Chain Saw
Instruction Manual
MODEL : CS-450
warning
Users of this equipment risk injury to themselves and others if the unit is used improperly
and/or safety precautions are not followed. ECHO provides an operator’s manual and a
safety manual. Both must be read and understood for proper and safe operation. Failure to
do so could result in serious injury.
X750010904
01/12
X7503196704
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B. Other Safety Precautions
1.Do not operate a chain saw with one
12.Use extreme caution when cutting
small size brush and saplings because
slender material may catch the saw
chain and be whipped toward you or
pull you off balance.
hand! Serious injury to the operator,
helpers, or bystanders may result from
one-handed operation.
A chain saw is intended for two-handed
use.
13.When cutting a limb that is under
tension, be alert for spring-back so that
you will not be struck when the tension
in the wood fibers is released.
2.Do not operate a chain saw when you
are fatigued.
3.Use safety footwear, snug-fitting
clothing and protective gloves.
14.Keep the handles dry, clean, and free
of oil or fuel mixture.
Wear eye, hearing, and head
protection devices.
15.Operate the chain saw only in well
ventilated areas.
4.Use caution when handling fuel.
Move the chain saw at least 3 m
(10 feet) from the fueling point before
starting the engine.
16.Do not operate a chain saw in a tree
unless you have been specifically
trained to do so.
5.Do not allow other persons to be near
when operating the chain saw.
17.All chain saw service, other than
items listed in the Instruction manual
maintenance instructions, should
be performed by competent service
personnel.
6.Do not start cutting until you have a
clear work area, secure footing, and
a planned retreat path from the falling
tree.
(For example, if improper tools are
used to remove the flywheel or if
an improper tool is used to hold the
flywheel in order to remove the clutch,
structural damage to the flywheel could
occur and could subsequently cause
the flywheel to burst.)
7.Keep all parts of your body away from
the saw chain when the engine is
running.
8.Before you start the engine, make sure
that the saw chain is not contacting
anything.
18.When transporting your chain saw, use
9.Carry the chain saw with the engine
stopped, the guide bar and saw chain
to the rear, and the muffler away from
your body.
the appropriate guide bar scabbard.
19.Spark arrestor mufflers approved to
SAE Standard J335 are standard
on ECHO chain saws to reduce the
possibility of forest fires.
10.Do not operate a chain saw that is
damaged, improperly adjusted, or not
completely and securely assembled.
Be sure that the saw chain stops
moving when the throttle control trigger
is released.
Do not operate the chain saw with a
loose or defective muffler.
Do not remove the spark arrestor
screen.
11.Shut off the engine before setting the
chain saw down.
CS-450
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CONTENTS
RULES FOR SAFE OPERATION .......................................................................................................
SYMBOLS AND SIGNS ......................................................................................................................
EMISSION DATA ................................................................................................................................
PACKING LIST....................................................................................................................................
NOMENCLATURE OF PARTS ...........................................................................................................
OPERATOR SAFETY .........................................................................................................................
2
4
6
6
7
8
CORRECT USE OF CHAIN BRAKE................................................................................................... 10
PREPARATION FOR USE.................................................................................................................. 11
FUEL AND LUBRICANT ..................................................................................................................... 13
OPERATION ....................................................................................................................................... 15
CUTTING INSTRUCTION................................................................................................................... 18
CHAIN AND GUIDE BAR COMBINATION.......................................................................................... 23
MAINTENANCE AND CARE............................................................................................................... 24
Carburetor Adjustment........................................................................................................................ 25
- High Altitude Operation ................................................................................................................... 25
SETTING THE SAW CHAIN ............................................................................................................... 29
TROUBLESHOOTING ........................................................................................................................ 31
STORAGE AFTER USE...................................................................................................................... 32
TECHNICAL DATA.............................................................................................................................. 32
WARRANTY STATEMENTS............................................................................................................... 33
SERVICING INFORMATION............................................................................................................... 36
This chain saw is designed for cutting wood or wood products. Do not cut solid metal, sheet metal, plastic
or any non-wood materials.
Specifications, descriptions and illustrative material in this literature are as accurate as known at the time
of publication, but are subject to change without notice. Illustrations may include optional equipment and
accessories, and may not include all standard equipment.
SYMBOLS AND SIGNS
CIRCLE AND SLASH SYMBOL
This symbol means the specific action
shown is prohibited. Ignoring these
prohibitions can result in serious or
fatal injury.
DANGER
The safety alert symbol accompanied by
the word “DANGER” calls attention to an
act or condition which WILL lead to serious
personal injury or death if not avoided.
NOTE
WARNING
This enclosed message provides tips for use,
care and maintenance of the unit.
The safety alert symbol accompanied by
the word “WARNING” calls attention to an
act or condition which CAN lead to serious
personal injury or death if not avoided.
IMPORTANT
The enclosed message provides information
necessary for the protection of the unit.
CAUTION
The safety alert symbol accompanied by
the word “CAUTION” calls attention to an
act or condition which may lead to minor or
moderate personal injury if not avoided.
CS-450
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SYMBOL FORM
Symbol form/shape Symbol description/application Symbol form/shape Symbol description/application
Carefully read the Instruction
manual
Chain oil fill
Wear eyes, ears and head
protection
Chain oil pump
Chain oiler adjustment
Chain brake operation
Emergency stop
Carburetor adjustment
STOP
- Low speed mixture
Choke control “Cold Start”
position (choke closed)
Carburetor adjustment
- High speed mixture
Oil and gasoline mixture
Carburetor adjustment
- Idle speed
DECALS
CS-450
WARNING!! Read and follow all
safety precaution in the instruction
manual. Failure to follow
instructions could result in serious
personal injury.
TO AVOID KICKBACK
1. Hold the chain saw firmly with both
hands.
2. Don’t let the nose of the guide bar
contact any obstruction.
3. Tip contact may suddenly move the
guide bar upward and backward,
which may cause serious injury.
Locate these safety decals on your unit. Make sure
the decals are legible and that you understand and
follow the instructions on them. If a decal can-
not be read, a new one can be ordered from your
ECHO dealer.
CS-450
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Emission Data
Emission control (Exhaust & EvaporativE)
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM (en-
gine modification) and, if the second to last character
of the Engine Family on the Emission Control Informa-
tion label (sample below) is “C”, “K”, or “T”, the emis-
sion control system is EM and TWC (3-way catalyst).
The fuel tank/fuel line emission control system is EVAP
(evaporative emissions). Evaporative emissions for
California models may only be applicable to fuel tanks.
an Emission Control Label is located on the engine.
(This is an EXAMPLE ONLY, information on label varies
by engine FAMILY).
PrODUCT EMiSSiOn DUraBiLiTY (EMiSSiOn COMPLianCE PEriOD)
The 300 hour emission compliance period is the time span selected by the manufacturer certifying the
engine emissions output meets applicable emissions regulations, provided that approved maintenance
procedures are followed as listed in the Maintenance Section of this manual.
PACKING LIST
The ECHO product you purchased has been fac-
tory pre-assembled for your convenience. Due to
packaging restrictions, guide bar and saw chain
installation and other assembly may be necessary.
After opening the carton, check for damage. Im-
mediately notify your retailer or ECHO dealer of
damaged or missing parts. Use the packing list to
check for missing parts.
ECHO Chain Saw
Assembly Tool (s)
Spiked Bumper
5x12 mm Bolts
Instruction manual
Safety manual
ECHO Power Blend X™
2-stroke oil sample
CS-450
Guide bar
Warranty registration
card
Kick Guard®
Saw chain
CS-450
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NOMENCLATURE OF PARTS
4
3
CS-450
5
1
6
7
25
8
9
15
10
2
11
12
13
14
4
24
23
22
16
17
18
19
20
21
CS-450
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NOMENCLATURE OF PARTS
12. Spiked bumper - Device, fitted in front of the
1.
Instruction manual - Included with unit. Read
before operation and keep for future reference to
learn proper, safe operating techniques.
guide bar mounting point, acting as a pivot when
in contact with a tree or log.
2.
3.
Safety manual - Describe operating and safety
instructions for this chain saw.
13. Guide bar - The part that supports and guides
the saw chain.
Front hand guard - Guard between the front
handle and the saw chain for protecting the hand
from injuries and aiding in control of the chain saw
if the hand slips off the handle.
14. Saw chain - Chain, serving as a cutting tool.
15. Bar tip guard - Anti-kickback device attached
on the bar nose.
This guard is used to lock the chain brake which is
to stop the saw chain rotation.
16. Cylinder cover - The cooling airflow grill. It cov-
ers the cylinder, spark plug and silencer.
4.
Cleaner cover knob - Device for installing the air
17. Front handle (for the left hand) - Support han-
cleaner cover.
dle located at the front of the engine housing.
5.
6.
Air cleaner cover - Covers air filter.
18. Oil tank cap - For sealing the oil tank.
Purge pump - When starting engine, push purge
pump 3 or 4 times.
