Ryobi P548 User Manual
OPERATOR’S MANUAL
MANUEL D’UTILISATION
MANUAL DEL OPERADOR
18 VOLT CHAIN SAW
SCIE À CHAÎNE DE 18 V
MOTOSIERRA DE 18 V
P548
Your chain saw has been engineered and manufactured to our high standard for dependability, ease of operation, and
operator safety. When 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 your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
Cette scie à chaîne a été conçue et fabriquée conformément
aux strictes normes de fiabilité, simplicité d’emploi et sécurité
d’utilisation. Correctement entretenue, elle vous donnera des années
de fonctionnement robuste et sans problème.
AVERTISSEMENT : Pour réduire les risques de
blessures, l’utilisateur doit lire et veiller à bien comprendre le
manuel d’utilisation avant d’employer ce produit.
Merci de votre achat.
CONSERVER CE MANUEL POUR
FUTURE RÉFÉRENCE
Su motosierra inalámbrica ha sido diseñada y fabricada
de conformidad con nuestras estrictas normas para
brindar fiabilidad, facilidad de uso y seguridad para el operador.
Con el debido cuidado, le brindará muchos años de sólido
y eficiente funcionamiento.
ADVERTENCIA: Para reducir el riesgo de lesiones,
el usuario debe leer y comprender el manual del operador antes
de usar este producto.
Le agradecemos su compra.
GUARDE ESTE MANUAL PARA
FUTURAS CONSULTAS
TABLE OF CONTENTS
TABLE DES MATIÈRES / ÍNDICE DE CONTENIDO
Introduction .......................................................................................................................................2
Introduction / Introducción
General Power Tool Safety Warnings ............................................................................................ 3-4
Avertissements règles de sécurité relatives aux outils électriques / Advertencias de seguridad para herramientas eléctricas
Chain Saw Safety Warnings .......................................................................................................... 5-9
Avertissements de sécurité relatifs au scie à chaîne / Advertencias de seguridad de la motosierra
Symbols .................................................................................................................................... 10-11
Symboles / Símbolos
Glossary of Terms ............................................................................................................................12
Glossaire / Glosario de términos
Features ..................................................................................................................................... 13-14
Caractéristiques / Características
Assembly ......................................................................................................................................... 15
Assemblage / Armado
Operation ................................................................................................................................... 15-25
Utilisation / Funcionamiento
Maintenance .............................................................................................................................. 26-32
Entretien / Mantenimiento
Bar and Chain Combinations ..........................................................................................................32
Combinaisons de guide et chaîne / Combinations de barra y cadena
Troubleshooting ............................................................................................................................... 33
Dépannage / Corrección de problemas
Warranty ..........................................................................................................................................34
Garantie / Garantía
Parts Ordering and Service ............................................................................................... Back Page
Commande de pièces et réparation / Pedidos de piezas y servicio ......................................................... Page arrière / Pág. posterior
INTRODUCTION
INTRODUCTION / INTRODUCCIÓN
This product 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.
* * *
Ce produit offre de nombreuses fonctions destinées à rendre son utilisation plus plaisante et satisfaisante.
Lors de la conception de ce produit, l’accent a été mis sur la sécurité, les performances et la fiabilité,
afin d’en faire un outil facile à utiliser et à entretenir.
* * *
Este producto ofrece numerosas características para hacer más agradable y placentero su uso. En el
diseño de este producto se ha conferido prioridad a la seguridad, el desempeño y la fiabilidad, por lo
cual se facilita su manejo y mantenimiento.
2
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.
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 ground fault circuit
interrupter (GFCI) protected supply. Use of a
GFCI reduces the risk of electric shock.
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.
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, clothing and gloves
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.
3 - English
GENERAL POWER TOOL SAFETY WARNINGS
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.
Disconnect 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.
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. 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.
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.
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.
When servicing a power 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.
4 - English
CHAIN SAW SAFETY WARNINGS
Keep all parts of the body away from the
saw chain when the chain saw is operating.
Before you start the chain saw, make sure
the saw chain is not contacting anything. A
moment of inattention while operating chain
saws may cause entanglement of your clothing
or body with the saw chain.
Always hold the chain saw with your right
hand on the rear handle and your left hand on
the front handle. Holding the chain saw with a
reversed hand configuration increases the risk
of personal injury and should never be done.
Hold the power tool by insulated gripping
surfaces only, because the saw chain may
contact hidden wiring. Saw chains contacting
a “live” wire may make exposed metal parts of
the power tool “live” and could give the operator
an electric shock.
Wear safety glasses and hearing protection.
Further protective equipment for head, hands,
legs and feet is recommended. Adequate
protective clothing will reduce personal injury
by flying debris or accidental contact with the
saw chain.
Do not operate a chain saw in a tree. Operation
of a chain saw while up in a tree may result in
personal injury.
Always keep proper footing and operate
the chain saw only when standing on fixed,
secure and level surface. Slippery or unstable
surfaces such as ladders may cause a loss of
balance or control of the chain saw.
When cutting a limb that is under tension be
alert for spring back. When the tension in the
wood fibres is released the spring loaded limb
may strike the operator and/or throw the chain
saw out of control.
Use extreme caution when cutting brush and
saplings. The slender material may catch the
saw chain and be whipped toward you or pull
you off balance.
Carry the chain saw by the front handle with
the chain saw switched off and away from
your body. When transporting or storing the
chain saw always fit the guide bar cover.
Proper handling of the chain saw will reduce the
likelihood of accidental contact with the moving
saw chain.
Follow instructions for lubricating, chain
tensioning and changing accessories.
Improperly tensioned or lubricated chain may
either break or increase the chance for kickback.
Keep handles dry, clean, and free from oil
and grease. Greasy, oily handles are slippery
causing loss of control.
