Ryobi R18CS-0 User manual

ORIGINAL INSTRUCTIONS
Cordless Circular Saw
R18CS

Important!
It is essential that you read the instructions in this manual before assembling,
operating and maintaining the product.
Subject to technical modifications.

Safety
1
Safety, performance, and dependability have been given
top priority in the design of your cordless circular saw.
INTENDED USE
The circular saw is intended to be used only by adults who
have read and understood the instructions and warnings
in this manual and can be considered responsible for their
actions.
The saw is designed for rip- and cross-cutting of wood or
similar materials up to a maximum depth of 54 mm. It can
make straight or bevelled cuts between 0 and 45 degrees.
It is to be used with the base of the tool in contact with
the workpiece. It should only be used in a dry, well lit
and well ventilated area. The circular saw is designed for
handheld use. It is not to be mounted onto a workbench
unless specific instructions about how to do this are given
by the manufacturer of the saw. Do not use for cutting
metal or masonry. Do not use the product in any way other
than those stated for intended use. Use of the product
for operations different from intended could result in a
hazardous situation.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING
Read all safety warnings, instructions, illustrations
and specifications provided with this power tool.
Failure to follow all instructions listed below may
result in electric shock, fire and/or serious injury.
WARNING Read all safety warnings, instructions,
illustrations and specifications provided with this
power tool. Failure to follow all instructions listed below
may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool’’ in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
■Keep work area clean and well lit. Cluttered or 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 children and bystanders away while operating
a power tool. Distractions can cause you to lose
control.
Electrical safety
■Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed(grounded) power tools.
Unmodified plugs and matching outlets will reduce risk
of electric shock.
■Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
■Do not 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 for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electric shock.
■When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric
shock.
■If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
Personal safety
■Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under the
influence of drugs, alcohol or medication. A moment
of inattention while operating power tools may result in
serious personal injury.
■Use personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat or hearing
protection used for appropriate conditions will reduce
personal injuries.
■Prevent unintentional starting. Ensure the switch
is in the off-position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising power tools that have the switch
on invites accidents.
■Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to
a rotating part of the power tool may result in personal
injury.
■Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power
tool in unexpected situations.
■Dress properly. Do not wear loose clothing or
jewellery. Keep your hair and clothing away from
moving parts. Loose clothes, jewellery or long hair can
be caught in moving parts.
■If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection
can reduce dust-related hazards.
■Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of a second.
Power tool use and care
■Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
■Do not use the power tool if the switch does not turn
it on and off. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.

Safety
2
■Disconnect the plug from the power source and/
or remove the battery pack, if detachable, from
the power tool before making any adjustments,
changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting
the power tool accidentally.
■Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
■Maintain power tools and accessories. Check for
misalignment or binding of moving parts, breakage
of parts and any other condition that may affect the
power tool’s operation. If damaged, have the power
tool repaired before use. Many accidents are caused
by poorly maintained power tools.
■Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
■Use the power tool, accessories and tool bits etc.
in accordance with these instructions, taking into
account the working conditions and the work to
be performed. Use of the power tool for operations
different from those intended could result in a
hazardous situation.
■Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
Battery tool use and care
■Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another battery pack.
■Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire.
■When battery pack is not in use, keep it away from
other metal objects, like paper clips, coins, keys,
nails, screws or other small metal objects, that can
make a connection from one terminal to another.
Shorting the battery terminals together may cause
burns or a fire.
■Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation or
burns.
■Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or
risk of injury.
■Do not expose a battery pack or tool to fire
or excessive temperature. Exposure to fire or
temperature above 130°C may cause explosion.
■Follow all charging instructions and do not charge
the battery pack or tool outside the temperature
range specified in the instructions. Charging
improperly or at temperatures outside the specified
range may damage the battery and increase the risk
of fire.
Service
■Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the power tool is
maintained.
■Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized service providers.
CIRCULAR SAW SAFETY WARNINGS
CUTTING PROCEDURES
DANGER
Keep hands away from cutting area and the blade.
Keep your second hand on auxiliary handle, or
motor housing. If both hands are holding the saw, they
cannot be cut by the blade.
■Do not reach underneath the workpiece. The guard
cannot protect you from the blade below the workpiece.
■Adjust the cutting depth to the thickness of the
workpiece. Less than a full tooth of the blade teeth
should be visible below the workpiece.
■Never hold the workpiece being cut in your hands
or across your leg. Secure the workpiece to a stable
platform. It is important to support the work properly
to minimise body exposure, blade binding, or loss of
control.
■Hold the power tool by insulated gripping surfaces,
when performing an operation where the cutting
tool may contact hidden wiring. Contact with a “live”
wire will also make exposed metal parts of the power
tool “live” and could give the operator an electric shock.
■When ripping, always use a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
■Always use blades with correct size and shape
(diamond versus round) of arbour holes. Blades that
do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.
■Never use damaged or incorrect blade washers
or bolt. The blade washers and bolt were specially
designed for your saw, for optimum performance and
safety of operation.
KICKBACK CAUSES AND RELATED WARNINGS:
■kickback is a sudden reaction to a pinched, jammed or
misaligned saw blade, causing an uncontrolled saw to
lift up and out of the workpiece toward the operator;
■when the blade is pinched or jammed tightly by the kerf
closing down, the blade stalls and the motor reaction
drives the unit rapidly back toward the operator;
■if the blade becomes twisted or misaligned in the cut,
the teeth at the back edge of the blade can dig into the
top surface of the wood causing the blade to climb out

