OPERATOR'S MANUAL
18 VOLT
CORDLESS CHAIN SAW
P540
BATTERIES AND CHARGERS
SOLD SEPARATELY
Your Cordless Chain Saw has been engineered and manufactured to Ryobi’s high standard for dependability, ease of opera-
tion, 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 buying a Ryobi product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
n Introduction ..................................................................................................................................................................... 2
n General Safety Rules....................................................................................................................................................3-5
n Safety Rules for Charger ................................................................................................................................................. 6
n Symbols........................................................................................................................................................................7-8
n Features........................................................................................................................................................................... 9
n Assembly....................................................................................................................................................................... 10
n Operation..................................................................................................................................................................10-19
n Maintenance.............................................................................................................................................................20-26
n Troubleshooting............................................................................................................................................................. 27
n Parts Ordering / Service ................................................................................................................................................ 28
INTRODUCTION
This tool 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.
2
GENERAL SAFETY RULES
n Keep handles dry, clean, and free of oil and grease.
WARNING:
n Do not operate a chain saw that is damaged, improperly
adjusted,ornotcompletelyandsecurelyassembled.Chain
should stop turning when the trigger is released. If the
chain turns after the trigger has been released, have the
unit serviced by your nearest Ryobi service dealer.
Do not attempt to operate this unit until you have read
thoroughly and understand completely all instructions,
safety information, etc. contained in this manual. Failure
to comply can result in accidents involving fire, electric
shock, or serious personal injury.
n Checkfordamagedparts.Anypartorguardthathasbeen
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 condi-
tions that may affect its operation. A guard or other part
that is damaged should be properly repaired or replaced
byanauthorizedservicedealerunlessotherwiseindicated
elsewhere in this manual.
READ ALL INSTRUCTIONS
BASIC SAFETY PRECAUTIONS
n 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
combinationofthesepersonsmayresultfromone-handed
operation. A chain saw is intended for two-handed use.
n All chain saw service, other than the items listed in the
operationandmaintenancesections,shouldbeperformed
by your nearest Ryobi service dealer.
n Always be aware of what you are doing when using the
chain saw. Use common sense. Do not operate the chain
saw when you are tired, ill, or under the influence of al-
cohol, drugs, or medication.
n Do not use in the rain, snow or wet conditions.
n Always maintain a proper stance.
n Stay alert and pay attention to what you are doing. Use
n Do not adapt your powerhead to a bow guide or use it
to power any attachments or devices not listed for the
saw.
common sense when using this unit.
n Keep all parts of your body away from the saw chain
when the unit is running.
n Do not cut vines and/or small underbrush.
n Always carry the chain saw by the front handle with the
unit stopped and the guide bar and saw chain positioned
to the rear. When transporting your chain saw, use the
appropriate guide bar scabbard.
SAFETY APPAREL
n Wearsnugfittingclothing.Alwayswearheavy,longpants,
overalls, jeans or chaps made of cut resistant material or
onesthatcontaincutresistantinserts.Wearnon-slipsafety
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.
n Neverletanyoneuseyourchainsawwhohasnotreceived
adequate instructions in its proper use. This applies to
rentals as well as privately owned saws.
n Before you start the unit, make sure the saw chain is not
contacting any object.
n Stop the chain saw before setting it down. Do not leave
the unit running unattended.
n WeareyeprotectionwhichismarkedtocomplywithANSI
Z87.1 as well as hearing and head protection when oper-
ating this equipment.
n Toavoidaccidentalstarting, nevercarrytheunitwithyour
finger on the trigger.
n 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 periodi-
cally, and if damaged, have it replaced or repaired by an
authorized service dealer.
3
GENERAL SAFETY RULES
KICKBACK
See Figures 1 - 2.
ROTATIONAL
KICKBACK
n 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.
BAR SHOWN WITHOUT SAFE-T-TIP® NOSE GUARD FOR
ILLUSTRATION PURPOSES ONLY.
Fig. 1
n Thefollowingprecautionsshouldbefollowedtomini-
KICKBACK
DANGER ZONE
mize kickback:
1. Always grip the saw firmly with both hands. Hold the
saw firmly with both hands when the unit is running.
Place your right hand on the rear handle and 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.
Fig. 2
2. Make sure that the area in which you are cutting is free
from obstructions. Do not let the nose of the guide bar
contact a log, branch, fence, or any other obstruction
that could be hit while you are operating the saw.
3. Always cut with the unit running at full speed. Fully
squeeze the throttle trigger and maintain a steady
cutting speed.
4. Use replacement parts such as low kickback chain,
SAFE-T-TIP® anti-kickbacknoseguards, chainbrakes
andspecialguidebarsthatreducetherisksassociated
with rotational kickback.
Useonlythereplacementguidebarsandlowkickback
chains specified by the manufacturer for the saw.
PULL
n With a basic understanding of kickback, you can reduce
or eliminate the element of surprise. Sudden surprise
contributes to accidents.
n Keep proper footing and balance at all times.
n Do not cut above shoulder height or overreach when cutting.
n Keep the SAFE-T-TIP® anti-kickback nose guard properly
mounted on the guide bar to prevent rotational kickback.
n Follow the sharpening and maintenance instructions for
the saw chain.
n 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.
PUSH
Fig. 3
4
GENERAL SAFETY RULES
UNDERSTANDING YOUR CHAIN SAW SAFETY
DEVICES
See Figure 4.
IN THE CUTTING/WORK AREA
n Do not operate a chain saw in a tree, on a ladder, or scaf-
fold; this is extremely dangerous.