19. Starter handle - Pull handle slowly until starter
engages then quickly and firmly. When engine
starts, return handle slowly.
7.
8.
9.
Choke control knob - Device for enriching the
fuel/air mixture in the carburetor to aid cold start-
ing.
DO NOT let handle snap back or damage to unit
will occur.
20. Fuel tank cap - For sealing the fuel tank.
Rear hand guard - Extension on the lower part of
the rear handle for protecting the hand from the
chain if it breaks or degrooves.
21. Throttle trigger - Device activated by the op-
erator’s finger, for controlling the engine speed.
Clutch cover - Protective cover to the guide bar,
saw chain, clutch and sprocket when the chain
saw is in use.
22. Rear handle (for the right hand) - Support
handle located towards the rear of the engine
housing.
23. Throttle trigger lockout - A safety lever which
must be depressed before the throttle trigger
can be activated in order to prevent the acciden-
tal operation of the throttle trigger.
10. Chain tension adjuster - Device to adjust chain
tension.
11. Chain catcher - A projection designed to reduce
the risk of the operator’s right hand from being hit
by a chain which has broken or derailed from the
guide bar during cutting.
24. Ignition switch - Device for connecting and dis-
connecting the ignition system and thus allowing
the engine to be started or stopped.
25. Spark arrestor muffler or spark arrestor
muffler with catalyst -The muffler or catalytic
muffler controls exhaust noise and emission.
The spark arrestor screen prevents hot, glow-
ing particles of carbon from leaving the muffler.
Keep exhaust area clear of flammable debris.
OPERATOR SAFETY
warning
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from
all openings.
• aLwaYS stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit.
• DO nOT start or operate unit unless all guards and protective covers are properly assembled to unit.
• nEVEr reach into any opening while the engine is running. Moving parts may not be visible through openings.
CS-450
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warning
The ignition components of this machine generate an electromagnetic field during operation which may in-
terfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with pacemakers should
consult with their physician and the pacemaker manufacturer before operating this machine. In the absence
of such information, ECHO does not recommend the use of ECHO products by anyone who has a pacemaker.
• See a doctor if you feel tingling, numbness or pain in
VIBRATION AND COLD
your fingers, hands, wrists or arms. The sooner RSI/
CTS is diagnosed, the more likely permanent nerve
and muscle damage can be prevented.
• It is believed that a condition called Raynaud’s
Phenomenon, which affects the fingers of certain
individuals, may be brought about by exposure to
vibration and cold.
Exposure to vibration and cold may cause tingling
and burning followed by loss of color and numbness
in the fingers. The following precautions are strongly
recommended because the minimum exposure
which might trigger the ailment is unknown.
EYE AND HEARING PROTECTION
• Wear eye protection goggles that meet ANSI
Z 87.1 requirements.
Goggles meeting the requirements have the mark “Z
87” stamped on them.
• Wear hearing protection.
• Keep your body warm, especially the head and
If this guideline is not followed, hearing loss can oc-
cur.
neck, feet and ankles and hands and wrists.
• Maintain good blood circulation by performing vigor-
ECHO recommends wearing hearing protection at all
ous arm exercises during frequent work breaks and
times.
also by not smoking.
• Limit the number of hours of operation. Try to fill
WEAR PROPER CLOTHING
each day with jobs where operating the chain saw,
• Snug fitting durable clothing should be worn. Pants
or other hand-held power equipment is not required.
should have long legs, DO NOT WEAR SHORTS.
• If you experience discomfort redness and swelling
Do not wear loose fitting clothing, scarves, neckties,
of the fingers, followed by whitening and loss of
jewelry or any item that may become tangled in sur-
feeling, consult your physician before further expos-
rounding growth or moving parts.
ing yourself to cold and vibration.
• Wear shoes with non-skid soles. DO NOT wear open
toed shoes or operate unit barefooted.
• Wear no-slip, heavy duty work gloves to improve your
REPETITIVE STRESS INJURY
• It is believed that over-using the muscles and ten-
grip on the chain saw handles. The gloves also help
reduce the transmission of machine vibration to your
hands.
dons of the finger, hands, arms and shoulders may
cause soreness, swelling, numbness, weakness
and extreme pain to the areas just mentioned.
Certain repetitive hand activities may put you at a
HOT HUMID WEATHER
high risk for developing a repetitive stress injury
• Heavy protective clothing can increase operator
(RSI).
fatigue which may lead to heat stroke.
• An extreme RSI condition is Carpal Tunnel Syn-
Schedule heavy work for early morning, or late
drome (CTS) which could occur when your wrist
afternoon hours when temperatures are cooler.
swells and squeezes a vital nerve that runs through
the area. Some believe that prolonged exposure to
vibration may contribute to CTS. CTS can cause
severe pain for months or even years.
To reduce the risk of RSI/CTS, do the following:
AVOID HOT SURFACES
• During operation, the muffler or catalytic muffler and
surrounding cover become hot.
• Never suspend the saw on a lanyard with the engine
• Avoid using your wrist in a bent, extended or twisted
running.
position.
• Always use the saw from the right-hand side of your
body - NEVER from the left side.
• Always wear proper safety clothing to protect your
lower body from sharp saw chain and hot muffler.
• Always keep exhaust area clear of flammable debris
• Take periodic breaks to minimize repetition and rest
your hands.
• Reduce the speed and force in which you do the
repetitive movement.
• Do exercises to strengthen hand and arm muscles.
during transportation or when storing, otherwise seri-
ous property damage or personal injury may result.
CS-450
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SPARK ARRESTOR MUFFLER
• The spark arrestor muffler controls the exhaust
noise and prevents hot, glowing particles of
carbon from leaving the muffler.
Make sure the spark arrestor screen is in good
repair and properly seated in the muffler.
• Certain internal combustion engines operated on
forest, brush, and/or grass-covered areas in the
states of Washington, Oregon, Idaho, California,
Minnesota, New Jersey and Maine, are required
to be equipped with a spark arrestor.
This requirement also applies to all U.S. Forest
Service lands.
In some of these areas, the spark arrestor system
must be certified per USDA Forest Service Regula-
tion SAE J335.
Check with your local or state authorities for spe-
cific regulations in your area.
Failure to follow these requirements is a violation
of the law.
CORRECT USE OF CHAIN BRAKE
Rotational kickback
DANGER
Kickback safety precaution for chain saw
users: Kickback may occur when the nose
or tip of the guide bar touches an object or
when the wood closes in and pinches the
saw chain in the cut.
The installation of a chain brake may be mandatory
by law or as stipulated by insurance regulations in
your area of operation.
You should inquire through local government of-
fices, your employer or your local dealer to ensure
that your chain saw conforms to the required safety
standard.
ECHO chain brakes have been designed and
tested to comply with international safety standards
as follows.
Rotational kickback
USA
: ANSI Standard B175.1 - 2000
Safety Requirement for chain saws
Canada : CSA Standard Z 62.1 CHAIN SAWS
WARNING
ANSI Standard B175. 1 - 2000 stipulates that
the brake shall stop the chain 0.12 seconds
at an engine speed of 13500 r/min.
It is the responsibility of the owner/operator
to ensure that the brake is serviced, adjusted
and tested strictly in accordance with the
instructions as detailed herein in order
to ensure that the brake performance is
maintaind in compliance with the Standard
B175. 1 - 2000.
Chain moving downward at impact
Linear kickback
Pinch
CS-450
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PREPARATION FOR USE
WARNING
Saw chain is sharp! Always wear gloves
when handling assembly, otherwise serious
personal injury may result.
warning
Using improper replacement components or remov-
ing safety devices may result in serious or fatal
injury.
nOTE
The machine may be delivered with guide bar,
tip guard, and saw chain separated. Install
guide bar, tip guard, and saw chain as follows.
KICK GUARD® TO BAR INSTRUC-
TIONS
Bolt (A)
Dimple (D)
Tools Needed: Two 11 mm (7/16 in.) Wrenches.
For saws with Kick Guard® P/N 2893201 and
Symmetrical Low-Kick type (Double Guard)
guide bars.
Kick Guard®
Rear hole (B)
1. Install bolt (A) in rear hole (B) of Kick Guard®
and through front hole (C) in guide bar.
Recess (E)
Front hole (C)
2. IMPORTANT: Dimple (D) in Kick Guard® must
engage recess (E) in guide bar.
3. Tighten nut (F) and bolt (A) using 11 mm (7/16
in.) wrenches until snug. Make certain Kick
Guard® is flush against guide bar.
Nut (F)
Guide bar
4. Tighten nut (F) 1/8 additional turn.
5. Check to make certain Kick Guard® is tight on
guide bar.
GUIDE BAR AND SAW CHAIN IN-
STALLATION/REMOVAL
NOTE
Brake lever
• Move the chain brake lever (Front hand guard)
fully rearward to remove or install the clutch
cover to chain saw.
(Front hand guard)
Brake connector
• Align the brake connector of the clutch cover to
the groove on the side of the brake lever (Front
hand guard).