Cut wood only. Do not use chain saw for
purposes not intended. For example: do not
use chain saw for cutting plastic, masonry
or non-wood building materials. Use of the
chain saw for operations different than intended
could result in a hazardous situation.
CAUSES AND OPERATOR PREVENTION
OF KICKBACK
Kickback may occur when the nose or tip of the
guide bar touches an object, or when the wood
closes in and pinches the saw chain in the cut.
Tip contact in some cases may cause a sudden
reverse reaction, kicking the guide bar up and back
towards the operator.
Pinching the saw chain along the top of the guide
bar may push the guide bar rapidly back towards
the operator.
Either of these reactions may cause you to lose
control of the saw which could result in serious
personal 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.
Kickback is the result of tool misuse and/or
incorrect operating procedures or conditions and
can be avoided by taking proper precautions as
given below:
Maintain a firm grip, with thumbs and fingers
encircling the chain saw handles, with both
hands on the saw and position your body
and arm to allow you to resist kickback
forces. Kickback forces can be controlled by
the operator, if proper precautions are taken.
Do not let go of the chain saw.
5 - English
CHAIN SAW SAFETY WARNINGS
Do not overreach and do not cut above
shoulder height. This helps prevent unintended
tip contact and enables better control of the
chain saw in unexpected situations.
Only use replacement bars and chains
specified by the manufacturer. Incorrect
replacement bars and chains may cause chain
breakage and/or kickback.
Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain.
Decreasing the depth gauge height can lead to
increased kickback.
It is not recommended to cut over chest height.
Do not start cutting until you have a clear work
area, secure footing, and a planned retreat
path from the falling tree. Cluttered areas invite
accidents.
Keep ALL children, bystanders, visitors, and
animals out of the work area while starting or
cutting with the chain saw. Do not let visitors
contact chain saw or extension cord.
Do not operate chain saw in explosive
atmospheres, such as in the presence of
flammable liquids, gases, or dust. Chain saws
create sparks which may ignite the dust or
fumes.
Dress Properly - Wear snug fitting clothing.
Always wear heavy, long pants, long sleeves,
overalls, jeans or chaps made of cut resistant
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 hearing and head protection.
Heavy protective clothing may increase operator
fatigue, which could lead to heat stroke. During
weather that is hot and humid, heavy work
should be scheduled for early morning or late
afternoon hours when temperatures are cooler.
Always wear eye protection with side shields
marked to comply with ANSI Z87.1 as well as
hearing and head protection when operating
this equipment.
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,
upset, or under the influence of alcohol, drugs,
or medication.
Do not expose the chain saw to rain.
Do not use the chain saw in damp or wet
locations.
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.
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.
To avoid accidental starting, never carry the unit
with your finger on the switch 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.
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.
Guard against electric shock - Avoid body
contact with grounded surfaces such as metal
pipes and wire fences. There is an increased
risk of electric shock if your body is grounded.
Do not operate a chain saw that is damaged,
improperly adjusted, or not completely and
securely assembled. Chain should slow to a
stop when the switch trigger is released. If the
chain continues to turn after the switch trigger
has been released, have the unit serviced by an
authorized service center.
6 - English
CHAIN SAW SAFETY WARNINGS
Check for damaged parts. 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 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 an authorized
service center.
Always maintain a proper stance.
Do not use chain saw if switch does not turn it
on and off. Have defective switch replaced by
an authorized service center.
Do not adapt your powerhead to a bow guide
or use it to power any attachments or devices
not listed for the saw.
Disconnect chain saw from power supply when
not in use, before servicing, and when making
adjustments and changing attachments, such
as saw chain and guard.
Do not cut vines and/or small underbrush.
Do not operate a chain saw in a tree, on a ladder,
rooftop, scaffold, or other unstable support; this
is extremely dangerous.
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.
Do not force the chain saw. The job can be
performed 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.
Store chain saw when not charging or 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 place the scabbard on
the bar and chain.
Use battery only with charger listed. For use
with 18V nickel-cadmium and 18V lithium-ion
battery packs, see tool/appliance/battery pack/
charger correlation supplement 987000-432.
Battery operated units do not have to be
plugged into an electrical outlet; therefore, they
are always in operating condition. Be aware
of possible hazards even when unit is not
operating.
Remove the battery pack from the chain
saw when not charging and before cleaning,
servicing, storing, removing material from the
unit, changing accessories such as the bar and
chain, or when not in use.
Save these instructions. Refer to them frequently
and use them to instruct others who may use
this product. If you loan someone this product,
loan them these instructions also.
7 - English
CHAIN SAW SAFETY WARNINGS
KICKBACK
See Figures 1 - 3.
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
the 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:
ROTATIONAL
KICKBACK
Fig. 1
KICKBACK
DANGER ZONE
• 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 your 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.
• 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.
• Always cut with the unit running at full speed.
Fully squeeze the throttle trigger and maintain
a steady cutting speed.
• Use replacement parts such as low kickback chain, 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 the saw.
Fig. 2
PUSH
With a basic understanding of kickback, you
can reduce or eliminate the element of surprise.
Sudden surprise contributes to accidents.
8 - English
PULL
Fig. 3
CHAIN SAW SAFETY WARNINGS
Keep proper footing and balance at all times.
Do not cut above chest height or overreach
when cutting.
Follow the sharpening and maintenance
instructions for the saw chain.
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.
UNDERSTANDING YOUR CHAIN SAW
SAFETY DEVICES
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 (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.
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 bars listed for the saw in this operator’s
manual.
9 - English
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with
this product.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION:
NOTICE:
Some of the following symbols may be used on this product. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the product better and
safer.
Indicates a hazardous situation, which, if not avoided, will result
in death or serious injury.
Indicates a hazardous situation, which, if not avoided, could
result in death or serious injury.