®
n Keep ALL children, bystanders, visitors, and animals out
of the work area while starting or cutting with the chain
saw.
SAFE-T-TIP Anti-Kickback Nose Guard
The SAFE-T-TIP® prevents kickback from happening, be-
cause it covers the tip of the bar where kickback is gener-
ated. Never attempt any kind of cutting where the SAFE-T-
TIP® would have to be removed from the bar tip.
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.
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.
n Neverstartcuttinguntilyouhaveaclearworkarea,secure
footing, and a planned retreat path from the falling tree.
Cluttered area invite injuries.
n Do not expose the chain saw to rain.
n Do not use the chain saw in damp or wet locations.
Low kickback saw chain is chain that has met the kickback
performance requirements of ANSI B175.1 - 1991 (Amer-
ican National Standard for Power Tools - Gasoline-Powered
Chain Saws-Safety Requirements) when tested on the rep-
resentative sample of chain saws below 3.8 c.i.d. specified
in ANSI B175.1 - 1991.
n Do not use the chain saw near flammable liquids, gases,
or in any type of explosive atmosphere.
n 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 bal-
ance.
As saw chains are sharpened during their useful life, they
lose some of the low kickback qualities and extra caution
should be used.
n When cutting a limb that is under tension, be alert for
spring back so that you will not be struck when the ten-
sion in the wood fibers is released.
GUIDE BARS
Generally, guide bars with small radius tips have somewhat
lower kickback potentials.
n Do not force the chain saw. The job can be performed
better and safer at the rate for which it was intended.
n 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.
When making a replacement, be sure to order one of the
Ryobi bars listed for the saw in this operator's manual. The
proper size SAFE-T-TIP® nose guard comes installed on the
bar. Use only guide bars that have a provision for mounting
the SAFE-T-TIP®.
n Do not use the chain saw for purposes not intended.
n 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
placethescabbardonthebarandchainorstorethechain
saw in a carry case.
SAFE-T-TIP®
n 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.
Fig. 4
5
SAFETY RULES FOR CHARGER
CHARGER SAFETY
BATTERY SAFETY
n Save these instructions. This manual contains impor-
tant Rules for Safe Operation and operating instruc-
tions for charger.
n Before using battery charger, read all instructions and
cautionary markings in this manual, on battery charger,
and product using battery charger.
n To reduce risk of injury, charge only nickel-cadmium
type rechargeable batteries. Other types of batteries
may burst, causing personal injury and damage.
n Do not expose charger to wet or damp conditions.
n Use of an attachment not recommended or sold by the
battery charger manufacturer may result in a risk of fire,
electric shock, or injury to persons.
n Battery operated units do not have to be plugged into
an electrical outlet; therefore, they are always in oper-
ating condition. Be aware of possible hazards even
when unit is not operating.
n 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.
n A battery pack must be recharged only with the speci-
fied charger for the battery pack. A charger that may
be suitable for one type of battery pack may create a
risk of fire when used with another battery pack. Use
battery pack only with charger listed.
n To reduce risk of damage to charger body and cord,
pull by charger plug rather than cord when discon-
necting charger.
MODEL
P540
BATTERY PACK (P100)
130255004
CHARGER (P110)
1423701, 140237023
or 140237021
n To reduce the risk of explosion and possible injury, Do n Make sure cord is located so that it will not be stepped
not place battery units or their batteries near fire or heat.
on, tripped over, or otherwise subjected to damage or
stress.
n An extension cord should not be used unless abso-
lutely necessary. Use of improper extension cord could
result in a risk of fire and electric shock. If extension
cord must be used, make sure:
n 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.
n A damaged battery pack is subject to explosion. To
avoid serious personal injury, properly dispose of a
damaged battery pack.
a. That pins on plug of extension cord are the same
number, size and shape as those of plug on charger.
b. That extension cord is properly wired and in good
electrical condition; and
c. That wire size is large enough for AC ampere rating
of charger as specified below:
n Batteries vent hydrogen gas and can explode in the
presence of a source of ignition, such as a pilot light.
To reduce the risk of serious personal injury, never use
any cordless product in the presence of open flame. An
exploded battery pack can propel debris and chemi-
cals. If exposed, flush with water immediately.
Cord Length (Feet)
Cord Size (AWG)
25' 50' 100'
16 16 16
n Do not charge unit in a damp or wet location. Following
NOTE: AWG = American Wire Gage
this rule will reduce the risk of electric shock.
n Do not operate charger with a damaged cord or plug.
If damaged, have replaced immediately by a qualified
serviceman.
n Do not operate charger if it has received a sharp blow,
been dropped, or otherwise damaged in any way; take
it to a qualified serviceman.
n Do not disassemble charger; take it to a qualified
serviceman when service or repair is required. Incorrect
reassembly may result in a risk of electric shock or fire.
n To reduce risk of electric shock, unplug the charger
from outlet before attempting any maintenance or
cleaning. Turning off controls will not reduce this risk.
n Disconnect charger from power supply when not in
use.
n Risk of electric shock. Do not touch uninsulated por-
tion of output connector or uninsulated battery termi-
nal.
n Save these instructions. Refer to them frequently and
use them to instruct others who may use this unit. If
you loan someone this unit, loan them these instruc-
tions also.
n For best results, your battery unit should be charged
in a location where the temperature is more than 50°F
(10°C) but less than 100°F (38°C). Do not store outside
or in vehicles.
n Under extreme usage or temperature conditions, bat-
tery pack leakage may occur. If liquid comes in contact
with your skin, wash immediately with soap and water,
then neutralize with lemon juice or vinegar. If liquid gets
into your eyes, flush them with clean water for at least
10 minutes, then seek immediate medical attention.
n Do not dispose of batteries in a fire. The cell may
explode. Batteries should be recycled, consult your
local waste authority for information regarding available
recycling and/or disposal options.
n When battery pack is not in use, keep it away from
other metal objects like: paper clips, coins, keys, nails,
screws, or other small metal objects that can make a
connection from one terminal to another. Shorting the
battery pack terminals together may cause sparks,
burns, or a fire.