Clutch cover
Two nuts
1. Loosen air cleaner cover knob and remove air
cleaner cover.
2. Remove spark plug lead.
3. Remove two clutch cover nuts and remove
clutch cover.
4. Remove bar and saw chain if necessary. See
“Maintenance and Care” section for guide bar/
saw chain maintenance procedures.
Two bolts 5 × 12 mm
5. For initial setup, install the spiked bumper on the
Spiked bumper
front of machine with two 5 × 12 mm bolts.
CS-450
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Guide bar studs
6. Mount guide bar on studs and slide toward
clutch to make saw chain installation easier. In-
stall chain with cutters on top of guide bar facing
forward.
Clutch
Guide bar
adjuster
hole
7. Unlock the chain brake, and install the clutch
cover over the guide bar studs. Ensure chain
tension adjuster pin fits into the guide bar
adjuster hole, brake band is positioned around
clutch drum, and pin at rear of clutch cover fits
hole on engine cover. Tighten clutch cover nuts
finger tight.
Hole
Nuts
Pin
Adjuster pin
Clutch cover
Brake band
Brake connector
8. Turn saw over, and check brake band for correct
position on clutch drum. If brake band is not in
place around drum, remove cover, make sure
brake is unlocked, and reinstall. Tighten clutch
cover nuts finger tight.
WARNING
Improper clutch cover assembly can result
in serious injury, and will cause severe
saw damage if unit is started. Never start
or operate saw if brake band is not in place
on clutch drum. Always check chain brake
operation after replacing cover. Do not
use saw if chain brake does not function
properly.
Unlock chain brake
ADJUSTING CHAIN TENSION
Direction to
tension the
chain
IMPORTANT
Always loosen clutch cover nuts before turning
the chain tension adjuster, otherwise the clutch
cover and tensioner will be damaged.
1. Loosen air cleaner cover knob and remove air
cleaner cover.
Adjusting screw
2. Remove spark plug lead.
3. Loosen two clutch cover nuts, if necessary.
4. Hold the bar nose up, and turn the adjuster
screw clockwise until chain contacts underside
of the bar.
5. Tighten both nuts with the bar nose held up.
Proper tension Improper tension
6. Pull the chain around the bar by hand. Loosen
the adjustment if you feel tight spots.
7. When chain is properly tensioned, tighten clutch
cover nuts securely - 20 to 23 N·m (175 to 200
in. lb.).
8. Keep chain properly tensioned at all times.
nOTE
All chains require frequent adjustments.
CS-450
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FuEl anD lubricant
warning
Check fuel system for leaks due to fuel tank damage, especially if the unit is dropped. If damage or leaks are
found, do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an
authorized servicing dealer before using.
NOTICE: Use of unmixed, improperly mixed, or fuel older than 90 days, (stale fuel), may cause hard starting, poor perfor-
mance, or severe engine damage and void the product warranty. Read and follow instructions in the Storage section of this
manual.
FuEl statEmEnt
warning
Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO requirements are NOT
approved for use in ECHO 2-stroke gasoline engines. Use of alternative fuels may cause performance problems, loss of
power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited to, improper clutch
engagement. Alternative fuels may also cause premature deterioration of fuel lines, gaskets, carburetors and other engine
components.
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to 10%
Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is NOT ap-
proved.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards must be used. Echo
brand premium Power Blend XTM Universal 2-Stroke Oil meets these standards. Engine problems due to inadequate lubrication
caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD certified oil, such as Echo premium Power Blend XTM,
will void the two-stroke engine warranty.
IMPORTANT
Echo premium Power Blend XTM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo engines sold
in the past regardless of ratio specified in those manuals.
Handling Fuel
warning
Fuel is VERY flammable. Use extreme care when mixing, storing or handling or serious personal injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow flames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
• DO NOT overfill fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.
• Move at least 3m (10 ft.) from refueling location before starting the engine.
CS-450
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Mixing Instructions
Fuel Mix Chart 50:1
1. Fill an approved fuel container with half of the required
amount of gasoline.
2. Add the proper amount of 2-stroke oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Add remaining gasoline, close fuel container, and remix.
IMPORTANT
Spilled fuel is a leading cause of hydrocarbon emissions.
Some states may require the use of automatic fuel shut-off
containers to reduce fuel spillage.
after use
IMPORTANT
• DO NOT store a unit with fuel in its tank. Leaks can occur.
Return unused fuel to an approved fuel storage container.
Stored fuel ages. Do not mix more fuel than you
expect to use in thirty (30) days, ninety (90) days
when a fuel stabilizer is added.
Storage - Fuel storage laws vary by locality. Contact your local
government for the laws affecting your area. As a precaution, store
fuel in an approved, airtight container. Store in a well-ventilated,
unoccupied building, away from sparks and flames.
IMPORTANT
Stored two-stroke fuel may separate. ALWAYS
shake fuel container thoroughly before each use.
CHAIN LUBRICANT
Cap indication
Fuel/oil tanks are indicated by the following
illustrations.
Proper lubrication of the chain while in operation reduces
friction between the chain and the guide bar to a mini-
mum and assures a longer service life.
• Use bar and chain oil of high quality for this purpose.
• Do not use used or reclaimed oil to avoid various oiler
problems.
• Use ECHO bar and chain oil.
• When ECHO bar and chain oil is not available:
Use motor oil, etc.
• Use bar and chain oil of the following grades:
SAE No. 30....... in summer
SAE No. 10....... in winter or when cutting resinous
trees.
• When refueling, also refill chain oil.
CS-450
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OPERATION
warning
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from
all openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a com-
plete stop before removing obstructions, clearing debris, or servicing unit.
warning
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause uncon-
sciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is
directed away from your face and body.
warning
Operation of this equipment may create sparks that can start fires. This unit is equipped with a spark arrestor to
prevent discharge of hot particles from the engine. Metal blade use also can create sparks if the blade strikes
rocks, metal, or other hard objects. Contact local fire authorities for laws or regulations regarding fire prevention
requirements.
warning
The ignition components of this machine generate an electromagnetic field during operation which may interfere
with some pacemakers. To reduce the risk of serious or fatal injury, persons with pacemakers should consult
with their physician and the pacemaker manufacturer before operating this machine. In the absence of such
information, ECHO does not recommend the use of ECHO products by anyone who has a pacemaker.
Throttle trigger lockout
Purge pump
WARNING
• After choke control knob is pulled and then knob
is returned to original position, throttle remains
slightly open (latch condition).
Throttle trigger
Choke control knob
Choke
•The chain will attempt to rotate when
engine is started with throttle latch engaged.
•Do not start engine before chain brake is
activated.
CAUTION
Chain brake
• After starting the engine, squeeze throttle trigger
slightly to release throttle latch, otherwise brake
damage may occur.
• Never use throttle latch for cutting.
• Use the throttle latch only in starting.
CS-450
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WHEN THE ENGINE IS COLD
CAUTION
Make sure the bar and chain are free from any
obstruction when starting the chain saw.
Chain brake
• Move chain brake lever fully forward to lock chain
brake before starting.
• Fill the fuel tank with fuel mixture. Do not over fill.
• Fill the chain oil tank with lubricant.
Do not over fill.
• Move ignition switch to “RUN” position.
• Push purge pump 3 to 4 times or until fuel is visible in
purge pump.
Ignition switch
• Pull choke control knob all the way out. (Choke posi-
tion)
Start / Run
nOTE
Do not pull starter rope out to the maximum pos-
sible position.
Do not allow recoil handle to snap back against the
casing.
• Securely hold the chain saw as shown and pull starter
handle several times until first firing sound.
Throttle trigger lockout Purge pump
• Push choke control knob all the way in.
• Pull starter handle to start the engine.
• When engine starts, immediately squeeze throttle trig-
ger, to release throttle latch.
Throttle trigger
Choke control knob
Choke
CAUTION
Do not increase engine speed while chain brake is
locked.
nOTE
If engine does not start after 5 pulls, repeat instruc-
tions.
Starter handle
WHEN THE ENGINE IS WARM
CAUTION
Make sure the bar and chain are free from any
obstruction when starting the chain saw.
Choke control knob
• Move chain brake lever fully forward to lock chain
brake before starting.
• Confirm there is fuel and chain oil in the tanks.
• Move ignition switch to “RUN” position.
Open choke
• Securely hold the chain saw as shown and pull
starter handle.
nOTE
If engine does not start after 5 pulls, use cold start
procedure.
CS-450
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RUNNING
Unlock chain brake
warning
The saw chain should not move at idle, otherwise
serious personal injury may result.
nOTE
If saw chain moves adjust carburetor according to
“Carburetor Adjustment” instructions in this manual,
or see your dealer.
• When engine starts, keep idling for a few minutes.
• Set the brake lever in the unlocked position before
starting to cut.
• Pull throttle trigger gradually and increase revolution
of the engine.
• The chain starts running when the engine reaches
4000 r/min approximately.
