EarthQuake CS4518 User manual

Operator's Manual
Original Operating
Instructions
Chainsaw
CS4518
,_ WARNING
BEFORE USING OUR PRODUCTS, READTHIS MANUAL
CAREFULLYTO UNDERSTANDTHE PROPER USEOF
YOUR UNIT,
Get parts online at
www, geteorthquake, com
P/N: 142148
Rev. 12/05/12
© 2013 Ardisam, Inc.
All Rights Reserved

Operator'sManual
CS4518 Chainsaws
INTRODUCTION
THANKYOU ...
for purchasing a chainsaw from Earthquake ®. We have worked to ensure that this chainsaw meets high standards for usability and
durability. With proper care, your chainsaw will provide many years of service. Take the time to read this manual carefully to learn
how to correctly operate and maintain your chainsaw. This manual should be considered a permanent part of your chainsaw. Due
to continuous effort to perfect our product, certain procedures and specifications are subject to change without notice.
CONTENTS
Introduction .......................................................................................................................................................................................................................................2
Warnings and Safety Precautions .........................................................................................................................................................................................3-10
Features .............................................................................................................................................................................................................................................11
Specifications ...................................................................................................................................................................................................................................12
Assembly ...........................................................................................................................................................................................................................................13
Operation ...................................................................................................................................................................................................................................14-15
Maintenance and Storage ....................................................................................................................................................................................................16-19
Troubleshooting and Repair ................................................................................................................................................................................................19-20
Parts Breakdown ......................................................................................................................................................................................................................21-25
Warranty .....................................................................................................................................................................................................................................26-27
serial number
REGISTRATION, SERVICE AND MAINTENANCE LOG
Record the model number and serial number in the space provided
for easy reference. Warranty is valid only if the completed registration
is received by Ardisam within 30 days of purchase. You can register
your warranty online by visiting www.getearthquake.com. Ifyou do
not have a computer, call our customer service department at (800)
345-6007 Mondays through Fridays from 8 a.m. to 5 p.m. CST.
Owner's Name:
Owner's Address:
City:
Model Number:
Date of Purchase:
Notes:
State/Province:
Serial Number: Zip Code/Postal Code:
FEDERAL EMISSION INFORMATION
Earthquake ®warrants to the retail purchaser, that this small, off-road engine was designed, built and equipped to conform at the
time of initial sale to all applicable regulations of the U.S.Environmental Protection Agency (EPA). All weights, specifications, and
features are approximate and are subject to change without notice. Due to continuous product improvements, product image may
not be exact items.
This manual may contain information for several models. Read and keep this manual for future reference. This manual con-
tains important information on SAFETY, ASSEMBLY, OPERATION, AND MAINTENANCE. The owner must be certain that all the
product information is included with the unit. This information includes the MANUAL, the REPLACEMENT PARTS and the WAR-
RANTIES. This information must be included to make sure state laws and other laws are followed. This manual should remain
with the engine even if it is resold.
2 Check for parts online at www.getearthquake.¢om or call 800-345-6007 M-F 8-5

Operator's Manual
CS4518 Chainsaws
WARNINGS AND SAFETY PRECAUTIONS
OPERATOR'S RESPONSIBILITY
Accurate assembly and safe and effective useof the machine is
the operator's responsibility.
•Readand follow all safety instructions.
•Carefully follow all assembly instructions.
•Maintain the machine according to directions and schedule
included in this operator's manual.
•Ensurethat anyone who usesthe machine isfamiliar with all
controls and safety precautions.
WARNING
WARNING INDICATES A HAZARD WHICH, IF NOT
AVOIDED, COULD RESULTIN DEATH OR SERIOUS IN=
JURY AND/OR PROPERTYDAMAGE,
CAUTION
CAUTION INDICATES YOU CAN BE HURT OR YOUR
EQUIPMENT DAMAGED IF THE SAFETY INSTRUC-
TIONS THAT FOLLOW THIS SIGNAL WORD ARE NOT
OBEYED,
SPECIAL SAFETY MESSAGES
Your manual contains special messages to bring attention to
potential safety concerns, machine damage as well as helpful
operating and servicing information. Read all the information
carefully to avoid injury and machine damage.
NOTE: General information is given throughout the manual
that may help the operator in the operation or service of the
machine.
Thissymbol points out important safety instruc-
tions which if not followed could endanger your
personal safety,
BEFORE OPERATING ENGINE:
WARN iNG
READ ENTIRE OPERATING AND MAINTENANCE
INSTRUCTIONS FOR THIS PRODUCT, FAILURE TO
FOLLOW INSTRUCTIONS COULD RESULTIN SERIOUS
INJURY OR DEATH, OPERATETHE ENGINE ACCORDING
TOTHE SAFETY INSTRUCTIONS OUTLINED HEREAND
INSERTED THROUGHOUT THE TEXT, ANYONE WHO
USESTHIS PRODUCT MUST READTHE INSTRUCTIONS
AND BE FAMILIAR WITH THE CONTROLS,
IMPORTANT
INDICATES HELPFUL INFORMATION FOR PROPERAS=
SEMBLY, OPERATION, OR MAINTENANCE OF YOUR
EQUIPMENT,
WARNING
CALIFORNIA PROPOSITION 65 WARNING
ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER RE=
PRODUCTIVE HARM,
WARNING
YOU MUST READ, UNDERSTAND AND COMPLY WITH
ALL SAFETY AND OPERATING INSTRUCTIONS IN
THIS MANUAL BEFORE ATTEMPTING TO SETUP AND
OPERATEYOUR MACHINE,
FAILURE TO COMPLY WITH ALL SAFETY AND
OPERATING INSTRUCTIONS CAN RESULT IN LOSSOF
MACHINE CONTROL, SERIOUS PERSONAL INJURY TO
YOU AND/OR BYSTANDERS,AND RISKOF EQUIPMENT
AND PROPERTYDAMAGE, THETRIANGLE IN THETEXT
SIGNIFIES IMPORTANT CAUTIONS OR WARNINGS
WHICH MUST BE FOLLOWED,
_ Intended Use/
Foreseeable Misuse
This machine is a saw that utilizes a toothed, rotating chain
powered by an IC engine to be used in the cutting of cordwood.
This product shall not be used for any other purpose.
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Operator'sManual
CS4518 Chainsaws
GENERAL SAFETY RULES
•Read, understand, and follow all instructions on the machine
and in the manual(s). Bethoroughly familiar with the controls
and the proper use of the machine before starting.
•Use this equipment for its intended purpose only.
•Familiarize yourself with all of the safety and operating
decals on this equipment and on any of its attachments or
accessories.
•Do not put hands or feet near or under rotating parts.
•Only allow responsible individuals who are familiar with the
instructions to operate the machine. Do not allow children
to operate this machine. Do not allow adults to operate the
machine without proper instruction.
•Thoroughly inspect the area where the machine is to be
used and remove all foreign objects. Your equipment can
propel small objects at high speed causing personal injury
or property damage. Stay away from breakable objects, such
as house windows, automobiles, greenhouses, etc.