6
SYMBOLS
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL
NAME
EXPLANATION
V
A
Volts
Voltage
Current
Amperes
Hertz
Hz
W
Frequency (cycles per second)
Power
Watt
min
Minutes
Time
Alternating Current
Type or a characteristic of current
Type or a characteristic of current
Rotational speed, at no load
Designates Double Insulated Construction tools
Direct Current
n0
No Load Speed
Class II Construction
Revolutions or Reciprocation Per Minute
.../min
Revolutions, strokes, surface speed, orbits etc.
per minute
Safety Alert Symbol
Indicates danger, warning or caution. It means
attention!!! Your safety is involved.
Wet Conditions Alert
Do not expose to rain or use in damp
locations.
Read Your Operator’s Manual
Your manual contains special messages to bring
attention to potential safety concerns, machine
damage as well as helpful operating and servicing
information. Please read all the information care-
fully to avoid injury and machine damage.
Wear Eye, Hearing, and Head Protection
Wear eye protection which is marked to comply
with ANSI Z87.1 as well as hearing and head pro-
tection when operating this equipment.
Wear Safety Footwear
Wear Gloves
Wear non-slip safety footwear when using this
equipment.
Wearnon-slip,heavy-dutyprotectivegloveswhen
handling the pruner.
Keep Children and Pets Away
Beware of Kickback
Danger- Keep children and pets away.
DANGER! Beware of kickback.
7
SYMBOLS
Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning.
Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL
NAME
EXPLANATION
SAFE-T-TIP
The SAFE-T-TIP® nose guard on your bar nose
prevents rotational kickback.
Bar nose contact
Holding saw
Avoid bar nose contact.
Hold saw properly with both hands.
WARNING:
The operation of any power tool can result in foreign objects being thrown into your eyes, which
can result in severe eye damage. Before beginning tool operation, always wear safety goggles
or safety glasses with side shields and a full face shield when needed. We recommend Wide
Vision Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always
wear eye protection which is marked to comply with ANSI Z87.1.
Thepurposeofsafetysymbolsistoattractyourattentiontopossibledangers.Thesafetysymbols,andtheexplanations
with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate
any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.
SYMBOL 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. It may also be used to alert against unsafe practices that may cause property
damage.
NOTE:
Advises you of information or instructions vital to the operation or maintenance of the equipment.
SAVE THESE INSTRUCTIONS
NOTE: Save these instructions. Refer to them frequently and use them to instruct others who may use this unit. If you loan
someone this unit, loan them these instructions also.
8
FEATURES
PRODUCT SPECIFICATIONS
Motor......................................................................................................................................................................18 Volt DC
Bar Length......................................................................................................................................................................10 in.
Charger Input ....................................................................................................................................... 120 V, 60 Hz, AC only
Charge Rate .................................................................................................................................................................1 Hour
Replacement Bar Part Number..................................................................................................... 671256002 or 671667002
Replacement Chain Part Number ..................................................................................................... 6958301 or 690583002
NOTE: This saw was designed for occasional light duty use and has some limitations as to what it can cut.
SCABBARD
CHAIN OIL
TANK CAP
REAR
HANDLE
BAR
SAFE-T-TIP®
CHAIN
BATTERY PACK
(NOT INCLUDED)
FRONT HANDLE
HAND GUARD
TRIGGER RELEASE
BUTTON
BATTERY PACK
(NOT INCLUDED)
HEX KEY
HEX KEY
STORAGE AREA
TRIGGER
Fig. 5
9
ASSEMBLY
UNPACKING
This product has been shipped completely assembled.
WARNING:
If any parts are missing do not operate this tool until the
missing parts are replaced. Failure to do so could result
in possible serious personal injury.
n Carefully remove the tool and any accessories from the
box. Make sure that all items listed in the packing list are
included.
n Inspect the tool carefully to make sure no breakage or
damage occurred during shipping.
WARNING:
n Do not discard the packing material until you have care-
Do not attempt to modify this tool or create accesso-
ries not recommended for use with this tool. Any such
alteration or modification is misuse and could result in a
hazardous condition leading to possible serious personal
injury.
fully inspected and satisfactorily operated the tool.
n If any parts are damaged or missing, please call
1-800-525-2579 for assistance.
PACKING LIST
Cordless Chain Saw with Scabbard
WARNING:
Wrench
Bar and Chain Oil
To prevent accidental starting that could cause serious
personal injury, always remove the battery pack from the
tool when assembling parts.
Lanyard (not included in combo)
Operator’s Manual
Warranty Registration Card
OPERATION
APPLICATIONS
WARNING:
You may use this tool for the following purposes:
nLimbing and pruning branches from trees.
nFelling small trees up to 5 in. (127 mm) diameter.
nBucking the fallen tree into shorter lengths.
Do not allow familiarity with tools to make you care-
less. Remember that a careless fraction of a second is
sufficient to inflict serious injury.
WARNING:
CAUTION:
Always wear safety goggles or safety glasses with side
shields when operating tools. Failure to do so could re-
sult in objects being thrown into your eyes, resulting in
possible serious injury.
