x7722271404 / x772000164
CS-352
CHAIN SAW
Instruction Manual
Burn Hazard
The muffler or catalytic muffler and surrounding cover may
become extremely hot.
Always keep clear of exhaust and muffler area, otherwise
serious personal injury may occur.
The engine exhaust from this product contains chemicals known to the
State of California to cause cancer, birth defects or other reproductive
harm.
Users of this equipment risk injury to themselves and others if
the unit is used improperly and/or safety precautions are not
followed. ECHO provides an operator’s manual and a safety
manual. Both must be read and understood for proper and safe
operation. Failure to do so could result in serious injury.
Note: This product complies with CAN ICES-2/NMB-2
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.
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TABLE OF CONTENTS
CS-352
TABLE OF CONTENTS
Table of Contents .............................................................................................. 2
Packing List ....................................................................................................... 4
Safety ................................................................................................................ 5
Rules For Safe Operation .......................................................................... 5
Correct Use Of Chain Brake ...................................................................... 7
Personal Condition and Safety Equipment .............................................. 10
International Symbols .............................................................................. 13
Manual Safety Symbols and Important Information ................................. 14
Emission Control (Exhaust & Evaporative) .................................................... 15
CARB And EPA Emissions Control Information....................................... 15
Description ...................................................................................................... 17
Preparation For Use................................................................................. 19
Operation ........................................................................................................ 23
Fuel .......................................................................................................... 23
Chain Lubricant........................................................................................ 25
Winter Operation...................................................................................... 26
Starting Cold Engine................................................................................ 26
Starting Warm Engine.............................................................................. 28
Running ................................................................................................... 29
Stopping................................................................................................... 29
Checking Chain Tension .......................................................................... 30
Chain Lubrication Test ............................................................................. 30
Cutting Instructions .................................................................................. 30
Chain And Guide Bar Combination.......................................................... 35
Guide Bar................................................................................................. 35
Saw Chain................................................................................................ 36
Maintenance ................................................................................................... 36
Skill Levels ............................................................................................... 36
Maintenance Intervals.............................................................................. 37
Carburetor Adjustment Air Filter .............................................................. 39
Spark Plug ............................................................................................... 40
Check Fuel System.................................................................................. 40
Fuel Filter ................................................................................................. 40
Oil Filter ................................................................................................... 41
Guide Bar................................................................................................. 41
Sprocket................................................................................................... 41
Cooling System Cleaning......................................................................... 42
Spark Arrestor Muffler.............................................................................. 42
Spark Arrestor Screen ............................................................................. 42
Exhaust Port Cleaning ............................................................................. 43
Setting The Saw Chain ............................................................................ 44
Troubleshooting............................................................................................... 47
Storage............................................................................................................ 49
Storage After Use .................................................................................... 49
Technical Data................................................................................................. 50
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TABLE OF CONTENTS
Product Registration ........................................................................................ 52
Servicing Information....................................................................................... 58
Parts/Serial Number................................................................................. 58
Service ..................................................................................................... 58
Echo Consumer Product Support ............................................................ 58
Product Registration................................................................................. 58
Additional or Replacement Manuals......................................................... 59
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PACKING LIST
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PACKING LIST
The ECHO product you purchased has been factory pre-assembled for your
convenience. Due to packaging restrictions, some 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.
____ 1 - Power Head
____ 1 - Instruction Manual
____ 1 - Safety Manual
____ 1 - Warranty Statement
____ 1 - Echo Power Blend X™
2-Stroke Oil Sample
____ 1 - Guide bar
____ 1 - Saw chain
____ 1 - Tip Guard Assembly
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SAFETY
SAFETY
Rules For Safe Operation
1.
Fatigue causes carelessness. Be more cautious before
rest periods and before the end of your shift.
2.
Personal protective clothing required by your safety
organizations, government regulations, or your employer
should be used; otherwise, snug fitting clothing,
protective eyewear, safety footwear and hand, leg and
hearing protection should be worn.
Note: Personal protective
clothing should meet the
requirements of
applicable Standards.
3.
Before fueling, servicing or
transporting your chain saw switch
off the engine. To help prevent fire,
restart your chain saw at least 3 m
from the fueling area.
4.
When using a chain saw a fire
extinguisher should be available.
5.
When felling, keep at least 2 tree
lengths between yourself and your
fellow workers.
6.
Plan your work; assure yourself of
an obstacle-free work area and, in
the case of felling, have at least
one escape path from the falling
tree prepared in advance.
Rotational kickback
Rotational kickback
Chain moving downward at impact
7.
Follow instructions in your operator’s manual for starting the chain saw and
control the chain saw with a firm grip on both handles when it is in
operation. Keep handles dry, clean and free of oil. A chain saw should
never be carried with the engine running.
8.
When transporting your chain saw,
use the appropriate transportation
covers that should be available for
the guide bar and saw chain.
9.
Kickback Danger Zone
Never operate a chain saw that is
damaged, improperly adjusted, or
is not completely and securely
assembled. Be sure that the saw
chain stops moving when the
throttle control trigger is released.
Never adjust the guide bar or saw chain when the engine operating.
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SAFETY
10. Beware of carbon monoxide
poisoning. Operate the chain saw
in well-ventilated areas only.
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Linear kickback
Pinch
11. Do not attempt a pruning or liming
operation in a standing tree unless
specifically trained to do so.
Kickback
12. Guard against kickback. Kickback
is the upward motion of the guide
bar, which occurs when the saw
chain, at the nose of the guide bar, contact an object. Kickback can lead to
dangerous loss of the chain saw.
TO AVOID KICKBACK:
a.
Contact of the guide bar tip with any object should be avoided.
b.
Tip contact may cause the guide bar to move suddenly upward and
backward which may cause serious injury.
c.
Always use two hands when operating the chain saw.
d.
