edges, or moving parts.
Replace damaged cords immediately. Damaged cords
increase the risk of electric shock.
When operating a power tool outside, use an outdoor
extension cord marked “W-A” or “W”. These cords are
rated for outdoor use and reduce the risk of electric shock.
PERSONAL SAFETY
Stay alert, watch what you are doing and use com-
mon sense when operating a power tool. Do not use
tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while oper-
ating power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jew-
elry. Contain long hair. Keep your hair, clothing, and
gloves away from moving parts. Loose clothes, jew-
elry, or long hair can be caught in moving parts.
Avoid accidental starting. Be sure switch is off be-
fore plugging in. Carrying tools with your finger on the
switch or plugging in tools that have the switch on invites
accidents.
Remove adjusting keys or wrenches before turning
the tool on. A wrench or a key that is left attached to a
rotating part of the tool may result in personal injury.
Do not overreach. Keep proper footing and balance
at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection.
Dust mask, nonskid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
Do not wear loose clothing or jewelry. Contain long
hair. Loose clothes, jewelry, or long hair can be drawn
into air vents.
Do not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
TOOL USE AND CARE
Use clamps or other practical way to secure and sup-
port the workpiece to a stable platform. Holding the
work by hand or against your body is unstable and may
lead to loss of control.
Do not force tool. Use the correct tool for your appli-
cation. The correct tool will do the job better and safer at
the rate for which it is designed.
Do not use tool if switch does not turn it on or off.
Any tool that cannot be controlled with the switch is dangerous and must be repaired.
Disconnect the plug from power source before mak-
ing any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce
the risk of starting the tool accidentally.
Store idle tools out of the reach of children and other
untrained persons. Tools are dangerous in the hands of
untrained users.
Maintain tools with care. Keep cutting tools sharp and
clean. Properly maintained tools with sharp cutting edges
are less likely to bind and are easier to control.
Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that may
affect the tool’s operation. If damaged, have the tool
serviced before using. Many accidents are caused by
poorly maintained tools.
Use only accessories that are recommended by the
manufacturer for your model. Accessories that may be
suitable for one tool, may become hazardous when used
on another tool.
Keep the tool and its handle 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 strong solvents to clean your tool. Following
this rule will reduce the risk of loss of control and deterioration of the enclosure plastic.
Page 3
GENERAL SAFETY RULES
SERVICE
Tool service must be performed only by qualified re-
pair personnel. Service or maintenance performed by
unqualified personnel may result in a risk of injury.
When servicing a tool, use only identical replacement
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to
follow Maintenance Instructions may create a risk of shock
or injury.
SPECIFIC SAFETY RULES
Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact
hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the
operator.
Additional Rules For Safe Operation
Know your power tool. Read operator’s manual
carefully. Learn its applications and limitations, as
well as the specific potential hazards related to this
tool. Following this rule will reduce the risk of electric
shock, fire, or serious injury.
Always wear safety glasses. Everyday eyeglasses
have only impact-resistant lenses; they are NOT
safety glasses. Following this rule will reduce the risk
of serious personal injury.
Protect your lungs. Wear a face or dust mask if the
operation is dusty. Following this rule will reduce the
risk of serious personal injury.
Protect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will
reduce the risk of serious personal injury.
Inspect tool cords periodically and, if damaged, have
repaired at your nearest authorized service center.
Constantly stay aware of cord location. Following this
rule will reduce the risk of electric shock or fire.
Check damaged parts. Before further use of the tool,
a guard or other part that is damaged should be
carefully checked to determine that it will operate
properly and perform its intended function. Check
for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other
conditions that may affect its operation. A guard or
other part that is damaged should be properly
repaired or replaced by an authorized service center.
Following this rule will reduce the risk of shock, fire, or
serious injury.
Do not abuse cord. Never carry the tool by the cord
or yank it to disconnect it from the receptacle. Keep
cord away from heat, oil, and sharp edges. Following
this rule will reduce the risk of electric shock or fire.
Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one
heavy enough to carry the current your product will
draw. A wire gage size (A.W.G.) of at least 16 is
recommended for an extension cord 100 feet or less
in length. A cord exceeding 100 feet is not
recommended. If in doubt, use the next heavier gage.
The smaller the gage number, the heavier the cord.
An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating.
Inspect for and remove all nails from lumber before
sanding. Following this rule will reduce the risk of serious
personal injury.
Drugs, alcohol, medication. Do not operate tool while
under the influence of drugs, alcohol, or any
medication. Following this rule will reduce the risk of
electric shock, fire, or serious personal injury.
Save these instructions. Refer to them frequently and
use them to instruct others who may use this tool. 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 chemicallytreated 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.
Page 4
SYMBOLS
Important: Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL NAME DESIGNATION/EXPLANATION
VVolts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
WWatt Power
min Minutes Time
Alternating Current Type of current
---
n
o
.../min Per Minute Revolutions, strokes, surface speed, orbits etc., per minute
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
Direct Current Type or a characteristic of current
No Load Speed Rotational speed, at no load
Class II Construction Double-insulated construction
Safety Alert Precautions that involve your safety
Read The Operator’s Manual
Eye Protection
Wet Conditions Alert Do not expose to rain or use in damp locations.
To reduce the risk of injury, the user must read and understand
the operator’s manual before using this product.
Always wear safety goggles or safety glasses with side shields
and a full face shield when operating this product.
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will result in death or
serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in death or
serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices that may cause property damage.
Note: Advises you of additional information concerning the operation or maintenance of the equipment.
Page 5
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