Safety
3
of the kerf and jump back toward the operator.
Kickback is the result of saw misuse and/or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below.
■Maintain a firm grip with both hands on the saw
and position your arms to resist kickback forces.
Position your body to either side of the blade, but
not in line with the blade. Kickback could cause the
saw to jump backwards, but kickback forces can be
controlled by the operator, if proper precautions are
taken.
■When blade is binding, or when interrupting a cut
for any reason, release the trigger and hold the saw
motionless in the material until the blade comes
to a complete stop. Never attempt to remove the
saw from the work or pull the saw backward while
the blade is in motion or kickback may occur.
Investigate and take corrective actions to eliminate the
cause of blade binding.
■When restarting a saw in the workpiece, centre the
saw blade in the kerf and check that saw teeth are
not engaged into the material. If a saw blade binds,
it may walk up or kickback from the workpiece as the
saw is restarted.
■Support large panels to minimise the risk of blade
pinching and kickback. Large panels tend to sag
under their own weight. Supports must be placed under
the panel on both sides, near the line of cut and near
the edge of the panel.
■Do not use dull or damaged blades. Unsharpened
or improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
■Blade depth and bevel adjusting locking levers
must be tight and secure before making cut. If blade
adjustment shifts while cutting, it may cause binding
and kickback.
■Use extra caution when sawing into existing walls
or other blind areas. The protruding blade may cut
objects that can cause kickback.
LOWER GUARD FUNCTION
■Check lower guard for proper closing before each
use. Do not operate the saw if lower guard does not
move freely and close instantly. Never clamp or tie
the lower guard into the open position. If the saw is
accidentally dropped, lower guard may be bent. Raise
the lower guard with the retracting handle and make
sure it moves freely and does not touch the blade or any
other part, in all angles and depths of cut.
■Check the operation of the lower guard spring. If
the guard and the spring are not operating properly,
they must be serviced before use. Lower guard may
operate sluggishly due to damaged parts, gummy
deposits, or a build-up of debris.
■Lower guard may be retracted manually only for
special cuts such as “plunge cuts” and “compound
cuts”. Raise lower guard by retracting handle and
as soon as blade enters the material, the lower
guard must be released. For all other sawing, the
lower guard should operate automatically.
■Always observe that the lower guard is covering the
blade before placing saw down on bench or floor.
An unprotected, coasting blade will cause the saw to
walk backwards, cutting whatever is in its path. Be
aware of the time it takes for the blade to stop after
switch is released.
ADDITIONAL SAFETY WARNINGS
■The dust produced when using the product may be
harmful to your health, inflammable, or explosive. Do
not inhale the dust. Use a dust extraction system,
and wear a suitable dust protection mask. Remove
deposited dust thoroughly, e.g., with a brush and
vacuum cleaner.
■Do not use any abrasive wheels.
■Use only blades specified in this manual, complying
with EN 847-1.
■Avoid overheating the blade tips. Do not use dull or
damaged blades. Do not force the tool.
■Do not use blades of larger or smaller diameter than
recommended.
■Wear ear protection.
■Clamp workpiece with a clamping device. Unclamped
workpieces can cause severe injury and damage.
■Thoroughly check the material to be cut, particularly
when using recycled wood, for foreign objects such as
nails, screws, and staples. If nails, screws, staples or
similar items contact the blade whilst cutting, the saw
will be damaged and severe injury to the operator or
others may occur.
■Do not touch the saw blade immediately after sawing.
The saw blade gets hot during sawing.
■Use only blade diameter(s) in accordance with the
markings.
■Identify the correct saw blade to be used for the material
to be cut.
■Use only saw blades that are marked with a speed equal
or higher than the speed marked on the tool.
■Wear a dust mask.
■Ambient temperature range for tool during operation is
between 0°C and 40°C.
■Ambient temperature range for tool storage is between
0°C and 40°C.
■The recommended ambient temperature range for the
charging system during charging is between 10°C and
38°C.
ADDITIONAL BATTERY SAFETY WARNINGS
WARNING
To reduce the risk of fire, personal injury, and product
damage due to a short circuit, never immerse your
tool, battery pack or charger in fluid or allow a fluid to
flow inside them. Corrosive or conductive fluids, such
as seawater, certain industrial chemicals, and bleach
or bleach-containing products, etc., can cause a short
circuit.
■Ambient temperature range for battery during use is
between 0°C and 40°C.
■Ambient temperature range for battery storage is