Use a firm grip, thumbs and fingers encircling the handles.
e.
Don’t overreach.
f.
Avoid cutting above shoulder height.
g.
Follow the manufacture’s instructions for sharpening and maintenance
of the saw chain.
13. When boring with the chain saw, the initial cut should be introduced with
the lower part of the nose (tip) until the hole is sufficiently large so as to
introduce the entire nose (tip) of the guide bar. This technique should
reduce the danger of kickback.
14. A chain saw is intended for two-handed use. Serious injury to the operator,
helpers and/or bystanders may result from one-handed operation.
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a.
Allow your chain saw to cool before refueling, and do not smoke
while refueling.
b.
Do not allow other persons or animals close to running chain saw
or close to where a tree is being felled.
c.
Use extreme caution when cutting small size brush and saplings
because slender material may catch the saw chain and be
whipped toward you.
d.
When cutting a limb that is under tension be alert for spring-back.
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SAFETY
Correct Use Of Chain Brake
CHAIN BRAKE OPERATION
Locked
• Set the lever in the unlocked position
before starting to cut.
• If the brake is tripped by kickback
reaction, the chain will stop
immediately. Release the throttle to
avoid possible damage to the engine or
clutch.
• Do not attempt to operate the engine with the brake locked.
TESTING THE BRAKE
Unlocked
• Start the engine on a solid level surface
and run at a fast idle until warm.
• Hold the saw firmly by the handles and
accelerate the engine to a fast idle.
• Slowly operate the chain brake lever
while holding the saw firmly on the
ground. When the brake lever trips, the
chain should stop. Immediately release the throttle trigger.
Do not allow the saw to tip forward in order to avoid damage to the chain.
If the chain does not stop immediately, return the saw to your
authorized dealer for repair.
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 RPM's while the chain brake is locked.
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 offices, your employer or your local dealer to ensure that your chain
saw conforms to the required safety standard.
This chain brake has been designed and tested to comply with international
safety standards as follows.
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SAFETY
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Canada: CSA Standard Z62.1, Z62.3
USA: ANSI Standard B175.1 Safety Requirement for chain saws
CSA Z62.1, .3 stipulates that the brake shall stop the chain 0.12
seconds at an engine speed of 13,500 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 CSA Z62.1, .3.
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:
1.
Stop the engine.
2.
Hold the saw with the guide bar
approximately 55 cm (22 in.)
above a wooden surface. Right
hand should hold the rear handle,
and left hand should hold the front
handle.
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.
55 cm
(22 in.)
When checking the operation of the automatic chain brake, use a soft
surface substance like wood to absorb the impact so the chain is not
damaged.
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SAFETY
Chain saws shall be used in accordance with the operating
instructions and safety precautions listed in the operator's
manual(s). It shall be the responsibility of the owner to see that
such instructions and precautions are given to every operator who
uses the saw.
◆
◆
◆
◆
◆
During operation, the muffler or catalytic muffler 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 muffler.
Always keep exhaust area clear of flammable debris during
transportation or when storing, otherwise serious property
damage or personal injury may result.
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.
Using improper replacement components or removing safety
devices may result in serious or fatal injury.
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.
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SAFETY
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Personal Condition and Safety Equipment
Users of this product risk injury to themselves and others if the unit
is used improperly and/or safety precautions are not followed.
Proper clothing and safety gear must be worn when operating unit.
Physical Condition
Your judgment and physical dexterity may not be good:
• If you are tired or sick.
• If you are taking medication.
• If you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
◆
◆
Eye protection that meets ANSI Z87.1 or CE requirements
must be worn whenever you operate the unit.
For additional safety, a full-face shield may be worn over
safety glasses or goggles to provide protection from sharp
branches or flying debris.
Hand Protection
Wear sturdy, no-slip, rubber work gloves to improve your grip on the handles.
Gloves also provide protection against cuts and scratches, cold environments,
and reduce the transmission of machine vibration to your hands.
Hearing/Ear Protection
ECHO recommends wearing hearing protection whenever unit is used.
Breathing Protection
Operators who are sensitive to dust or other common airborne allergens may
need to wear a dust mask to prevent inhaling these materials while operating
unit. Dust masks can provide protection against dust, plant debris, and other
plant matter such as pollen. Make sure the mask does not impair your vision,
and replace the mask as needed to prevent air restrictions.
Proper Clothing
Wear snug-fitting, durable clothing:
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SAFETY
• Pants should have long legs, shirts should have long sleeves.
• DO NOT WEAR SHORTS.
• DO NOT WEAR TIES, SCARVES, JEWELRY, or clothing with loose or
hanging items that could become entangled in moving parts or surrounding
growth.
• Keep clothing buttoned or zipped, and keep shirt tails tucked in.
Wear sturdy work shoes with nonskid rubber soles:
• DO NOT WEAR OPEN TOED SHOES.
• DO NOT OPERATE UNIT BAREFOOTED.
Keep long hair away from engine and air intake. Retain hair with cap or net.
Heavy protective clothing can increase operator fatigue, which may lead to heat
stroke. Schedule heavy work for early morning or late afternoon hours when
temperatures are cooler.
The components of this machine generate an electromagnetic field
during operation, which may interfere with some pacemakers. To
reduce the risk of serious or fatal injury, persons with pacemakers
should consult with their physician and the pacemaker
manufacturer before operating this machine. In the absence of
such information, ECHO does not recommend the use of this
machine by anyone who has a pacemaker.
Extended Operation / Extreme Conditions
Prolonged exposure to cold and/or vibration may result in injury.
Read and follow all safety and operation instructions to minimize
risk of injury. Failure to follow instructions may result in painful
wrist/hand/arm injuries.
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
sensations, 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.
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SAFETY
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• Keep your body warm, especially the head,
neck, feet, ankles, hands, and wrists.
