Echo CS-341 User manual

X7503206104 X750009894
04/12
WARNING
Users of this equipment risk injury to themselves and others if the unit is used im-
properly 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.
Chain Saw
Instruction Manual
MODEL : CS-341

2
Rules foR safe opeRation
A. Kickback Safety Precaution for Chain Saw Users
B. Other Safety Precautions
1. Do not operate a chain saw with one hand! Serious
injury to the operator, helpers, bystanders, or any com-
bination of these persons may result from one-handed
operation. A chain saw is intended for two-handed
use.
2. Do not operate a chain saw when you are fatigued.
3. Use safety footwear; snug-tting clothing; protective
gloves; and eye, hearing and head protection devices.
Wear protective hair covering to contain long hair.
4. Use caution when handling fuel. Move the chain saw at
least 3 m (10 feet) from the fueling point before starting
the engine.
5. Do not allow other persons to be near the chain saw
when starting or cutting with the chain saw. Keep by-
standers and animals out of the work area.
6. Do not start cutting until you have a clear work area,
secure footing, and a planned retreat path from the
falling tree.
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.
9. Carry the chain saw with the engine stopped, the guide
bar and saw chain to the rear, and the mufer away
from your body.
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.
Copyright© 2012 By Echo, Incorporated
All Rights Reserved.
WARNING!
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.
Tip contact in some cases may cause a lightning fast
reverse REACTION, Kicking the guide bar up and back
towards the operator. Pinching the saw chain along the
top of the guide bar may push the guide bar rapidly back
towards the operator. Either of these reactions may cause
you to lose control of the saw which could result in serious
personal injury.
The Kick Guard ® device is not installed on the guide bar
when you purchase your ECHO chain saw. The Kick Guard
® can be used in a majority of cutting operations, and is
especially recommended for beginners, homeowners, or
chain saw novices. Most cutting operations can be ac-
complished with the Kick Guard®in place.
Do not rely exclusively upon the safety devices built into
your saw. As a chain saw user, you should take several
steps to keep your cutting jobs free from accident or in-
jury.
1. With a basic understanding of kickback, you can reduce
or eliminate the element of surprise. Sudden surprise
contributes to accidents.
2. Keep a good rm grip on the saw with both hands, the
right hand on the rear handle, and the left hand on the
front handle, when the engine is running. Use a rm
grip with thumbs and ngers encircling the chain saw
handles. A rm grip will help you reduce kickback and
maintain control of the saw. Don’t’ let go.
3. Make sure that the area in which you are cutting is free
from obstructions. Do not let the nose of the guide bar
contact a log, branch, or any other obstruction which
could be hit while you are operating the saw.
4. Cut at high engine speeds.
5. Do not overreach or cut above shoulder height.
6. Follow manufacturer’s sharpening and maintenance
instructions for the saw chain.
7. Only use replacement bars and chains specied by
the manufacturer or the equivalent.

3
11. Shut off the engine before setting the chain saw
down.
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.
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 bers is released.
14. Keep the handles dry, clean, and free of oil or fuel
mixture.
15. Operate the chain saw only in well-ventilated areas.
16. Do not operate a chain saw in a tree unless you have
been specically trained to do so.
17. All chain saw service, other than the items listed in
the Instruction Manual maintenance instructions,
should be performed by competent chain saw service
personnel. (For example, if improper tools are used
to remove the ywheel or if an improper tool is used
to hold the ywheel in order to remove the clutch,
structural damage to the ywheel could occur and
could subsequently cause the ywheel to burst.)
18. When transporting your chain saw, use the appropri-
ate guide bar scabbard.
19. Spark arrestor mufers approved to SAE Standard
J335b are Standard on ECHO Chain saws to reduce
the possibility of forest res. Do not operate the chain
saw with a loose or defective mufer. Do not remove
the spark arrestor screen.
WARNING
Using improper replacement components or removing safety devices may result in serious or fatal injury.
WARNING
• During operation, the mufer or catalytic mufer and surrounding cover become hot.
• Never suspend the saw on a lanyard with the engine running.
• 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 mufer.
• Always keep exhaust area clear of ammable debris during transportation or when storing,
otherwise serious property damage or personal injury may result.
WARNING
Moving parts can amputate ngers 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.
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.

