CS1800
Your new cordless chain saw has been engineered and manufactured to Ryobi's high standard for dependability, ease
of operation, and operator safety. When properly cared for, the saw 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 product.
OPERATOR'S MANUAL
18 VOLT CORDLESS CHAIN SAW
MODEL NO. CS1800
SAVE THIS MANUAL FOR FUTURE REFERENCE
2
■ Table of Contents / Introduction ......................................................................................................................... 2
■ Important Safety Instructions ...................................................................................................................... 3 - 7
■ Symbols ....................................................................................................................................................... 8 - 9
■ Specifications .................................................................................................................................................. 10
■ Unpacking ........................................................................................................................................................ 10
■ Applications ..................................................................................................................................................... 10
■ Features....................................................................................................................................................10 - 11
■ Glossary of Terms ........................................................................................................................................... 12
■ Operation ..................................................................................................................................................13 - 22
■ Maintenance .............................................................................................................................................23 - 30
■ Bar and Chain Combinations ........................................................................................................................... 31
■ Troubleshooting ...............................................................................................................................................31
■ Warranty .......................................................................................................................................................... 32
■ Parts Ordering / Service .................................................................................................................................. 34
Cutting wood is an easy task with the 18V chain saw. With the charger and removable battery pack, the chain saw
can be charged and conveniently ready to use. Safety, performance, and dependability have been given top
priority in the design of this chain saw making it easy to maintain and operate.
This saw was designed for occasional light duty use and has some limitations as to what can be cut with it. It was
not designed for felling large trees or sawing of large logs.
Look for this symbol to point out important safety
precautions. It means attention!!! Your safety is involved.
INTRODUCTION
TABLE OF CONTENTS
3
READ ALL INSTRUCTIONS
BASIC SAFETY PRECAUTIONS
■ Do not operate a chain saw with one hand! Use a
firm grip with thumbs and fingers encircling the
chain saw handles. Serious injury to the operator,
helpers, bystanders, or any combination of these
persons may result from one-handed operation. A
chain saw is intended for two-handed use.
■ Always be aware of what you are doing when using
the chain saw. Use common sense. Do not operate
the chain saw when you are tired, ill, or under the
influence of alcohol, drugs, or medication.
■ Stay alert and pay attention to what you are doing.
Use common sense when using this unit.
■ Keep all parts of your body away from the saw
chain when the unit is running.
■ Always carry the chain saw by the front handle with
the unit stopped and the guide bar and saw chain
positioned to the rear. When transporting your
chain saw, use the appropriate guide bar scabbard.
■ Never let anyone use your chain saw who has not
received adequate instructions in its proper use.
This applies to rentals as well as privately owned
saws.
■ Before you start the unit, make sure the saw chain
is not contacting any object.
■ Stop the chain saw before setting it down. Do not
leave the unit running unattended.
■ To avoid accidental starting, never carry the unit
with your finger on the trigger.
■ Maintain the unit with care. Keep the cutting edge
sharp and clean for best performance and to
reduce the risk of injury. Follow instructions for
lubricating and changing accessories. Inspect the
battery charger cord periodically, and if damaged,
have it replaced or repaired by an authorized
service dealer.
■ Keep handles dry, clean, and free of oil and grease.
■ Do not operate a chain saw that is damaged,
improperly adjusted, or not completely and securely
assembled. Chain should stop turning when the
trigger is released. If the chain turns after the
trigger has been released, have the unit serviced
by your nearest Ryobi service dealer.
■ Check for damaged parts. Any part or guard that
has been 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 dealer unless otherwise
indicated elsewhere in this manual.
■ All chain saw service, other than the items listed in
the operation and maintenance sections, should be
performed by your nearest Ryobi service dealer.
■ Do not use in the rain, snow or wet conditions.
■ Always maintain a proper stance.
■ Do not adapt your powerhead to a bow guide or
use it to power any attachments or devices not
listed for your saw.
■ Do not cut vines and/or small underbrush.
SAFETY APPAREL
■ Wear snug fitting clothing. Always wear heavy, long
pants, overalls, jeans or chaps made of cut resis-
tant material or ones that contain cut resistant
inserts. Wear non-slip safety footwear. Wear non-
slip heavy duty gloves to improve your grip and to
protect your hands. Do not wear jewelry, short
pants, sandals, or go barefoot. Do not wear loose
fitting clothing, which could be drawn into the motor
or catch the chain or underbrush. Secure hair so it
is above shoulder level.
■ Wear eye protection which is marked to comply
with ANSI Z87.1 as well as hearing and head
protection when operating this equipment.
IMPORTANT SAFETY INSTRUCTIONS
WARNING:
Do not attempt to operate this unit until you have
read thoroughly and understand completely all
instructions, safety information, etc. contained in
this manual. Failure to comply can result in
accidents involving fire, electric shock, or
serious personal injury.