Indicates a hazardous situation, that, if not avoided, may result
in minor or moderate injury.
(Without Safety Alert Symbol) Indicates information considered
important, but not related to a potential injury (e.g. messages
relating to property damage).
SYMBOL NAME DESIGNATION/EXPLANATION
Safety Alert Indicates a potential personal injury hazard.
To reduce the risk of injury, user must read and
Read Operator’s Manual
Eye, Hearing, and Head
Protection
Wet Conditions Alert Do not expose to rain or use in damp locations.
Operate With Two Hands Hold and operate the saw properly with both hands.
One Handed Do not operate the saw using only one hand.
Chain Rotation Indicates direction of moving chain.
understand operator’s manual before using this
product.
Always wear eye protection with side shields marked
to comply with ANSI Z87.1, along with hearing and
head protection when operating this equipment.
10 - English
SYMBOLS
Some of the following symbols may be used on this product. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the product better and safer.
SYMBOL NAME DESIGNATION/EXPLANATION
Kickback DANGER! BEWARE OF KICKBACK.
Bar Nose Contact Avoid bar nose contact.
Wear Gloves
Wear Safety Footwear
Keep Tool Away from
Electrical Lines/Keep
Bystanders Away
Recycle Symbols
V Volts Voltage
Direct Current Type or a characteristic of current
Wear non-slip, heavy-duty protective gloves when
handling the chain saw.
Wear non-slip safety footwear when using this
equipment.
DANGER! Risk of electrocution! Keep tool 50 feet
away from electrical lines. Keep all bystanders at
least 50 ft. away or twice the height of the largest
trees in the felling area when felling.
This product uses lithium-ion or nickel-cadmium
batteries. Local, state or federal laws may prohibit
disposal of batteries in ordinary trash. Consult
your local waste authority for information regarding
available recycling and/or disposal options.
11 - English
GLOSSARY OF TERMS
Bucking
The process of cross cutting a felled tree or log
into lengths.
Chain Saw Powerhead
A chain saw without the saw chain and guide bar.
Drive Sprocket or Sprocket
The toothed part that drives the saw chain.
Felling
The process of cutting down a tree.
Felling Back Cut
The final cut in a tree felling operation made on
the opposite side of the tree from the notching
undercut.
Front Hand Guard
A structural barrier between the front handle of a
chain saw and the guide bar, typically located close
to the hand position on the front handle.
Front Handle
The support handle located at or toward the front
of the chain saw. This handle is for the left hand.
Guide Bar
A solid railed structure that supports and guides
the saw chain.
Kickback
The backward or upward motion, or both, of the
guide bar occurring when the saw chain near the
nose of the top area of the guide bar contacts any
object such as a log or branch, or when the wood
closes in and pinches the saw chain in the cut.
Kickback (Pinch)
The rapid pushback of the saw which can occur
when the wood closes in and pinches the moving
saw chain in the cut along the top of the guide bar.
Kickback (Rotational)
The rapid upward and backward motion of the
saw which can occur when the moving saw chain
near the upper portion of the tip of the guide bar
contacts an object, such as a log or branch.
Lock-out Button
A movable stop that prevents the unintentional
operation of the switch until manually actuated.
Low-Kickback Chain
A chain that complies with the kickback
performance requirements of ANSI B175.1 when
tested on a representative sample of chain saws.
Normal Cutting Position
Those positions assumed in performing the bucking
and felling cuts.
Notching Undercut
A notch cut in a tree that directs the tree’s fall.
Rear Handle
The support handle located at or toward the rear
of the saw. It normally contains the throttle. This
handle is for the right hand.
Reduced Kickback Guide Bar
A guide bar which has been demonstrated to
reduce kickback significantly.
Replacement Saw Chain
A chain that complies with the kickback
performance requirements of ANSI B175.1 when
tested with specific chain saws. It may not meet
the ANSI performance requirements when used
with other saws.
Saw Chain
A loop of chain having cutting teeth that cut the
wood, and that is driven by the motor and is
supported by the guide bar.
Spiked Bumper (Spike)
The pointed tooth or teeth for use when felling or
bucking to pivot the saw and maintain position
while sawing.
Springpole
A small tree (sapling) or limb that is bent or trapped
under tension. It may “spring back” rapidly when
cut, causing a dangerous situation.
Switch Trigger
A device that when operated will complete or
interrupt an electrical power circuit to the motor
of the chain saw.
12 - English
FEATURES
PRODUCT SPECIFICATIONS
Motor ...................................................................................................................................... 18 Volt DC
Bar Length .......................................................................................................................................12 in.
Chain oil tank capacity ..................................................................................................................6.8 oz.
NOTE: This saw was designed for occasional light duty use and has some limitations as to what it can
cut.
BATTERY
FRONT HAND
GUARD
CHAIN
PORT
REAR
HANDLE
SWITCH
TRIGGER
CHAIN OIL
TANK CAP
FRONT HANDLE
LOCK-OUT
BUTTON
SCABBARD
GUIDE
BAR
CHAIN COVER
LOCK KNOB
CHAIN TENSION
ADJUSTMENT RING
13 - English
Fig. 4
FEATURES
KNOW YOUR CHAIN SAW
See Figure 4.
The safe use of this product requires an
understanding of the information on the product and
in this operator’s manual as well as a knowledge
of the project you are attempting. Before use of
this product, familiarize yourself with all operating
features and safety rules.
CHAIN TENSION ADJUSTMENT RING
This feature allows user to adjust the tension of
the chain.
GUIDE BAR
The factory-equipped guide bar has a small radius
tip that offers a somewhat lower kickback potential.
LOCK-OUT BUTTON
A control feature designed to prevent the motor
from being accidently started.
LOW KICKBACK SAW CHAIN
The low kickback saw chain helps minimize the
force of a kickback reaction by preventing the
cutters from digging in too deeply at the kickback
zone.