4
inteRnational symbols
Contents
Page
Rules for Safe Operation..................................................................................................2
Technical Data..................................................................................................................5
Emission Data ..................................................................................................................6
Description........................................................................................................................6
Nomenclature of Parts......................................................................................................7
Preparation for Use ..........................................................................................................8
Fuel and Lubricant............................................................................................................9
Operation........................................................................................................................ 11
Cutting Instructions.........................................................................................................14
Maintenance and Care ...................................................................................................17
- Carburetor Adjustment ................................................................................................ 22
- High Altitude Operation ............................................................................................. 22
Chain and Guide Bar Combinations...............................................................................23
Troubleshooting..............................................................................................................25
Storage...........................................................................................................................26
Correct Use of Chain Brake............................................................................................26
Warranty Statements......................................................................................................28
Servicing Information......................................................................................................32

5
Model............................................................................................. CS-341
Dimension L x W x H ..................................................................... 260 x 235 x 220 mm (10.2 x 9.2 x 8.7 inch)
Weight Power head, dry ................................................................ 3.3 kg (7.3 lb) Without chain and guide bar
Engine .................................................... Type .............................. Air-cooled, two-stroke, single cylinder
................................................................ Displacement................ 33.4 cc (2.03 cu.in.)
................................................................ Carburetor..................... Diaphragm type (ml)
................................................................ Magneto........................ Flywheel magneto : CDI system
................................................................ Spark Plug .................... NGK BPM-8Y
................................................................ Starter........................... Recoil starter
................................................................ Power transmission ...... Automatic centrifugal clutch
Fuel......................................................... Mixture ratio .................. 50 : 1 Power Blend XTM ISO-L-EGD (ISO/CD 13738)
....................................................................................................... and J.A.S.O. M345- FD, two-stroke, air-cooled
....................................................................................................... engine oil..
................................................................ Gasoline........................ Use 89 Octane unleaded. Do not use fuel containing
....................................................................................................... methyl alcohol, more than 10% ethyl alcohol or 15%
....................................................................................................... MTBE. Do not use alternative fuels such as E-15 or
....................................................................................................... E-85.
Oil .................................................................................................. Power Blend X TM Premium Universal 2-Stroke Oil
................................................................ Tank Capacity ............... 0.26 L (9.0  oz U.S.)
................................................................ Bar and chain................ ECHO bar and chain oil (or motor oil)
................................................................ Tank Capacity ............... 0.15 L (5 . oz. U.S.)
................................................................ Lubrication .................... Adjustable automatic oil pump
Guide bar / Saw chain ................................................................... 14 in. Standard / 12, 16 in. Optional
Standard features.......................................................................... Top Handle
....................................................................................................... Front hand guard,
....................................................................................................... Anti-vibration device,
....................................................................................................... Throttle control lockout, Chain brake,
....................................................................................................... Chain catcher, Spark arrestor catalytic mufer
Idle Speed .................................................................................... 3,000 RPM
Clutch Engagement....................................................................... 4,200 RPM
Wide Open Throttle (WOT)............................................................ 11,750 RPM
Kickback Safety Features............................................................. Double Guard Low Kick Guide Bar
....................................................................................................... Low Kick Guard Link Saw Chain
....................................................................................................... Front Hand Guard/Chain Brake Lever
....................................................................................................... Chain Brake
....................................................................................................... Kick Guard
teChniCal Data
* Technical data subject to change without notice.

