Ryobi CCW180LBC User manual

OPERATOR’S MANUAL
18 VOLT CHAIN SAW
CCW180LBC
SAVE THIS MANUAL FOR FUTURE REFERENCE
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.

2
Introduction........................................................................................................................................2
General Safety Rules .....................................................................................................................3-5
SpecicSafetyRules ........................................................................................................................6
Symbols..........................................................................................................................................7-8
Features ............................................................................................................................................9
Assembly.........................................................................................................................................10
Operation....................................................................................................................................10-18
Maintenance...............................................................................................................................19-24
Troubleshooting...............................................................................................................................25
Warranty ..........................................................................................................................................26
Parts Ordering and Service ............................................................................................... Back Page
TABLE OF CONTENTS
INTRODUCTION
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.

3
GENERAL SAFETY RULES
READ ALL INSTRUCTIONS
BASIC SAFETY PRECAUTIONS
Do not operate a chain saw with one hand! Use
armgripwiththumbsandngers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inuence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
cover.
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nger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. Inspect
the battery charger cord periodically, and if
damaged, have it replaced or repaired by an
authorized service dealer.
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 re, electric shock, or
serious personal injury.
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 switch trigger is released. If the chain
turns after the switch 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
overreach.
Do not adapt your chain saw or use it to power
any attachments or devices not listed for the saw.
Do not cut vines and/or small underbrush.
SAFETY APPAREL
Wearsnugtting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 loose tting jewelry, short pants,
sandals,orgobarefoot.Donotwearloosetting
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 standards as well as hearing and head
protection when operating this equipment.

4
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:
 1.Holdthesawrmlywithbothhandswhenthe
motor is running. Place your right hand on the
rear handle and your left hand on the front
handlewithyourthumbsandngersencircling
thechainsawhandles.Arm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 switch trigger and maintain
a steady cutting speed.
4. Use replacement parts such as low kickback
chain and special guide bars that reduce the
risks associated with rotational kickback.
Use only the replacement guide bars and low
kickbackchainsspeciedbythemanufacturer
for the saw.
With a basic understanding of kickback, you
can reduce or eliminate the element of surprise.
Sudden surprise contributes to accidents.
Keep proper footing and balance at all times.
Do not cut above shoulder 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.
GENERAL SAFETY RULES
Fig. 1
Fig. 2
Fig. 3
ROTATIONAL
KICKBACK
KICKBACK
DANGER ZONE
PULL
PUSH

5
IN THE CUTTING/WORK AREA
Do not operate a chain saw in a tree, on a ladder,
rooftop 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 areas 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ammable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bersisreleased.
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.
Do not use the chain saw for purposes not
intended.
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 cover 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.
GENERAL SAFETY RULES
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certied
as low kickback chain.
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 the saw in this operator’s
manual.

6
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 hazards 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
speciedchargerforthebatterypack.Acharger
that may be suitable for one type of battery pack
maycreateariskofrewhenusedwithanother
battery pack. Use battery pack only with charger
listed.
For use with 18V nickel-cadmium and 18 V
lithium-ion battery packs.
To reduce the risk of explosion and possible
injury, Do not place battery units or their batteries
nearre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.
Do not crush, drop or damage battery pack. Do
not use a battery pack or charger that has been
dropped or received a sharp blow. A damaged
battery is subject to explosion. Properly dispose
of a dropped or damaged battery immediately.
Batteries 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ame.
An exploded battery pack can propel debris
and chemicals. If exposed, ush 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 10°C but less than 37°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.Ifliquidgetsintoyoureyes,ush
them with clean water for at least 10 minutes,
then seek immediate medical attention.
Do not dispose of batteries in a re. 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re.
Save these instructions. Refer to them frequently
and use them to instruct others who may use this
tool. If you loan someone this tool, loan them
these instructions also.
GENERAL SAFETY RULES

7
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
Safety Alert Indicates a potential personal injury hazard.
Read Operator’s Manual To reduce the risk of injury, user must read and
understand operator’s manual before using this product.
Eye, Hearing, and Head
Protection
Always wear eye protection with side shields marked
to comply with standards, along with 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.
The following signal words and meanings are intended to explain the levels of risk associated with
this product.
SYMBOL SIGNAL MEANING
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.
CAUTION: (Without Safety Alert Symbol) Indicates a situation that may
result in property damage.
SYMBOLS

8
FEATURES
PRODUCT SPECIFICATIONS
Motor ...................................................................................................................................... 18 Volt DC
Bar Length.......................................................................................................................................10 in.
Replacement Bar
Part Number ............................................................................................... 671256003 or 671834007
Replacement Chain
Part Number ............................................................................................... 690583001 or 690583002
Battery Pack ............................................................................................................................ BPL-1815
Compatible Battery Pack..................................................................... ABP1801 / ABP1802 / BPL-1820
Charger.................................................................................................................................... BCL-1800
Compatible Charger (only for ABP1801 / ABP1802) ..............................................................ACR-1800
NOTE:
This saw was designed for occasional light duty use and has some limitations as to what it can cut.
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 non-slip, heavy-duty protective gloves when
handling the chain saw.
Wear Safety Footwear Wear non-slip safety footwear when using this
equipment.
Keep Bystanders
Away Keep all bystanders and animals at least 15m away.
Li - Ion Recycle Symbols
Thisproductuseslithium-ionornickel-cadmiumbatteries.
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.
V Volts Voltage
Direct Current Type or a characteristic of current
SYMBOLS