SWITCH TRIGGER
Squeeze the switch trigger to operate the unit after
lock-out button has been pushed in. Release the
switch trigger to stop the unit.
14 - English
ASSEMBLY
UNPACKING
This product has been shipped completely
assembled.
Carefully remove the product and any
accessories from the box. Make sure that all
items listed in the packing list are included.
WARNING:
Do not use this product if it is not completely
assembled or if any parts appear to be missing
or damaged. Use of a product that is not
properly and completely assembled could result
in serious personal injury.
Inspect the product carefully to make sure no
breakage or damage occurred during shipping.
Do not discard the packing material until you
have carefully inspected and satisfactorily
operated the product.
If any parts are damaged or missing, please call
1-800-860-4050 for assistance.
PACKING LIST
WARNING:
If any parts are damaged or missing do not
operate this product until the parts are replaced.
Use of this product with damaged or missing
parts could result in serious personal injury.
WARNING:
Do not attempt to modify this product or create
accessories not recommended for use with this
product. Any such alteration or modification
is misuse and could result in a hazardous
condition leading to possible serious personal
injury.
WARNING:
To prevent accidental starting that could cause
serious personal injury, always remove the
battery pack from the product when assembling
parts.
Chain Saw with Scabbard
Operator’s Manual
OPERATION
DANGER:
Never cut near power lines, electric cords, or
other electric sources. If bar and chain jams
on any electrical cord or line, DO NOT TOUCH
THE BAR OR CHAIN! THEY CAN BECOME
ELECTRICALLY LIVE AND VERY DANGEROUS.
Continue to hold the chain saw by the insulated
rear handle or lay it down and away from you in
a safe manner. Disconnect the electrical service
to the damaged line or cord before attempting
to free the bar and chain from the line or cord.
Contact with the bar, chain, other conductive
parts of the chain saw, or live electric cords or
lines will result in death by electrocution, electric
shock, or serious personal injury.
WARNING:
Do not allow familiarity with this product to
make you careless. Remember that a careless
fraction of a second is sufficient to inflict serious injury.
WARNING:
Always wear eye protection with side shields
marked to comply with ANSI Z87.1, along with
hearing and head protection. Failure to do so
could result in objects being thrown into your
eyes resulting in possible serious injury.
15 - English
OPERATION
WARNING:
Do not use any attachments or accessories
not recommended by the manufacturer of this
product. The use of attachments or accessories
not recommended can result in serious personal
injury.
WARNING:
Never fell a tree or cut a log or limb that has a
diameter greater that the length of the guide
bar. Only properly trained professionals should
perform these cuts. Performing these types of
cuts can cause an accident and result in death
or serious personal injury.
NOTICE:
Before each use, inspect the entire product
for damaged, missing, or loose parts such as
screws, nuts, bolts, caps, etc. Tighten securely
all fasteners and caps and do not operate this
product until all missing or damaged parts are
replaced. Please contact customer service or
an authorized service center for assistance.
TO INSTALL/REMOVE BATTERY PACK
See Figure 5.
WARNING:
Always remove battery pack from your tool
when you are assembling parts, making adjustments, cleaning, carrying, transporting or when
not in use. Removing battery pack will prevent
accidental starting that could cause serious
personal injury.
NOTE: To avoid serious personal injury, always
remove the battery pack and keep hands clear of
the look-out button when carrying or transporting
the tool.
To install:
Place the battery pack in your chain saw. Align
raised rib on battery pack with groove in chain
saw’s battery port.
Make sure the latches on each side of the bat-
tery pack snap in place and that battery pack is
secured in chain saw before beginning operation.
To remove:
Locate latches on side of battery pack and depress
both sides to release the battery pack from the
chain saw.
APPLICATIONS
You may use this product for the following purposes:
Limbing and pruning branches from trees
Felling small trees
Bucking the fallen tree into shorter lengths
This product will accept RYOBI™ ONE+™ 18 V
lithium-ion battery packs and RYOBI™ ONE+™ 18 V
nickel-cadmium battery packs.
For complete charging instructions, refer to the
Operator’s Manual for your RYOBI™ ONE+™ battery pack and charger models.
BATTERY
PORT
LATCH
BATTERY
PACK
LATCH
Fig. 5
16 - English
OPERATION
NOTICE:
When placing battery pack in your chain saw,
be sure raised rib on battery pack aligns with
groove in chain saw’s battery port and latches
snap in place properly. Improper assembly of
battery pack can cause damage to internal
components.
CHAIN LUBRICATION SYSTEM
See Figure 6.
NOTICE:
Remove battery pack from unit. Fill oil tank with
Ryobi Bar and Chain Lubricant before starting
the chain saw. Failure to lubricate the chain will
cause damage to the bar and chain.
Use RYOBI Bar and Chain Lubricant. It is formu-
lated to perform over a wide temperature range
with no dilution required.
NOTE: Do not use dirty, used or otherwise con-
taminated lubricants. Damage may occur to the
bar or chain.
Turn saw on its side and remove chain oil tank
cap.
Carefully pour the bar and chain lubricant into
the tank.
Wipe off excess lubricant.
Check and fill the oil tank when battery is
recharged, or as needed.
NOTE: It is normal for lubricant to seep from the
saw when not in use. To prevent seepage, empty
the oil tank after each use. When storing the unit
for a long period of time (three months or longer) be
sure the chain is lightly lubricated; this will prevent
rust on the chain and bar sprocket.
NOTICE:
Before each use, check to make sure that the
chain is properly tensioned. A cold chain is correctly tensioned when there is no slack on the
underside of the guide bar, the chain is snug,
and it can be turned by hand without binding.
During normal saw operation, the temperature
of the chain increases. The drive links of a correctly tensioned warm chain will hang approximately .050 in. out of the bar groove.