6
emission Data
DesCRiption
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restric-
tions, guide bar and saw chain installation and other assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing
parts. Use the contents list to check for missing parts.
Contents
1 - Power Head
1 - Guide Bar
*1 - Kick Guard
1 - Hex Head Bolt
1 - Hex Nut
*1 - Saw Chain
1 - Instruction Manual
1 - Safety Manual
1 - Warranty Registration Card
1 - Assembly Tool (s)
1 - Echo Power BlendX TM 2-stroke oil sample
* The machine may be delivered with guide bar and saw chain assembled.
*
X7503206101 X750009891
11/08
WARNING
Readrules for safe operation and instructions carefully. ECHO provides an Instruc-
tionManual and a Safety Manual. Both must be read and understood for proper and
safeoperation.
Chain Saw
Instruction Manual
MODEL : CS-341
An Emission Control Label is located on the engine. (is
is an EXAMPLE ONLY, information on label varies by
engine FAMILY).
emission ContRol (exhaust &evapoRative)
EPA 2010 and Later and/or C.A.R.B. TIER III
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
e 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.
e emission control system for the engine is EM (engine
modication) and, if the second to last character of the Engine
Family on the Emission Control Information label (sample
below) is “C”, “K”, or “T”, the emission control system is EM
and TWC (3-way catalyst). e fuel tank/fuel line emission
control system is EVAP (evaporative emissions). Evaporative
emissions for California models may only be applicable to fuel
tanks.

7
1. Hand guard
(Chain brake locking lever)
2. Throttle control lockout
3. Throttle control trigger
4. Sprocket guard
5. Chain catcher
6. Air cleaner cover
7. Purge bulb
8. Guide bar
9. Saw chain
10. Front handle
11. On / Off switch
12. Fuel tank cap
13. Pull starter
14. Oil tank cap
15. Throttle control latch
16. Tip guard
17. Catalytic mufer
18. Lanyard ring
19. Spark Plug
20. Rear Handle
nomenClatuRe of paRts
ADVERTENCIA PELIGRO
Esta unidad puede ser peligrosa y producir lesiones person-
ales graves si no se usa en forma adecuada.
Para reducir el riesgo de lesioarse, los operadores, los
ayudantes y los espectadores deben leer y comprender el Manual Del
Operador y los Manuales De Seguridad que se entregan escritos en
español.
REPLACEMENT BAR AND CHAIN
Note:There may be other replace-
ment components for achieving
kickback protection. For details,
please refer to the chain and
bar combination sheet shown in
the instruction manual.
GUIDE BAR*CHAIN*
PART NO. TYPE LINKS
12” 12A0CD3745 OREGON 91VG 45
14” 14A0CD3752 OREGON 91VG 52
16” 16A0CD3757 OREGON 91VG 57
1
2
3
4
5
6
7
8
910
11
12
13
14
15
16
17
18
19
20
Chain brake must be unlocked before removing or
installing clutch cover. Improper cover installation can
result in serious injury and cause severe damage to
saw.
El freno de la cadena debe ser desbloqueado antes
de remover o de instalar la cubierta del embrague. La
instalación incorrecta de la cubierta puede dar lugar a
lesión seria y causar daño severo a la sierra.
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.