• Maintain good blood circulation by performing
vigorous arm exercises during frequent work
breaks, and also by not smoking.
• Limit the hours of operation. Try to fill each
day with jobs where operating the unit or other
hand-held power equipment is not required.
• If you experience discomfort, redness, and
swelling of the fingers followed by whitening
and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.
Repetitive Stress Injuries (RSI)
It is believed that overusing the muscles and
tendons of the fingers, hands, arms, and
shoulders may cause soreness, swelling,
numbness, weakness, and extreme pain in
those areas. Certain repetitive hand activities
may put you at a high risk for developing a
Repetitive Stress Injury (RSI). An extreme RSI
condition is Carpal Tunnel Syndrome (CTS),
which could occur when your wrist 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 using your wrist in a bent, extended, or twisted position. Instead try to
maintain a straight wrist position. Also, when grasping, use your whole hand,
not just the thumb and index finger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which you do the repetitive movement.
• Do exercises to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doctor if you feel
tingling, numbness, or pain in the fingers, hands, wrists, or arms. The sooner
RSI/CTS is diagnosed, the more likely permanent nerve and muscle damage
can be prevented.
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SAFETY
All over head electrical conductors and communications wires can
have electricity flow with high voltages. This unit is not insulated
against electrical current. Never touch wires directly or indirectly,
otherwise serious injury or death may result.
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can
cause serious injury or death.
International Symbols
Symbol
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Description
Symbol
Description
WARNING!
Read and follow all
safety precaution in the
instruction manual.
Failure to follow
instructions could result
in serious personal
injury.
Carburetor
Adjustment - High
Speed Mixture
Wear Eye, Ear and
Head Protection
Carburetor
Adjustment - Idle
Speed
Tip contact may cause
the guide bar to move
suddenly upward and
backward, which may
cause serious injury
Carburetor
Adjustment - Low
Speed Mixture
Contact of the guide bar
tip with any object
should be avoided
Emergency Stop
Both of the operator’s
hands must be used to
operate the chain saw
Fuel and Oil Mixture
Hot Surface
Chain Oil Fill
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SAFETY
Symbol
CS-352
Description
Symbol
Description
Chain Brake Operation
Chain Oiler
Adjustment
Choke Control “COLD
START” Position
(Choke Closed)
Purge Pump
Manual Safety Symbols and Important Information
Throughout this manual and on the product itself, you will find safety alerts and
helpful, informational messages preceded by symbols or key words. The
following is an explanation of those symbols and key words and what they mean
to you.
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.
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.
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EMISSION CONTROL
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.
The enclosed message provides information necessary for the
protection of the unit.
Note: This enclosed message provides tips for use, care and
maintenance of the unit.
CIRCLE AND SLASH SYMBOL
This symbol means the specific action shown is prohibited.
Ignoring these prohibitions can result in serious or fatal injury.
EMISSION CONTROL (EXHAUST &
EVAPORATIVE)
CARB And EPA Emissions Control Information
The emission control system for the
engine is EM (engine modification)
and, if the second to last character of
the Engine Family on the Emission
Control Information label (sample
below) is “B”, “C”, “K”, or “T”, the
emission control system is EM and
TWC (3-way catalyst). The fuel tank/
fuel line emission control system is
EVAP (evaporative emissions). Evaporative emissions for California models are
only applicable to fuel tanks.
An Emission Control Label is located
on the engine. (This is an EXAMPLE
ONLY, information on label varies by
engine FAMILY).
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EMISSION CONTROL
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Product Emission Durability (Emission Compliance Period)
The 50 or 300 hour emission compliance period is the time span selected by the
manufacturer certifying the engine emissions output meets applicable
emissions regulations, provided that approved maintenance procedures are
followed as listed in the Maintenance Section of this manual.
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DESCRIPTION
DESCRIPTION
Locate the safety decal(s) on your unit. Make sure the decal(s) is legible and
that you understand and follow the instructions on it. If a decal cannot be read, a
new one can be ordered from your ECHO dealer. See PARTS ORDERING
instructions for specific information.
1
11
2
10
9
3
8
7
6
5
4
12
13
14
22
15
21
20
19
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DESCRIPTION
United States
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Canada
1.
CHAIN BRAKE LEVER/FRONT HAND GUARD - Locks and unlocks the
chain brake to stop or allow saw chain rotation. Guard between the front
handle and the saw chain helps protect the hand from injuries if the hand
slips off the handle.
2.
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, glowing particles of
carbon from leaving the muffler. Keep exhaust area clear of flammable
debris.
3.
TIP GUARD - Anti-kickback device attached to the bar nose.
4.
SAW CHAIN - Chain, serving as a cutting tool.
5.
GUIDE BAR - The part that supports and guides the saw chain.
6.
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.
7.
CHAIN TENSION ADJUSTER - Device to adjust chain tension.
8.
CHAIN BRAKE/SPROCKET GUARD - Protective cover for the chain
brake, guide bar, saw chain, clutch, and sprocket when the chain saw is in
use.
9.
REAR HAND GUARD - Extension on the lower part of the rear handle for
protecting the hand from the chain if it breaks or derails.
10. PURGE PUMP - When starting engine, push purge pump 3 or 4 times.
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DESCRIPTION
11. CHOKE CONTROL KNOB - Device for enriching the fuel/air mixture in the
carburetor to aid cold starting. Also activates fast idle throttle latch.
12. CYLINDER COVER - The cooling airflow grill. It covers the cylinder, spark
plug and silencer.
13. SPARK PLUG - Provides spark to ignite fuel mixture.
14. THROTTLE TRIGGER LOCKOUT - A safety lever which must be
depressed before the throttle trigger can be activated. Prevents
accidental operation of the throttle trigger.
15. REAR HANDLE - FOR THE RIGHT HAND - Support handle located
towards the rear of the engine housing.