• Confirm proper acceleration and lubrication of chain
and bar.
• Do not run the engine at high speed unnecessarily.
• Be sure that saw chain stops moving when throttle
trigger is released.
Ignition switch
STOPPING
STOP
• Release throttle trigger and move ignition switch
down to “STOP” position.
NOTE
If engine does not stop, pull choke control knob
out fully to stop engine.
Throttle trigger
Return the unit to your authorized ECHO dealer
to check and repair stop switch before starting
the engine again.
CHECKING CHAIN TENSION
• Chain tension should be checked frequently
during work and corrected as necessary. See
"Adjusting Chain Tension."
CAUTION
Do not operate with a loose chain.
CHAIN LUBRICATION TEST
Hold the chain just above a dry surface and open
the throttle to half speed for 30 seconds.
A thin line of “thrown” oil should be seen on the
dry surface.
CS-450
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CUTTING INSTRUCTION
GENERAL
CAUTION
• Read the ECHO “CHAIN SAW SAFETY MANUAL”
included with your chain saw for additional
cutting and safety instructions.
• Wear suitable hearing protection such as
earmuffs or earplugs to protect against
objectionable or uncomfortable loud noises.
• Do not let the tip of the bar touch anything while
the engine is running.
At cutting speed the chain is moving at a high
rate of speed.
Should the tip contact a limb or log while the
chain is moving, the tip will be pushed upward
with considerable force.
This is known as kickback. Avoid it!
In all circumstances the operation of the chain saw is a
one-man job.
It is difficult at times to take care for your own safety, so
don’t assume the responsibility for a helper as well.
After you have learned the basic techniques of using the
saw, your best aid will be your own good common sense.
The accepted way to hold the saw is to stand to the left
of the saw with your left hand on the front handlebar and
your right hand on the rear handle so you can operate
the throttle trigger with your right index finger.
Before attempting to fell a tree, cut some small logs or
limbs.
Become thoroughly familiar with the controls and the
responses of the saw.
Start the engine, see that it is running properly.
Squeeze the trigger to open the throttle wide open and
start the cut. If the chain is properly sharpened, the cut-
ting should be relatively effortless.
It is not necessary to press down hard to make the saw
cut.
Pushing the saw too hard will slow the engine and cut-
ting will actually be more difficult.
nOTE
Some material may adversely affect the housings of
your ECHO chain saw.
(Example: Palm Tree Acid, fertilizer, etc.) To avoid
housing deterioration, carefully remove all packed
saw dust around clutch and guide bar area and
wash with water. Coat metal parts with light oil.
Kickback
CS-450
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FELLING THE TREE
3 m (10 feet)
Retreat
warning
Direction of fall
A falling tree can seriously damage anything it may
hit - a car, a house, a fence, a power line, or another
tree. There are ways to make a tree fall where you
want it, so first decide where that is!
45°
45°
Not this way
Retreat
Before cutting, clear the area around the tree. You will
need good footing while working and you should be able
to work the saw without hitting any obstacles.
Next, select a path of retreat.
When the tree begins to fall you should retreat away from
the direction of fall at a 45-degree angle and at least 3
m (10 feet) from the trunk to avoid the trunk kicking back
over the stump.
Direction of fall
Hinge
5 cm (2 in.)
Begin the cut on the side to which the tree is to fall. Cut a
notch about 1/3 of the way into the tree. The position of
this notch is important since the tree will try to fall “into”
the notch.
First cut
Felling cut
Notch
The felling cut is made on the side opposite the notch
and at a level about 5 cm (2 in.) above the bottom of the
notch.
5 cm (2 in.)
Second cut
Do not try to cut through to the notch with the felling cut.
The remaining wood between the notch cut and felling
cut about 5 cm (2 in.) will act as a hinge when the tree
falls, guiding it in the desired direction.
One-third tree diameter
When the tree starts to fall, kill the engine, place the saw
on the ground and make your retreat quickly.
To fell big trees with a diameter exceeding twice the bar
length, start the notching cuts from one side and draw
the saw through to the other side of the notch.
Start the back cut on one side of the tree, pivoting the
saw through to form the desired hinge on that side.
Then remove the saw for the second cut. Insert the saw
in the first cut, very carefully so as not to cause kickback.
The final cut is made by drawing the saw forward in the
cut to reach the hinge.
3
2
1
CS-450
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LIMBING
Limbing a fallen tree is much the same as bucking.
Never stand on the tree that you are limbing.
When limbing, caution is the word.
Be careful of the tip touching other limbs.
Always use both hands.
Don’t cut with the saw overhead or aligned vertically
with your body. If the saw should kickback, you may not
have enough control to prevent possible injury.
BUCKING
Bucking is the sawing of a log or fallen tree into smaller
pieces.
There are a few basic rules which apply to all bucking
operations.
Keep both hands on the handles at all times. Support
logs if possible.
When cutting on a slope or hillside, always stand uphill.
Keep in mind that the wood is heavy and that it will bend
and pinch the saw if improperly supported. The trunk
will weaken at the point where you make the cut unless
the tree is lying on perfectly flat ground or supported as
shown.
If you make the cut with the tree on the ground, don’t
let the saw’s chain dig into the earth; it is harmful for the
saw, and you stand a good chance of being struck by
flying debris.
Uphill position
To cut the trunk, use the bucking and two-cut sequence
shown.
The first cut should be no deeper than one-third the
trunk diameter.
Finish cut
First cut
warning
KiCKBaCK iS DangErOUS
Kickback is generated when the rotation of the chain is
arrested for some reason. The most dangerous effect
of this action occurs when the nose of the bar contacts
another object, the chain is momentarily stopped and
all the energy of the engine throws the bar upwards and
backwards towards the operator.
Board or flat stones
The chain saw industry and government agencies have
attempted to prescribe various safety devices, but the
best protection is to avoid kickback.
Comply with the Safety Precautions as listed in this
manual and Safety manual.
CS-450
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CHAIN BRAKE OPERATION
• Set the lever in the unlocked position before
starting to cut.
Kickback motion
• If the brake is tripped by kickback reaction, the
chain will stop immediately. Release the throt-
tle to avoid possible damage to the engine or
clutch.
• Do not attempt to operate the engine with the
brake locked.
TESTING THE BRAKE
• Start the engine on a solid level surface and run
at a fast idle until warm.
Kickback
• Hold the saw firmly by the handles and acceler-
ate the engine to a fast idle.
• Slowly operate the chain brake lever while hold-
ing the saw firmly on the ground.
When the brake lever trips, the chain should
stop.
Immediately release the throttle trigger.
WARNING
If the chain does not stop immediately,
return the saw to your authorized ECHO
dealer for repair.
Chain brake function
When the lever is pushed forward, chain brake
instantly stops the chain.
NOTE
• For practice, while cutting a small tree, push
the lever forward to lock the brake.
• Confirm that the brake works properly before
each use.
• If the chain brake is clogged with wood chips,
function of the brake may deteriorate. Always
keep the device clean.
• Do not increase engine revolution while the
chain brake is locked.
• Use the chain brake only in starting or in emer-
gencies.
Chain brake unlock
When the lever is fully pulled, toward the
operator, brake is unlocked.
• When using throttle latch at starting, keep the
chain brake locked.
IMPORTANT
Do not allow the saw to tip forward in order to
avoid damage to the chain.
CS-450
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AUTOMATIC CHAIN BRAKE
Kickback produced from the tip of the guide bar will
trip the automatic chain brake. To make sure that
the automatic chain brake operates properly, follow
these steps:
End of the guide bar may be placed at the
height of about 50 cm (20 in.).
1. Stop the engine.
2. Hold the saw with the guide bar approximately
50 cm (20 in.) above a wooden surface. Right
hand should hold the rear handle, and left hand
should hold the front handle.
50 cm
(20 in.)
3. Release the front handle and drop the end of the
guide bar against the wooden surface.
4. The impact should lock the chain brake.
IMPORTANT
When checking the operation of the automatic
chain brake, use a soft surface substance like
wood to provide the impact so the chain is not
damaged.
Rear handle should be gripped lightly with the
right hand.
WINTER OPERATION
Use the winter plug to prevent carburetor trouble in
winter.
Air cleaner cover
Plug
• Remove air cleaner cover. Remove plug from
warm weather position, and install into cold
weather “storage” position.
Cold weather
“storage” position
Warm weather position
NOTE
For operation at normal temperature return the
plug to its original place. (5°C, 41°F)
It causes over heating of the engine.
CS-450
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CHAIN AND GUIDE BAR COMBINATION
The following combinations are recommended for model CS-450.
BAR
LENGTH
in (mm)
SAW CHAIN
GUIDE BAR
ECHO P/N
MODEL
ECHO PART
NO.