8
WARNING
IMPROPER CLUTCH COVER ASSEMBLY CAN RE-
SULT IN SERIOUS INJURY, AND WILL CAUSE SE-
VERE 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.
pRepaRation foR use
H
I
J
7. Turn saw over and check brake band for correct
position around clutch drum. If brake band is not
in place around drum, remove clutch cover, make
sure brake is released, and reinstall.
CAUTION!
• When starting, idling adjustment speed should be adjusted not to rotate the saw chain.
• When there is trouble with the carburetor, refer to your distributor or dealer.
kiCk guaRD® to baR instRuCtions
For saws with Kick Guard®P/N 2894901 and symmetri-
cal or asymmetrical low-kick type guide bars.
1. Install bolt (A) in rear hole (B) of Kick Guard®and
through front hole (C) in guide bar.
2. IMPORTANT: Dimple in Kick Guard®(D) must engage
recess in guide bar (E).
3. Tighten nut (F) and bolt (A) until snug. Make certain
Kick Guard® is ush against guide bar.
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.
guiDe baR anD saw Chain-install/
Remove
WARNING
Saw Chain is sharp! Always wear gloves when handling
assembly, otherwise serious personal injury may result.
NOTE
Move chain brake lever fully rearward to remove or install
clutch cover to saw.
IMPORTANT
Always loosen guide bar nuts before turning chain
tension adjuster, otherwise clutch cover and tensioner
will be damaged.
1. Remove spark plug lead.
2. Remove two guide bar nuts and remove guide bar cover.
Turn tension adjustment screw counterclockwise 2 to 3
turns if bar and chain are installed.
3. Remove guide bar and saw chain if necessary.
NOTE: See “MAINTENANCE AND CARE” instructions
for guide bar, sprocket, and saw chain maintenance.
4. Mount guide bar (G) on studs, and slide toward sprocket
to make saw chain installation easier.
5. Install saw chain (H) as shown, with cutters on top of
guide bar facing forward.
6. Align holes of clutch cover (J) with guide bar studs,
and tensioner pin (I) with lower guide bar adjuster hole.
G

9
aDjustment, Chain tension
IMPORTANT
Always loosen guide bar nuts before turning chain
tension adjuster, otherwise clutch cover and tensioner
will be damaged.
1. Remove spark plug lead.
2. Loosen two guide bar nuts, if necessary.
3. Hold the bar nose up, and turn the adjuster screw (L)
clockwise until chain ts snugly against underside of
bar.
4. Tighten both guide bar nuts with bar nose held up.
5. Pull the saw chain around the guide bar by hand.
Reduce chain tension, if you feel tight spots.
6. When chain is properly tensioned, tighten guide bar
nuts securely - 90 – 110 kgf • cm (80 – 95 in • lbf.).
7. Keep chain properly tensioned at all times.
NOTE
All chains require frequent adjustments.
L
fuel anD lubRiCant
NOTICE: Use of unmixed, improperly mixed, or fuel older than 90 days, (stale fuel), may cause hard starting, poor
performance, 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 approved.
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 TM 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 certied oil, such as
Echo premium Power Blend X TM, will void the two-stroke engine warranty.
IMPORTANT
Echo premium Power Blend X TM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo en-
gines sold in the past regardless of ratio specied in those manuals.

10
Handling Fuel
DANGER
Fuel is VERY ammable. 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 ames 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 RUN-
NING!
• DO NOT ll fuel tanks indoors. ALWAYS ll fuel tanks
outdoors over bare ground.
• DO NOT overll 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.
Mixing Instructions
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
• DO NOT store a unit with fuel in its tank. Leaks
can occur. Return unused fuel to an approved
fuel storage container.
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 ames.
IMPORTANT
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.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container thoroughly
before each use.
Chain lubRiCant
Proper lubrication of the chain while in operation reduces fric-
tion between the chain and the guide bar to a minimum 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 rell chain oil.
FUEL TANK OIL TANK
TANK INDICATION
Fuel Mix Chart
50:1