To prevent damage to the battery pack, remove the
battery pack from the charger immediately if no LED
comes on. Return the battery pack and charger to your
nearest service center for checking or replacing. Also,
if you are removing the battery pack from the charger
and no LEDs are on, return both the battery pack and
the charger to your nearest service center. Do not insert
another battery pack into the charger. A damaged charger
may damage a battery pack.
WARNING:
Do not use any attachments or accessories not recom-
mended by the manufacturer of this tool. The use of at-
tachments or accessories not recommended can result
in serious personal injury.
10
OPERATION
nIf both yellow and green LEDs come on, this indi-
LED FUNCTIONS OF CHARGER
cates a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
LED WILL BE ON TO INDICATE STATUS OF
CHARGER AND BATTERY PACK:
See Figure 6.
nRed LED on = Fast charging mode.
nGreen LED on = Fully charged and in maintenance charge
mode.
nGreen LED on = When battery pack is inserted into
charger, indicates hot battery pack or that battery pack
is out of normal temperature range.
nAfter normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.
nThe battery pack will become slightly warm to the
touch while charging. This is normal and does not
indicate a problem.
nYellow and Green LEDs on = Deeply discharged or
defective battery pack.
nDo not place the charger and battery pack in an area of
extreme heat or cold. They will work best at normal room
temperature.
nNo LED on = Defective charger or battery pack.
CHARGING THE BATTERY PACK
NOTE: The charger and battery pack should be placed
in a location where the temperature is more than 50°F
but less than 100°F.
The battery pack for this tool has been shipped in a low
charge condition to prevent possible problems. Therefore,
you should charge it until the green LED on the front of the
charger comes on.
nWhen batteries become fully charged, unplug the
charger from power supply and remove the battery
pack.
NOTE: Batteries will not reach full charge the first time they
are charged. Allow several cycles (operation followed by
recharging) for them to become fully charged.
BATTERY PACK
CHARGING A COOL BATTERY PACK
CHARGER
P110
If battery pack is within normal temperature range, the red
LED on charger will come on.
NOTE: If the charger does not charge the battery pack
undernormalcircumstances,returnboththebatterypackand
charger to your nearest Ryobi Authorized Service Center for
electrical check.
nCharge the battery pack only with a recommended
charger.
nMake sure the power supply is normal household
voltage, 120 volts, 60 Hz, AC only.
nConnect the charger to the power supply.
nPlace the battery pack in the charger aligning raised rib
on the battery pack with the groove in the charger.
YELLOW
LIGHT
GREEN
LIGHT
RED LIGHT
nPress down on the battery pack to be sure contacts on
the battery pack engage properly with contacts in the
charger.
n
n
RED LIGHT “ON” INDICATES FAST CHARGING MODE
YELLOW AND GREEN LIGHTS “ON” INDICATES
CONTROL CHARGE OR POSSIBLE FAULTY BATTERY
nNormally the red LED on charger will come on. This
indicates the charger is in fast charging mode.
nRed LED should remain on for approximately 1 hour
then the green LED will come on. Green LED on
indicates battery pack is fully charged and charger is
in maintenance charge mode.
n
GREEN LIGHT “ON” INDICATES FULLY CHARGED
Fig. 6
NOTE: The green LED will remain on until the
battery pack is removed from the charger or charger is
disconnected from the power supply.
11
OPERATION
CHARGING A HOT BATTERY PACK
CHAIN OIL SYSTEM
See Figure 8.
When using the tool continuously, the batteries in the battery
pack will become hot. You should let a hot battery pack cool
down for approximately 30 minutes before attempting to
recharge. When the battery pack becomes discharged and
is hot, this will cause the green LED to come on instead of
the red LED. After 30 minutes, reinsert the battery pack in
the charger. If the green LED continues to remain on, return
batterypacktoyournearestRyobiAuthorizedServiceCenter
for checking or replacing.
n Use Homelite Bar and Chain Oil. 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.
n Carefully pour the bar and chain oil into the tank.
n Check and fill the oil tank when battery is recharged, or
as needed.
NOTE: This situation only occurs when continuous use of
the tool causes the batteries to become hot. It does not
occur under normal circumstances. Refer to “CHARGING
A COOL BATTERY PACK” for normal recharging of batter-
ies. If the charger does not charge your battery pack under
normal circumstances, return both the battery pack and
charger to your nearest Ryobi Authorized Service Center
for electrical check.
n Depress the oil tank cap several times to pump the oil to
the chain before starting the saw.
n Depress the oil tank cap every 20-30 seconds while cut-
ting to keep the chain lubricated.
NOTE: It is normal for oil 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.
TO INSTALL BATTERY PACK
See Figure 7.
n Place the battery pack in your chain saw. Align raised
rib on battery pack with groove in chain saw’s battery
port.
n 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 BATTERY PACK
See Figure 7.
Locate latches on side of battery pack and depress both
sides to release the battery pack from the chain saw.
BATTERY
PORT
BATTERY
PACK
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.
LATCHES
Fig. 7
CAUTION:
Removebatterypackfromunit.FilloiltankwithHomelite
Bar and Chain Oil before starting the chain saw. Failure
to lubricate the chain will cause damage to the bar and
chain.
Fig. 8
12
OPERATION
STARTING AND STOPPING THE CHAIN SAW
See Figure 9.
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
n Place the chain saw on a flat bare surface and make sure
no objects or obstructions are in immediate vicinity which
could come in contact with the bar and chain.
TRIGGER RELEASE
BUTTON
n Press and hold the trigger release button. This makes the
trigger operational.
n Press and hold the trigger, release the trigger release
button and continue to squeeze the trigger for continued
operation.