PITCH
LINKS
GAUGE
in (mm)
16F0AD3366
16F0AD3366
16F0MD3366
18F0AD3372
18F0AD3372
18F0MD3372
20BPX66CQ
33SL66CQ
95VP66CQ
20BPX72CQ
33SL72CQ
95VP72CQ
20BPX78CQ
33SL78CQ
0.325
(8.26)
16 (406)
66
0.050
CS-450
0.325
(8.26)
18 (457)
20 (508)
0.050
0.050
72
78
0.325
(8.26)
20FOAD3378
warning
Use of replacement saw chain and/or guide bar other than that specified, or operation without the “tip guard” in place,
may cause severe kickback resulting in serious injury.
Only use replacement guide bar and saw chain that has been designated as meeting the ANSI B175.1 - 2000
and/or CSA Z62.3 requirements. All of the guide bar and chain combinations listed above meet the ANSI
B175.1-200 and/or CSA Z62.3 requirements.
iMPOrTanT
Chain and guide bar gauge size must be identical. Use Bar/Chain combinations shown in table above.
iMPOrTanT
If your kick guard is damaged or lost, contact your Echo dealer for a replacement. For the name of the
Refer to your Chain Saw Safety Manual for kick guard application information.
Saw CHain
gUiDE Bar
(Low-kickback)
(Low-kickback)
Replacement guide bars.
The following guide bars may be considered to
have equivalent kickback energy.
• Sprocket nose guide bars of the same length and
nose radius, same pitch and having the same
number of teeth.
CaUTiOn
Do not use replacement saw chain unless
it has been designated as meeting the
ANSI B175.1 - 2000 kickback performance
requirements, when tested on the
representative sample of chain saws below
3.8 c.i.d. specified in ANSI B175.1 - 2000.
• Hard nose guide bars of the same length and
nose radius as a sprocket nose bar.
nOTE
LOW KICKBACK SAW CHAIN meets the
kickback performance requirements of ANSI
B175.1 - 2000 (safety requirements for gasoline-
powered chain saws).
CS-450
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MAINTENANCE AND CARE
warning
Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from
all openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a com-
plete stop before removing obstructions, clearing debris, or servicing unit. Allow unit to cool before performing
service. Wear gloves to protect hands from sharp edges and hot surfaces.
Your ECHO chain saw is designed to provide many hours of trouble free service. Regular scheduled maintenance will help your
chain saw achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want to take your unit to an
ECHO Service Dealer for maintenance. To help you decide whether you want to DO-IT-YOURSELF or have the ECHO Dealer do
it, each maintenance task has been graded. If the task is not listed ask your ECHO dealer for repairs.
SKILL LEVELS
Level 1 = Easy to do. Most required tools come with unit.
Level 2 = Moderate difficulty. Some specialized tools may be required.
ECHO offers REPOWER™ Maintenance Kits and Parts to make your maintenance job easier.
MAINTENANCE INTERVALS
REQ'D
SKILL
LEVEL
DAILY OR
BEFORE
USE
3 MONTHS
OR 90
HOURS
COMPONENT/
SYSTEM
MAINTENANCE
PROCEDURE
EVERY
REFUEL
YEARLY 600
HOURS
Air Filter
Inspect/Clean
1
1
1
1
1
1
I / C *
R *
Automatic Oiler
Oil Filter
Inspect/Adjust
Inspect/Replace
Inspect/Replace
Inspect/Replace
Replace
I
I
I/C *
Fuel System
Fuel Filter
I (1) *
I (1) *
I *
I *
I / R *
R *
Fuel Cap Gasket
Guide Bar & Sprocket
Nose
Inspect/Clean/Lubricate
1
2
I / C *
I
Inspect/Sharpen/Replace/
Tensioning
Saw Chain
I *
I *
Sprocket
Inspect/Replace
Inspect/Clean
Inspect/Clean
2
1
2
2
2
1
1
Spark Plug
Cooling System
I / C / R *
I / C
Muffler Spark Arrestor Inspect/Clean/Replace
Cylinder Exhaust Port Inspect/Clean/Decarbon
I / C / R *
I / C
Recoil Starter Rope
Screws/Nuts/Bolts
Inspect/Clean
I / C *
I *
Inspect/Tighten/Replace
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the
frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
* Replacement is recommended based on the finding of damage or wear during inspection.
CS-450
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Every unit is run at the factory and the carburetor
is set in compliance with Emission Regulations. In
addition, the carburetor is equipped with “H” (High
Speed) and “L” (Low Speed) needle adjustment
limiters that prevent settings outside acceptable
limits.
Idle adjusting screw
1. Before adjusting carburetor clean or replace air
filter and muffler “Spark Arrestor Screen”.
2. Make sure the bar and chain are properly ad-
justed.
Low speed needle (L)
High speed needle (H)
3. Start engine and run several minutes to bring to
operating temperature. Flash choke twice during
warm-up to clear any air from the fuel system.
4. Stop engine.
Turn “H” speed needle counterclockwise (CCW)
to stop.
Turn “L” speed needle midway between full
clockwise (CW) stop and CCW stop.
5. Idle Speed Adjustment:
CARBURETOR ADJUSTMENT
Engine Break-in
New engines must be operated a minimum dura-
tion of two tanks of fuel break-in before carbure-
tor adjustments can be made. During the break-in
period your engine performance will increase and
exhaust emissions will stabilize. Idle speed can
be adjusted as required.
• Start engine, turn “Idle” speed adjustment
screw CW until the saw chain begins to turn,
then turn screw out CCW until the saw chain
stops turning.
Turn screw out, CCW, an additional 1/4 turn.
WARNING
Cutting attachment must not move when unit
is idling.
High Altitude Operation
This engine has been factory adjusted to maintain
satisfactory starting, emission, and durability
performance up to 1100 feet above sea level (ASL)
(96.0 kPa). To maintain proper engine operation
and emission compliance above 1100 feet ASL
the carburetor may need to be adjusted by an
authorized ECHO service dealer.
6. Accelerate to full throttle for 2 - 3 seconds to
clear any excess fuel in the engine, then return
to idle.
Accelerate engine to full throttle to check for
smooth transition from idle to high speed.
If engine hesitates turn “L” needle CCW 1/8 turn
and repeat acceleration.
Continue adjustment until smooth acceleration
results.
IMPORTANT
If the engine is adjusted for operation above
1100 feet ASL, the carburetor must be
readjusted when operating the engine below
1100 feet ASL, otherwise severe engine damage
may result.
7. Check idle speed and reset if necessary as
described in item 5. If a tachometer is available
idle speed should be set to 2700 RPM.
CAUTION
When starting, idling adjustment speed
should be adjusted not to rotate the saw
chain. Correct idle speed is adjusted 2700
RPM. Or 1/4 turn CCW from the point the
chain stops moving.
When you experience trouble with the
carburetor, contact your dealer.
CS-450
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AIR FILTER
Cleaner cover knob
Spark plug
Air cleaner cover
• Check before every use.
• Loosen cleaner cover knob and remove air
cleaner cover and filter.
• Brush off dust lightly, or clean with compressed
air, or replace the air filter.
Air filter cover
Air filter
• Reinstall air filter and cover.
CHECK FUEL SYSTEM
• Check before every use.
• After refueling, make sure fuel does not leak
from around fuel pipe, fuel grommet or fuel tank
cap.
Cylinder cover
• In case of fuel leakage there is a danger of fire.
Stop using the machine immediately and re-
quest your dealer to inspect or replace.
SPARK PLUG
• Check periodically.
• The standard spark gap is 0.65 mm
(0.026 in.).
• Correct the spark gap if it is wider or
narrower than the standard gap.
• Fastening torque: 15 to 17 N·m
(130 to 145 in. lb.).
0.65 mm (0.026 in.)
FUEL FILTER
• Check periodically.
• Do not allow dust to enter fuel tank.
• A clogged filter will cause difficulty in starting
engine or abnormalities in engine performance.
• Pull the fuel filter out through fuel inlet port with
a piece of steel wire or the like.
• When the filter is dirty, replace it.
• When the inside of the fuel tank is dirty, rinsing
the tank out with gasoline can clean it.
Oil filter
Fuel filter
Fuel tank cap
Oil tank cap
nOTE
Federal EPA regulations require all model
year 2012 and later gasoline powered engines
produced for sale in the United States to be
equipped with a special low permeation fuel sup-
ply hose between the carburetor and fuel tank.
When servicing model year 2012 and later equip-
ment, only fuel supply hoses certified by EPA can
be used to replace the original equipment supply
hose. Fines up to $37,500 may be enforced for
using an un-certified replacement part.
OIL FILTER
• Check periodically.
• Do not allow dust to enter into oil tank.
• A clogged oil filter will affect the normal lubricating
system.
• Pull it out through oil filling hole with a piece of steel
wire or the like.
• If the filter is dirty, wash it in gasoline or replace it.
• When the inside of the tank gets dirty, rinsing the
tank out with gasoline can clean it.
CS-450
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GUIDE BAR
• Clean before using.
- Clean the groove of the guide bar with a small
screwdriver.
- Clean oil holes with a wire.