•Wear appropriate clothing such as a long-sleeved shirt or
jacket. Also wear long trousers or slacks. Do not wear shorts.
Never wear sandals, sneakers, or open shoes, and never
operate the machine with bare feet.
•Do not wear loose clothing or jewelry.They can get caught in
moving parts. Always keep hands, feet, hair and loose clothing
away from any moving parts on engine and machine.
•Always wear safety goggles or safety glasses with side shields
when operating the machine to protect your eyes from
foreign objects which can be thrown from the unit. Always
wear a protective hearing device.
•Always wear work gloves and sturdy footwear. Wear
footwear that will improve footing on slippery surfaces.
Leather work shoes or short boots work well for most people.
These will protect the operator's ankles and shins from small
sticks, splinters, and other debris.
•It is advisable to wear protective headgear to prevent the
possibility of being struck by small flying particles, or being
struck by low hanging branches, twigs, or other objects
which may be unnoticed by the operator.
•Do not operate the machine without proper guards or other
safety protective devices in place.
•See manufacturer's instructions for proper operation and
installation of accessories. Only use accessories approved
by the manufacturer.
•Operate only in daylight or good artificial light.
•Do not operate product when fatigued or under the
influence of alcohol, drugs or other medication which
can cause drowsiness or affect your ability to operate this
machine safely.
•Never operate machine in wet grass. Always be sure ofyour
footing; keep a firm hold on the handle and walk; never run.
•Watch for traffic whenever you are operating near, or when
crossing roads.
•Ifthe equipment should start to vibrate abnormally, stop the
engine (motor), disconnect the spark plug wire and prevent
it from touching the spark plug. Check immediately for cause.
Vibration is generally a warning of trouble. If the noise or
vibrations of the machine increase, stop immediately and
perform an inspection.
•Never leave the machine unattended when the engine is
running. Remove the wire from the spark plug.
•Regularly inspect the machine. Make sure parts are not bent,
damaged or loose.
•Temperature of muffler and nearby areas may exceed 1S0° F
(65°C).Allow muffler and engine areas to cool before touching.
Never pick up or carry the machine while the engine isrunning.
•Prolonged exposure to noise and vibration from gasoline engine-
powered equipment should be avoided. Take intermittent
breaks and/or wear ear protection from engine noise as well as
heavy work gloves to reduce vibration in the hands.
•Keep all screws, nuts and bolts tight.
•Do not transport the machine from one place to another
with the engine running.
•When moving the packaged machine, always do so with a
partner.
•Check local regulations for age restrictions on use of this
machine.
PRODUCT=SPECIFIC SAFETY RULES
•After striking a foreign object, stop the engine. Remove the
wire from the spark plug. Inspect the chainsaw for damage. If
damaged, repair before starting and operating the chainsaw.
•The cutting chain of the chainsaw should not rotate when
the engine is idling. If it does rotate when engine is idling,
contact Earthquake ®for instructions.
•If an object becomes lodged in the saw, turn engine off,
remove the wire from the spark plug and secure, allow to
cool before attempting to remove the foreign object.
•The clutch will transfer maximum power after about two
hours of normal operation. During this break-in period clutch
slippage may occur. The clutch should be kept free of oil or
other moisture for efficient operation.
•Never cut in high wind, bad weather, when visibility is poor,
or in very low temperatures. Always check the tree for dead
branches that could fall during the felling operation.
•Never start cutting until you have a clear work area, secure
footing and a planned retreat path away from the falling
tree.
4 Check for parts online at www.getearthquake.¢om or call 800-345-6007 M-F 8-5

Operator'sManual
CS4518 Chainsaws
Always hold the chainsaw firmly with both hands when the
engine is running. Use a firm grip with thumb and fingers
encircling the chainsaw handles.
When carrying from one place to another, always stop the
engine and hold the saw with the guide bar and saw chain
behind you and the muffler away from your body.
•Always inspect the chainsaw for worn, loose, or damaged parts.
Never operate achainsaw that has been damaged, improperly
adjusted, or is not completely and securely assembled.
•Use extreme caution when cutting small brush and saplings.
Thinner material may be caught by the chain and could whip
back toward you or pull you off balance.
o
o
When cutting limbs under tension, stay alert for"spring back"
so you are not struck when the tension in the wood fibers is
released.
Always shut offthe engine before setting the chainsaw down.
Keep the handles dry, clean, and free of lubricants, oils and fuel.
Kickback
Kickback may occur when the guide bar nose or
L_J tip comes into contact with a foreign object, or
,_,_:_:_ when the saw kerf (gap in the wood being cut)
,d:._::_ d_-_:®closes in on the bar and pinches the saw chain.
, Tip contact in some cases may cause a lightning-
fast reverse action, kicking the guide bar up and
back toward the operator.
Pinching the saw chain along the top of the
guide bar may push the guide bar and the saw
unit backward toward the operator.
Either of these reactions may cause the operator
to lose control of the chainsaw, which could
result in serious personal injury or death.
Do not rely exclusively on the safety devises
built into your saw. As a chainsaw user, it is
your responsibility to understand the inherent
dangers of chainsaw use and the precautions
necessary to minimize those dangers.
Precaution s to Avoid Kickback:
• Always grip the chainsaw firmly with both
hands; the right hand on the rear handle, and
the left hand on the forward grip.
_:_°_°_-':_ •Make certain the area in which you are cutting
.................... is free from obstructions. Do not let the guide
bar nose come into contact with a log, branch, rock or other
objects while cutting. Such contact could result in a kickback.
Always make cuts at high engine speeds.
•Do not over-reach or cut above shoulder height.
•Always maintain a sharp and clean saw chain. Follow
manufacturer's sharpening and maintenance instructions for
the saw chain.
•Only use replacement bars and chains specified by the
manufacturer or an appropriate equivalent.
Sawing
•This saw is provided for the sole intended purpose of cutting
wood. Do not cut other materials with this saw.
•Do not attach other tools or accessories to the output shaft of
the power unit. Doing so will void the manufacturer's warranty.
•Do not apply excessive pressure to force the saw through the
cut. Run the engine at full throttle and apply only light pressure.
•Always maintain a firm footing.
•Never cut from a stepladder or while in a tree.
•Never use the guide bar as a means to lift, pry, move or split
objects.
•Never mount the chainsaw on a fixed stand.
•If the guide bar and saw chain become pinched in acut, do not
race the engine or pull the saw out of the cut by force. Use a
wedge or lever to open the cut and pull the saw free.
Felling a Tree
Felling refers to the process of cutting down a standing tree.
Numerous factors must be taken into consideration when
felling atree. First consider the environmental factors which will
determine the felling direction:
•Wind is a major determining factor of felling direction.
•Location and number of heavy branches and the lean ofthe tree.
•Ease of bucking and clean-up after felling
•Nearby standing timber in which the felled tree could hang up.