TRIGGER
STOPPING THE CHAIN SAW
n Release the trigger to stop the chain saw.
TRIGGER RELEASE
BUTTON
n Upon release of the trigger, the trigger release button will
be automatically reset to the lock position.
This cordless chain saw is not designed for cutting trees
larger than 5 in. (127 mm) in diameter.
This cordless chain saw is designed for limbing and pruning
type cutting, as well as cutting trees up to 5 in. (127 mm) in
diameter only.
Do not attempt to make any cut that would require removal
of the SAFE-T-TIP®.
PREPARATION FOR CUTTING
PROPER GRIP ON HANDLES
See Figures 10 - 12.
TRIGGER
Fig. 9
Referto“ImportantSafetyInstructions”earlierinthismanual
for appropriate safety equipment.
n Wear non-slip gloves for maximum grip and protection.
n 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.
13
OPERATION
WARNING:
Never use a left-handed (cross-handed) grip, or any
stance which would place your body or arm across the
chain line.
n 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
likelytobebroken(byakickbackorothersuddenreaction
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.
Fig. 10
WARNING:
Do not operate the throttle 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.
Fig. 11
CHAIN LINE
Fig. 12
14
OPERATION
PROPER CUTTING STANCE
See Figure 13.
n Weight should be balanced with both feet on solid
CHAIN LINE
ground.
n Keep left arm with elbow locked in a "straight arm" posi-
STRAIGHT ARM
POSITION
tion to withstand any kickback force.
n Your body should always be to the left of the chain line.
n Thumb should be on underside of handlebar.
BASIC CUTTING PROCEDURE
Practice cutting a few small logs using the following tech-
nique to get the "feel" of using the saw before you begin a
major sawing operation.
Fig. 13
n Take the proper stance in front of the wood with the saw
off.
n Always cut with both feet on solid ground to prevent be-
n Squeeze the trigger and let the chain accelerate to full
ing pulled off balance.
speed before entering the cut.
n Do not cut above chest height, as a saw held higher is
n Begin cutting with the saw against the log.
difficult to control against kickback forces.
n Keep the unit running the entire time you are cutting,
n Do not fell trees near electrical wires or buildings. Leave
maintain a steady speed.
this operation for professionals.
n 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.
n Cut only when visibility and light are adequate for you to
see clearly.
n Release the trigger as soon as the cut is completed, al-
lowing the chain to stop. If you run the saw without a
cutting load, unnecessary wear can occur to the chain,
bar, and unit.
TREE FELLING
Unusual Hazardous Tree Felling Conditions
Do not fell trees during periods of high wind or heavy precipi-
tation. Wait to do your cutting until the hazard has ended.
n Do not put pressure on the saw at the end of the cut.
WARNING:
WORK AREA PRECAUTIONS
n Cut only wood or materials made from wood, no sheet
metal, no plastics, no masonry, no non-wood building
materials.
Do not cut down trees having an extreme lean or large
trees that have rotten limbs, loose bark, or hollow trunks.
Have these trees pushed or dragged down with heavy
equipment, then cut them up.
n 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.
WARNING:
Do not cut trees near electrical wires or buildings.
n 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.Duringbuckingoperations,keepaminimumdistance
of 15 feet (4.5 m) 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
doesmakecontactwithanyutilityline,theutilitycompany
should be notified immediately.
WARNING:
Check the tree for damaged or dead branches that could
fall and hit you during felling.
15
OPERATION
WARNING:
PLANNED LINE OF FALL
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!
n 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.
90°
SAFE
RETREAT
ZONE
PLANNED PATH OF SAFE RETREAT 135° FROM PLANNED LINE
OF FALL
n 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
noobstructionsinyourplannedpathofretreat.Clearpath
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 14.
SAFE
RETREAT
ZONE
135°
PLANNED
LINE OF FALL
45°
45°
90°
n Before felling is started, consider the force and direction
of the wind, the lean and balance of the tree, and the lo-
cation of large limbs. These things influence 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.
135°
SAFE
RETREAT
ZONE
n 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.
Fig. 14
n Remove dirt, stones, loose bark, nails, staples, and wire
from the tree where felling cuts are to be made.
n 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 15.
HINGE
2 IN. (5 CM) OR 1/10 DIA
NOTCH -
APPROX. 1/3
DIAMETER OF
TRUNK
BACK CUT
2 IN. (5 CM)
Fig. 15
16
OPERATION
n Felling Backcut. The backcut is always made level and
n
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 elimi-
nated.
horizontal, and at a minimum of 2 inches (5 cm) above
the horizontal cut of the notch. See Figures 15 - 16.
n Never cut through to the notch. Always leave a band of
wood between the notch and backcut (approximately 2
inches (5 cm) 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 15 - 16.
n 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 17.
NOTCH
BACK CUT
NOTE: When bucking or felling with a wedge, it may
be necessary to remove the SAFE-T-TIP® anti-kickback
device to allow the bar to be drawn through the cut.
After the cut is complete, the tip should be reinstalled
immediately.
HINGE
Fig. 16
n 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.
WEDGE
Fig. 17
BUCKING
See Figures 18 - 21.
KICKBACK
Bucking is the term used for cutting a fallen tree to the de-
sired log length.
nAlways make sure your footing is secure and your weight
is distributed evenly on both feet.
nCut only one log at a time.
nSupport small logs on a saw horse or another log while
Fig. 18
bucking.
nKeep a clear cutting area. Make sure that no objects
can contact the guide bar nose and chain during cutting,
this can cause kickback. To avoid the danger, keep the
SAFE-T-TIP® anti-kickbackdeviceattachedwhilecutting.