16. THROTTLE TRIGGER - Device activated by the operator’s finger, for
controlling the engine speed. Also releases fast idle throttle latch when
squeezed and released immediately after starting engine.
17. IGNITION SWITCH - Device for connecting and disconnecting the ignition
system and thus allowing the engine to be started or stopped.
18. FUEL TANK CAP - For sealing the fuel tank.
19. CYLINDER COVER LATCH - Secures cylinder cover.
20. STARTER HANDLE - Pull handle slowly until starter engages then quickly
and firmly. When engine starts, return handle slowly. DO NOT let handle
snap back or damage to unit will occur.
21. FRONT HANDLE - FOR THE LEFT HAND - Support handle located at the
front of the engine housing.
22. OIL TANK CAP - For sealing the oil tank.
CHAIN SAW TERMS
1.
FAST IDLE - Throttle setting that causes engine to operate at a faster
speed for easier starting.
2.
THROTTLE LATCH - Device that sets idle speed to fast idle when choke
control is operated.
3.
CHAIN BRAKE - Stops the saw chain.
4.
DRIVE SPROCKET - Drives saw chain.
5.
CLUTCH - Turns drive sprocket when engine rpm is fast enough to provide
the power needed for cutting.
Preparation For Use
Saw chain is sharp! Always wear gloves when handling assembly,
otherwise serious personal injury may result.
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DESCRIPTION
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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.
Tip Guard to Bar Instructions
D
Tools Needed: Two 11 mm (7/16 in.) Wrenches.
For saws with tip guard P/N 2894901 and
Symmetrical or Asymmetrical Low-Kick type
(Double Guard) guide bars.
1.
Install bolt (A) in rear hole (B) of tip guard
and through front hole (C) in guide bar.
2.
IMPORTANT: Dimple (D) in tip guard must
engage recess (E) in guide bar.
3.
Securely tighten nut (F) and bolt (A).
A
B
E
C
F
Guide Bar and Saw Chain Installation/Removal
1.
Release the cylinder cover latches, and remove the
cylinder cover.
2.
Remove spark plug lead.
3.
Remove sprocket guard nuts
(A) and remove sprocket guard
(B).
4.
Remove guide bar and saw
chain if necessary.
Unlock chain brake
Note: See “Maintenance and
Care” section for guide
bar/saw chain
maintenance
procedures.
A
B
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5.
Unlock the chain brake, and
mount guide bar on studs (C)
and slide toward sprocket (E)
to make saw chain installation
easier. Install chain with
cutters on top of guide bar
facing forward.
DESCRIPTION
C
E
F
D
A
B
6.
Install the sprocket guard over
the guide bar studs. Ensure
chain tension adjuster pin (F)
fits into the guide bar adjuster
hole (D). Tighten sprocket
guard nuts finger tight.
7.
Adjust saw chain tension, as
instructed in “Adjustment,
Chain Tension”.
Adjusting Chain Tension
Always loosen sprocket guard nuts before turning the
chain tension adjuster, otherwise the sprocket guard
and tensioner will be damaged.
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DESCRIPTION
1.
Release the cylinder cover latches,
and remove the cylinder cover.
Remove spark plug lead.
2.
Unlock chain brake and loosen
sprocket guard nuts.
3.
Hold the bar nose up, and turn the
adjuster screw (A) clockwise until
chain contacts underside of the bar.
4.
Tighten nuts with the bar nose held
up.
5.
Pull the chain around the bar by
hand. Loosen the adjustment if you
feel tight spots.
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Unlock chain brake
A
Tighten guide bar nuts to 20-23 N•m (175-200 in•lbf). DO NOT overtighten nuts. Damage to saw may result.
6.
Assemble components in reverse
order.
7.
Keep chain properly tensioned at all
times.
Note: All chains require frequent
adjustments.
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OPERATION
OPERATION
Fuel
Diesel fuels and 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
diesel or 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. Diesel or alternative fuels may also cause premature
deterioration of fuel lines, gaskets, carburetors and other engine
components.
Fuel Requirements
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. ECHO brand Power Fuel™ is 93 octane, ethanol-free
fuel premixed with ECHO Red Armor® engine oil at 50:1 ratio. Use of ECHO
Power Fuel™ is recommended to extend engine life in all air-cooled 2-stroke
and 2/4-stroke hybrid engines.
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™ 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. M345-FD certified oil, such as Echo premium Power Blend X™,
will void the two-stroke engine warranty.
Echo premium Power Blend X™ Universal 2-Stroke Oil may be mixed at
50:1 ratio for application in all Echo engines sold in the past regardless
of ratio specified in those manuals.
Handling Fuel
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling, or serious personal injury may result.
◆ Use an approved fuel container.
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OPERATION
◆
◆
◆
◆
◆
◆
◆
◆
◆
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 3 m (10 ft.) from refueling location before
starting the engine.
Mixing Instructions
1.
CS-352
Fill an approved fuel container
with half of the required amount of
gasoline.
Fuel to Oil Mix – 50:1 Ratio
US
Metric
Gas
Oil
Gas
Oil
2.
Add the proper amount of 2-stroke
oil to gasoline.
Gallons
Oz.
Liter
CC.
3.
Close container and shake to mix
oil with gasoline.
1
2.6
5
100
2
5.2
10
200
5
13
25
500
4.
Add remaining gasoline, close fuel
container, and remix.
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 flames.
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.
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OPERATION
Stored two-stroke fuel may separate. ALWAYS shake fuel container
thoroughly before each use.
Chain Lubricant
Note: 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 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 high quality bar and chain oil.
• Use bar and chain oil of the following
grades:
Fuel tank cap
Oil tank cap
• SAE No. 30....in summer
• SAE No. 10....in winter or when cutting resinous trees.
• When refueling, also refill chain oil.
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.