•Location of power, telephone and data utilities, buildings,
roads, bodies of water, property lines, etc.
•Wood structure and condition (i.e. rotten heartwood or core).
•Keep all bystanders at least 2-1/2 tree lengths away from the
base of the tree to be cut. This area isconsidered a danger zone
and must be avoided before and during the felling operation.
Retreat Path
Plan two (2) retreat paths away from the felling direction of the
tree. Do not retreat in the opposite direction from the falling tree.
Instead, retreat at a 45-degree angle to either side.
•Clear the retreat paths of all obstacles.
•Place all excess tools and equipment a safe distance from the
tree, but not in the retreat paths.
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Operator'sManual
CS4518 Chainsaws
Felling Notch
idirection The felling notch is the first cut when felling a
tree. The notch will act asa hinge and will direct
the tree to fall in the desired direction.
1) Begin the felling notch by lining up the guide bar perpendicular
to the desired felling direction.
2) Make a downward cut at 45-degress to a depth of about 1/5
to 1/4 of the overall diameter of the tree.
3) Finish the notch by making a horizontal cut perpendicular to
the desired felling direction.
4) Remove the resultant piece.
Felling Cut
Alert others in thearea of imminent danger of the falling tree. Double
check that no one has entered the area in the felling direction.
1) Begin the felling cut by making a horizontal cut perpendicular
to the intended felling direction and approximately 1-2 inches
above the bottom of the felling notch.
2) Leave approximately 1/10 of the tree's diameter uncut. This
will form the hinge.
3) Drive plastic or wooden wedges into the felling cut to control
the fall.
4) As the tree begins to fall, alert others and immediately
evacuate the area around the tree.
Limbing a Felled Tree
"Limbing'refers to removing the limbs from a fallen tree. There isan
extremely high danger of kickbackduring the limbing operation. Do
not work with the noseof the g uide bar,asth iscou Idcausea kickback.
Use extreme caution and avoid contact between the nose of the bar
and the log or other limbs. Do not stand on the log while limbing it as
the log may roll as limbs are removed and the center of gravity shifts.
Start limbing by removing limbs from the top side of the log,
leaving limbs on the bottom to support the log up offthe ground.
Limbs under tension may pinch the guide bar and saw chain.
Shut off the engine and lift the limb to remove the bar safely.
Bucking a Log
"Bucking" is the cross-cut operation of cutting a log into usable
sections. Do not stand on the log while bucking as it may roll.
When bucking on aslope, stand uphill of the log in case it begins
to roll unexpectedly. Cut only one log at a time.
•When bucking small logs, place them in a"V"shaped bucking
horse to keep them at aworking level. Never allow abystander
to hold the log. Never hold the log with your leg or foot.
•To bucka log on flatground, make perpendicular cuts through
about half of the diameter of the log. Roll the log and finish
the cuts from the other side.
WARNING
INEXPERIENCED USERS SHOULD NEVER ATTEMPT TO
CUT TREES WITH ROTTEN HEARTWOOD (THE CORE OF
THETREE). THERE ISAN INCREASED RISKTHATTHETREE
COULD SNAP OR SPLIT UNEXPECTEDLY DURING THE CUT.
ALSO CHECK FOR DEAD OR ROTTEN LIMBS PRIOR TO
BEGINNING THE CUT. DEAD LIMBS CAN VIBRATE LOOSE
FROM THE TREE AND FALL,STRIKING THE OPERATOR.
CAUTION
LOGS AND LIMBS UNDERTENSION CAN SPRING BACK
WHEN CUT LOOSE. THIS LIGHTNING FAST ACTION
COULD CAUSE A LOSS OF CONTROL OF THE CHAINSAW,
CAUTION
ONLY TRAINED AND EXPERIENCED PROFESSIONALS
SHOULD FELL TREES NEAR OVERHEAD UNES AND
BUILDINGS, A SLIGHT MISJUDGMENT OF WIND
DIRECTION OR NATURAL LEAN OF A TREE COULD
RESULT iN MAJOR PROPERTY DAMAGE.
CAUTION
DO NOT CUT THROUGH THE HINGE. CUTTING
THROUGH THE HINGE INCREASES THE RISK OF
LOSING CONTROL OF THE FELLING DIRECTION.
•Tobucka pillowed or supported log, always make a relieving cut
through about 1/3 the dia meter of the log from the compressed
side. Finish with a bucking cut from the tension side of the log.
Tip: When cutting firewood, make sure you know the
optimum length of the finished firewood ahead of time. Use
the guide bar as an approximate length gauge.
Pruning
Pruning is removing limbs from a standing tree, often for
purposes of maintaining a tree's health or aesthetics. Always
work with a firm footing. Never cut from a stepladder. De not
over reach. Do not cut above shoulder height.
1)
2)
3)
Begin pruning by making a reliefcut about 3 inches away from the
trunkofthe tree to adepth of about 1/3the diameter of the branch.
Complete the cut from above, just inside of the initial relief cut
Finish pruning by making a smooth even cut nearly flush to the
trunk. Itisrecommended toonly prunetreeswhiletheyaredormant
in the fall and winter to reduce the risk posed by diseaseor insects.
6 Check for parts online at www.getearthquakeocom or call 800-345-6007 M-F 8-5

Operator'sManual
CS4518 Chainsaws
ENGINE SAFETY PRECAUTIONS
Warning Carbon Monoxide Poisoning
Engines give off carbon monoxide, an odorless, colorless,
poisonousgas.Carbonmonoxidemaybepresentevenifyou do
notsmellorseeany engineexhaust.Breathingcarbonmonoxide
cancausenausea,fainting or death, inaddition to drowsiness,
dizziness and confusion, if you experience any of these
symptoms,seekfresh air and medicalattention immediately.
If your product comes with aseparate engine manual, be
sure to read and follow all safety and warning precautions
outlined there, in addition to any in this manual.
Preventing Carbon Monoxide Poisoning
Always start and run engine outdoors. Do not start or run
engine in an enclosed area, even if doors or windows are open.
Never try to ventilate engine exhaust indoors. Carbon
monoxide can reach dangerous levels very quickly.
Never run engine outdoors where exhaust fumes may be
pulled into a building.
Never run engine outdoors in a poorly ventilated area where
the exhaust fumes may be trapped and not easily taken
away. (Examples include: in a large hole or areas where hills
surround your working area.)
Never run engine in an enclosed or partially enclosed area.
(Examples include: buildings that are enclosed on one or
more sides, under tents, car ports or basements.)
Always run the engine with the exhaust and muffler pointed
in the direction away from the operator.
Never point the exhaust muffler towards anyone. People
should always be many feet away from the operation of the
engine and its attachments.
Do not change the engine governor settings or over-speed
the engine.
Gasoline Fires and Handling Fuel Safely
Use extra care in handling gasoline and other fuels. They are
flammable and vapors are explosive.
•When storing extra fuel be sure that it is in an appropriate
container and away from any fire hazards.
