Echo Chainsaw 2CS 450 User Manual

Chain Saw

Instruction Manual

MODEL : CS-450

WARNING

Read rules for safe operation and instructions carefully. ECHO provides an Instruc-

tion Manual and a Safety Manual. Both must be read and understood for proper and

safe operation.

X750010903

12/10

X7503196703

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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 .........................................................................................................................

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

Part Number X503-008770

Part Number X524-003720

CS-450

WARNING!! Read and follow all

safety precaution in the instruction

manual. Failure to follow

instructions could result in serious

personal injury.

Part Number 890191-30131

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. The

complete unit illustration found in the “NOMEN-

CLATURE OF PARTS” section will help you locate

them. Make sure the decals are legible and that

you understand and follow the instructions on

them. If a decal cannot be read, a new one can be

ordered from your ECHO dealer.

CS-450

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Em is s io n Da t a

E m is s io n c o n t r o l (E x h a u s t & E v a p o r a t iv E )

EPA Phase 2 / C.A.R.B. TIER III

The emission control system for the engine is EM/TWC

(Engine Modiﬁcation and 3-way Catalyst) and for the fuel

tank the Control System is EVAP (Evaporative Emissions)

or N (for nylon tank). Evaporative emission may be appli-

cable to California models only.

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 emis-

sions 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

CS-450

Part Number X524-003720

X524-003720

890191-30131

X503-008770

Part Number 890191-30131

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.

Part Number X503-008770

CS-450

WARNING!! Read and follow all

safety precaution in the instruction

manual. Failure to follow

instructions could result in serious

personal injury.

* If a decal cannot be read, a new one can be

ordered from your ECHO dealer.

CS-450

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NOMENCLATURE OF PARTS

12. Spiked bumper - Device, ﬁtted in front of the

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.

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.

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.

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.

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

neck, feet and ankles and hands and wrists.

• Maintain good blood circulation by performing vigor-

If this guideline is not followed, hearing loss can oc-

cur.

ECHO recommends wearing hearing protection at all

times.

ous arm exercises during frequent work breaks and

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.

Reduced radius

belongs on top

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

Liner 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

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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Fu E l a n D lu b r ic a n t

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.

F u E l s t a t E m E n t

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 X^TMUniversal 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 X^TM,

will void the two-stroke engine warranty.

IMPORTANT

Echo premium Power Blend X^TMUniversal 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 around dry vegetation. This unit is equipped

with a spark arrestor and a spark arrestor may be required. The operator should contact local ﬁre agencies for

laws or regulations relating to ﬁre prevention requirements.

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 chain brake only in starting or in

emergencies.

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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.

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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.

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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

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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°

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.

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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.

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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.

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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.

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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

16F0MD3366

18F0AD3372

18F0MD3372

20BPX66CQ

33SL66CQ

95VP66CQ

20BPX72CQ

33SL72CQ

95VP72CQ

20BPX78CQ

33SL78CQ

0.325

(8.26)

16 (406)

0.050

CS-450

0.325

(8.26)

18 (457)

20 (508)

0.050

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

Echo dealer nearest you, Call: 1-800-432-ECHO (3246) or on the web at www.echo-usa.com.

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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

I / C *

R *

Automatic Oiler

Oil Filter

Inspect/Adjust

Inspect/Replace

Replace

I/C *

Fuel System

Fuel Filter

I (1) *

I *

I / R *

R *

Fuel Cap Gasket

Guide Bar & Sprocket

Nose

Inspect/Clean/Lubricate

I / C *

Inspect/Sharpen/Replace/

Tensioning

Saw Chain

I *

Sprocket

Inspect/Replace

Inspect/Clean

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.

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CARBURETOR ADJUSTMENT

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:

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.

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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.

Oil ﬁlter

• 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.

Fuel ﬁlter

Fuel tank cap

Oil tank cap

OIL FILTER

• Check periodically.

• Do not allow dust to enter into oil tank.

• A clogged oil ﬁlter will affect the normal lubricat-

ing 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.

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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.

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ExhAuST PORT ClEANINg

Level 2

Tools required: T-Wrench, 4 & 5 mm Hex Wrench, Wood or

plastic scraper

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.

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).

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.

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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

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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

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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

Stop switch off

Electrical problem

Interlock switch

Turn switch to ON

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

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

Spark Plug

Plug dirty/worn

Normal wear

Clean and adjust or replace

accelerate

properly

Carburetor

Improper adjustment Vibration

Adjust

Cooling System

Cooling system

dirty/plugged

Extended operation in

dirty/dusty locations

Clean

Spark Arrestor

Spark arrestor

Normal wear

Replace

Screen

screen plugged

Engine does

N/A

Internal engine problem

See your Echo dealer

not crank

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.

• Drain fuel tank, pull starter slowly a few times to

drain fuel from carburetor.

• Pour a small amount of clean motor oil into spark

plug hole, pull starter and crank the engine until

piston reaches: TOP DEAD CENTER.

• Store in a dry area, free from dust.

CAUTION

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

dealer, or go to www.ech0-usa.com.

TECHNICAL DATA

MODEL

CS-450

Dimension

Mass

L × W × H

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

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

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

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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 M345/FC/FD 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 M345/FC/FD 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 M345/

FC/FD Standards. Engine problems due to inadequate lubrication caused by failure to use an ISO-L-EGD compliant and JASO M345/FC/

FD registered oil, will void the two-stroke engine limited warranty. ECHO Power Blend™ Two-Stroke Oil meets the ISO-L-EGD and JASO

M345/FC/FD 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

12/03/09

CS-450

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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

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sE r v ic in g in F o r m a t io n

^{p a r t s}/s E r ia l n u m b E r

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. ___________________

s E r v ic E

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

www.echo-usa.com

E c h o c o n s u m E r p r o D u c t s u p p o r t

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.

w a r r a n t y r E g is t r a t io n

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.

a D D it io n a l o r r E p l a c E m E n t m a n u a l s

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 Oa k w O O d RO a d

La k e Zu R ic h , iL 60047-1564

www.echo-usa.com

C05812001001/C05812999999

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