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a
poison gas. Breathing CO can cause unconsciousness, serious
injury, or death. Exhaust can cause serious burns. ALWAYS
position unit so that exhaust is directed away from your face and
body.
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OPERATION
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Operation of this equipment may create sparks that can start
fires around dry vegetation.This unit is equipped with a spark
arrestor to prevent discharge of hot particles from the
engine. Metal cutters can also create sparks if the cutter
strikes rocks, metal, or other hard objects. Contact local fire
authorities for laws or regulations regarding fire prevention
requirements.
Winter Operation
Air cleaner cover - Use the winter plug
(A) to prevent carburetor trouble in
winter.
A
B
• Remove air cleaner cover. Remove
plug from warm weather position (B),
and install into cold weather position
(C).
C
Note: For operation at normal
temperature (5°C [41°F])
return the plug to its original position. To prevent over heating of
the engine.
Starting Cold Engine
Make sure the bar and chain are free from any
obstruction when starting the chain saw.
1.
26
Move chain brake lever fully
FORWARD to LOCK chain brake
before starting.
Chain brake
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2.
Fill the fuel tank with fuel mixture. Do
not over fill.
3.
Fill the chain oil tank with lubricant.
Do not over fill.
4.
Move ignition switch (A) UP to “RUN”
position.
5.
Push purge pump (B) 3 to 4 times or
until fuel is visible in purge pump.
6.
Pull choke control knob all the way
OUT (CLOSED [ ] choke position).
◆
◆
◆
OPERATION
A
After choke control knob is
pulled and then knob is returned
to original position, throttle
remains slightly open (fast idle
latch condition).
The chain will attempt to move
when engine is started with fast
idle throttle latch engaged.
Do not start engine before chain
brake is locked.
7.
Securely hold the chain saw and pull
starter handle several times until first
starting sound.
8.
Push choke control knob all the way IN
(OPEN
choke position).
9.
Pull starter handle to start the engine.
B
Note: Do not pull starter rope out to
the maximum possible position.
Note: Do not allow recoil handle to snap back against the casing.
◆
◆
After starting the engine, immediately squeeze and then
release throttle trigger to release fast idle throttle latch,
otherwise severe brake damage may occur.
Never use fast idle throttle latch for cutting.
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OPERATION
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Use the fast idle throttle latch
only in starting.
Note: If engine does not start after 5
pulls, repeat instructions.
Note: Do not increase engine speed
while chain brake is locked.
Severe brake damage will result.
◆
Starting Warm Engine
Make sure the bar and chain are
free from any obstruction when
starting the chain saw.
1.
Move chain brake lever fully
FORWARD to LOCK chain brake
before starting.
2.
Confirm there is fuel and chain oil in
the tanks.
3.
Move ignition switch UP to “RUN”
position.
4.
Securely hold the chain saw as
shown and pull starter handle.
5.
Choke may be used if necessary, but
after first starting sound, squeeze
throttle trigger to release choke and
return engine to idle.
Chain brake
Note: If engine does not start after 5
pulls, use cold start
procedure.
Note: Do not increase engine speed while chain brake is locked.
Severe brake damage will result.
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OPERATION
Running
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.
1.
After engine starts, allow it to return
to idle and warm up before using.
2.
Move chain brake lever fully
REARWARD to UNLOCK chain
brake.
3.
Squeeze throttle trigger (B) gradually
and increase engine speed.
4.
The chain starts running when the
engine reaches clutch engagement
speed (see technical data page).
5.
Confirm proper acceleration and
lubrication of chain and bar.
6.
Do not run the engine at high speed
unnecessarily.
7.
Be sure that saw chain stops moving
when throttle trigger is released.
Unlock Chain brake
A
B
Stopping
1.
Release throttle trigger and allow engine to idle.
2.
Move ignition switch (A) DOWN to “STOP” position.
Note: If engine does not stop, pull choke control knob out fully to stop
engine.
Return the unit to your authorized dealer to check and repair
stop switch before starting the engine again.
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OPERATION
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Checking Chain Tension
Chain tension should be checked
frequently during work and corrected as
necessary.
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.
Cutting Instructions
General
◆
This chain saw is designed for cutting wood.
Do not cut metal, plastic or any non-wood
material.
◆
Read the “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.
◆
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◆
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!
OPERATION
Kickback
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 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
difficult.
Sap from palm trees may corrode metal parts unless proper saw
maintenance is performed. Make sure to clean metal parts from palm
sap immediately after use.
• Remove sprocket cover. Clean wood chips and sawdust from cover and
engine crankcase.
• Never use metal tools for cleaning which may scratch the metal paint and
allow corrosion to develop.
• Clean sap accumulation from metal parts with cloth and warm water with
soap.
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OPERATION
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• Rinse with clean water and dry metal surfaces.
• Apply a light coating of engine or bar and chain oil metal parts after they are
cleaned.
• Install and properly tension guide bar and chain. Run engine for one minute
alternating engine speed between full throttle for 5 seconds and idle for 5
seconds to coat metal parts with additional protective chain oil.
◆
◆
"Do not run a chainsaw not under cutting load at wide open
throttle longer than 5 seconds or engine damage may occur.
"Keep chain properly tensioned during operation to prevent
the chain from jumping out of the guide bar rail slot and
damaging metal engine parts.
Felling The Tree
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!
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.
32
3 m (10 feet)
Retreat
Direction
of fall
45°
45°
Retreat
Not this way
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OPERATION
Begin the cut on the side to
Direction of fall
which the tree is to fall. Cut a
Hinge
notch about 1/3 of the way
5 cm (2 in.)
into the tree. The position of
this notch is important since
First cut
Felling cut
the tree will try to fall “into”
the notch. The felling cut is
made on the side opposite
Notch
the notch and at a level
about 5 cm (2 in.) above the
5 cm (2 in.)