9
KNOW YOUR CHAINSAW
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.
Fig. 4
CHAIN OIL
TANK CAP
REAR
HANDLE
FRONT HANDLE
BAR
CHAIN BATTERY PACK
HEX KEY HEX KEY
STORAGE AREA
HAND GUARD
SWITCH TRIGGER
BATTERY PACK
LOCK-OUT
BUTTON
SAFETY
COVER
FEATURES

10
WARNING:
Do not allow familiarity with this product to make
you careless. Remember that a careless fraction
ofasecondissufcienttoinictseriousinjury.
WARNING:
Always wear eye protection with side shields
marked to comply with standards, along with
hearing and head protection. Failure to do so
could result in objects being thrown into your
eyes resulting in possible serious injury.
UPACKING
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
Ryobi Customer Service for assistance.
PACKING LIST
Chain Saw with Cover
Hex Key
Bar and Chain Lubricant
Battery Pack
Charger
Operator’s Manual
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modication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.
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.
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 call
Ryobi Customer Service or contact an authorized
service center for assistance.
ASSEMBLY

11
CAUTION:
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.
CHAIN OIL SYSTEM
See Figure 6.
Use Ryobi Bar and Chain Lubricant. It is
formulated to perform over a wide temperature
range with no dilution required.
NOTE: Do not use dirty, used or otherwise
contaminated oils. Damage may occur to the
bar or chain.
Carefully pour the bar and chain oil into the tank.
Check and fill the oil tank when battery is
recharged, or as needed.
Depress the oil tank cap several times to pump
the oil to the chain before starting the saw.
Depress the oil tank cap every 20-30 seconds
while cutting to keep the chain lubricated.
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.
APPLICATIONS
You may use this product for the following purposes:
Limbing and pruning branches from trees
Felling small trees up to 7 in. diameter
Bucking the fallen tree into shorter lengths
This product will accept Ryobi One + 18 V lithiumion
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.
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 lock-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
battery 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.
CAUTION:
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.
Fig. 6
Fig. 5
BATTERY
PACK
LATCHES
BATTERY
PORT
OPERATION

12
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:
Placethechainsawonaatbaresurfaceand
make sure no objects or obstructions are in
immediate vicinity which could come in contact
with the bar and chain.
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 not designed for cutting
trees larger than 7 in. in diameter.
This cordless chain saw is designed for limbing
and pruning type cutting, as well as cutting trees
up to 7 in. in diameter only.
PREPARATION FOR CUTTING
PROPER GRIP ON HANDLES
See Figures 8 - 10.
Refer to IMPORTANT SAFETY INSTRUCTIONS
earlier in this manual for appropriate safety
equipment.
Wear non-slip gloves for maximum grip and
protection.
Holdthesawrmly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.
Fig. 7
LOCK-OUT
BUTTON
SWITCH
TRIGGER
LOCK-OUT BUTTON
SWITCH
TRIGGER
OPERATION

13
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ngers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ngers
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.
CHAIN LINE Fig. 10
Fig. 9
Fig. 8
OPERATION

14
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notied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
higher is difcult to control against kickback
forces.
Do not fell trees near electrical wires or buildings.
Leave this operation for professionals.
Cut only when visibility and light are adequate
for you to see clearly.
TREE FELLING
See Figures 12 - 15.
Unusual Hazardous Tree Felling Conditions
Do not fell trees during periods of high wind or
heavy precipitation. Wait to do your cutting until
the hazard has ended.
WARNING:
Do not cut down trees having an extreme lean
or trees that have rotten limbs, loose bark, or
hollow trunks. Have these trees pushed or
dragged down with heavy equipment, then cut
them up.
DANGER:
Electrocution hazard. Do not cut trees or
branches near power lines or electrical wires.
Contact with power lines or live electrical wires
will result in serious personal injury or possible
death.
PROPER CUTTING STANCE
See Figure 11.
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.
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 adequate
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 operations, keep
a minimum distance of 5m between workers.
Trees should not be felled in a manner that
Fig. 11
STRAIGHT ARM
POSITION
CHAIN LINE
OPERATION

15
WARNING:
Do not cut trees or branches near buildings,
which may result in serious injuries or property
damage.
WARNING:.
Check the tree for damaged or dead branches
that could fall and hit you during felling.
WARNING:
Periodically glance at the top of the tree during
the backcut to assure the tree is going to fall in
the desired direction.
WARNING:
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!
 Felling a tree - When bucking and felling perations
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notied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 path of safe
retreat approximately 135° from planned line of
fall. The retreat path should extend back and
diagonally to the rear of the expected line of fall.
See Figure 12.
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
inuencethedirectioninwhichthetree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 13.
90°
PLANNED PATH OF SAFE RETREAT 135° FROM PLANNED
LINE OF FALL
PLANNED LINE OF FALL
SAFE
RETREAT
ZONE
PLANNED
LINE OF FALL
Fig. 12
SAFE
RETREAT
ZONE
45°
45°
90°
135°
135° SAFE
RETREAT
ZONE
HINGE
2 in. OR 1/10 DIA
NOTCH -
APPROX. 1/3
DIAMETER OF
TRUNK
BACK CUT
2 in. Fig. 13
OPERATION