See the Adjusting the Chain Tension instruc-
tions in the Maintenance section of this manual
to properly adjust the chain tension.
CHAIN OIL
TANK CAP
Fig. 6
17 - English
OPERATION
STARTING AND STOPPING THE CHAIN
SAW
See Figure 7.
WARNING:
Keep body to the left of the chain line. Never
straddle the saw or chain, or lean over past the
chain line.
Starting the chain saw:
Press and hold the lock-out button. This makes
the switch trigger operational.
Press and hold the switch trigger, release the
lock-out button and continue to squeeze the
switch trigger for continued operation.
Stopping the chain saw:
Release the switch trigger to stop the chain saw.
Upon release of the switch trigger, the lock-out
button will be automatically reset to the lock
position.
This cordless chain saw is designed for limbing
and pruning type cutting, as well as cutting trees
up to 10 in. in diameter only.
1
2
SWITCH
TRIGGER
2
1
LOCK-OUT
BUTTON
LOCK-OUT
BUTTON
SWITCH
TRIGGER
Fig. 7
18 - English
OPERATION
PREPARATION FOR CUTTING
PROPER GRIP ON HANDLES
See Figures 8 - 10.
Refer to Chain Saw Safety Warnings earlier in this
manual for appropriate safety equipment.
Wear non-slip gloves for maximum grip and
protection.
Hold the saw firmly with both hands. Always
keep your left hand on the front handle and your
right hand on the rear handle so that your body
is to the left of the chain line.
WARNING:
Never use a left-handed (cross-handed) grip,
or any stance which would place your body or
arm across the chain line.
Maintain a proper grip on the saw whenever
the unit is running. The fingers should encircle
the handle and the thumb is wrapped under the
handlebar. This grip is least likely to be broken
(by a kickback or other sudden reaction of the
saw). Any grip in which the thumb and fingers
are on the same side of the handle, is dangerous because a slight kick of the saw can cause
loss of control.
WARNING:
Do not operate the switch trigger with your left
hand and hold the front handle with your right
hand. Never allow any part of your body to be
in the chain line while operating a saw. Improper
operation of the chain saw could result in serious personal injury.
Fig. 8
Fig. 9
19 - English
CHAIN LINE
Fig. 10
OPERATION
PROPER CUTTING STANCE
See Figure 11 - 12.
WARNING:
Alway use the proper cutting stance described
in this section. Never kneel when using the
chain saw except when felling a tree as shown
in figure 12. Kneeling could result in loss of stability and control of the saw resulting in serious
personal injury.
Weight should be balanced with both feet on
solid ground.
Keep left arm with elbow locked in a “straight
arm” position to withstand any kickback force.
Your body should always be to the left of the
chain line.
Thumb should be on underside of handlebar.
CHAIN LINE
STRAIGHT ARM
POSITION
Fig. 11
BASIC CUTTING PROCEDURE
Practice cutting a few small logs using the following
technique to get the “feel” of using the saw before
you begin a major sawing operation.
Take the proper stance in front of the wood with
the saw off.
Squeeze the switch trigger and let the chain
accelerate to full speed before entering the cut.
Begin cutting with the saw against the log.
Keep the unit running the entire time you are
cutting, maintain a steady speed.
Allow the chain to cut for you; exert only light
downward pressure. If you force the cut, damage to the bar, chain, or unit can result.
Release the switch trigger as soon as the cut
is completed, allowing the chain to stop. If you
run the saw without a cutting load, unnecessary
wear can occur to the chain, bar, and unit.
Do not put pressure on the saw at the end of cut.
WORK AREA PRECAUTIONS
Cut only wood or materials made from wood,
no sheet metal, no plastics, no masonry, no
non-wood building materials.
Never allow children to operate the saw. Allow
no person to use this chain saw who has not
read this Operator’s Manual or received ade-
Fig. 12
quate instructions for the safe and proper use
of this chain saw.
When felling a tree, keep everyone - helpers,
bystanders, children, and animals - a safe distance from the cutting area. During felling operations, the safe distance should be a least twice
the height of the largest trees in the felling area.
During bucking opetations, keep a minimum distance of 15 feet between workers. Trees should
not be felled in a manner that would endanger
any person, strike any utility line or cause any
property damage. If the tree does make contact
with any utility line, the utility company should
be notified immediately.
Always cut with both feet on solid ground to
prevent being pulled off balance.
Do not cut above chest height, as a saw held high-
er is difficult to control against kickback forces.
20 - English
OPERATION
45°
45°
Do not fell trees near electrical wires or build-
ings. Leave this operation for professionals.
Cut only when visibility and light are adequate
for you to see clearly.
FELLING TREES
See Figures 13 - 16.
HAZARDOUS CONDITIONS
WARNING:
RETREAT PATH
Do not fell trees during periods of high wind or
heavy precipitation. Wait until the hazardous
weather has ended.
WARNING:
Closely check for broken or dead branches,
which could fall while cutting and do not cut
near buildings or electrical wires if you do not
know the direction of tree fall. Do not cut at
night or during bad weather conditions, such as
rain, snow, or strong winds, which can reduce
visibility and control of the chain saw. If the tree
you are felling makes contact with any utility
line, you should discontinue use of the chain
saw and immediately notify the utility company.
Failure to follow these instructions could result
in death or serious personal injury.
When felling a tree, it is important that you follow
these warnings and instructions to prevent possible serious injury.
■Do not cut down trees having an extreme lean or
large trees with rotten limbs, loose bark, or hollow trunks. Have these trees pushed or dragged
down with heavy equipment, then cut them up.
■Do not cut trees near electrical wires or buildings.
■Check the tree for damaged or dead branches
that could fall and hit you during felling.