Second cut
bottom of the notch. Do not
try to cut through to the
notch with the felling cut. The
remaining wood between the
One-third tree diameter
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. 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,
3
start the notching cuts from
one side and draw the saw
through to the other side of the
1
notch. Start the back cut on
one side of the tree, pivoting
the saw through to form the
2
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.
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.
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OPERATION
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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.
Uphill position
• Keep both hands on the
handles at all times.
• Support logs if possible.
Finish cut
• When cutting on a slope or
hillside, always stand
uphill.
First cut
Keep in mind that the wood is
heavy and that it will bend
Support
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.
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.
When the bar nose hits another tree, etc.
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OPERATION
Chain And Guide Bar Combination
The following combinations are recommended for model CS-352.
Guide Bar
Length mm (in.)
ECHO Part No.
Low-kickback
Saw Chain
Pitch mm (in.)
Type
Links
305 (12)
12A0CD3745
9.53 (3/8)
91PX / 91VG
45
356 (14)
14A0CD3752
9.53 (3/8)
91PX / 91VG
52
406 (16)
16A0CD3757
9.53 (3/8)
91PX / 91VG
57
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 saw chain designated as, “LOW-KICKBACK,” that meets
ANSI B175.1 or CSA Z62.1, .3 Standard when tested on the
representative sample of chain saws below 3.8 C.I.D., and Echo
guide bar specified.
Chain and guide bar gauge size must be identical. Use Bar/Chain
combinations shown in table above.
If your tip guard is damaged or lost, contact your Echo dealer for a
replacement. For the name of the Echo dealer nearest you, Call: 1-800432-ECHO (3246) or on the web at www.echo-usa.com.
Refer to your Chain Saw Safety Manual for tip guard application information.
Guide Bar
(Low-kickback)
Replacement guide bars.
The following guide bars may be considered to have equivalent kickback
energy.
• Sprocket nose guide bars of the same length and nose radius, same pitch
and having the same number of teeth.
• Hard nose guide bars of the same length and nose radius as a sprocket nose
bar.
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MAINTENANCE
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Saw Chain
(Low-kickback)
Do not use replacement saw chain unless it has been designated
as meeting ANSI B175.1 or CSA Z62.1, .3 kickback performance
requirements, when tested on the representative sample of chain
saws below 3.8 c.i.d. specified in ANSI B175.1 or CSA 62.1, .3.
Note: LOW KICKBACK SAW CHAIN meets the kickback performance
requirements of ANSI B175.1 or CSA 62.1, .3 (safety
requirements for gasoline-powered chain saws).
MAINTENANCE
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. 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 unit 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 difficulty. Some specialized tools may be required.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your
maintenance job easier.
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MAINTENANCE
Maintenance Intervals
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
Daily or Before Use
Air Filter
Inspect/Clean*
1
Automatic Oiler
Inspect/Adjust
1
Oil Filter
Inspect
1
Fuel System
Inspect (1)*
1
Guide Bar & Sprocket Nose
Inspect/Clean*
1
Saw Chain
Inspect*/Sharpen/Replace/
Tensioning
2
Sprocket
Inspect*/Replace
2
Cooling System
Inspect/Clean
2
Recoil Starter Rope
Inspect/Clean*
1
Screws/Nuts/Bolts
Inspect*/Tighten/Replace
1
Fuel System
Inspect (1)*
1
Guide Bar & Sprocket Nose
Inspect
1
Air Filter
Replace*
1
Oil Filter
Inspect/Replace*
1
Fuel Filter
Inspect*
1
Fuel Cap Gasket
Inspect*
1
Spark Plug
Inspect/Clean/Replace*
1
Muffler Spark Arrestor
Inspect/Clean/Replace*
2
Cylinder Exhaust Port
Inspect/Clean/Decarbon
2
Fuel Filter
Inspect/Replace*
1
Fuel Cap Gasket
Replace*
1
Every Refuel
3 Months
Yearly
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.
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MAINTENANCE
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* Replacement is recommended based on the finding of damage or wear during
inspection.
T
Carburetor Adjustment
L
H
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.
T
L
H
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in
before carburetor 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.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting,
emission, and durability performance up to 1,100 feet above sea level (ASL)
(96.0 kPa). To maintain proper engine operation and emission compliance
above 1,100 feet ASL the carburetor may need to be adjusted by an authorized
service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the
carburetor must be re-adjusted when operating the engine below 1,100
feet ASL, otherwise severe engine damage may result.
1.
Before adjusting carburetor clean or replace air filter and muffler “Spark
Arrestor Screen”.
2.
Make sure the bar and chain are properly adjusted.
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.
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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:
• Start engine, turn “Idle” speed adjustment screw “T” CW until the saw chain
begins to move, then turn screw out CCW until the saw chain stops moving.
Turn screw out, CCW, an additional 1/4 turn.
When carburetor adjustment is completed, the saw chain should
not move at idle, otherwise serious personal injury may result.
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.
7.
Check idle speed and reset if necessary as described in item 5. If a
tachometer is available idle speed should be set to value listed on technical
data page.
When starting, idling adjustment speed should be adjusted to
prevent the saw chain from moving. When you experience trouble
with the carburetor, contact your dealer.
Air Filter
A
1.
Check before every use.
2.
CLOSE choke (
3.
Press hand guard forward and
close choke.
4.
Release the cylinder cover
latches (C) and remove cylinder
cover (A) and air filter (B).
5.
Lightly brush dust off air filter,
or clean with compressed air,
or replace the air filter.
6.
Install air filter and cylinder cover, engage latches.
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B
C
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MAINTENANCE
CS-352
Spark Plug
• Check periodically.
• The standard spark gap is 0.65 mm
(0.026 in.).
• Fastening torque:13-17 N•m (110-150
in•lbf).
0.65 mm (0.026 in.)
1.