Refer to “Precautions Against Kickback” earlier in this
manual.
nWhen 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
chainsawhandles.Donotletthechaincontacttheground.
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.
Fig. 19
17
OPERATION
BUCKING LOGS UNDER STRESS
LOG SUPPORTED AT ONE END:
LOAD
See Figures 20 - 21.
When the log is supported along its entire length, it should
be cut from the top or overbucking.
FINISHING CUT
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.
1ST CUT
1/3 DIA
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. See Figure 19.
LOG SUPPORTED AT BOTH ENDS:
LOAD
1ST CUT 1/3 DIA
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.
FINISHING CUT
OVERBUCKING
Fig. 20
UNDERBUCKING
Begin on the under side of the log with the top of the saw
against the log; exert light pressure upward. During under-
bucking, the saw will tend to push back at you. Be pre-
pared for this reaction and hold the saw firmly 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.
UNDERBUCKING
Fig. 21
18
OPERATION
LIMBING
See Figure 22.
3
2
Limbing is removing branches from a fallen tree.
1
n 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.
n Leave the larger support limbs under the tree to keep the
tree off the ground while cutting.
4
n 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.
CUT LIMBS ONE AT A TIME AND LEAVE SUPPORT LIMBS
UNDER TREE UNTIL LOG IS CUT
Fig. 22
n Branches under tension should be cut from the bottom
up to avoid binding the chain saw.
SECOND CUT
nKeep the tree between you and the chain saw while limb-
ing. Cut from the side of the tree opposite the branch you
are cutting.
LOAD
PRUNING
See Figure 23.
Pruning is trimming limbs from a live tree.
nWork 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.
FIRST CUT
1/3 DIAMETER
nDo not cut from a ladder, this is extremely dangerous.
Leave this operation for professionals.
FINISHING CUT
nDo not cut above chest height as a saw held higher is
Fig. 23
difficult to control against kickback.
nWhenpruningtreesitisimportantnottomakethefinishing
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.
SPRINGPOLE
nUnderbuck the branch 1/3 through for your first cut.
nYour second cut should overbuck to drop the branch
off.
nNow make your finishing cut smoothly and neatly against
the main member so the bark will grow back to seal the
wound.
Fig. 24
WARNING:
WARNING:
If the limbs to be pruned are above chest height, hire a
professional to perform the pruning.
Springpolesaredangerousandcouldstriketheoperator,
causingtheoperatortolosecontrolofthechainsaw.This
could result in severe or fatal injury to the operator.
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.
19
MAINTENANCE
WARNING:
GENERAL MAINTENANCE
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.
When servicing, use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
WARNING:
WARNING:
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.
WARNING:
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 a Ryobi Authorized Service Center.
To avoid serious personal injury, always remove the
battery pack from the tool when cleaning or performing
any maintenance.
BATTERY PACK REMOVAL AND
PREPARATION FOR RECYCLING
To preserve natural resources, please
BATTERIES
Thebatterypackforthistoolisequippedwithnickel-cadmium
rechargeablebatteries.Lengthofservicefromeachcharging
will depend on the type of work you are doing.
Y
C
C
L
E
recycle or dispose of batteries
properly.
R R B R C
The batteries in this tool have been designed to provide
maximum trouble-free life. However, like all batteries, they
will eventually wear out. Do not disassemble battery pack
and attempt to replace the batteries. Handling of these
batteries, especially when wearing rings and jewelry, could
result in a serious burn.
This product contains nickel-cadmium
batteries. Local, state or federal laws
may prohibit disposal of nickel-cadmium
batteries in ordinary trash.
™
N i C d
0
8
0
8
.
.
8
2
Consult your local waste authority for information regarding
available recycling and/or disposal options.
To obtain the longest possible battery life, we suggest the
following:
nRemove the battery pack from the charger once it is fully
WARNING:
charged and ready for use.
Upon removal, cover the battery pack’s termi-
nals with heavy-duty adhesive tape. Do not at-
tempt to destroy or disassemble battery pack or
remove any of its components. 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 fire and/or serious injury.
For battery storage longer than 30 days:
nStore the battery pack where the temperature is below
80°F.
nStore battery packs in a "discharged" condition.
20
MAINTENANCE
REPLACING BAR AND CHAIN
See Figures 25 - 29.
ADJUSTING
PIN
SPROCKET
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
BAR
WARNING:
WASHER
The safety instructions in this section are to protect the
user from serious personal injury.
CAUTION:
CHAIN
Always wear gloves when handling the bar and chain;
these components are sharp and may contain burrs.
CHAIN TENSION
CHAIN
COVER
SCREW
PIN HOLE
CHAIN
COVER
Fig. 25
WARNING:
Nevertouchoradjustthechainwhilethemotorisrunning.
The saw chain is very sharp; always wear protective
gloves when performing maintenance to the chain to
avoid possible serious lacerations.
n Remove the battery pack before you do any work on the
chain saw.
n 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.
n Remove the bar and chain from the mounting surface.
n Remove the old chain from the bar.
CHAIN DRIVE
LINKS
n 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.
BAR
GROOVE
Fig. 26
n 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 flush 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.
CHAIN
TENSIONING
SCREW
RECOMMENDED BAR AND CHAIN
COMBINATIONS
Bar Part Number - 10 in. (254 mm)
671256002 or 671667002
Fig. 27
Chain Part Number
6958301 or 690583002
21
MAINTENANCE
nReplace the chain cover, washer and chain cover screw.
