Ryobi R18CSC 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 and all instructions. Failure
to follow the warnings and instructions 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
ŶKeep work area clean and well lit. Cluttered or dark
areas invite accidents.
ŶDo 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.
ŶKeep children and bystanders away while operating
a power tool. Distractions can cause you to lose
control.
ELECTRICAL SAFETY
ŶPower 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.
ŶAvoid 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.
ŶDo not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
ŶDo 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.
ŶWhen 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.
ŶIf 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
ŶStay 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.
ŶUse 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.
ŶPrevent 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.
ŶRemove 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.
ŶDo not overreach. Keep proper footing and balance
at all times. This enables better control of the power
tool in unexpected situations.
ŶDress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewellery or long
hair can be caught in moving parts.
ŶIf 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.
POWER TOOL USE AND CARE
ŶDo 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.
ŶDo 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.
ŶDisconnect the plug from the power source and/or
the battery pack 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.
ŶStore idle power tools out of the reach of children

Safety
2
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.
ŶMaintain power tools. 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.
ŶKeep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
ŶUse 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.
BATTERY TOOL USE AND CARE
ŶRecharge 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.
ŶUse power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire.
ŶWhen 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.
ŶUnder 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.
SERVICE
ŶHave 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.
CIRCULAR SAW SAFETY WARNINGS
CUTTING PROCEDURES
ŶDANGER! 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.
ŶDo not reach underneath the workpiece. The guard
cannot protect you from the blade below the workpiece.
ŶAdjust the cutting depth to the thickness of the
workpiece. Less than a full tooth of the blade teeth
should be visible below the workpiece.
ŶNever hold piece 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 minimize
body exposure, blade binding, or loss of control.
ŶHold power tool by insulated gripping surfaces only
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.
ŶWhen ripping, always use a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
ŶAlways 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.
ŶNever 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:
ŶKickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to
lift up and out of the workpiece toward the operator;
ŶWhen the blade is pinched or bound tightly by the kerf
closing down, the blade stalls and the motor reaction
drives the unit rapidly back toward the operator;
ŶIf 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
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.
ŶMaintain 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.
ŶWhen 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.
ŶWhen 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 saw blade is binding,
it may walk up or kickback from the workpiece as the
saw is restarted.
ŶSupport 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.
ŶDo not use dull or damaged blades. Unsharpened
or improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
ŶBlade depth and bevel adjusting locking levers
must be tight and secure before making cut. If blade

Safety
3
adjustment shifts while cutting, it may cause binding
and kickback.
ŶUse extra caution when sawing into existing walls
or other blind areas. The protruding blade may cut
objects that can cause kickback.
LOWER GUARD FUNCTION
ŶCheck 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 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.
ŶCheck 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.
ŶLower 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.
ŶAlways 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
ŶThe 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.
ŶDo not use any abrasive wheels.
ŶUse only blades specified in this manual, complying
with EN 847-1.
ŶAvoid overheating the blade tips. Do not use dull or
damaged blades. Do not force the tool.
ŶDo not use blades of larger or smaller diameter than
recommended.
ŶWear ear protection.
ŶClamp workpiece with a clamping device. Unclamped
workpieces can cause severe injury and damage.
ŶThoroughly 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.
ŶDo not touch the saw blade immediately after sawing.
The saw blade gets hot during sawing.
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.
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:
ŶInjury caused by kickback
–Read and understand the information in this manual.
ŶInjury caused by vibration
–Limit exposure. See Risk Reduction.
ŶInjury 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.
ŶElectric 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.
ŶInjury 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

Safety
4
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:
ŶKeep 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.
ŶAfter each period of operation, exercise to increase
blood circulation.
ŶTake 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 5.
1. Edge guide knob
2. Bevel adjustment knob
3. Spindle lock button
4. Front handle
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
MAINTENANCE
ŶWhen servicing, use only original manufacturer’s
replacement parts. Use of any other parts may create a
hazard or cause product damage.
ŶClean the tool and guarding system with clean cloths, or
blow it clean with compressed air.
ŶAvoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types
of commercial solvents and may be damaged by their
use. Use clean cloths to remove dirt, dust, oil, grease,
etc.
ŶDo not attempt to modify this tool or create accessories
not recommended for use with this tool.
ŶAll repairs should be performed by an authorised
RYOBI 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.

5
Know your product
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Getting started
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Getting started
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Operation
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40
45
10 - 52 mm10 - 52 mm
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Operation
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Operation
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Maintenance
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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 01/2003) 2.8 kg
Weight - not incl. battery pack 2.4 kg
Measured sound values determined according to EN 60745:
A-weighted sound pressure level
LpA = 80.1 dB(A)
Uncertainty K 3 dB
A-weighted sound power level LWA = 91.1 dB(A)
Uncertainty K 3 dB
Wear ear protectors.
Weighted root mean
The vibration total values (triaxial vector sum) determined
according to EN 60745:
Cutting wood ah,W = 3.42 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
RB18L40
RB18L50
BCS618
BCL14181H
BCL14183H
RC18150
RC18627
RC18120
VIBRATION LEVEL
WARNING
The vibration emission level given in this information sheet has been measured in accordance with a standardised test
given in EN 60745 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.