Remove cylinder cover and remove spark plug.
2.
Correct the spark gap if it is wider or narrower than the standard gap.
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.
• In case of fuel leakage there is a danger of fire. Stop using the machine
immediately and request your dealer to inspect or replace.
Fuel Filter
• Check periodically.
• Do not allow dust to enter fuel tank.
• A clogged filter (A) will cause difficulty
in starting engine or abnormalities in
engine performance.
1.
Pull filter out through gas port, and
inspect filter.
2.
When the filter is dirty, replace it.
3.
When the inside of the fuel tank is dirty, rinse the tank out with gasoline to
clean it.
A
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 certified
by EPA can be used to replace the original equipment supply
hose. Fines up to $37,500 may be enforced for using an uncertified replacement part.
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MAINTENANCE
Oil Filter
• Check periodically.
• Do not allow dust to enter into oil tank.
• A clogged oil filter (B) will affect the
normal lubricating system.
1.
Pull filter out through gas port, and
inspect filter.
2.
If the filter is dirty, wash it in gasoline or replace it.
3.
When the inside of the tank gets dirty, rinse the tank out with gasoline to
clean it.
B
Guide Bar
1.
Clean before using.
2.
Clean the groove (A) of the guide
bar with a small screwdriver.
3.
Clean oil holes (B) with a wire.
4.
Invert guide bar periodically.
5.
Clean the bar mount area before
installing of the bar.
Sprocket
• A damaged sprocket will cause
premature damage or wear of saw
chain.
A
C
B
Worn: 0.5 mm (0.020 in.)
• When the sprocket has worn 0.5
mm (0.020 in.) or more, replace it.
• Check sprocket when you install
new chain. Replace it if worn.
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.
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MAINTENANCE
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Cooling System Cleaning
• Check periodically.
• Clogged fins will result in poor
engine cooling.
1.
Remove cylinder cover and
starter.
2.
Use compressed air or wooden
tool to remove dirt and dust from
between fins to let cooling air
pass easily.
Cylinder fins
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 grasscovered 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
Regulation SAE J335.
Check with your local or state authorities for specific regulations in your area.
Failure to follow these requirements is a violation of the law.
Spark Arrestor Screen
Carbon deposits in muffler will
cause drop in engine output and
overheating. Spark arrestor screen
must be checked periodically.
1.
Remove air cleaner cover and
remove spark plug lead.
2.
Remove spark arrestor cover (C)
and screen (B) from muffler (A)
body.
3.
Clean carbon deposits from muffler components.
42
A
B
C
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4.
Replace screen if it is cracked, or has holes burned through.
5.
Assemble components in reverse order.
Note: When cleaning carbon deposit, be careful not to damage the
catalytic element inside muffler.
Exhaust Port Cleaning
Level 2.
Parts Required:
As needed: Muffler gasket
1.
Remove cylinder cover and remove
spark plug lead.
2.
Place piston at top dead center.
3.
Remove muffler. Check parts for
wear or damage, and replace if
necessary.
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.
4.
Use a wood or plastic scraping tool
to clean deposits from cylinder
exhaust port.
5.
Install muffler. Tighten muffler mounting bolts (or nuts) to 7 - 9 N•m (60-80
in•lbf).
6.
Install cylinder cover and attach spark plug lead.
7.
Start engine, and allow unit to warm up at idle for several minutes.
8.
Stop engine, and re-tighten mounting bolts (or nuts) to 7 - 9 N•m (60-80
in•lbf).
9.
Install guide bar and chain. Adjust chain tension.
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10. Start engine and check for exhaust leaks between muffler and cylinder
head. Stop engine if leak is found and correct problem before operating
chain saw.
Setting The Saw Chain
Drive link
Preset tie strap
Left hand cutter
Top plate
Side plate
Tie strap
Guard link
Depth
gauge
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.
• Drive link serves to remove sawdust
from the groove of the guide bar. Keep
the lower edge of the drive link sharp
where indicated.
Sharpen lower edge
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Setting Saw Chain
• For setting saw chain, round file (4.0
mm [5/32 in.] diam.) and flat file are
used.
• Push file as shown.
30°
Keep this angle
• To keep correct position and correct
angle, use a file holder.
• Hold the file horizontally.
90°
• Place the depth gauge tool firmly on
guide bar so that depth gauge protrudes.
Then file top of depth gauge with the flat
file until flat with top of the depth gauge
tool.
1/5
• One fifth of the file diameter remains
above cutter edge.
• Be sure to round off the front edge of the
depth gauge.
Depth gauge tool
• Properly filed cutters are shown in
illustration.
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• 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, move the chain
slowly to wash away the
filings before using again.
55°
30°
Top plate filing angle
Side plate angle
• If the chain saw is operated
with filings clogged in the groove, the saw chain and the guide bar will be
damaged prematurely.
• If the saw chain becomes soiled with
resin, for instance, clean it with
kerosene and soak in it oil.
0.64 mm (0.025 in.)
Parallel
Depth gauge
To sharpen other chains, follow chain manufacturer’s instructions.