16
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 Figures
13 - 14.
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 13 - 14.
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 15.
 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.
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.
BUCKING
See Figures 16 - 19.
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
Precautions Against 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
NOTCH
BACK CUT
Fig. 15
Fig. 14
KICKBACK
Fig. 16
HINGE
WEDGE
Fig. 17
OPERATION

17
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.
Sometimes it is impossible to avoid pinching
(withjuststandardcuttingtechniques)ordifcult
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.
BUCKING LOGS UNDER STRESS
See Figures 18 - 19.
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nishingcutbyoverbuckingtomeetthe
rst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rst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gure18.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.
TYPES OF CUTTING USED
See Figure 19.
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rmlytomaintaincontrol.
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.
LOAD
FINISHING CUT
1ST CUT
1/3 DIA
LOG SUPPORTED AT ONE END:
LOG SUPPORTED AT BOTH ENDS:
FINISHING CUT
1ST CUT 1/3 DIA
LOAD
Fig. 18
Fig. 19
OVERBUCKING
UNDERBUCKING
OPERATION

18
LIMBING
See Figure 20.
Limbing is removing branches from a fallen tree.
Work slowly, keeping both hands on the chain
saw with a rm 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 21.
Pruning is trimming limbs from a live tree.
Work slowly, keeping both hands on the chain
saw with a rm 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difculttocontrolagainstkickback.
When pruning trees it is important not to make
thenishing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rst
cut.
Your second cut should overbuck to drop the
branch off.
Nowmakeyournishing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.
SPRINGPOLES
See Figure 22.
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.
FINISHING CUT
FIRST CUT
1/3 DIAMETER
SECOND CUT
LOAD
SPRINGPOLE
Fig. 22
Fig. 21
Fig. 20
CUT LIMBS ONE AT A TIME AND LEAVE SUPPORT LIMBS
UNDER TREE UNTIL LOG IS CUT
4
1
3
2
OPERATION

19
WARNING:
When servicing, use only identical replacement
parts. Use of any other parts may create a
hazard or cause product damage.
WARNING:
Toavoid serious personal injury, alwaysremovethe
battery pack from the product when cleaning or
performing any maintenance.
GENERAL MAINTENANCE
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 call
Ryobi Customer Service or contact an authorized
service center for assistance.
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.
WARNING:
Do not at any time let brake uids, gasoline,
petroleum-based products, penetrating oils, etc.,
come in contact with plastic parts.Chemicals can
damage, weaken or destroy plastic which may
result in serious personal injury.
Only the parts shown on the parts list are intended
to be repaired or replaced by the customer. All
other parts should be replaced at an Authorized
Service Center.
BATTERY PACK REMOVAL AND
PREPARATION FOR RECYCLING
WARNING:
Upon removal, cover the battery pack’s
terminals with heavy-duty adhesive tape. Do not
attempt to destroy or disassemble battery pack
or remove any of its components. Lithium-ion
and nickel-cadmium batteries must be recycled
or disposed of properly. Also, never touch both
terminals with metal objects and/or body parts
as short circuit may result. Keep away from
children. Failure to comply with these warnings
couldresultinreand/orseriousinjury.
MAINTENANCE

20
REPLACING BAR AND CHAIN
See Figures 23 - 27.
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:
The safety instructions in this section are to
protect the user from serious personal injury.
CAUTION:
Always wear gloves when handling the bar and
chain; these components are sharp and may
contain burrs.
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.
Remove the battery pack before you do any work
on the chain saw.
Remove the hex key from the storage area and
use it to remove the chain cover screw, washer
and chain cover from the chain saw.
Remove the bar and chain from mounting
surface.
Remove the old chain from the bar.
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.
Position the chain so there is a loop at the back
of the bar. Hold the chain in position on the bar
and place the loop around the sprocket of the
chain saw. Fitthebarushagainstthemounting
surface so that the bar stud is in the long slot of
the bar.
NOTE: When placing the bar on the bar stud,
assure that the adjusting pin is in the chain
tension pin hole.
RECOMMENDED BAR AND CHAIN
COMBINATIONS
Bar Part Number - 10 in.
671256002 or 671834007
Chain Part Number 671256003 or 690583001
Fig. 23
Fig. 24
Fig. 25
CHAIN
TENSIONING
SCREW
BAR
GROOVE
CHAIN DRIVE
LINKS
ADJUSTING
PIN
BAR
WASHER
CHAIN
COVER
SCREW
CHAIN
COVER
CHAIN
CHAIN TENSION
PIN HOLE
SPROCKET
MAINTENANCE