Safety
4
between 0°C and 20°C.
TRANSPORTING LITHIUM BATTERIES
Transport the battery in accordance with local and national
provisions and regulations.
Follow all special requirements on packaging and labelling
when transporting batteries by a third party. Ensure that
no batteries can come in contact with other batteries
or conductive materials while in transport by protecting
exposed connectors with insulating, non-conductive caps
or tape. Do not transport batteries that are cracked or
leaking. Check with the forwarding company for further
advice.
RESIDUAL RISKS
Even when the product is used as prescribed, it is still
impossible to completely eliminate certain residual risk
factors. The following hazards may arise and the operator
should pay special attention to avoid the following:
■Injury caused by kickback
–Read and understand the information in this manual.
■Injury caused by vibration
–Limit exposure. See Risk Reduction.
■Injury caused by dust
–Wear eye protection at all times. Wear appropriate
dust mask with suitable filters that can protect
against particles from the material being worked on.
Do not eat, drink, or smoke in the work area. Ensure
adequate ventilation.
■Electric shock
–The blade may contact hidden wiring causing
parts of the product to become live. Always hold
the product by the designated handles and take
care when blind-cutting into walls and floors where
cables may be hidden.
NOTE: When working on walls, ceilings, or floors, take
care to avoid electric cables and gas or water pipes.
■Injury from contact with the cutting blade
–The blades are sharp and will become hot during
use. Wear gloves when changing blades. Keep
hands away from the cutting area at all times. Never
hold workpiece being cut in your hands or across
your leg. Clamp the work piece whenever possible.
RISK REDUCTION
It has been reported that vibrations from handheld tools
may contribute to a condition called Raynaud’s Syndrome
in certain individuals. Symptoms may include tingling,
numbness, and blanching of the fingers, usually apparent
upon exposure to cold. Hereditary factors, exposure to
cold and dampness, diet, smoking, and work practices
are all thought to contribute to the development of these
symptoms. There are measures that can be taken by the
operator to possibly reduce the effects of vibration:
■Keep your body warm in cold weather. When operating
the product, wear gloves to keep the hands and wrists
warm. It is reported that cold weather is a major factor
contributing to Raynaud’s Syndrome.
■After each period of operation, exercise to increase
blood circulation.
■Take frequent work breaks. Limit the amount of
exposure per day.
If you experience any of the symptoms of this condition,
immediately discontinue use and see your doctor about
these symptoms.
WARNING
Injuries may be caused or aggravated by prolonged use
of a tool. When using any tool for prolonged periods,
ensure you take regular breaks.
KNOW YOUR PRODUCT
See page 6.
1. Edge guide knob
2. Bevel adjustment knob
3. Spindle lock button
4. Front handle, insulated gripping surface
5. Lock-off button
6. Switch trigger
7. Battery port
8. Dust Pipe joint
9. Dust port
10. Inner flange
11. Outer flange
12. Blade Screw
13. Hex key
14. Depth adjustment lock lever
15. Blade
16. Handle, insulated gripping surface
MAINTENANCE
WARNING
The product should never be connected to a power
supply when assembling parts, making adjustments,
cleaning, performing maintenance, or when the product
is not in use. Disconnecting the product from the power
supply will prevent accidental starting that could cause
serious injury.
WARNING
When servicing, use only original manufacturer’s
replacement parts, accessories and attachments. Use of
any other parts may create a hazard or cause product
damage.
■Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to various types of commercial
solvents and may be damaged by their use. Use clean
cloths to remove dirt, carbon dust, etc.
WARNING
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.