4
KICKBACK
See Figures 1 and 2.
■ WARNING: Kickback may occur when the moving
chain contacts an object at the upper portion of the
tip of the guide bar or when the wood closes in and
pinches the saw chain in the cut. Contact at the
upper portion of the tip of the guide bar can cause
the chain to dig into the object and stop the chain
for an instant. The result is a lightning fast, reverse
reaction which kicks the guide bar up and back
toward the operator. If the saw chain is pinched
along the top of the guide bar, the guide bar can be
driven rapidly back toward the operator. Either of
these reactions can cause loss of saw control
which can result in serious injury. Do not rely
exclusively upon the safety devices built into your
saw. As a chain saw user, you should take several
steps to keep your cutting jobs free from accident
or injury.
■ The following precautions should be followed
to minimize kickback:
1. Always grip the saw firmly with both hands. Hold
the saw firmly with both hands when the unit is
running. Place your right hand on the rear
handle and the left hand on the front handle with
your thumbs and fingers encircling the chain
saw handles. A firm grip together with a stiff left
arm will help you maintain control of the saw if
kickback occurs.
2. Make sure that the area in which you are cutting
is free from obstructions. Do not let the nose of
the guide bar contact a log, branch, fence, or
any other obstruction that could be hit while you
are operating the saw.
3. Always cut with the unit running at full speed.
Fully squeeze the throttle trigger and maintain a
steady cutting speed.
4. Use replacement parts such as low kickback
chain, SAFE-T-TIP anti-kickback nose guards,
chain brakes and special guide bars that reduce
the risks associated with rotational kickback.
Use only the replacement guide bars and low
kickback chains specified by the manufacturer
for your saw.
■ With a basic understanding of kickback, you can
reduce or eliminate the element of surprise. Sud-
den surprise contributes to accidents.
■ Keep proper footing and balance at all times.
IMPORTANT SAFETY INSTRUCTIONS
KICKBACK
DANGER ZONE
ROTATIONAL
KICKBACK
Fig. 2
■ Do not cut above shoulder height or overreach
when cutting.
■ Keep the SAFE-T-TIP anti-kickback nose guard
properly mounted on the guide bar to prevent
rotational kickback.
■ Follow the sharpening and maintenance instruc-
tions for the saw chain.
BAR SHOWN WITHOUT SAFE-T-TIP® NOSE GUARD
FOR ILLUSTRATION PURPOSES ONLY.
Fig. 1
5
IMPORTANT SAFETY INSTRUCTIONS
PULL
PUSH
Fig. 3
■ Push and Pull - This reaction force is always
opposite to the direction the chain is moving where
wood contact is made. Thus, the operator must be
ready to control the PULL when cutting on the
bottom edge of the bar, and PUSH when cutting
along the top edge.
See Figure 3.
IN THE CUTTING/WORK AREA
■ Do not operate a chain saw in a tree, on a ladder,
or scaffold; this is extremely dangerous.
■ Keep ALL children, bystanders, visitors, and
animals out of the work area while starting or
cutting with the chain saw.
NOTE: The size of the work area depends on the
job being performed as well as the size tree or
work piece involved. For example, felling a tree
requires a larger work area than making bucking
cuts.
■ Never start cutting until you have a clear work
area, secure footing, and a planned retreat path
from the falling tree. Cluttered area invite injuries.
■ Do not expose the chain saw to rain.
■ Do not use the chain saw in damp or wet locations.
■ Do not use the chain saw near flammable liquids,
gases, or in any type of explosive atmosphere.
■ Use extreme caution when cutting small size brush
and saplings, because slender material may catch
the saw chain and be whipped toward you or pull
you off balance.
■ When cutting a limb that is under tension, be alert
for spring back so that you will not be struck when
the tension in the wood fibers is released.
■ Do not force the chain saw. The job can be per-
formed better and safer at the rate for which it was
intended.
■ Always use the right product for your application.
The chain saw should be used for cutting wood
only. Never use the chain saw to cut plastic,
masonry or non-wood building materials.
■ Do not use the chain saw for purposes not in-
tended.
■ Store idle chain saw when not in use, chain saw
should be stored in a dry and high or locked area
out of the reach of children. When storing chain
saw, remove battery and place the scabbard on the
bar and chain or store the chain saw in a carry
case.
■ Remove the battery pack from the chain saw
before cleaning, servicing, storing, removing
material from the unit, changing accessories such
as the bar and chain, or when not in use.
6
UNDERSTANDING YOUR CHAIN SAW
SAFETY DEVICES
See Figure 4.
SAFE-T-TIP® Anti-Kickback Nose Guard
The SAFE-T-TIP® prevents kickback from happening,
because it covers the tip of the bar where kickback is
generated. Never attempt any kind of cutting where the
SAFE-T-TIP® would have to be removed from the bar
tip.