■Periodically glance at the top of the tree during
the backcut to assure the tree is going to fall in
the desired direction.
If the tree starts to fall in the wrong direction,
or if the saw gets caught or hung up during the
fall, leave the saw and save yourself!
21 - English
PLANNED LINE
OF FALL
RETREAT PATH
Fig. 13
Felling a tree - When bucking and felling operations are being performed by two or more persons, at the same time, the felling operation
should be separated from the bucking operation
by a distance of at least twice the height of the
tree being felled. Trees should not be felled in a
manner that would endanger any person, strike
any utility line or cause any property damage. If
the tree does make contact with any utility line, the
utility company should be notified immediately.
Before any cuts are started, pick your escape
route (or routes in case the intended route is
blocked); clear the immediate area around the
tree and make sure there are no obstructions in
your planned path of retreat. Clear paths of safe
retreat should extend back and diagonally (45°)
to the rear of the planned line of fall. When the
tree begins to fall, you should retreat away from
the direction of fall along a retreat path and at
least 20 feet away from the trunk in case it kicks
back over the stump. See Figure 13.
Before felling is started, consider the force and
direction of the wind, the lean and balance of
the tree, and the location of large limbs. These
things influence the direction in which the tree
OPERATION
will fall. Do not try to fell a tree along a line different from its natural line of fall.
The chain saw operator should keep on the
uphill side of the terrain as the tree is likely to
roll or slide downhill after it is felled.
Remove dirt, stones, loose bark, nails, staples,
and wire from the tree where felling cuts are to
be made.
Notched Undercut. Cut a notch about 1/3 the
diameter of the tree, perpendicular to the direction of fall. Make the cuts of the notch so they
intersect at a right angle to the line of fall. This
notch should be cleaned out to leave a straight
line. To keep the weight of the wood off the saw,
always make the lower cut of the notch before
the upper cut. See Figure 14.
Felling Backcut. The backcut is always made
level and horizontal, and at a minimum of 2 in.
above the horizontal cut of the notch. See Fig-
ures 14 - 15.
Never cut through to the notch. Always leave a
band of wood between the notch and backcut
(approximately 2 in. or 1/10 the diameter of the
tree). This is called “hinge” or “hingewood.” It
controls the fall of the tree and prevents slipping or twisting or shoot-back of the tree off the
stump. See Figures 14 - 15.
On large diameter trees, stop the back cut
before it is deep enough for the tree to either
fall or settle back on the stump. Then insert
soft wooden or plastic wedges into the cut so
they do not touch the chain. The wedges can
be driven in, little by little, to help jack the tree
over. See Figure 16.
As tree starts to fall, stop the chain saw and put
it down immediately. Retreat along the cleared
path, but watch the action in case something
falls your way. Be alert for overhead limbs or
branches that may fall and watch your footing.
BACK CUT
2 in.
BACK CUT
HINGE
HINGE
2 in. OR 1/10 DIA
WEDGE
NOTCH -
APPROX. 1/3
DIAMETER OF
TRUNK
Fig. 14
NOTCH
Fig. 15
Fig. 16
WARNING:
Never cut through to the notch when making a
backcut. The hinge controls the fall of the tree,
this is the section of wood between the notch
and backcut.
22 - English
OPERATION
REMOVING BUTTRESS ROOTS
See Figure 17.
A buttress root is a large root extending from the
trunk of the tree above the ground. Remove large
buttress roots prior to felling. Make the horizontal
cut into the buttress first, followed by the vertical
cut. Remove the resulting loose section from the
work area. Follow the correct tree felling procedure
as stated in Felling Trees after you have removed
the large buttress roots.
VERTICAL
CUT
LOOSE
SECTION
BUCKING
See Figures 18 - 21.
Bucking is the term used for cutting a fallen tree
to the desired log length.
Always make sure your footing is secure and
your weight is distributed evenly on both feet.
■ Cut only one log at a time.
■ Support small logs on a saw horse or another
log while bucking.
■ Keep a clear cutting area. Make sure that no
objects can contact the guide bar nose and
chain during cutting, this can cause kickback.
Refer to Kickback earlier in this manual.
■When bucking on a slope, always stand on the
uphill side of the log. To maintain complete control of the chain saw when cutting through the
log, release the cutting pressure near the end of
the cut without relaxing your grip on the chain
saw handles. Do not let the chain contact the
ground. After completing the cut, wait for the
saw chain to stop before you move the chain
saw. Always stop the motor before moving from
tree to tree.
HORIZONTAL CUT
Fig. 17
KICKBACK
Fig. 18
Sometimes it is impossible to avoid pinching
(with just standard cutting techniques) or difficult
to predict which way a log will settle when cut.
To avoid pinching while cutting, rotate or move
the log so that the pinch is eliminated.
23 - English
Fig. 19
OPERATION
BUCKING LOGS UNDER STRESS
See Figures 20 - 21.
When the log is supported along its entire length,
it should be cut from the top or overbucking.
When the log is supported on one end, cut 1/3
the diameter from the underside or underbucking. Then make the finishing cut by overbucking
to meet the first cut.
As the log is being cut, it will tend to bend. The saw
can become pinched or hung in the log if you make
the first cut deeper than 1/3 of the diameter of the log.
Give special attention to logs under stress to prevent the bar and chain from pinching.
When bucking on a slope, always stand on the uphill
side of the log as shown in figure 19. When “cutting
through,” to maintain complete control of the chain
saw, release the cutting pressure near the end of
the cut without relaxing your grip on the chain saw
handles. Do not let the chain contact the ground.
After completing the cut, wait for the saw chain
to stop before you move the chain saw. Always
stop the motor before moving from tree to tree.