•Prevent fire and explosion caused by static electric discharge.
Use only nonmetal, portable fuel containers approved by the
Underwriter's Laboratory (U.L.) or the American Society for
Testing & Materials (ASTM).
•Always fill fuel tank outside in a well ventilated area. Never fill
your fuel tank with fuel indoors. (Examples include: basement,
garage, barn, shed, house, porch, etc.) Never fill tank near
appliances with pilot lights, heaters, or other ignition sources.
WARNING
ENGINES GIVE OFF CARBON MONOXIDE, AN ODOR=
LESS,COLORLESS,POISONOUS GAS, CARBON MeN =
OXIDE MAY BE PRESENTEVEN IF YOU DO NOT SMELL
OR SEE ANY ENGINE EXHAUST, BREATHING CAR=
BeN MONOXIDE CAN CAUSE NAUSEA, FAINTING OR
DEATH, IN ADDITION TO DROWSINESS, DIZZINESS
AND CONFUSION,
IF YOU EXPERIENCEANY OFTHESE SYMPTOMS, SEEK
FRESHAiR AND MEDICAL ATTENTION IMMEDIATELY,
CAUTION
HOT GASESARE A NORMAL BY=PRODUCTOFA FUNC=
TIONING CATALYTICCONVERTER. FOLLOW ALL SAFE=
TY iNSTRUCTiONS TO PREVENTBURNS AND FIRES.
DO NOT ALTER/MODIFY ENGINE:
NEVER ALTER OR MODIFY THE ENGINE FROM THE
FACTORY.SERIOUS INJURY OR DEATH MAY OCCUR IF
ENGINE IS MODIFIED ORALTERED.
WHEN WORKING ON OR REPLACING PARTSFOR THE
ENGINE OR PRODUCT, YOU MUST ALWAYS DISCON=
NECTSPARKPLUGWiRE FROMTHE SPARKPLUGAND
KEEPiT AWAY FROM THE SPARKPLUG.
•If the fuel has to be drained, this should be done outdoors.
The drained fuel should be stored in a container specifically
designed for fuel storage or it should be disposed of carefully.
•Never remove the fuel cap or add fuel with the engine
running. Stop engine and allow to cool before filling.
Do not smoke.o
o
o
Never drain fuel from engine in an enclosed area.
Always wipe up excess (spilled) fuel from engine before
starting. Clean up spilled fuel immediately. If fuel isspilled,
do not start the engine but move product and fuel container
from area. Clean up spilled fuel and allow to evaporate and
dry after wiping and before starting.
•Allow fuel fumes/vapors to escape from the area before
starting engine.
•Test the fuel cap for proper installation before starting and
using engine.
•Always run the engine with fuel cap properly installed on
the engine.
•Never smoke while refilling engine fuel tank.
•Do not store engine with fuel in fuel tank indoors. Fuel and
fuel vapors are highly explosive.
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Operator'sManual
CS4518 Chainsaws
•Never pour fuel from engine fuel tank.
•Never siphon fuel by mouth to drain fuel tank.
•Always have an adult fill the fuel tank and never allow
children to fill the engine.
•Never allowan adult or anyone under the influence ofdrugs
or alcohol to fill engine.
•When storing gasoline or equipment with fuel in the tank,
store away from furnaces, stoves, water heaters or other
appliances that have a pilot light or other ignition source
because they can ignite gasoline vapors.
BURNS AND FIRES
The muffler, muffler guard and other parts of the engine be-
come extremely hot during the operation of the engine. These
parts remain extremely hot after the engine has stopped.
Prevention of Burns and Fires
•Never remove the muffler guard from the engine.
Never touch the muffler guard because it is extremely hot
and will cause severe burns.
•Never touch parts of the engine that become hot after
operation.
•Always keep materials and debris away from muffler guard
and other hot parts of the engine to avoid fires.
•This engine is designed to operate using acatalytic converter
which contributes to the engine's compliance with the EPA.
CHILDREN AND BYSTANDERS
Tragic accidents can occur if the operator is not alert to the
presence of children and/or bystanders. Never assume that
others will remain where you last saw them.
o
o
o
o
Keep the area of operation clean of all persons, especially
small children and pets. Keep children under the watchful
care of a responsible adult.
Be alert and turn machine off if children enter the area.
Before and while moving backwards, look behind and down
for small children.
Never allow children to operate the machine.
Use extra care when approaching blind corners, shrubs, trees,
or other objects that may obscure vision.
SERVICE
• Always stop the engine whenever you leave the equipment,
before cleaning, repairing or inspecting the unit. Engine
should be turned off and cool, spark plug wire must be
removed from spark plug before any repairs or adjustments
are attempted. Never make adjustments or repairs with the
engine (motor) running. Disconnect the spark plug wire,
and keep the wire away from the plug to prevent accidental
starting. Remove the ignition key if equipped with an electric
start.
Always wear eye protection when you make adjustments or
repairs.
Keep all nuts and bolts tight and keep equipment in good
condition.
Never tamper with safety devices. Check their proper
operation regularly.
When servicing or repairing the machine, do not tip the
machine over or up unless specifically instructed to do so in
this manual. Service and repair procedures can be done with
the machine in an upright position. Some procedures will be
easier if the machine is lifted on a raised platform or working
surface.
To reduce fire hazard, keep machine free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage. Allow
machine to cool before storing.
Stop and inspect the equipment if you strike an object.
Repair, if necessary, before restarting.
Do not change the engine governor setting or over-speed
the engine.
•Clean and replace safety and instruction decals as necessary.
•To guard against engine over-heating, always have engine
debris filter mounted and clean.
•Inspect machine before storage.When not in use, disconnect
spark plug lead and store indoors in a dry place locked or
otherwise inaccessible to children.
•Use only original equipment parts from Earthquake,
including all nuts and bolts.
8 Check for parts online at www.getearthquake°¢om or call 800-345-6007 M-F 8-5

Operator'sManual
CS4518 Chainsaws
SAFETY DECALS
Although reading this manual and the safety instructions it contains will provide you with the necessary basic knowledge to operate
this equipment safely and effectively, we have placed several safety labels on the chainsaw to remind you of this important information
while you are operating the unit.
These important safety labels are illustrated below, and are shown here to help familiarize you with the location and content of
the safety messages you will see as you perform normal cutting operations. Review these labels now. If you have any questions
regarding their meaning or how to comply with these instructions, reread the complete safety instruction text on the preceding
pages, or contact your local dealer.
Should any of the safety labels become unreadable because of being worn, faded, or otherwise damaged during the use of your
chainsaw, use the part number information provided to order a replacement label from your local authorized dealer.
The safety labels are easily applied, and will act as aconstant visual reminder to you, and others who may use the equipment. Follow
the safety instructions necessary for safe, effective operation of your chainsaw.
(1) Read operator's instruction book before op-
erating this machine.
(2) You must wear appropriate ear, eye, and head
protection.
(3) Use two hands when operating the chainsaw.
(4) Warning! Danger of kickback.