Tighten the chain cover screw finger tight only. The bar
must be free to move for tension adjustment.
LIFT THE TIP OF
THE GUIDE BAR
UP TO CHECK FOR
SAG
nRemove all the slack from the chain by turning the chain
tensioning screw clockwise until the chain seats snugly
against the bar with the drive links in the bar groove.
nLift the tip of the guide bar up to check for sag. Release
the tip of the guide bar and turn the chain tensioning
screw 1/2 turn clockwise. Repeat this process until sag
does not exist.
nHoldthetipoftheguidebarupandtightenthebarmount-
ing screw securely.
Fig. 28
nChain 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 screw slightly and turn tension adjuster 1/4
turn counterclockwise. Lift the tip of the guide bar up
and retighten chain cover screw securely. Assure that
the chain will rotate without binding.
nPlace the hex key back into the storage area.
CHAIN TENSION
See Figures 30 - 31.
HEX KEY
n Stop the engine before setting the chain tension. Make
sure the guide bar screw is loosened to finger tight, turn
the chain tensioner clockwise to tension the chain. Refer
to “Replacing the Bar and Chain” earlier in this manual
for additional information.
Fig. 29
A cold chain is correctly tensioned when there is no slack
on the underside of the guide bar, the chain is snug, but
it can be turned by hand without binding.
n Chain must be re-tensioned whenever the flats on the
drive links hang out of the bar groove.
APPROX. .050 (1.25
Fig. 31
n Duringnormalsawoperation,thetemperatureofthechain
willincrease.Thedrivelinksofacorrectlytensionedwarm
chain will hang approximately .050 in. (1.25 mm) out of
the bar groove.
FLATS
NOTE: New chain tends to stretch, check chain tension
frequently and tension as required.
CAUTION:
Fig. 30
Chain tensioned while warm, may be too tight upon
cooling. Check the “cold tension” before next use.
22
MAINTENANCE
CHAIN MAINTENANCE
See Figures 32 - 33.
CUTTING
CORNER
CAUTION:
TOP PLATE
SIDE PLATE
Remove the battery pack and make sure the chain has
stopped before you do any work on the saw.
DEPTH GAUGE
RIVET HOLE
Use only low-kickback chain on this saw. This fast-cutting
chain will provide kickback reduction when properly main-
tained.
HEEL
TOE
GULLET
Fig. 32
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:
CHECK FOR WEAR
OR DAMAGE
n Improper filing angle of the side plate can increase the
risk of a severe kickback.
n Raker (depth gauge) clearance.
n Too low increases the potential for kickback.
n Not low enough decreases cutting ability.
n 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.
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.
Fig. 33
HOW TO SHARPEN THE CUTTERS
See Figures 34 - 35.
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.
n Wear gloves for protection. Properly tension the chain
prior to sharpening. Refer to “Chain Tension Section”
earlier in this manual. Do all of your filing at the mid-point
of the bar.
Fig. 34
n Use a 5/32 in. diameter round file and holder.
LEFT HAND
CUTTERS
n Keep the file level with the top plate of the tooth. Do not
let the file dip or rock.
n Using light but firm pressure, stroke towards the front
corner of the tooth.
n Lift file away from the steel on each return stroke.
n 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. Oc-
casionally remove filings from the file with a wire brush.
RIGHT HAND
CUTTERS
Fig. 35
23
MAINTENANCE
WARNING:
CORRECT TOP PLATE INCORRECT TOP PLATE FILING
FILING ANGLE
ANGLE
Improper chain sharpening increases the potential of
kickback.
LESS
THAN 30°
MORE
THAN 30°
30°
WARNING:
Failure to replace or repair damaged chain can cause
serious injury.
Fig. 36
WARNING:
CORRECT SIDE
PLATE FILING
ANGLE
INCORRECT SIDE PLATE
FILING ANGLE
Thesawchainisverysharp,alwayswearprotectivegloves
when performing maintenance to the chain.
HOOK
BACKWARD
SLOPE
TOP PLATE FILING ANGLE
See Figure 36.
80°
n CORRECT30°-Fileholdersaremarkedwithguidemarks
to align file properly to produce correct top plate angle.
n LESS THAN 30° - For Cross Cutting.
n MORE THAN 30° - Feathered Edge Dulls Quickly.
Fig. 37
SIDE PLATE ANGLE
See Figure 37.
RAKER CLEARANCE
.025 in. (0.6 mm)
n CORRECT - 80o Produced automatically if correct diam-
eter file is used in file holder.
n HOOK - “Grabs” and dulls quickly. Increases potential
of KICKBACK.
Results from using a file with diameter too small, or file
held too low.
n BACKWARD SLOPE - Needs too much feed pressure,
Fig. 38
causes excessive wear to bar and chain.
Results from using a file with diameter too large, or file
held too high.
DEPTH GAUGE CLEARANCE
See Figure 38.
nThe depth gauge should be maintained at a clearance of
.025 in. (0.6 mm). Use a depth gauge tool for checking
the depth gauge clearances.
nEvery time the chain is filed, check the depth gauge clear-
ance.
24
MAINTENANCE
n Replace the SAFE-T-TIP® on the bar nose.
Use a Flat File and a Depth Gauge Jointer to lower all
gauges uniformly. Depth gauge jointers are available in
.020 in. to .035 in. (0.5 mm to 0.9 mm). Use a .025 in. (0.6
mm) depth gauge jointer. After lowering each depth gauge,
restore original shape by rounding the front. Be careful not
to damage adjoining drive links with the edge of the file.
See Figures 39 - 40.