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TROUBLESHOOTING
TROUBLESHOOTING
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem
Check
Fuel at
carburetor
Engine
cranks starts
hard/
doesn’t
start
Cause
No fuel at
carburetor
Fuel strainer
clogged - Fuel
line clogged Carburetor
No fuel at
cylinder
Carburetor
Air filter dirty
Normal wear
Remedy
Clean or replace See your Echo
dealer
See your Echo
dealer
OPEN choke Fuel at
Clean/replace air
cylinder
Muffler wet with Fuel Mixture too
filter - Adjust
fuel
rich
carburetor - See
your Echo dealer
Stop switch OFF
Turn switch to ON
Spark at end
- Electrical
- See your Echo
No spark
problem of plug wire
dealer
Interlock switch
Spark gap
incorrect Adjust to 0.65mm
Spark at
Covered with
(0.026 in.) - Clean
No spark
plug
carbon - Fouled
or replace plug
with fuel - Plug
defective
Air filter
Fuel filter
Fuel vent
Engine
runs, but Spark Plug
dies or
does not Carburetor
accelerate
properly
Cooling
System
Engine
does not
crank
Status
Spark
Arrestor
Screen
Spark arrestor
Normal wear
screen plugged
N/A
N/A
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Clean or replace
Contaminants/
Fuel filter dirty
Replace
residues in fuel
Fuel vent
Contaminants/
Clean or replace
plugged
residues in fuel
Clean and adjust
Plug dirty/worn Normal wear
or replace
Improper
Vibration
Adjust
adjustment
Extended
Cooling system operation in
Clean
dirty/plugged
dirty/dusty
locations
Internal engine
problem
Replace
See your Echo
dealer
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TROUBLESHOOTING
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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.
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STORAGE
STORAGE
Storage After Use
• Inspect and adjust every part of the chain saw.
• Completely clean every part and repair if necessary.
• Apply thin coating of oil on metal parts to prevent rust.
• Remove chain and guide bar.
• Drain fuel tank completely. Press purge bulb 6-7 times to remove remaining
fuel from carburetor then drain the tank again. Close choke, start and run the
engine until it stops due to lack of fuel.
• Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.) of
fresh, clean, two-stroke engine oil into the cylinder through the spark plug
hole.
• Store in a dry area, free from dust.
Do not store in an enclosure where fuel fumes may accumulate or
reach an open flame or spark.
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.echo-usa.com.
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TECHNICAL DATA
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TECHNICAL DATA
Model
CS-352
Length
396 mm (15.6 in.)
Width
232 mm (9.1 in.)
Height
273 mm (10.7 in.)
Dry weight
4.0 kg (8.8 lb.) Without chain and guide bar
Engine
Air-cooled two-stroke single cylinder
Displacement
34.0 mL (2.075 cu. in.)
Bore
38.0 mm (1.500 in.)
Stroke
30.0 mm (1.180 in.)
Compressions ratio
6.8:1
Carburetor
Diaphragm type
Spark plug
NGK BPMR8Y (Gap 0.65 mm [0.026 in.])
Fuel tank capacity
250 mL (8.5 US. fl. oz.)
Fuel
50 : 1 ratio with ECHO Power Blend X™ or
ECHO Red Armor® ISO-L-EGD (ISO/CD 13738)
and JASO 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.
Oiling system
Automatic oiler
Chain oil capacity
260 mL (8.8 US. fl. oz.)
Starter system
Automatic rewind starter
Clutch
Centrifugal type
Sprocket type
Spur type, 6-tooth, 3/8 in. pitch
Chain brake
Automatic band brake type
Idle speed
3,000 RPM
Clutch engagement
speed
4,300 RPM
Wide open throttle
speed (W.O.T.)
12,500 RPM
Chain tensioner
Side access system
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TECHNICAL DATA
Model
CS-352
Guide bar
12, 14, 16 in
Saw chain
91PX/91VG
Standard features
Front hand guard, Rear hand guard, Antivibration device, Throttle control lockout, Chain
catcher, Spark arrestor muffler, Tip guard,
(Spiked bumper; Option)
* Technical data subject to change without notice.
This spark ignition system complies with the Canadian standard ICES-002.
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PRODUCT REGISTRATION
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PRODUCT REGISTRATION
Thank you for choosing ECHO Power Equipment
Please go to http://www.echo-usa.com/Warranty/Register-Your-ECHO to
register your new product on-line. It's FAST and EASY! NOTE: your
information will never be sold or misused by ECHO, Inc. Registering your
purchase enables us to contact you in the unlikely event of a service update or
product recall, and verifies your ownership for warranty consideration.
If you do not have access to the Internet, you can complete the form below and
mail to:
ECHO Inc., Product Registration, PO Box 1139, Lake Zurich IL 60047.
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Notes
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Notes
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SERVICING INFORMATION
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SERVICING INFORMATION
Parts/Serial Number
Genuine ECHO Parts and ECHO
REPOWER™ Parts and Assemblies for
your ECHO products are available only
from an Authorized ECHO Dealer.
When you do need to buy parts always
have the Model Number and Serial
Number of the unit with you. You can
find these numbers on the engine
housing. For future reference, write
them in the space provided below.
Model No. _________________
SN. ___________________
Service
Service of this product during the warranty period must be performed by an
Authorized ECHO Service Dealer. For the name and address of the Authorized
ECHO Service Dealer nearest you, ask your retailer or call: 1-800-432-ECHO
(3246). Dealer information is also available on our Web Site. When presenting
your unit for Warranty service/repairs, proof of purchase is required.
Echo Consumer Product Support
If you require assistance or have questions concerning the application,
operation or maintenance of this product you may call the ECHO Consumer
Product Support Department at 1-800-673-1558 from 8:00 am to 5:00 pm
(Central Standard Time) Monday through Friday. Before calling, please know
the model and serial number of your unit.
Product Registration
To ensure trouble free warranty coverage it is important that you register your
ECHO equipment on-line at www.echo-usa.com or by filling out the product
registration sheet included in this manual. Registering your product confirms
your warranty coverage and provides a direct link between you and ECHO if we
find it necessary to contact you.
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SERVICING INFORMATION
Additional or Replacement Manuals
Replacement Operator, Safety Manuals, and Parts
Catalogs are available from your ECHO dealer or at
www.echo-usa.com or by contacting ECHO Inc., 400
Oakwood Road, Lake Zurich, IL 60047 (800-673-1558).
Always check the ECHO Web Site for updated information.
Safety Videos are available from your Echo dealer. A $5.00
shipping charge will be required for each video.
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C19813001001/C19813999999
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com