STOP
I\l
PULL
(8) Indicates the engine operation ON/
OFF switch. Flipping the switch to the
"0" position immediately stops the en-
gine.
Location: Near the rear at the left side of the
rear handle.
(9) Indicates the choke knob location. Pull
out the choke knob and the choke
closes; push in the choke knob and the
choke opens.
Location: Near the rear at the right side of
the rear handle.
(S) Read, understand and follow all warnings.
(10) Indicates the oil pump adjustment loca-
tion. Turn the rod using ascrewdriver and
follow the arrow to the MAX position to
increase chain oil flow. Turning the rod to
the MIN position decreases chain oil flow.
Location: Bottom of the power unit.
For safe operation and maintenance, additional symbols are en-
graved on the machine.
6,1. (6) Indicates the port for refueling the gas/oil
mixture.
Location: Near the fuel cap.
©
(7) Indicates the port to refill the chain oil.
Location: Near the oil cap
(11) Indicates the directions that the chain
break is released (white arrow) and ac-
tivated (black arrow)
Location: Front of the chain cover.
(12) Indicates the direction of the saw chain
installation.
Location: Front of the chain cover.
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Operator'sManual
CS4518 Chainsaws
_CE MODEL SAFETYWARNINGSAND MARKINGS {FOR EUROPEAN MODELS)
The following markings and labels are applied to the product, in addition to those shown in the original instructions.
Decal Descriptions:
A:WARNING!
B:WARNING! Danger of kickback
C: Use two hands while operating chainsaw
D: Read operator instructions
E:Always wear protective head, eye, and ear gear
F: Always wear protective gloves when using product
G:Always wear protective foot gear when operating unit
Decal Description:
Pull recoil out slightly
before giving a full arm
pull.
LWA
Decal Description:
Guaranteed noise level
decal
NAMEPLATE DECALS
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Operator'sManual
CS4518 Chainsaws
SAFETY FEATURES
This saw is equipped with certain safety features and devices
to protect the user from harm in the event the saw reacts
unexpectedly to external forces:
1. Chain Brake:The saw isequipped with achain brake designed
to stop the chain instantaneously upon activation. The chain
brake can be activated in one of two ways:
The forward hand guard doubles as an activation lever for
the hand brake. It can be activated manually, or it may be
activated by the user's arm if a kickback occurs.
•The saw isalso equipped with an "Inertial Chain Break" The
same mechanism as above isactivated by the inertial force
created when a counterweight under the forward hand
guard accelerates toward the bar nose during a kickback.
•Proper cleaning and care of the chain brake system are
required to ensure reliable operation in the field. You should
also check your chain brake for proper operation regularly.
To check your chain brake:
Manually activate the chain brake by pushing the forward
hand guard toward the bar nose. There will be an audible
click when the chain brake engages. If there is no audible
click, the brake may already be engaged. Pull back on the
forward hand guard to deactivate the brake. An audible
click should be heard when the brake disengages. If there
is still no audible click, the brake is not functioning properly.
Remove the clutch cover, clean and reassemble, and re-test.
If no audible click is heard, contact customer service for
further assistance.
With the saw's engine shut off and the brake disengaged,
firmly grasp both handles and hold the saw over a log
or low stump. Swing the bar nose sharply down until it
makes contact. This should create enough inertial force
to automatically activate the chain brake. When the brake
engages, an audible click should be heard. If no audible click
is heard, the brake is not functioning properly. Remove the
clutch cover, clean and reassemble, and re-test. If no audible
click isheard, contact customer service for further assistance.
2.
3.
4.
Throttle Interlock: This saw is equipped with a throttle
interlock designed to prevent accidental engagement of
the throttle control. The throttle interlock is disengaged by
depressing the red tab on top of the rear handle. This isusually
accomplished when the user grasps the rear handle to operate
the saw.
Chain Catcher: Each saw is equipped with a chain catcher
beneath the clutch cover. If the chain is ever thrown from the
guide bar, or if the chain breaks, the chain catcher isdesigned
to capture the chain and prevent it from whipping back toward
the operator.
NOTE: inspect the chain catcher before each use. Replace if
missing or badly damaged.
Kickback Reduction Guide Bar and Saw Chain:This saw has
been equipped with a Double Guard ®91 guide bar and 91P
S-Series Low Kickback saw chain by Oregon ®.The features
of this bar and chain combination are design to reduce the
risk of kickback. To maintain adequate kickback prevention,
only use these components when replacing guide bar or saw
chain. (Refer to the Maintenance section of this manual for
full details.)
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Operator'sManual
CS4518 Chainsaws
FEATURES
1 2
1. Front hand guard and brake
2. Starter handle
3. Air filter cover
4. Choke knob
5. Throttle trigger lock-out
6. Rear handle
7. Throttle trigger
8. Engine switch
9. Fuel tank cap
10. Oil tank cap
11. Front handle
12. Saw chain
13. Guide bar
14. Primer Bulb
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Operator'sManual
CS4518 Chainsaws
SPECIFICATIONS
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Displacement 45.02cc
Fuel Mixture (Unleaded Gasoline, 50: two-cycle oil 1)
Fuel tank capacity 550 ml
Chain oil Bar chain oil for proper season
Oil tank capacity 260 ml
Carburetor Diaphragm type
Fuel consumption at maximum engine power 560 g/kw.h
Idling speed 3000 rpm max /rpm +/- 200
Maximum speed with cutting attachment 11,500 r/min +/- 500
Ignition system CDI with timing advance function
Spark Plug Champion L8RTF or equivalent
Oil feeding system Mechanical plunger pump with adjuster
Sprocket Teeth x Pitch 7T x .375"
Dimensions (L x W x H) 425 x 240 x 288 mm
16.75"x 9.S"x 9.35"
Dry weight (without guide bar and chain, 12.78 Ib
empty tanks
Guide BarType Sprocket Nose
Guide Bar Size 18"
Saw Chain Type Oregon ®91VG or 91P $62
Pitch 3/8" Low Profile
Gauge .050"
Specifications are subject to change without notice.
(SOUND AND VIBRATION LEVELS
Model 2006/42/EC Operator Ear
LpA(dBA)
CS38 100
CS41 100
CS45 102
2006/42/EC Sound Power Level 2006/42/EC Hand/Arm Vibration
LwA(dBA) Max m/s 2
110 10.5
110 10.5
110 12.5
Sound levels tested in accordance with ISO3744 & ISO 11201 - Grade 2 (Engineering) Method. Readings taken with engine at full throttle.
EAV = Exposure Action Value, ELV = Exposure Limit Value
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Operator'sManual
CS4518 Chainsaws
ASSEMBLY
The Earthquake ®chainsaw carton includes the following
Power Unit: Pre-assembled engine, handles, fuel tank,
oil tank, and chain brake handle.
Guide Bar: Oregon Double Guard 14"or 16", depending
on the saw model.