LOG SUPPORTED AT ONE END:
FINISHING CUT
LOG SUPPORTED AT BOTH ENDS:
LOAD
1ST CUT 1/3 DIA
FINISHING CUT
OVERBUCKING
LOAD
1ST CUT
1/3 DIA
Fig. 20
TYPES OF CUTTING USED
See Figure 21.
OVERBUCKING
Begin on the top side of the log with the bottom
of the saw against the log; exert light pressure
downward. Note that the saw will tend to pull
away from you.
UNDERBUCKING
Begin on the under side of the log with the top
of the saw against the log; exert light pressure
upward. During underbucking, the saw will tend
to push back at you. Be prepared for this reaction
and hold the saw firmly to maintain control.
LIMBING
See Figure 22.
WARNING:
Never climb into a tree to limb or prune. Do
not stand on ladders, platforms, a log, or in
any position which can cause you to lose your
balance or control of the saw, which could result
in death or other serious personal injury.
UNDERBUCKING
Fig. 21
24 - English
OPERATION
Limbing is removing branches from a fallen tree.
Work slowly, keeping both hands on the chain
saw with a firm grip. Always make sure your
footing is secure and your weight is distributed
evenly on both feet.
Leave the larger support limbs under the tree to
keep the tree off the ground while cutting.
Limbs should be cut one at a time. Remove the
cut limbs from the work area often to help keep
the work area clean and safe.
Branches under tension should be cut from the
bottom up to avoid binding the chain saw.
Keep the tree between you and the chain saw
while limbing. Cut from the side of the tree
opposite the branch you are cutting.
PRUNING
See Figure 23.
Pruning is trimming limbs from a live tree.
Work slowly, keeping both hands on the chain
saw with a firm grip. Always make sure your
footing is secure and your weight is distributed
evenly on both feet.
Do not cut from a ladder, this is extremely
dangerous. Leave this operation for professionals.
Do not cut above chest height as a saw held
higher is difficult to control against kickback.
When pruning trees it is important not to make
the finishing cut next to the main limb or trunk
until you have cut off the limb further out to
reduce the weight. This prevents stripping the
bark from the main member.
Underbuck the branch 1/3 through for your first
cut.
Your second cut should overbuck to drop the
branch off.
Now make your finishing cut smoothly and
neatly against the main member so the bark will
grow back to seal the wound.
WARNING:
If the limbs to be pruned are above chest height,
hire a professional to perform the pruning.
Failure to do so could result in death or serious
personal injury.
CUT LIMBS ONE AT A TIME AND LEAVE SUPPORT LIMBS
LOAD
FIRST CUT
1/3 DIAMETER
FINISHING CUT
UNDER TREE UNTIL LOG IS CUT
SECOND CUT
Fig. 22
Fig. 23
SPRINGPOLE
Fig. 24
SPRINGPOLES
See Figure 24.
A springpole is any log, branch, rooted stump, or
sapling which is bent under tension by other wood
so that it springs back if the wood holding it is cut
or removed. On a fallen tree, a rooted stump has
a high potential of springing back to the upright
position during the bucking cut to separate the log
from the stump. Watch out for springpoles, they
are dangerous.
WARNING:
Springpoles are dangerous and could strike the
operator, causing the operator to lose control
of the chain saw. This could result in severe or
fatal injury to the operator.
25 - English
MAINTENANCE
WARNING:
To avoid serious personal injury, always remove
the battery pack from the product when cleaning or performing any maintenance.
WARNING:
Always wear eye protection with side shields
marked to comply with ANSI Z87.1, along with
hearing and head protection. Failure to do so
could result in objects being thrown into your
eyes resulting in possible serious injury.
WARNING:
When servicing, use only identical replacement
parts. Use of any other parts could create a
hazard or cause product damage.
NOTICE:
Periodically inspect the entire product for damaged, missing, or loose parts such as screws,
nuts, bolts, caps, etc. Tighten securely all fasteners and caps and do not operate this product
until all missing or damaged parts are replaced.
Please contact customer service or an authorized service center for assistance.
GENERAL MAINTENANCE
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 could result in serious personal
injury.
REPLACING BAR AND CHAIN
See Figures 25 - 33.
WARNING:
Remove the battery pack from the chain saw and
make sure the chain has stopped before you do
any work on the saw. Failure to do so may result
in accidental starting and possible serious injury.
WARNING:
To avoid serious personal injury, read and understand all the safety instructions in this section.
WARNING:
Never touch or adjust the chain while the motor
is running. The saw chain is very sharp; always
wear protective gloves when performing maintenance to the chain to avoid possible serious
lacerations.
Avoid 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.
26 - English
CAUTION:
Always wear gloves when handling the bar and
chain; these components are sharp and may
contain burrs.
MAINTENANCE
Remove the battery pack before you do any
work on the chain saw.
Rotate the chain cover lock knob counterclock-
wise until chain cover can be removed.
Remove the chain cover.
Rotate the chain tension assembly completely
counterclockwise.
Remove the bar and chain from mounting surface.
Remove the old chain from the bar.
Remove the screw and chain tension assembly
from the old bar.
Install the chain tension assembly on the new
bar by inserting the tab into one bar hole and
installing the screw through the other. Tighten
securely.
Lay out the new saw chain in a loop and
straighten any kinks. The cutters should face in
the direction of chain rotation. If they face the
opposite direction, turn the loop over.
Place the chain drive links into the bar groove
as shown.
NOTE: Make certain of direction of chain.
Position the chain so there is a loop at the back
of the bar.
TAB
SCREW
CHAIN
TENSION
ASSEMBLY
CHAIN TENSION
ADJUSTMENT RING
BAR
MOUNTS
CHAIN
COVER
CHAIN TENSION
ASSEMBLY
BAR
CHAIN TENSION
ADJUSTMENT
RING
CHAIN COVER
LOCK KNOB
Fig. 25
CHAIN COVER
LOCK KNOB
Fig. 26
CHAIN
CUTTERS
CHAIN ROTATION
CHAIN DRIVE LINKS
BAR
Fig. 27
Fig. 28
27 - English
MAINTENANCE
Hold the chain in position on the bar and place
the loop around the sprocket.