Groove
Oil hole
Clutch
(Sprocket)
• Reverse guide bar periodically.
• Check sprocket and the clutch and clean the bar
mount area before installation of the bar.
Replace either or both if worn.
SPROCKET
Worn : 0.5 mm (0.020 in.)
• A damaged sprocket will cause premature dam-
age or wear of saw chain.
- When the sprocket has worn out 0.5 mm
(0.020 in.) or more, replace it.
• Check sprocket when you install new chain.
Replace it if worn.
CYLINDER FINS
• Check periodically.
• Clogged fins will result in poor engine cooling.
• Remove dirt and dust from between fins to let
Cylinder fins
cooling air pass easily.
MUFFLER SPARK ARRESTOR
• Remove air cleaner cover and remove spark
plug lead.
Screen cover
Muffler
• Remove spark arrestor screen cover and screen
from muffler body.
• Clean carbon deposits from muffler components.
• Replace screen if it is cracked, or has holes
burned through.
Spark arrestor screen
Gasket
Inspect gasket, replace if damaged.
• Assemble components in reverse order.
NOTE
Carbon deposits in muffler will cause drop in
engine output. Spark arrestor screen must be
checked periodically.
AUTOMATIC OILER
Increase
Decrease
Adjusting screw
• The discharge volume of the automatic oiler is
adjusted to 4 mL/min approximately at 7000 r/
min, prior to shipment from factory.
- To increase the delivery volume, turn the
adjusting screw counterclockwise.
When the screw touches stopper and stops,
this position indicates maximum discharge
volume. (13 to 14 mL/min at 7000 r/min)
- Do not turn the adjusting screw beyond the
maximum or minimum limit of volume adjust-
ment.
CS-450
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EXHaUST POrT CLEaning
Parts Required: As needed: Muffler gasket
1. Remove air cleaner cover and remove spark plug
lead.
2. Remove guide bar and saw chain. See "Guide Bar
and Saw Chain Installation/Removal."
3. Remove muffler support bracket (A).
4. Place piston at top dead center. Remove muffler (B)
and muffler gasket (C ).
5. Use a wood or plastic scraping tool to clean depos-
its from cylinder exhaust port.
iMPOrTanT
Never use a metal tool to scrape carbon from the
exhaust port.
a
Do not scratch the cylinder or piston when cleaning
the exhaust port. Do not allow carbon particles to
enter the cylinder.
6. Inspect muffler gasket, and replace if damaged.
7. Install muffler gasket and muffler.
8. Tighten muffler mounting bolts (or nuts) to 60-95 in •
lbf (70-110 kgf • cm).
B
C
9. Install muffler support bracket (A).
10. Install guide bar and saw chain. See "Guide Bar and
Saw Chain Installation/Removal."
11. Install spark plug lead and air cleaner cover.
12. Start engine, and warm to operating temperature.
Stop engine.
13. Remove air cleaner cover and remove spark plug
lead.
14. Remove guide bar and saw chain. See "Guide Bar
and Saw Chain Installation/Removal."
15. Remove muffler support bracket.
16. Re-tighten mounting bolts (or nuts) to specifications.
17. Install muffler support bracket.
18. Install guide bar and saw chain. See "Guide Bar and
Saw Chain Installation/Removal."
19. Install spark plug lead and air cleaner cover.
CS-450
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SETTING THE SAW CHAIN
Preset tie strap
Left hand cutter
Drive link
Top plate
Side plate
Tie strap
Guard link
Depth
guage
Right hand cutter
Important points for proper maintenance of saw
chain:
• Keep the cutters sharp at all times.
• Keep the left and the right cutters properly
aligned.
- Note that blunt or irregular cutters will result in
poor cutting performance, increased vibration
of chains and premature breakage of the saw
chain.
Sharpen lower edge
• Drive link serves to remove sawdust from the
groove of the guide bar.
Keep the lower edge of the drive link sharp
where indicated.
33SL : 25°
20BPX, 95VP : 30°
SETTING SAW CHAIN
Proper filing tools for setting saw chain are avail-
able from your Echo dealer.
Keep this angle
• For setting saw chain, round file (33SL : 4.5 mm
dia. or 20BPX, 95VP : 3/16 in.) and flat file are
used.
Push file as shown
• To keep correct position and correct angle,
use the file holder (Sure Sharp®).
10°
Hold the file tipped 10° upward
CS-450
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1/5
One fifth of file diameter remains
above cutter edge
• Place the depth gauge tool firmly on guide
bar so that depth gauge protrudes.
Depth gauge tool
Then file top of depth gauge with the flat file until
flat with top of the depth gauge tool.
Remove until
flat with tool
- Be sure to round off the front edge of the
depth gauge.
Round off
the edge
Properly filed cutters are shown in illustration.
When setting of the chain is finished, soak it in oil
and wash away filings completely before using.
- When chain has been filed on the bar, supply
sufficient oil to it, rotate the chain slowly to wash
away the filings before using again.
- If the chain saw is operated with filings clogged
in the groove, the saw chain and the guide bar
will be damaged prematurely.
33SL : 25°
20BPX, 95VP : 30°
Top plate filing angle
- If the saw chain becomes soiled with resin, for
instance, clean it with kerosene and soak in it
oil.
20BPX :55°
33SL, 95VP :60°
0.64 mm (0.025 in.)
NOTE
These angles are referred to as Oregon 20BPX,
33SL, or 95VP.
To sharpen other follow chain manufacturer’s
instruction.
Parallel
Depth gauge
Top plate cutting angle
CS-450
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TROUBLESHOOTING
EnginE PrOBLEM TrOUBLESHOOTing CHarT
Problem
Check
Status
Cause
remedy
Clean or replace
Fuel at carburetor
No fuel at carburetor Fuel strainer clogged
Fuel line clogged
Clean or replace
Carburetor
See your Echo dealer
Fuel at cylinder
No fuel at cylinder
Carburetor
See your Echo dealer
Muffler wet with fuel Fuel Mixture too rich
Open choke
Engine
cranks -
starts hard/
doesn't
Clean/replace air filter
Adjust carburetor
See your Echo dealer
Spark at end
of plug wire
No spark
No spark
Stop switch off
Electrical problem
Interlock switch
Turn switch to ON
See your Echo dealer
See your Echo dealer
start
Spark at plug
Spark gap incorrect
Covered with carbon
Fouled with fuel
Adjust to .65mm (0.026 in.)
Clean or replace
Clean or replace
Plug defective
Replace plug
Air filter
Air filter dirty
Normal wear
Clean or replace
Fuel filter
Fuel filter dirty
Contaminants/residues in Replace
fuel
Fuel vent
Fuel vent plugged
Contaminants/residues in Clean or replace
fuel
Engine runs,
but dies or
does not
accelerate
properly
Spark Plug
Carburetor
Plug dirty/worn
Normal wear
Clean and adjust or replace
Improper adjustment Vibration
Adjust
Clean
Cooling System
Cooling system
dirty/plugged
Extended operation in
dirty/dusty locations
Spark Arrestor
Screen
Spark arrestor
screen plugged
Normal wear
Replace
Engine does
not crank
N/A
N/A
Internal engine problem
See your Echo dealer
WARNING
Fuel vapors are extremely flammable and
may cause fire and/or explosion. Never test
for ignition spark by grounding spark plug
near cylinder plug hole, otherwise serious
personal injury may result.
CS-450
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STORAGE AFTER USE
• Inspect and adjust every part of the chain saw.
WARNING
Do not store in an enclosure where fuel fumes
may accumlate or reach an open flame or spark.
- Completely clean every part and repair if neces-
sary.
- Apply thin coating of oil on metal parts to prevent
rust.
• Remove chain and guide bar.
CAUTION
• Drain fuel tank completely. Press purge bulb 6 - 7
times to remove remaining fuel from carburetor then
drain the tank again. Close choke, start and run the
engine until it stops due to lack of fuel.
• Allow engine to cool then remove the spark plug and
pour 7 cc (1/4 oz.) of fresh, clean, two-stroke engine
oil into the cylinder through the spark plug hole.
• Store in a dry area, free from dust.
Do not lend or rent your chain saw without the
Instruction manual and Safety manual.
NOTE
• For future reference, you should keep this Instruction
manual and the Safety manual.
• If this Instruction manual or the Safety manual has
become illegible or is lost, please contact your ECHO
TECHNICAL DATA
MODEL
CS-450
Dimension
Mass
L × W × H
mm
kg
400 × 252 × 278 (15.7 in. × 9.9 in. × 10.9 in.)
5.1 (11.2 lb.) Without chain and guide bar
Air-cooled two-stroke single cylinder
45.0 (2.746 c.u in.)
Power head, dry
Type
Engine
Displacement
mL (in3)
Carburetor
Magneto
Spark plug
Starter
Diaphragm type
Flywheel magneto: CDI system
NGK BPM8Y
Recoil starter
Power transmission
Automatic centrifugal clutch
Fuel
Mixture ratio
50 : 1 ratio with ECHO Power Blend X™, ISO-L-
EGD (ISO/CD 13738), JASO M345-FD
two- stroke, air-cooled engine oil.