BATTERY SAFETY
■ Battery operated units do not have to be plugged
into an electrical outlet; therefore, they are always
in operating condition. Be aware of possible haz-
ards even when unit is not operating.
■ Remove the battery pack from the chain saw before
cleaning, servicing, storing, removing material from
the unit, changing accessories such as the bar and
chain, or when not in use.
■ A battery pack must be recharged only with the
specified charger for the battery pack. A charger
that may be suitable for one type of battery pack
may create a risk of fire when used with another
battery pack. Use battery pack only with charger
listed.
BATTERY PACK: Item # 1322401,
1323303, 130224007,
or 130256001
CHARGER: Item # 1423701
■ To reduce the risk of explosion and possible injury,
Do not place battery units or their batteries near fire
or heat.
■ Do not open or mutilate the battery pack. Released
electrolyte is corrosive and may cause damage to
the eyes or skin. It may be toxic if swallowed.
■ A damaged battery pack is subject to explosion. To
avoid serious personal injury, properly dispose of a
damaged battery pack.
■ Batteries vent hydrogen gas and can explode in the
presence of a source of ignition, such as a pilot
light. To reduce the risk of serious personal injury,
never use any cordless product in the presence of
open flame. An exploded battery pack can propel
debris and chemicals. If exposed, flush with water
immediately.
■ Do not charge unit in a damp or wet location.
Following this rule will reduce the risk of electric
shock.
■ For best results, your battery unit should be
charged in a location where the temperature is
more than 50°F (10°C) but less than 100°F (38°C).
Do not store outside or in vehicles.
■ Under extreme usage or temperature conditions,
battery pack leakage may occur. If liquid comes in
contact with your skin, wash immediately with soap
and water, then neutralize with lemon juice or
vinegar. If liquid gets into your eyes, flush them with
clean water for at least 10 minutes, then seek
immediate medical attention.
IMPORTANT SAFETY INSTRUCTIONS
SAFE-T-TIP
Fig. 4
LOW KICKBACK SAW CHAIN
The rakers (depth gauges) ahead of each cutter can
minimize the force of a kickback reaction by preventing
the cutters from digging in too deeply at the kickback
zone. Only use replacement chain that is equivalent to
original chain or has been certified as low kickback
chain per ANSI B175.1.
Low kickback saw chain is chain that has met the
kickback performance requirements of ANSI B175.1 -
1991 (American National Standard for Power Tools -
Gasoline-Powered Chain Saws-Safety Requirements)
when tested on the representative sample of chain
saws below 3.8 c.i.d. specified in ANSI B175.1 - 1991.
As saw chains are sharpened during their useful life,
they lose some of the low kickback qualities and extra
caution should be used.
GUIDE BARS
Generally, guide bars with small radius tips have
somewhat lower kickback potentials.
When making a replacement, be sure to order one of
the Ryobi bars listed for your saw in this operator's
manual. The proper size SAFE-T-TIP® nose guard
comes installed on the bar. Use only guide bars that
have a provision for mounting the SAFE-T-TIP®.
7
b. That extension cord is properly wired and in
good electrical condition; and
c. That wire size is large enough for AC ampere
rating of charger as specified below:
Cord Length (Feet) 25' 50' 100'
Cord Size (AWG) 16 16 16
NOTE: AWG = American Wire Gage
■ Do not operate charger with a damaged cord or
plug. If damaged, have replaced immediately by a
qualified serviceman.
■ Do not operate charger if it has received a sharp
blow, been dropped, or otherwise damaged in any
way; take it to a qualified serviceman.
■ Do not disassemble charger; take it to a qualified
serviceman when service or repair is required.
Incorrect reassembly may result in a risk of electric
shock or fire.
■ To reduce risk of electric shock, unplug the
charger from outlet before attempting any mainte-
nance or cleaning. Turning off controls will not
reduce this risk.
■ Disconnect charger from power supply when not in
use.
■ Risk of electric shock. Do not touch uninsulated
portion of output connector or uninsulated battery
terminal.
■ Save these instructions. Refer to them frequently
and use them to instruct others who may use this
unit. If you loan someone this unit, loan them these
instructions also.
■ Do not dispose of batteries in a fire. The cell may
explode. Batteries should be recycled, consult your
local waste authority for information regarding
available recycling and/or disposal options.
■ 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 pack terminals together may
cause sparks, burns, or a fire.
CHARGER SAFETY
■ Save these instructions. This manual contains
important Rules for Safe Operation and operating
instructions for charger.
■ Before using battery charger, read all instructions
and cautionary markings in this manual, on battery
charger, and product using battery charger.
■ To reduce risk of injury, charge only nickel-cad-
mium type rechargeable batteries. Other types of
batteries may burst, causing personal injury and
damage.
■ Do not expose charger to wet or damp conditions.