Safety
5
WARNING
For greater safety and reliability, all repairs should be
performed by an authorised service centre.
ENVIRONMENTAL PROTECTION
Recycle raw materials instead of disposing
of as waste. The machine, accessories
and packaging should be sorted for
environmental-friendly recycling.
SYMBOLS
Safety alert
No-load speed
Blade diameter
CE conformity
EurAsian Conformity Mark
Ukrainian mark of conformity
Please read the instructions carefully
before starting the machine.
Do not cut metals
Wood
Width of cut
Blade teeth
Wear eye protection
Danger! Sharp blade
Do not expose to rain
Waste electrical products should not
be disposed of with household waste.
Please recycle where facilities exist.
Check with your local authority or
retailer for recycling advice.

6
Know your product
4
3
1
2
5
6
8
9
10 11
12
14
13
15
7
16

7

8
Getting started
1
3
2

Getting started
3
4
3
3
6
4
3
5s
3s

9
Getting started
5

10

Operation
11
40
45
10 - 52 mm10 - 52 mm
1
2
3

Operation
12
3
5s
3s 3
2
3
1
= 0˚
≠ 0˚
1
2
3

Operation
13
3
5s
3s
4
0˚ - 56˚
2
3
1
3
1
2

Maintenance
14
4
3
3
1
2
20190122v6

15
Maintenance
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3

PRODUCT SPECIFICATIONS
Cordless Circular Saw
Model
R18CS
Voltage 18 V
Blade diameter 165 mm
Blade arbor 16 mm
Cutting capacity at 0º 52 mm
Cutting capacity at 45º 36 mm
No-load speed 4,700 min-1
Blade - width of cut 1.6 mm
Blade teeth 24 T
Blade thickness 1.0 mm
Weight
(According to EPTA procedure 01/2014)
2.7 kg (1.5 Ah) –
3.5 kg (9.0 Ah)
Weight - not incl. battery pack 2.4 kg
Measured sound values determined according to EN 62841:
A-weighted sound pressure level LpA = 89.5 dB(A)
Uncertainty K 3 dB(A)
A-weighted sound power level LWA = 100.5 dB(A)
Uncertainty K 3 dB(A)
Wear ear protectors.
Weighted root mean
The vibration total values (triaxial vector sum) determined
according to EN 62841 :
Cutting wood ah,W ≤2.5 m/s
2
Uncertainty K 1.5 m/s
2
BATTERY AND CHARGER
Model Compatible battery
pack (not included)
Compatible charger
(not included)
Lithium-ion
RB18L13
RB18L15
RB18L20
RB18L25
RB18L30
RB18L40
RB18L50
RB18L90
BCL14181H
BCL14183H
RC18150
RC18627
RC18115
RC18120
RC18118C
VIBRATION LEVEL
WARNING
The vibration emission level given in this information sheet has been measured in accordance with a standardised test
given in EN 62841 and may be used to compare one tool with another. It may be used for a preliminary assessment of
exposure. The declared vibration emission level represents the main applications of the tool. However if the tool is used
for different applications, with different accessories or poorly maintained, the vibration emission may differ. This may
significantly increase the exposure level over the total working period.
An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or
when it is running but not actually doing the job. This may significantly reduce the exposure level over the total working
period. Identify additional safety measures to protect the operator from the effects of vibration such as: maintain the tool
and the accessories, keep the hands warm and organisation of work patterns.