Gasoline
Use 89 octane unleaded.
Donotusefuelcontainingmethylalcohol,morethan
10 % ethyl alcohol or 15 % MTBE.
Do not use alternative fuels such as E-15 or E-85.
Tank capacity
Bar and chain
Tank capacity
L
L
0.45 (15.2 US. fl. oz.)
Oil
ECHO bar and chain oil (or motor oil)
0.28 (9.5 US. fl. oz.)
Guide bar and
See page 23 for Chain and Guide Bar Combination
saw chain
Lubrication
Adjustable automatic oil pump
Engine speed Idle
Clutch engagement
Wide open throttle
r/min
r/min
r/min
2,700
4,000
12,500
Standard
features
Front hand guard, Rear hand guard,
Anti-vibration device, Spiked bumper,
Throttle control lockout, Chain brake,
Chain catcher, Spark arrestor muffler, Kick guard
* Technical data subject to change without notice.
CS-450
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ECHO LIMITED WARRANTY STATEMENT FOR
PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2010
ECHO'S RESPONSIBILITY
ECHO Incorporated’s Limited Warranty, provides to the original purchaser that this ECHO product is free from defects in material and workmanship.
Under normal use and maintenance from date of purchase, ECHO agrees to repair or replace at ECHO’s discretion, any defective product
free of charge at any authorized ECHO servicing dealer within listed below application time periods, limitations and exclusions. THIS LIMITED
WARRANTY IS ONLYAPPLICABLE TO ECHO PRODUCTS SOLD BYAUTHORIZED ECHO DEALERS. IT IS EXTENDED TO THE ORIGINAL
PURCHASER ONLY, AND IS NOT TRANSFERABLE TO SUBSEQUENT OWNERS EXCEPT FOR EMISSION RELATED PARTS. Repair
parts and accessories replaced under this warranty are warranted only for the balance of the original unit or accessory warranty period. Any
damage caused by improper installation or improper maintenance is not covered by this warranty. All parts or products replaced under warranty
become the property of ECHO, Inc. This warranty is separate from the Emission control warranty statement supplied with your new product.
Please consult the Emission Control Warranty Statement for details regarding emission related parts. For a list of Authorized ECHO Dealers
refer to WWW.ECHO-USA.COM or call 1-800-432-ECHO.
OWNER’S RESPONSIBILITY
To ensure trouble free warranty coverage it is important that you register your ECHO equipment on-line at WWW.ECHO-USA.COM or by fill-
ing out the warranty registration card supplied with your unit. Registering your product confirms your warranty coverage and provides a direct
link if we find it necessary to contact you.
The owner shall demonstrate reasonable care and use, and follow preventative maintenance, storage, fuel and oil usage as prescribed in the
operator’s manual. Should a product difficulty occur, you must, at your expense, deliver or ship your ECHO unit to an authorized ECHO servicing
dealer for warranty repairs (within the applicable warranty period), and arrange for pick-up or return of your unit after the repairs have been
made. For your nearest authorized ECHO servicing dealer, call ECHO’s Dealer Referral Center, at 1-800-432-ECHO or you can locate an ECHO
servicing dealer at WWW.ECHO-USA.COM. Should you require assistance or have questions concerning ECHO’s Warranty Statement, you
can contact our Consumer Product Support Department at 1-800-673-1558 or contact us through the web at WWW.ECHO-USA.COM.
PRODUCT WARRANTY PERIOD
RESIDENTIAL APPLICATION
•
5 YEAR WARRANTY - All units for residential, or non-income producing use will be covered by this limited warranty for five (5) years from
date of purchase.
EXCEPTIONS:
•
For two-stroke engine powered products, the electronic ignition module, flexible drive cables, SRM solid drive shafts, and TC tines
are warranted for the life* of the product on parts only.
•
Cutting attachments such as, but not limited to, bars, chains, sprockets, blades, and nylon trimmer heads for residential or non-income
producing use will be covered for failures due to defects in material or workmanship for a period of 60 days from original product
purchase date. Any misuse from contact with concrete, rocks, or other structures is not covered by this warranty.
ECHO’s Rapid Loader String Head carries a lifetime warranty on the line locking system, parts only; no labor. Refer to your operator’s
manual for string head installation and maintenance instructions.
•
•
All SB-Series and PRO ATTACHMENT SERIES Split Shaft attachments carry the same warranty duration as the units they are
designed to fit.
COMMERCIAL APPLICATION
•
1 YEAR WARRANTY - All Chain Saws, QuikVent Saws, and Cut-Off Saws for commercial, institutional, agricultural, industrial, or income
producing use will be covered by this limited warranty for one (1) year from the date of purchase.
•
2 YEAR WARRANTY - All other units for commercial, institutional, agricultural, industrial, or income producing use will be covered by this
limited warranty for two (2) years from the date of purchase.
EXCEPTIONS:
•
For two-stroke engine powered products, the electronic ignition module, flexible drive cables, SRM solid drive shafts and TC tines,
are warranted for the life* of the product on parts only.
•
Cutting attachments such as, but not limited to, bars, chains, sprockets, blades, and nylon trimmer heads for commercial, institutional,
agricultural, industrial, rental, or income producing will be covered for failures due to defects in material or workmanship for a period
of 30 days from original product purchase date. Any misuse from contact with concrete, rocks, or other structures is not covered by
this warranty.
•
•
ECHO’s Rapid Loader String Head carries a lifetime warranty on the line locking system, parts only; no labor. Refer to your operator’s
manual for string head installation and maintenance instructions.
All SB-Series and PRO ATTACHMENT SERIES Split Shaft attachments carry the same warranty duration as the units they are
designed to fit.
RENTAL APPLICATION - 90 DAYS WARRANTY
• Units for rental use will be covered against defects in material and workmanship for a period of 90 days from the date of purchase.
*
ECHO’s liability under the “Lifetime” coverage is limited to furnishing parts specified under the PROdUCT wARRANTy PERIOd section of
this warranty statement for “Life” free of charge for a period of ten (10) years after the date of the complete unit’s final production.
CS-450
33
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PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES
• 90-day residential, or non-income producing warranty
• 30-day commercial, institutional, agricultural, industrial, income producing, or rental application warranty
ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS
This ECHO two-stroke engine power product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior
performance. To help ensure the performance of the unit, it is required to use two-stroke oil which meets the ISO-L-EGD Standard per ISO/CD
13738 and JASO M345FD Standards. ECHO Power Blend™ Two-Stroke Oil is a premium two-stroke oil specifically formulated to meet ISO-
L-EGD (ISO/CD 13738) and JASO M345FD Standards. The use of two-stroke oils designed for other applications, such as for outboard motors
or lawnmowers can result in severe engine damage, and will void your two-stroke engine limited warranty.
THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY:
•
Lack of lubrication or engine failure, due to the use of two-stroke oils that do not meet the ISO-L-EGD (ISO/CD 13738) and JASO M345FD
Standards. Engine problems due to inadequate lubrication caused by failure to use an ISO-L-EGD compliant and JASO M345FD registered
oil, will void the two-stroke engine limited warranty. ECHO Power Blend™ Two-Stroke Oil meets the ISO-L-EGD and JASO M345FD
Standard. Emission related parts are covered for 5 years residential use or 2 years commercial use regardless of two-stroke oil used, per
the statement listed in the EPA or California Emission Defect Warranty Explanation.
•
damage caused by use of gasohol, containing methanol (wood alcohol), or gasoline containing less than 89 octane. Only use gasoline which
contains 89 octane or higher. Gasohol which contains a maximum 10% ethanol (grain alcohol) or 15% MTBE (methyl/tertiary/butyl/ether)
is also approved. The prescribed mixing ratio of gasoline to oil is listed on the ECHO oil label and covered in your operator’s manual.
Engine damage caused by use of ether or any starting fluids.
damage caused by tampering with engine speed governor or emission components, or running engines above specified and recommended
engine speeds as listed in your operator’s manual.
•
•
•
•
•
Operation of the unit with improperly maintained/removed cutting shield or removed/damaged air filter.
damage caused by dirt, pressure or steam cleaning the unit, salt water, corrosion, rust, varnish, abrasives, and moisture.
defects, malfunctions or failures resulting from abuse, misuse, neglect, modifications, alterations, normal wear, improper servicing, or use
of unauthorized attachments.
•
•
Incorrect storage procedures, stale fuel, including failure to provide or perform required maintenance services as prescribed in the operator's
manual. Preventative maintenance as outlined in the operators manual is the customer’s responsibility.
Failures due to improper set-up, pre-delivery service or repair service by anyone other than authorized ECHO servicing dealer during the
warranty period.
•
•
Certain parts and other items are not warranted, including but not limited to: lubricants, starter cords, and engine tune-ups.
Use of spark plugs other than those meeting performance and durability requirements of the OEM spark plug listed in the Operator's
Manuals.