NOTE: The locking tab fits in the recessed hole in the
bar.
n Tighten the screw with your finger.
n From the finger-tight position, tighten the screw an ad-
ditional 3/4 of a turn using a wrench.
Depth gauges must be adjusted with the flat file in the same
direction the adjoining cutter was filed with the round file.
Use care not to contact cutter face with flat file when ad-
justing depth gauges.
DEPTH GAUGE JOINTER
GUIDE BAR MAINTENANCE
See Figure 41.
When the guide bar shows signs of wear, reverse it on the
saw to distribute the wear for maximum bar life. The bar
should be cleaned every day of use and checked for wear
and damage.
Feathering or burring of the bar rails is a normal process
of bar wear. Such faults should be smoothed with a file as
soon as they occur.
FLAT FILE
Fig. 39
A bar with any of the following faults should be replaced.
n Wear inside the bar rails which permits the chain to lay
over sideways.
RESTORE ORIGINAL
SHAPE BY ROUNDING
THE FRONT
n Bent guide bar.
n Cracked or broken rails.
n Spread rails.
In addition, guide bars with a sprocket at their tip must be
lubricated weekly with a grease syringe to extend the guide
bar life. Using a grease syringe, lubricate weekly in the lu-
bricating hole.
Fig. 40
Turn the guide bar and check that the lubrication holes and
chain groove are free from impurities.
REVERSING THE GUIDE BAR
See Figures 41 - 43.
n Remove the SAFE-T-TIP® mounting screw.
n Remove the SAFE-T-TIP® from the bar.
LUBRICATING HOLE
n Remove the chain from the bar and turn the bar over.
NOTE: Bottom of bar should not be on top.
Fig. 41
n Replace the chain on the bar. Refer to “Assembling the
Bar and Chain” earlier in this manual for specific infor-
mation.
25
MAINTENANCE
MOUNTING SCREW
LOCKING RIVET
CAUTION:
Remove the battery pack and make sure the chain has
stopped before you do any work on the saw.
WARNING:
Although the guide bar comes with a SAFE-T-TIP® anti-
kickback device already installed, you need to check the
tightness of the mounting screw before each use.
SAFE-T-TIP® NOSE GUARD MAINTENANCE
See Figures 42 - 43.
Tighten the mounting screw of the nose guard as instructed
below. These are specially hardened screws. If the screw
cannot be installed tightly, replace both the screw and the
SAFE-T-TIP® before further operation. Do not replace with
an ordinary screw.
SAFE-T-TIP®
Fig. 42
In addition to preventing chain contact with solid objects at
the nose of the bar, the SAFE-T-TIP® also helps keep the
chain away from abrasive surfaces such as the ground. Keep
it on the right hand side of the bar, where it will be between
the chain and the ground during flush with ground cutting.
TIGHTEN 3/4
OF A TURN
The mounting screw requires a 5/16 in. wrench (or adjust-
able wrench) to achieve the recommended tightness of 35
to 45 in. lb. (4-5 Nm). A tightness within this range can be
achieved by the following method.
n Tighten the screw with your finger.
n From the finger-tight position, tighten the screw an ad-
ditional 3/4 of a turn using a wrench.
Fig. 43
MOUNTING SAFE-T-TIP® NOSE GUARD
See Figures 42 - 43.
n Mount the SAFE-T-TIP® on the bar nose.
NOTE: The tab fits in the recessed hole in the bar.
n Tighten the screw with your finger.
n From the finger-tight position, tighten the screw an ad-
ditional 3/4 of a turn using a wrench.
TRANSPORTING AND STORING
See Figure 44.
n Do not store or transport the chain saw when it is running.
The chain saw should always be idle before storing or
transporting.
Fig. 44
n Alwaysplacetheguidebarscabbardonthebarandchain
before storing or transporting the chain saw. Use caution
to avoid the sharp teeth of the chain.
n Clean the chain saw thoroughly before storing. Store the
chain saw indoors, in a dry place that is locked and/or
inaccessible to children.
n Keep away from corrosive agents such as garden chem-
icals and de-icing salts.
26
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
1. Tension chain. Refer to “Chain Tension”
earlier in this manual.
1. Check chain tension for
over tight condition
Bar and chain running hot
and smoking.
2. Check oil tank.
2. Chain oil tank empty.
1. Retension chain, Refer to “Chain
Tension” earlier in this manual.
2. Refer to “Assembling the Bar and
Chain” earlier in this manual.
3. Inspect guide bar and chain for
damage.
1. Chain tension too tight.
2. Check guide bar and chain
assembly.
3. Check guide bar and chain
for damage.
Motor runs, but chain is
not rotating.
IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM CONTACT YOUR AUTHORIZED SERVICE DEALER.
27
OPERATOR'S MANUAL
18 VOLT
CORDLESS CHAIN SAW
P540
• SERVICE
Now that you have purchased your tool, should a need ever exist for repair parts or
service, simply contact your nearest Ryobi Authorized Service Center. Be sure to provide
all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest Ryobi
complete list of Authorized Service Centers.
• MODEL NO. AND SERIAL NO.
The model number of this tool will be found on a plate attached to the motor housing.
Please record the model number and serial number in the space provided below.
• HOW TO ORDER REPAIR PARTS
When ordering repair parts, always give the following information:
P540
• MODEL NUMBER
• SERIAL NUMBER
RYOBI TECHNOLOGIES, INC.
1428 Pearman Dairy Road, Anderson, SC 29625
Post Office Box 1207, Anderson, SC 29622-1207
Phone 1-800-525-2579
983000-538
6-05
|