RYOBI®WARRANTY APPLICATION CONDITIONS
In addition to any statutory rights resulting from the purchase, this product is covered by a warranty as stated below.
1. The warranty period is 24 months for consumers and commences on the date the product was purchased. This date
has to be documented by an invoice or other proof of purchase. The product is designed and dedicated to consumer
and private use only. So there is no warranty provided in case of professional or commercial use. This warranty applies
only on new products.
2. There is a possibility to extend for a part of the range of power tools (AC/DC) the warranty period over the period
described above using the registration on the www.ryobitools.eu website. The eligibility of products for extended
warranty is clearly displayed in stores and / or on packaging and is contained within the product documentation. The
end user is required to register his/her newly-acquired products online within 30 days from the date of purchase. The
end user may register for the extended warranty in his/her country of residence if listed on the online registration form
where this option is valid. Furthermore, end users must give their consent to the storage of their personal data that is
required to be entered online. They must also accept the terms and conditions. The registration confirmation receipt,
which is sent out by e-mail, and the original invoice showing the date of purchase will serve as proof of the extended
warranty.
3. The warranty covers all defects of the product during the warranty period due to faults in workmanship or material at
the purchase date. The warranty is limited to repair and/or replacement and does not include any other obligations
including but not limited to incidental or consequential damages. The warranty is not valid if the product has been
misused, used contrary to the instruction manual, or has been incorrectly connected to a power supply. This warranty
does not apply to:
–any damage to the product that is the result of improper or lack of maintenance
–any product that has been altered or modified
–any product where original identification (trade mark, serial number) markings have been defaced, altered or
removed
–any damage caused by non-observance of the instruction manual
–any product not displaying the CE approval mark on the rating plate
–any product that has been attempted to be repaired by a non-authorised warranty service centre or without prior
authorisation by Techtronic Industries
–any product connected to an improper power supply (amps, voltage, frequency)
–any damage caused by external influences (water, chemical, physical, shocks) or foreign substances
–normal wear and tear spare parts
–inappropriate use, overloading of the tool
–use of non-approved accessories or parts
–Power tool accessories provided with the tool or purchased separately. including but not limited to screw driver bits,
drill bits, abrasive discs, sand paper and blades, lateral guide etc.
–Components (parts and accessories) subject to natural wear and tear, including but not limited to Service &
Maintenance Kits, carbon brushes, bearings, chuck, SDS drill bit attachment or reception, power cord, auxiliary
handle, transport carry case, sanding plate, dust bag, dust exhaust tube, felt washers, impact wrench pins &
springs, etc.
4. For servicing, the product must be sent or presented to a RYOBI authorised service station listed for each country in the
following list of service station addresses. In some countries your local RYOBI dealer undertakes to send the product
to the RYOBI service organisation. When sending a product to a RYOBI service station, the product should be safely
packed without any dangerous contents such as petrol, marked with sender’s address and accompanied by a short
description of the fault.
5. A repair / replacement under this warranty is free of charge. It does not constitute an extension or a new start of the
warranty period. Exchanged parts or products become our property. In some countries delivery charges or postage
will have to be paid by the sender. Your statutory rights arising from the purchase of the product remain unaffected.
6. This warranty is valid in the European Community, Switzerland, Iceland, Norway, Liechtenstein, Turkey and Russia.
Outside these areas, please contact your authorised RYOBI dealer to determine if another warranty applies.

ACD PLANT LTD
145 Southbank Road
Coundon
Coventry, West Midlands
CV6 1FG
Phone: [phone]
Email: [email protected]
Web: www.acdplant.co.uk
CBS Power Tools Limited
Unit 4, V P Square
Storeys Bar Rd, Fengate
Peterborough, Cambridgeshire
PE1 5YS
Phone: [phone]
Email: [email protected]
Web: www.cbspowertools.com
C D Powertools
76 Old Road
Churwell Morley, Leeds
LS27 7TH
Phone: [phone]
Email: [email protected]
Web : www.cdpowertools.co.uk
C J Sinclair Limited
44 Victoria Road
St Peters
Broadstairs, Kent
CT10 2UG
Phone: [phone]
Email: [email protected]
Web: www.cjsinclairltd.co.uk
Powertech Ind Ltd
Unit 2C, Ellison Road
Norwood Ind, Killamarsh
6KHI¿HOG6RXWK<RUNVKLUH
S21 2JG
Phone: [phone]
Email: [email protected]
Web: www.powertech-industrial.co.uk
RYCKO Technical Services LTD
104 Green Lane
St Albans, Herts
AL3 6EX
Phone: [phone]
Email: [email protected]
Web: www.ryckotechnical.com
ToolTech Industrial Equipment
227 E Dunhill Road, Macosquin
Coleraine, Co Londonderry
BT514LQ
Phone: [phone]
Email: [email protected]
AUTHORISED SERVICE CENTRES
For an updated list of authorised service centres, visit http://en.ryobitools.eu/header/service-and-support/service-agents.