•
Overheating or carbon scoring failures due to restricted, clogged exhaust port or combustion chamber, including damage to spark arrester
screen.
•
•
Adjustments after the first (30) thirty days and beyond, such as carburetor adjustment and throttle cable adjustment.
damage to gears or gear cases caused by contaminated grease or oil, use of incorrect type or viscosity of lubricants, and/or failure to comply
with recommended grease or oil change intervals.
•
•
•
damage caused by loading SHREd 'N' VAC® beyond recommended capacity.
damage caused by pump or sprayer running dry, pumping or spraying caustic or flammable materials, or lack of or broken strainers.
Additional damage to parts or components due to continued use after operational problem or failure occurs. Should operational problem or
failure occur, the product should not be used, but delivered as is to an authorized ECHO servicing dealer.
It is a dealer’s and/or customer’s responsibility to complete and return the warranty registration card supplied with your ECHO product or by visiting
WWW.ECHO-USA.COM. your receipt of purchase including date, model and serial number must be maintained and presented to an authorized
ECHO servicing dealer for warranty service. Proof of purchase rests solely with the customer. Some states do not allow limitations on how long
an implied warranty lasts, so the above limitations may not apply to you. Some states do not allow the exclusion or limitation of incidental or
consequential damages, so you may also have other specific legal rights which vary from state to state. This limited warranty is given by ECHO
Incorporated, 400 Oakwood Rd., Lake Zurich, IL 60047.
DISCLAIMER OF IMPLIED WARRANTIES
This limited warranty is in lieu of all other expressed or implied warranties, including any warranty of FITNESS FOR A PARTICULAR PURPOSE
OR USE and any implied warranty of MERCHANTABILITY otherwise applicable to this product. ECHO and its affiliated companies shall not be
liable for any special incidental or consequential damage, including lost profits. There are no warranties extended other than as provided herein.
This limited warranty may be modified only by ECHO.
99922201032
11/18/2011
CS-450
34
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ECHO INCORPORATED EMISSION CONTROL WARRANTY STATEMENT
FOR ECHO AND SHINDAIWA BRANDS
The Environmental ProtectionAgency (EPA) and the CaliforniaAir Resources Board (C.A.R.B.) and ECHO Incorporated (ECHO Inc.) are pleased
to explain the emission control system warranty on your 2010 and later equipment/small off-road engine (SORE). New equipment/SORE must be
designed, built and equipped to meet stringent EPA and C.A.R.B. anti-smog standards. ECHO Inc. must warrant the emission control system on
your equipment/SORE for the periods of time listed below, provided there has been no abuse, neglect or improper maintenance of your equipment/
SORE. Your emission control system may include parts such as: carburetor, fuel-injection system, ignition system, catalytic converter/muffler, fuel
tank, fuel feed lines, fuel cap assembly, spark plug, air filters, and other associated components. Where a warrantable condition exists, ECHO
Inc will repair your equipment/SORE at no cost to you including diagnosis, parts and labor. The Emission Control System warranty is extended
to the original owner including all subsequent owners.
MANUFACTURER'S WARRANTY COVERAGE:
The emission control system is warranted for 2 years or the length of the ECHO Inc. warranty, whichever is longer. If any emission-related part
on your equipment is defective, the part will be repaired or replaced by ECHO Inc. or its Authorized Service Representative.
OWNER'S WARRANTY RESPONSIBILITIES:
As the equipment/SORE owner, you are responsible for the performance of the required maintenance listed in your Operator's Manual. ECHO
Inc. recommends that you retain all receipts covering maintenance on your equipment/SORE however, ECHO Inc. cannot deny warranty solely
for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance. As the equipment/SORE owner, you should be
aware that ECHO Inc. may deny you warranty coverage if your equipment/SORE or a part has failed due to abuse, neglect, improper maintenance
or unapproved modifications.
You are responsible for presenting your equipment/SORE to an ECHO Inc. authorized service representative as soon as a problem exists. The
warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. If a warrantable condition exists and there is no
Authorized Dealer within 100 miles, ECHO Inc. will pay to ship the unit to the nearest authorized dealer. If you have questions regarding your
warranty coverage, you should contact ECHO Inc. at 1-800-673-1558, web site WWW.ECHO-USA.COM or contact Shindaiwa at 1-877-986-
7783, web site WWW.SHINDAIWA.COM.
WHAT DOES THIS WARRANTY COVER?
ECHO Inc. warrants that your equipment/SORE was designed, built and equipped to conform with applicable EPA and C.A.R.B. emissions
standards and that your equipment/SORE is free from defects in material and workmanship that would cause it to fail to conform with applicable
requirements for 2 years or the length of the ECHO Inc. warranty, whichever is longer. The warranty period begins on the date the product is
purchased by an end user.
HOW WILL A COVERED PART BE CORRECTED?
If there is a defect in a part covered by this warranty, any ECHO Inc. Authorized Service Dealer will correct the defect. You will not have to pay
anything to have the part adjusted, repaired or replaced. This includes any labor and diagnosis for warranted repairs performed by the dealer. In
addition, engine parts not expressly covered under this warranty but whose failure is a result of a failure of a covered part will be warranted.
WHAT PARTS ARE COVERED?
Any applicable emission related part not scheduled for "required maintenance" will be repaired or replaced within the warranty period. The repaired
or replaced part will be warranted for the remaining ECHO Inc. warranty period.
Any warranted part that is scheduled only for regular inspection in the written instructions supplied is warranted for the warranty period stated
above. Any such part repaired or replaced under warranty will be warranted for the remaining ECHO Inc. warranty period.
Any emission related part scheduled for replacement during "required maintenance" is warranted for the period of time prior to the first scheduled
replacement point for that part. Any such part repaired or replaced under warranty shall be warranted for the remainder of the period prior to the
first scheduled replacement point for that part.
Any manufacturer-approved replacement part may be used in the performance of any warranty maintenance or repairs on emission related parts,
and must be provided without charge if the part is still under warranty.
Any replacement part that is equivalent in performance and durability may be used in non-warranty maintenance or repairs, and shall not reduce
the warranty obligations of the manufacturer.
Throughout the equipment/SORE warranty period, ECHO Inc. will maintain a supply of warranted parts sufficient to meet the expected demand
for such parts.
SPECIFIC EMISSION RELATED WARRANTED PARTS:
• Electronic Ignition System
• Catalytic Converter / Muffler Assembly
• Choke
• Spark Plug
• Carburetor (complete assembly or replaceable components)
• Fuel-Injection Assembly (or replaceable components)
• Fuel Cap Assembly
• Fuel Tank
• Air Filter
• Fuel Feed Line (and associated clamps/connectors as applicable)
WHAT IS NOT COVERED?
Any failure caused by abuse, neglect, improper maintenance, unapproved modifications, use of unapproved add-on parts/modified parts or
unapproved accessories.
99922201033
01/2010
This Emission Control Warranty is valid only for the U.S.A., it's Territories, and Canada.
CS-450
35
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sErvicing inFormation
parts/sErial numbEr
Genuine ECHO Parts and ECHO REPOWER™ Parts and Assemblies
for your ECHO products are available only from an Authorized ECHO
Dealer. When you do need to buy parts always have the Model Num-
ber, Type and Serial Number of the unit with you. You can find these
numbers on the engine housing. For future reference, write them in the
space provided below.
Model No. __________________SN. ___________________
sErvicE
Service of this product during the warranty period must be performed
by an Authorized ECHO Service Dealer. For the name and address of
the Authorized ECHO Service Dealer nearest you, ask your retailer or
call: 1-800-432-ECHO (3246). Dealer information is also available on
our Web Site. When presenting your unit for Warranty service/repairs,
proof of purchase is required.
DEaLEr? Call
1-800-432-ECHO
1-800-432-3246
or
Echo consumEr proDuct support
If you require assistance or have questions concerning the applica-
tion, operation or maintenance of this product you may call the ECHO
Consumer Product Support Department at 1-800-673-1558 from 8:30
am to 4:30 pm (Central Standard Time) Monday through Friday. Before
calling, please know the model and serial number of your unit.
COnSUMEr PrODUCT
SUPPOrT
1-800-673-1558
8:30 - 4:30 Mon - Fri C.S.T.
warranty rEgistration
To ensure trouble free warranty coverage it is important that you regis-
ter your ECHO equipment on-line at www.echo-usa.com or filling out
the warranty registration card supplied with your unit. Registering your
product confirms your warranty coverage and provides a direct link
between you and ECHO if we find it necessary to contact you.
aDDitional or rEplacEmEnt manuals
Replacement Operator, Safety Manuals, and Parts Catalogs are available from your ECHO dealer or at www.echo-
usa.com or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047 (800-673-1558). Always check the
ECHO Web Site for updated information.
Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be required for each video.
ECHO, inCOrPOraTED
400 OakwOOd ROad
Lake ZuRich, iL 60047-1564
C05812001001/C05812999999
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