11
11
A
B
C
O PERATION
STARTING
COLD ENGINE
WARNING
Make sure bar and chain are not touching anything when starting
the saw.
1. Move chain brake lever fully forward to lock chain brake before
starting.
2. Fill the fuel tank with fuel. Do not over fill.
3. Fill the chain oil tank with lubricant. Do not over fill.
4. Lay unit on a flat, clear area and keep bar and chain clear of all
obstacles.
5. Turn switch (A) to “RUN” position (I).
6. Pull choke (B) all the way out (closed position).
7. Push purge bulb (C) 10 times.
8. Pull starter handle several times until first firing sound is heard.
(Secure unit on ground with your knee or foot.) (5 - 6 pulls
maximum.)
9. Push choke (B) all the way in. (open position)
10. Pull starter handle again.
NOTE
If engine does not start after 5 pulls, repeat instructions.
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 blow exhaust away from your
face and body.
opeRation
WARNING
Moving parts can amputate ngers 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 res. 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 re authorities for laws or regulations regarding re prevention
requirements.
WARNING
The ignition components of this machine generate an electromagnetic eld 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.
11
A
B
C
O PERATION
STARTING
COLD ENGINE
WARNING
Make sure bar and chain are not touching anything when starting
the saw.
1. Move chain brake lever fully forward to lock chain brake before
starting.
2. Fill the fuel tank with fuel. Do not over fill.
3. Fill the chain oil tank with lubricant. Do not over fill.
4. Lay unit on a flat, clear area and keep bar and chain clear of all
obstacles.
5. Turn switch (A) to “RUN” position (I).
6. Pull choke (B) all the way out (closed position).
7. Push purge bulb (C) 10 times.
8. Pull starter handle several times until first firing sound is heard.
(Secure unit on ground with your knee or foot.) (5 - 6 pulls
maximum.)
9. Push choke (B) all the way in. (open position)
10. Pull starter handle again.
NOTE
If engine does not start after 5 pulls, repeat instructions.
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 blow exhaust away from your
face and body.

12
when engine is haRD to staRt
WARNING
Clutch engages and chain may rotate when engine is started
with throttle control latch engaged. Never use the throttle control
latch for cutting. Use only when starting the engine.
1. Ensure that there is fuel and chain oil in the tanks.
2. Move chain brake lever fully forward to lock chain brake before
starting.
3. Lay unit on a at, clear area and keep bar and chain clear of all
obstacles.
4. Press throttle control lockout down, squeeze throttle trigger, and
push in throttle control latch.
5. Turn switch (A) to “RUN” position (I).
6. Pull starter handle.
7. When engine starts, immediately squeeze throttle trigger to
release the latch otherwise damage to clutch may result.
NOTE
Do not pull starter rope out to the maximum possible position.
Do not allow recoil handle to snap back against the casing.
A
B
C
Securely hold the saw
11
A
B
C
O PERATION
STARTING
COLD ENGINE
WARNING
Make sure bar and chain are not touching anything when starting
the saw.
1. Move chain brake lever fully forward to lock chain brake before
starting.
2. Fill the fuel tank with fuel. Do not over fill.
3. Fill the chain oil tank with lubricant. Do not over fill.
4. Lay unit on a flat, clear area and keep bar and chain clear of all
obstacles.
5. Turn switch (A) to “RUN” position (I).
6. Pull choke (B) all the way out (closed position).
7. Push purge bulb (C) 10 times.
8. Pull starter handle several times until first firing sound is heard.
(Secure unit on ground with your knee or foot.) (5 - 6 pulls
maximum.)
9. Push choke (B) all the way in. (open position)
10. Pull starter handle again.
NOTE
If engine does not start after 5 pulls, repeat instructions.
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 blow exhaust away from your
face and body.
Securely hold the saw

13
Running
WARNING
The saw chain should not move at idle, otherwise serious per-
sonal injury may result.
NOTE
If saw chain moves adjust carburetor according to “Carburetor
Adjustment” instructions in this manual, or see your dealer.
• After engine starts, allow it to return to idle.
• Move chain brake lever fully rearward to unlock chain brake.
• Press throttle control lockout then gradually squeeze throttle
trigger to increase engine speed.
• Saw chain starts moving when the engine reaches approxi-
mately 4200 rpm.
• Ensure 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.
stopping
1. Release throttle trigger and turn switch (A) to STOP (O) posi-
tion.
2. Move chain brake lever fully forward to lock chain brake.
NOTE
If engine does not stop, pull choke out fully to stop engine.
Return the unit to your authorized ECHO dealer to check and
repair stop switch before starting the engine again.
A
staRting waRm engine
1. Ensure that there is fuel and chain oil in the tanks. (If fuel tank
was emptied during previous operation, rell tank and push
purge bulb 10 times.)
2. Move chain brake lever fully forward to lock chain brake be-
fore starting.
3. Lay unit on a at, clear area and keep bar and chain clear of
all obstacles.
4. Turn switch (A) to “RUN” position (I).
5. Pull starter handle.
6. Choke may be used if necessary, but be sure to push it back
on rst ring sound.
NOTE
If engine does not start after 5 pulls, use cold start procedure.
A