■ Use of an attachment not recommended or sold by
the battery charger manufacturer may result in a
risk of fire, electric shock, or injury to persons.
■ To reduce risk of damage to charger body and
cord, pull by charger plug rather than cord when
disconnecting charger.
■ Make sure cord is located so that it will not be
stepped on, tripped over, or otherwise subjected to
damage or stress.
■ An extension cord should not be used unless
absolutely necessary. Use of improper extension
cord could result in a risk of fire and electric shock.
If extension cord must be used, make sure:
a. That pins on plug of extension cord are the
same number, size and shape as those of plug
on charger.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
8
Important: Some of the following symbols may be used on your 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 EXPLANATION
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
min Minutes Time
Alternating Current Type or a characteristic of current
Direct Current Type or a characteristic of current
n
0
No Load Speed Rotational speed, at no load
Class II Construction Designates Double Insulated Construction
tools
.../min Revolutions or Reciprocation Per Minute Revolutions, strokes, surface speed, orbits
etc. per minute
Safety Alert Symbol Indicates danger, warning or caution. It means
attention!!! Your safety is involved.
Wet Conditions Alert Do not expose to rain or use in damp
locations.
Read Your Operator’s Manual Your manual contains special messages to
bring attention to potential safety concerns,
machine damage as well as helpful operating
and servicing information. Please read all the
information carefully to avoid injury and ma-
chine damage.
Wear Eye, Hearing, and Head Protection Wear eye protection which is marked to com-
ply with ANSI Z87.1 as well as hearing and
head protection when operating this equip-
ment.
Wear Safety Footwear Wear non-slip safety footwear when using this
equipment.
Wear Gloves Wear non-slip, heavy-duty protective gloves
when handling the pruner.
Keep Children and Pets Away Danger- Keep children and pets away.
Beware of Kickback DANGER! Beware of kickback.
SYMBOLS
9
Important: Some of the following symbols may be used on your 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 EXPLANATION
SAFE-T-TIP The SAFE-T-TIP® nose guard on your bar
nose prevents rotational kickback.
Bar nose contact Avoid bar nose contact.
Holding saw Hold saw properly with both hands.
NOTE: Save these instructions. Refer to them frequently and use them to instruct others who may use this unit. If
you loan someone this unit, loan them these instructions also.
SAVE THESE INSTRUCTIONS
SYMBOLS
WARNING:
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.
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.
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 information or instructions vital to the operation or maintenance of the equipment.
SYMBOL MEANING
10
Motor 18 Volt, DC
Bar Length 10 in. (254 mm)
Replacement Bar Part No. 671256002 or 671667002
Replacement Chain Part No. 6958301 or 690583002
Net Weight 7.5 lbs. (3.4 kg.)
Charger Replacement Part Number 1423701
Battery Pack Replacement 1322401, 1323303,
Part Number 130224007,
or 130256001
Charger Rating 120V, 60 Hz, AC Only
Charger Voltage 18 Volt
Charger Rate 1 Hour
PRODUCT SPECIFICATIONS:
This chain saw has been shipped completely assembled and ready for use. After removing it from the box, inspect
it carefully to make sure no breakage or damage has occurred during shipping. If any parts are damaged or missing,
contact your nearest Ryobi Authorized Service dealer to obtain replacement parts before attempting to operate the
chain saw. The guide bar, chain, wrench, bar and chain oil, scabbard, battery pack, battery charger, and this operator’s
manual are also included.
KNOW YOUR CHAIN SAW
See Figure 1.
Before attempting to use the chain saw, familiarize
yourself with all operating features and safety require-
ments.
WARNING:
Carefully read through this entire operator’s
manual before using your chain saw. Pay close
attention to the Important Safety Instructions,
Warnings and Cautions. If you use your chain
saw properly and only for what it is intended, you
will enjoy years of safe, reliable service.
WARNING:
Do not allow familiarity with your chain saw to
make you careless. Remember that a careless
fraction of a second is sufficient to inflict severe
injury.
WARNING:
If any parts are missing, do not operate your
chain saw until the missing parts are replaced.
Failure to do so could result in possible serious
personal injury.
The chain saw can be used for the following applications only:
■ Limbing and pruning branches from trees.
■ Felling small trees up to 5 in. (127 mm) diameter.
■ Bucking the fallen tree into shorter lengths.
NOTE: This saw was designed for occasional light duty use and has some limitations as to what can
be cut with it.
SPECIFICATIONS
UNPACKING
APPLICATIONS
FEATURES
11
Fig. 5
CHAIN OIL TANK CAP
REAR HANDLE
FRONT HANDLE
BAR
CHAIN
SAFE-T-TIP®
BATTERY PACK
HEX KEY
HEX KEY
STORAGE AREA
HAND GUARD
TRIGGER LOCK
BUTTON
TRIGGER
FEATURES
SCABBARD
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