Fit the bar flush against the mounting surface
so that the bar mounts are in the long slot of
the bar.
Rotate the chain tension assembly clockwise a
few turns to take up enough slack in the chain
so it stays in position.
Replace the chain cover.
Rotate chain cover lock knob clockwise to
tighten. The bar should still be free to move for
tension adjustment.
Remove all slack from the chain by turning the
chain tension adjustment ring clockwise until
the chain seats snugly against the bar with the
drive links in the bar groove.
Lift the tip of the guide bar up to check for sag.
Release the tip of the guide bar and turn the
chain tensioning knob 1/2 turn clockwise.
Repeat this process until sag does not exist.
Hold the tip of the guide bar up and tighten the
chain cover lock knob.
The chain is correctly tensioned when there is no
sag on the underside of the guide bar, the chain is
snug, but it can be turned by hand without binding.
NOTE: If chain is too tight, it will not rotate. Loosen
the chain cover lock knob slightly and turn the chain
tension adjustment ring 1/4 turn counterclockwise.
Lift the tip of the guide bar up and retighten the
chain cover lock knob. Ensure that the chain will
rotate without binding.
CHAIN DRIVE LINKS
BAR GROOVE
CHAIN TENSION
ASSEMBLY
Fig. 29
CHAIN TENSION
ADJUSTMENT RING
CHAIN COVER
LOCK KNOB
Fig. 31
Fig. 32
SPROCKET
Fig. 30
28 - English
Fig. 33
MAINTENANCE
ADJUSTING THE CHAIN TENSION
See Figures 34 - 35.
WARNING:
Stop the motor and remove the battery pack.
Never touch or adjust the chain while the motor
is running. The saw chain is very sharp. Always
wear protective gloves when performing maintenance on the chain. Failure to follow these
instructions can result in serious personal injury.
Stop the motor and remove battery pack before
setting the chain tension.
Slightly loosen the chain cover lock knob.
Turn the chain tension adjustment ring clock-
wise to tension the chain.
NOTE: A cold chain is correctly tensioned when
there is no slack on the underside of the guide
bar, the chain is snug, and it can be turned by
hand without binding.
Rotate the chain cover lock knob clockwise to
secure.
Retension the chain whenever the flats on the drive
links hang out of the bar groove.
NOTE: During normal saw operation, the tem-
perature of the chain increases. The drive links
of a correctly tensioned warm chain will hang
approximately .050 in. out of the bar groove.
NOTE: New chains tend to stretch; check the chain
tension frequently and tension as required.
Use only low-kickback chain on this saw. This
fast-cutting chain will provide kickback reduction
when properly maintained.
For smooth and fast cutting, chain needs to be
maintained properly.
The chain requires sharpening when the wood chips
are small and powdery, the chain must be forced
through the wood during cutting, or the chain cuts
to one side. During maintenance of your chain,
consider the following:
Improper filing angle of the side plate can
increase the risk of a severe kickback.
Raker (depth gauge) clearance.
• Too low increases the potential for kickback.
• Not low enough decreases cutting ability.
If cutter teeth have hit hard objects such as nails
and stones, or have been abraded by mud or sand
on the wood, have service dealer sharpen chain.
FLATS ON DRIVE LINKS
Fig. 34
NOTICE:
A chain tensioned while warm may be too tight
upon cooling. Check the “cold tension” before
next use.
CHAIN MAINTENANCE
See Figures 36 - 37.
WARNING:
Remove the battery pack and make sure
the chain has stopped before you do any
work on the saw to avoid accidental starting and possible serious personal injury.
29 - English
≈ .050 in.
Fig. 35
RAKER (DEPTH GAUGE) CLEARANCE
.025 in.
Fig. 36
MAINTENANCE
NOTE: Inspect the drive sprocket for wear or
damage when replacing the chain. If signs of
wear or damage are present in the areas indicated, have the drive sprocket replaced by a
Ryobi Service dealer.
HOW TO SHARPEN THE CUTTERS
See Figures 38 - 40.
NOTE: If you do not fully understand the correct
procedure for sharpening the chain after reading the instructions that follow, have the saw
chain sharpened by a Ryobi Service dealer or
replace with a recommended low-kickback chain.
Be careful to file all cutters to the specified angles
and to the same length, as fast cutting can be
obtained only when all cutters are uniform.
INSPECT DRIVE
SPROCKET
TOP PLATE
Fig. 37
CUTTING CORNER
SIDE PLATE
WARNING:
The saw chain is very sharp, always wear protective gloves when performing maintenance
to the chain to prevent serious personal injury.
Properly tension the chain prior to sharpening.
Refer to Adjusting the chain tension section
earlier in this manual. Do all of your filing at the
mid-point of the bar.
Use a 5/32 in. diameter round file and holder.
Keep the file level with the top plate of the tooth.
Do not let the file dip or rock.
Using light but firm pressure, stroke towards the
front corner of the tooth.
Lift file away from the steel on each return stroke.
Put a few firm strokes on every tooth. File all left
hand cutters in one direction. Then move to the
other side and file the right hand cutters in the
opposite direction. Occasionally remove filings
from the file with a wire brush.
RIVET HOLE
HEEL
GULLET
LEFT HAND
CUTTERS
DEPTH GAUGE
TOE
Fig. 38
Fig. 39
WARNING:
Improper chain sharpening increases the potential of kickback, which can result in serious
personal injury.
WARNING:
Failure to replace or repair damaged chain can
cause serious injury.
30 - English
RIGHT HAND
CUTTERS
Fig. 40
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