Saw Chain: Oregon 91P or 91VG $52 (14" models) or
Oregon $57 (16" models)
"Scwrench" Multi-tooh Combination plug/bar wrench
and screwdriver
Bar Scabbard: Plastic guard that fits over the guide bar
and saw chain.
ASSEMBLING YOUR CHAINSAW
1. Carefully remove all items from the packaging. Place the
power unit on a fiat, stable work surface with the muffler
facing to your right.
2. Pull back (toward the forward handle) on the brake lever to
ensure that the chain brake is disengaged.
3.
4.
5.
Using the "Scwrench" multi-tool, loosen and remove the bar
nuts securing the clutch cover to the power unit. Set the clutch
cover aside. Tip: If working in the field, place the bar nuts in
the clutch cover to keep from losing them in grass or foliage.
Remove and Discard the plastic shipping spacer from the bar
studs. The purpose of this spacer is to keep the clutch cover
in the correct position when the guide bar is not installed on
the power unit. SEE FIGURE 1.
Install the guide baron the bar studs, and slide the bar back
until it comes into contact with the drive sprocket.
6. Carefully remove the saw chain from its package. Stretch the
chain out into a long horizontal loop. The cutting teeth on
the top length of chain should face away from the power
unit. The cutting teeth on the bottom length of the chain
should face toward the power unit. Protective gloves should
be used when handling the chain.
7. Wrap the chain around the drive sprocket first, and lay the
drive links of the chain into the groove along the outer
perimeter of the guide bar. Lay the chain over the nose (tip)
of the guide bar.
8. Slide the bar forward until the bar mates with the tensioning
tab. Make sure that the drive links of the chain are seated
within the groove around the perimeter of the bar. Ifthe bar
will not slide forward far enough, use the screwdriver end of
the Scwrench to turn the tension screw counter-clockwise.
The tension screw is located on the front of the power unit,
next to the guide bar.
9. Replace the clutch cover over the bar, and turn the bar nuts
WARNING
FAILURE TO PROPERLYTENSION THE CHAIN COULD
RESULTIN DAMAGE TO THE UNIT OR SEVEREINJURY
OR DEATH, OVERTENSIONING COULD CAUSEDAMAGE
TO THE SAW'S POWER UNiT ORGUIDE BAR, LACKOF
TENSION COULD CAUSE THE CHAIN TO DISENGAGE
THE BAR COMPLETELY, ALLOWING IT TO WHIP BACK
WHERE IT COULD CONTACTTHE OPERATORCAUSING
SEVEREINJURY OR DEATH,
Figure 7
onto the bar studs. Only finger tighten the bar nuts at this step.
10. Locate the tension screw on the front of the power unit next
to the guide bar. Use the Scwrench to turn the tension screw
clockwise. This will take the slack out of the saw chain. When
properly tensioned, two conditions must be met:
•The chain should not hang or droop away from the guide
bar.
•You should be able to pull the chain slightly away from
the guide bar, but not so far as to be able to disengage the
drive links from the groove around the perimeter of the bar.
11. Pull up on the guide bar's nose and use the Scwrench to tighten
the bar nuts. Check that the chain spins freely around the bar
by hand. If there is resistance, the chain may be too tight.
12. Place the bar scabbard over the guide bar and saw chain. This
guard will help to protect the user from the sharp cutting
teeth as well as help keep the cutting teeth sharp when the
saw is not in use.
13.Check the tension of the saw chain frequently during use,
especially during the first two hours of use on a new chain.
Re-tension as needed.
14.Always release the tension in the chain after finishing work
and before the saw chain and guide bar cool completely. As
the saw chain heats up during operation, it will expand and
stretch, requiring re-tensioning on occasion. As the saw cools
down the saw chain will shrink, and if left tensioned, could
cause severe and permanent damage to the guide bar or the
power unit's drive components.
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Operator'sManual
CS4518 Chainsaws
OPERATION
FILLING FUEL TANK
1. Shut off engine and allow engine to completely cool before
refilling the fuel tank.
2. Move to a well-ventilated area,outdoors, away from flames
and sparks.
3. Clean debris from area around the fuel cap.
4. Loosen fuel cap slowly.
5. Carefully add fuel without spilling.
6. Do not fill gas tank completely full; allow space for fuel to
expand.
7. Immediately replace fuel cap and tighten. Wipe off spilled
fuel and allow to dry before starting engine.
The saw chain needs to stay lubricated during operation of
the unit. Aside from the fuel reservoir on the chainsaw, there
is also a bar and chain oil reservoir. Use only oil that has been
designed specifically for use with chainsaws. Bar and chain oil
has chemical properties which allow it to adhere to the saw
chain and provide better lubrication while the chain is in motion.
The saw isequipped with an adjustable automatic oiler. The
oiler and oil reservoir are designed such that a full tank of fuel
will run out before a full tank of oil. This ensures that the bar
and chain will receive a constant flow of oil during operation.
Always top offyour oil reservoir when re-fueling.
WARNING
CHAIN BRAKE WILL NOT PREVENT A KICKBACK. IN THE
EVENT OF A KICKBACK, THE CHAIN BRAKE ISDESIGNED
TO REDUCE THE RISK OF INJURY TO THE OPERATOR.
WARNING
DO NOT MODIFY OR ALTERTHE FUNCTIONALITY OF
THE THROTTLE INTERLOCK IN ANY WAY. DOING SO
WILL ALLOW ACCIDENTAL ENGAGEMENT OF THE
THROTTLE WHICH WILL RESULT AN UNEXPECTED
OPERATION OFTHE SAWCHAIN.
WARNING
CHAIN CATCHER IS INTENDED TO PREVENT INJURY
IN THE EVENT OFACHAIN MALFUNCTION. NEVER
OPERATE A SAW WITHOUT A CHAIN CATCHER,
REPLACEIF MISSING OR BADLY DAMAGED,
FILLING THE BAR AND CHAIN OIL RESERVOIR
1. While the engine is cool for re-fueling, clean debris from area
around the bar and chain oil cap.
2. Loosen oil cap slowly.
3. Carefully add bar and chain oil without spilling.
4. Do not fill oil reservoir completely full; allow space for oil to
expand.
5. Replace cap and tighten. Wipe offany spilled oil before starting
engine.
Note: Do not use waste or recycled oil Waste or recycled oil
could contain contaminants which will cause damage to the
oil pump.
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Operator'sManual
CS4518 Chainsaws
PRE-START INSPECTION
1. Check that all safety guards are in place and all nuts and bolts
are secure.
2. Inspect air cleaner for cleanliness.
3. Check the fuel supply. Fillthe fuel tank no closer than .S"from
top of tank to provide space for expansion.
4. Check the bar and chain oil level.
5. Be sure spark plug wire is attached and spark plug is
tightened securely.
6. Examine underneath and around engine for signs of oil or
fuel leaks.