14
WARNING
Read the ECHO “CHAIN SAW SAFETY MANUAL” included
with your chain saw for additional cutting and safety instruc-
tions. Failure to obey all instructions may result in serious
or fatal injuries.
In all circumstances the operation of the chain saw is a
one-man job. It is difcult 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 us-
ing 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 nger.
Before attempting to fell a tree, cut some small logs or limbs.
Become thoroughly familiar with the controls and the re-
sponses 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 cutting 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
cutting will actually be more difcult.
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.
WARNING
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!
Kickback
Cutting instRuCtions
GENERAL

15
WARNING
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 rst decide where that is!
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
to avoid the trunk kicking back over the stump.
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 as shown. The
position of this notch is important since the tree will try to
fall “into” the notch. The felling cut is made on the side op-
posite the notch and at a level about 2” above the bottom
of the notch. Do not try to cut through to the notch with the
felling cut. The remaining wood between the notch cut and
felling cut (about 2”) will act as a hinge when the tree falls,
guiding it in the desired direction. 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 rst cut, very carefully so as not to cause kickback.
The nal cut is made by drawing the saw forward in the
cut to reach the hinge.
Limbing a fallen tree is much the same as bucking. Never
stand on the tree that you are limbing. When limbing, cau-
tion is the word. Be careful of the tip touching other limbs.
Always use both hands.
2”
45°
2”
FELLING A TREE
DIRECTION
OF FALL
Direction of fall
Hinge
Felling cut
First cut
Notch
Second cut
One-third tree
diameter
LIMBING

16
BUCKING
Uphill position
FINISH CUT
FIRST CUT
Board or at stones
KICKBACK
• Improper thrust cutting.
• When the bar nose hits another tree, etc.
Don’t cut with the saw overhead or the bar in a vertical po-
sition. If the saw should kick back you may not have good
enough control to prevent possible injury.
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 at 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 ying debris.
To cut the trunk, use the bucking and two-cut sequence
shown. The rst cut should be no deeper than one-third the
trunk diameter.
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.
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.

17
maintenanCe anD CaRe
WARNING
Moving parts can amputate ngers 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 unit is designed to provide many hours of trouble free service. Regular scheduled maintenance will help
your unitr 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 see your Echo dealer
for repairs.
skill levels
Level 1= Easy to do. Common tools may be required.
Level 2 = Moderate difculty. Some specialized tools may be required.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier.
maintenanCe inteRvals
COMPONENT/
SYSTEM
MAINTENANCE
PROCEDURE
REQ'D
SKILL
LEVEL
DAILY OR
BEFORE
USE
EVERY
REFUEL
3 MONTHS
OR 90
HOURS
YEARLY 600
HOURS
Air Filter Inspect/Clean 1I / C * R *
Automatic Oiler Inspect/Adjust 1I
Oil Filter Inspect/Replace 1I I/C *
Fuel System Inspect/Replace 1I (1) * I (1) *
Fuel Filter Inspect/Replace 1I * I / R *
Fuel Cap Gasket Replace 1I * R
Guide Bar & Sprocket
Nose Inspect/Clean/Lubricate 1I / C * I
Saw Chain Inspect/Sharpen/Replace/
Tensioning 2I *
Sprocket Inspect/Replace 2I *
Spark Plug Inspect/Clean 1I / C / R *
Cooling System Inspect/Clean 2I / C
Muffler Spark Arrestor Inspect/Clean/Replace 2I / C / R *
Cylinder Exhaust Port Inspect/Clean/Decarbon 2I / C
Recoil Starter Rope Inspect/Clean 1I / C *
Screws/Nuts/Bolts Inspect/Tighten/Replace 1I *
(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.
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:

18
A
B
C
D
E
F
aiR filteR
1. Close choke (A) (Cold Start Position [ ). This prevents
dirt from entering the carburetor throat when the air lter
is removed. Brush accumulated dirt from air cleaner area.
2. Remove air lter cover (B). Brush dirt from inside cover.
3. Remove air lter (C) and lightly brush debris from lter.
Replace lter if it is damaged, fuel soaked, very dirty, or
the rubber sealing edges are deformed.
4. If lter can be reused, be certain it:
• Fits tightly in the air lter cavity.
• Is installed with the original side out.
5. Install air lter cover.
automatiC oileR
• The discharge volume of the automatic oiler is adjusted to
3 to 4 cc/min. (@ 7000 rpm) prior to shipment from the
factory.
• Always check oil discharge when in use.
• Turn adjusting screw (D) counter-clockwise to increase oil
volume, clockwise to decrease oil volume.
oil stRaineR
• Check periodically.
- Do not allow dust to enter into oil tank.
- Clogged oil strainer will affect the normal
lubricating system.
- Pick it up through oil port.
- If the strainer (E) is dirty, wash it in gasoline.
- When the inside of the tank gets dirty, rinsing the tank
out with gasoline will clean it.
fuel stRaineR
• Check periodically.
- Do not allow dust to enter fuel tank.
- Clogged strainer will cause difculty in starting engine
or abnormalities in engine performance.
- Pick up the fuel strainer (F) through fuel inlet port with
a piece of steel wire, or the like.
- When the strainer is dirty, wash it in suitable
cleaning uid.
- When the inside of the fuel tank is dirty, rinsing the tank
out with suitable cleaning uid will clean it.
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 supply hose between the carburetor
and fuel tank. When servicing model year 2012 and later
equipment, only fuel supply hoses certied by EPA can
be used to replace the original equipment supply hose.
Fines up to $37,500 may be enforced for using an un-
certied replacement part.

19
SPROCKET
• A damaged sprocket (C) will cause premature damage
or wear of saw chain.
• Clean sprocket, clutch and bar mount area before instal-
lation of bar.
• Check sprocket when you install new chain. When outer
diameter of sprocket is worn 0.5mm (.020”) or more,
replace it.
IMPORTANT
Some tree sap and resins are corrosive. Thoroughly wash
the guide bar and sprocket areas after each use, then coat
metal parts with light oil.
• Check periodically
• Gap = 0.65mm (.026 in.)
• Replace if either electrode is worn, or if the insulator is
fouled by oil or other deposits.
• Torque = 150 – 170 kgf • cm (130 – 150 in • lbf)
IMPORTANT
Do not over-torque
spaRk plug
G
H
J
guiDe baR anD oil holes
• Clean after each use
- Clean the grooves (G) of the guide bar with a small
screwdriver.
- Clean oil holes (H) with a wire.
• Reverse guide bar periodically.
Worn : 0.5 mm
C

20
muffleR spaRk aRRestoR
IMPORTANT
Carbon deposits in mufer will cause a drop in engine
output and overheating. Spark arrestor screen must be
checked periodically.
1. Remove mufer cover.
2. Remove spark arrestor screen cover, gaskets, and
screen from mufer body.
3. Clean carbon deposits from mufer components.
NOTE
When cleaning carbon deposits, be careful not to dam-
age the catalytic element inside mufer.
4. Replace screen if it is cracked, plugged, or has holes
burned through.
5. Assemble components in reverse order.
Cooling system Cleaning
• Remove spark plug lead.
• Remove two (2) mufer cover screws and mufer cover.
• Remove four (4) recoil starter housing screws and starter
housing.
• Use a stiff bristle cleaning brush (do not use a metal
brush) to remove dirt from cylinder ns in mufer and
ignition coil areas.