7. Inspect fuel hoses for tightness and fuel seepage.
8. Look for signs of engine damage.
9. Remove excessive debris from muffler area and recoil starter.
START=UP
Before starting the engine, inspect the immediate area. Check
that there are no bystanders nearby. Make sure that you have a
firm and stable footing and remove tripping hazards. Clear all
objects that the saw chain could catch on and cause a pull-in,
push-back, or kickback reaction.
There are two safe and approved positions for cold-starting the
saw.
Starting on the ground:
1.Place saw on a fiat, stable patch of ground free of vegetation
and check that the saw chain is not in contact with the ground.
2. Place right foot on the base of the rear handle and firmly grip
the forward handle with left hand.
Starting in araised, standing position:
1.Place the rear handle between knees or thighs and firmly grip
the forward handle with left hand.
COLD ENGINE START:
1. Grip the rear handle with right hand, depressing the throttle
interlock with right palm, and pull the throttle control to
check for smooth operation and to reset the choke to the run
position.
2. Depress the primer (purge) bulb until it fills with fuel.
3. Pull the choke all the way out to the CHOKE position.
NOTE: This will close the choke and lock the throttle in the
starting position.
4. Put the power unit's ignition switch in the ON position.
NOTE: Signified by avertical line "1"
WARNING
DO NOT RUNA SAWTHAT IS NOT PROVIDING PROPER
OIL COVERAGEUNDER ANY CIRCUMSTANCES, DOING
SO WILL RESULT iN PERMANENT DAMAGE TO THE
GUIDE BARAND SAWCHAIN,
5. Grasp the starter handle firmly with right hand and slowly pull
until it provides resistance. Without letting the starter handle
retract, pull rope with a rapid full arm stroke. Let it return to
its original position very slowly until unit fires or runs. Repeat
this step ever time the starter rope is pulled.
NOTE: If engine fails to start after 5-6 pulis, push primer 1
time and pull starter rope again.
6. After engine starts running, place grasp rear handle with right
hand and remove right foot from the base of the rear handle.
7. Depress throttle interlock with right palm and pull throttle
control with right index finger.
NOTE: Thiswill automatically reset the choke to the RUN
position.
WARM ENGINESTART:
1. Pull choke all the way out to the CHOKEposition.
2. Continue with Step 4 of Cold engine starting
HOT ENGINE START:
1. Continue with Step 4 of Cold engine starting.
2. If engine does not fire, refer to Step 1of Warm engine starting.
STOPPING THE ENGINE:
1.
2.
3.
Let the saw idle for up to one minute to continue blowing air
through the engine to aid the cool-down process. Doing so
will help prolong the life of the saw.
NOTE: The engine is stiff running. Always maintain a firm,
controlling grip on the unit while the engine is running.
Put the unit's ignition switch in the OFFposition.
NOTE:Signified byan "0"
After the saw isoffand has cooled down, remove tension from
the chain.
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Operator'sManual
CS4518 Chainsaws
MAINTENANCE AND STORAGE
Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution. To help you
properly care for your engine, the following pages include simple maintenance procedures using basic hand tools. Other service
tasks that are more difficult, or require special tools, are best handled by professionals and are normally performed by a technician
or other qualified mechanic.
Maintenance, replacement or repair of the emissions control devices and systems may be performed by any non-road en-
gine repair establishment or individuals. However, items must be serviced by an authorized dealer to obtain "no charge"
emissions control service.
The maintenance schedule applies to normal operating conditions. If you operate your engine under unusual conditions (such as
sustained high-load or high-temperature operation) or use it in unusually wet or dusty conditions, consult your servicing dealer for
recommendations applicable to your individual needs and use.
Check Engine and Check Hardware X X
X
Air Filer
(See Air Filter Section)
Spark Plug
(Gap .025" or 0,0635mm)
See Spark Plug Section
Chain Tension
Chain
(See Chain Sharpening Section)
Guide Bar
(See Check Guide BarSection)
Check
Clean
Replace
Check/Adjust
X
X
X
Replace
Check/Adjust
Check/Sharpen
Clean
Replace
Check
Clean
Clean
Check/Clean
X
Oiler Port X
Drive Sprocket X X
(SeeDrive Sprocket Section)
X
X
X
X
X
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Operator'sManual
CS4518 Chainsaws
BAR AND CHAIN OiL
The saw is equipped with an adjustable chain oiler. The oil
pump, driven by the drive sprocket, will only pump oil when the
engine is running at high enough speeds to engage the clutch
and rotate the chain. Furthermore, the flow ofoil isadjustable to
accommodate variations in chain oil due to temperature.
To adjust the oil pump, insert a screwdriver in the small notch
beneath the clutch and drive sprocket. To increase the flow
of oil, turn the screwdriver counter-clockwise. To decrease
the flow of oil, turn the screwdriver clockwise. For optimum
performance, use a higher rate of flow with thicker oil or in
colder temperatures, and a lower rate of flow with thinner oil or
in warmer temperatures.
The guide bar and saw chain need to be well lubricated during
operation to prevent permanent damage from friction and heat.
Be sure to check the oil supply to the bar and chain before use.
1. After starting the engine, hold the saw up with the chain
suspended in front of or above a test surface.
2. Run the engine at about half throttle.
3. Oil should be flung off of the rotating chain onto the test
surface.
If the saw chain seems dry, but there is some oil present on the
bar or test surface, the oil pump may be set too low. Increase
the setting by turning the adjustment screw counter-clockwise.
If the saw chain and guide bar are dry and there is no oil on the
test surface, the oiler port and guide bar may need cleaning.
Remove the clutch cover, bar, and chain, and clean under the
clutch cover with a brush and clean the guide bar with a wire or
small screwdriver.
Reassemble and retest for oil presence. If no oil is present after
adjusting the oiler setting and cleaning the oiler port, the oil
pump may not be functioning. Discontinue use of the unit and
contact your local authorized service center or customer service
for assistance.
In compliance with EPA regulations, any adjustments to the
carburetor must be made by an authorized service center.
An authorized service center is capable of troubleshooting
carburetor problems, adjusting carburetors to perform correctly,
and adjusting carburetors to compensate for altitude.
IMPORTANT NOTE: Carburetor is set at factory. Further
adjustment must beperformed by an authorized service center.
Contact customer service for a list ofauthorized service centers.
ENGINE MAINTENANCE
COOLING FINS
Cooling fins, air inlets, and linkages must be free from any debris
before each use.
AIR FILTER
Never run engine without air cleaner properly installed. Added wear
and engine failure may occur if air cleaner is not installed on engine.
Service air cleaner every 3 months or after 20 hours of operation.
Clean filter daily in extremely dusty conditions.
Steps for Cleaning Air Filter
1.Remove the air cleaner cover by turning the thumb screw on top
of the power unit counter-clockwise and lifting the cover off.
2. To remove the filter, lift the filter element offof the threaded stud.
3. Larger surface dust and dirt particles can be removed from the filter
element bylightlytapping acomerofthe filter againsta hard surface.
4. To clean finer dust trapped in the mesh screens, split the filter
by inserting afiat screwdriver between the dogs on one corner
of the filter element and twisting.
5. Using an air compressor at a low pressure or a store-bought
compressed air duster, blowair through the mesh from the inside.
6. Pressthe two filter halves back together by squeezing around the
rim. Do not place pressure on the mesh or apuncture could occur.
7. Place the filter back over the threaded rod, making sure to seat
the filter on the O-ring on the carburetor.
8. Place the air cleaner cover back on the saw body and turn the
thumb screw clockwise until finger tight.
SPARK PLUG
Therecommended spark plug isaChampion L8RTFor equivalent.
Stepsfor Removing the Spark Plug
1.Remove the air cleaner cover by turning the thumb screw on top
of the power unit counter-clockwise and lifting the cover off.
2. Disconnect the spark plug cap and clean any debris from
around the spark plug area.
3. Remove spark plug using the"Scwrench"multi-tool. Replace if
any of the following occur; pitted electrodes, burned electrodes,
cracked porcelain, or deposits around the electrodes.
4. After analysis, seat spark plug and turn by hand until finger
tight.
Installing Spark Plug
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Operator'sManual
CS4518 Chainsaws
1. Reinstall original spark plug, tighten additional 1/2 turn.
2. Installing new spark plug, adjust spark plug gap to .025"
(0,635mm) and tighten additional 1/8 - 1/4 turn.
NOTE: Loose spark plug may overheat and damage engine.
Over tightened spark plug may damage threads in the
cyfinder head.
CARBURETOR
Never tamper with the factory setting of the carburetor.
SAW CHAIN TENSION MAINTENANCE
Keeping the saw chain at the proper tension is necessary for
safe operation and will help prolong the life of the saw chain
and the guide bar.
1. Shut the power unit offand allow the saw to cool.
2. The saw chain should not hang down from the bottom edge
of the guide bar.
3. Wearing protective gloves, hold the guide bar with one hand
and pinch the chain with the free hand.
4. Pull down on the chain. It should pull away from the bar, but
the drive links should not disengage the groove around the
perimeter of the guide bar.
5. Add or remove tension as needed.
6. Hold up on the guide bar nose and tighten the bar nuts with
the Scwrench.
Add tension at the beginning of every work session.
Check tension at every re-fueling.
Remove tension at the end of every work session.
SAW CHAIN MAINTENANCE
Keeping the saw chain sharp isa critical component to operating
a chainsaw. A dull saw chain will drastically reduce cutting
efficiency and can pose certain safety hazards.
•Avoid unintentionally striking foreign objects. This can cause
a kickback, but will also reduce the sharpness or permanently
damage the saw chain.
•Avoid cutting wood that hasbeen drug on the ground. Sand,
dirt, and mud stuck to the log will dull the sawchain.
•Avoid cutting wood that may contain metal such as nails,
staples, or wire.
•Avoid cutting all the way through when bucking a log. This
could allow the chain to come into contact with the soil below,
dulling the saw chain.
Sharpening Saw Chain Cutters (Teeth)
The saw chain included with this saw is a 91VG Chamfer Chisel TM or
91P Chamfer ChiselTMand requires a 5/32 inch round file (included
in the original packaging).
When to have your saw chain sharpened:
•Sawdust becomes powder-like
•You need to force the saw into the cut
•The saw tends to cut through at an angle instead of making a
straight cut
•Vibration increases
•Fuelconsumption increases
Always inspect your saw chain prior to sharpening. Check for
the following:
•Bent or burred drive links
•Broken cuttersor tie-straps
•Loose rivets or broken rivet heads
If broken components are found, discard the chain immediately.
To properly sharpen you saw chain:
1. Be sure to have the correct size file and file guide.
2. When hand filing it's important that 1/5, or 20 percent, of the
file's diameter is always held above the cutter's top plate.
3. Keep the correct top-plate filing angle line on your file guide
parallel with the chain.
4. Sharpen all cutters on one side of the chain first. Sharpen
by filing from the inside of each cutter to the outside. After
sharpening the first side, turn the saw around and repeat the
process for cutters on the other side of the chain.
5. If the chrome surface of the top or side plates is damaged, file
back until such damage is removed.
6. Keep all cutters at an equal length. Begin filing on the cutter
with the most damage, and file all subsequent cutters to the
same length.
7. DO NOTalterorfilethetopsof bumper tie strap links (between
each cutter) on the 91VG chain.
8. File ONLY on the "Push"stroke, do not pull the file against any
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Operator'sManual
CS4518 Chainsaws
metal object as this will damage the file.
It is also important to maintain the depth gauge setting
throughout the lifespan of the saw chain. 91VG and 91P chains
use a depth setting of.O2S't This setting should be checked and
corrected every third or fourth time the saw chain is sharpened.
1. Place the correct depth-gauge tool over the chain, with one
depth gauge protruding through the slot in the tool.
2. Ifthe depth gauge extends ahove the slot, use a fiat file to bring
the depth gauge flush with the top of the tool. Use only the
push stroke of the file. Pulling the file will damage the file.
3. Make sure to round over the leading edge of the depth
gauge to prevent kickbacks and tie strap breakage.
STORAGE
When storing the chainsaw for periods of three months or
longer:
1. Empty and clean the fuel tank in a well-ventilated area.
2. Dispose of fuel properly. Local regulations may apply. Contact
your local government or hazardous material service for
instructions.
3. Run the engine until the carburetor is dry. This will draw the
fuel out of the carburetor, preventing costly repairs to clean
gummed fuel from the fuel system.
4. Remove the sawchain and guide bar. Clean them thoroughly
and treat with a rust preventative before storing.
5. Thoroughly clean the chain saw. Remove sawdust and
excess bar and chain oil from the clutch cover and the area
surrounding the clutch. Pay close attention when cleaning
the cylinder cooling fins and the air filter.
6. Store the unit in a dry location, out of the reach of children
and other unauthorized users.
TROUBLESHOOTING & REPAIR
At Earthquake ®,we build quality and durability into the design
of our products; but no amount of careful design by us, and
careful maintenance by you, can guarantee a repair-free life for
your Earthquake ®chainsaw. Most repairs will be minor, and
easily fixed by following the suggestions in the troubleshooting
guide in this section.
The guide will help you pinpoint the causes of common problems
and identify remedies.
For more complicated repairs, you may want to rely on your
retailer, an authorized service center or Earthquake ®.A parts
breakdown is located toward the end of this manual.
We will always be glad to answer any questions you have, or help
you find suitable assistance.To order parts or inquire about war-
ranty, call or e-mail ususing the contact information found below.
ORDERING REPLACEMENT PARTS
Parts can be obtained from the store where the chainsaw was
purchased or direct from the factory. To order parts visit www.
getearthquake.com or call 1-800-345-6007.
For other general questions, you can e-mail us at info@getearth-
quake.com.
Include the following information with your order:
1) Part numbers
2) Part description
3) Quantity
4) Model numberand serial number
20 Check for parts online at www.getearthquake.¢om or call 800-345-6007 M-F 8-5