Echo PB-610 User manual

Power Blower
Operator'sManual
MODEL PB-610
WARNING DANGER
Readrulesforsafeoperationandallinstructionscarefully. ECHOprovidesthis
Operator'sManualwhichmustbereadandunderstoodforproperandsafeoperation.
X753002790
12/06
X7531122000

2
TABLE OF CONTENTS
Introduction .................................................................. 2
- The Operator's Manual .......................................... 2
Safety ............................................................................ 3
- Manual Safety Symbols and Important Information3
- InternationalSymbols ............................................ 3
- Personal Condition and Safety Equipment ............ 3
- Equipment .............................................................. 6
EmissionControl........................................................... 6
Description ................................................................... 7
Contents ....................................................................... 8
Assembly ...................................................................... 9
- InstallBlowerPipes/Stick Handle ........................ 9
Operation .....................................................................10
- Fuel .......................................................................10
- StartingColdEngine .............................................11
- StartingWarmEngine ...........................................12
- Stopping Engine ...................................................13
- OperatingBlower ..................................................13
Maintenance ............................................................ 14
- SkillLevels ........................................................ 14
- Maintenance Intervals ...................................... 14
- AirFilter ............................................................ 15
- FuelFilter .......................................................... 16
- SparkPlug ......................................................... 16
- CoolingSystem................................................. 17
- ExhaustSystem................................................. 18
- Carburetor Adjustment ..................................... 19
Troubleshooting ...................................................... 21
Storage..................................................................... 22
Specifications........................................................... 23
ServicingInformation............................................... 24
- Parts/Serialnumber ........................................... 24
- Service .............................................................. 24
- ECHOConsumer ProductSupport.................... 24
- Warranty Registration ...................................... 24
- Additional or Replacement Manuals ................ 24
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 equip-
ment.
Copyright©2006ByEcho,Incorporated
All Rights Reserved.
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job
dependability. Read and understand this manual. You will find it easy to use and full of helpful operating tips and
SAFETYmessages.
THE OPERATOR’SMANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. It contains specifications and information for
operation, starting, stopping, maintenance, storage, and assembly
specific to this product.

3
POWER BLOWER
OPERATOR'SMANUAL
IMPORTANT
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.
SAFETY
MANUAL SAFETY SYMBOLS AND IMPORTANT INFORMATION
IMPORTANT
NOTE
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.
This symbol accompanied by the words WARNING and
DANGER calls attention to an act or condition that can lead
to serious personal injury to operator and bystanders.
The circle with the slash symbol means whatever is shown
within the circle is prohibited.
INTERNATIONALSYMBOLS
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Read and understand
Operator's Manual. Fuel and oil mixture
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Hot
Surface Carburetor adjustment
- Idle speed Carburetor adjustment
- High speed mixture
Wear eyes, ears and
head protection
Emergency stop
Finger Severing Carburetor adjustment
- Low speed mixture
Safety/Alert
Wear hand
protection.Use
twohanded.
DONOTsmoke
nearfuel.
DONOTallow
flamesorsparks
nearfuel.
Wear slip
resistantfoot
wear.
Ignition
ON/OFF
Primerbulb
Choke Control
"Cold Start"
Position
(ChokeClosed)
Choke Control
"Run"
Position
(ChokeOpen)
PERSONAL CONDITION AND SAFETY EQUIPMENT
WARNING DANGER
Power Blower users risk injury to themselves and others if the power blower is used improperly or safety precautions
are not followed. Proper clothing and safety gear must be worn when operating a blower.

4
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
Wear eye protection that meets ANSI Z87.1 or CE requirements whenever you operate the unit.
Hand Protection
Wear no-slip, heavy-duty work gloves to improve your grip on the blower handle. Gloves also reduce the transmission
of machine vibration to your hands.
Breathing Protection
Wear a facemask to protect against dust.
Hearing Protection
ECHO recommends wearing hearing protection whenever unit is used.
Proper Clothing
Wear snug fitting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DONOTWEARSHORTS,
• DONOTWEARTIES,SCARVES,andJEWELRY.
Wear sturdy work shoes with nonskid soles:
• DONOTWEAROPENTOEDSHOES,
• DONOTOPERATEUNITBAREFOOTED.
Keep long hair away from engine and blower intake. Retain hair with cap or net.
Hot Humid Weather
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.
Vibration and Cold
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 recom-
mended,because the minimum exposure, whichmight trigger theailment, is unknown.
• 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 physi-
cian before further exposing yourself to cold and vibration.

5
POWER BLOWER
OPERATOR'SMANUAL
Repetitive Stress Injuries
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
riskfordeveloping a Repetitive StressInjury(RSI).An extreme RSI conditionisCarpal 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 pre-
vented.
WARNING DANGER
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can
cause serious injury or death.
Read the Manuals
• Provide all users of this equipment with the Operator’s Manual
and Safety Manual for instructions on Safe Operation.
Clear the Work Area
• Spectators and fellow workers must be warned, and children and
animalspreventedfromcomingnearerthan15m(50ft.)while the
unit is in use.
• Take wind conditions into account: avoid open doors and
windows.
• Do not point blower at people or animals.
Keep a Firm Grip
• Hold the front and rear handles with both hands, with thumbs
and fingers encircling the handles.
Keep a Solid Stance
• Maintain footing and balance at all times. Do not stand on
slippery, uneven or unstable surfaces. Do not work in odd
positions or on ladders. Do not over reach.
Avoid Hot Surfaces
• Keep exhaust area clear of flammable debris. Avoid contact
duringandimmediately afteroperation.

6
EmissionControlLabel (locatedonEngine) (EXAMPLEONLY,informationonlabelvariesbyFAMILY).
PRODUCTEMISSION DURABILITY
The 300 hour emission durability 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.
EQUIPMENT CHECK
WARNING DANGER
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment
combination. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which
have not been tested and approved by ECHO. Read and comply with all safety instructions listed in this manual and
safety manual.
• Check unit for loose/missing nuts, bolts and screws. Tighten and/or replace as needed.
• Inspect fuel lines, tank and area around carburetor for fuel leaks. DO NOT operate unit if leaks are found.
• Do not use blower if any part is missing or damaged.
• Have repairs done only by an authorized ECHO Service dealer.
• Do not use any attachment, accessory or replacement part unless it is recommended in this Operator's Manual.
EMISSIONCONTROL
EPA Phase 2 / C.A.R.B. TIER III
The emission control system for the engine is EM/TWC (Engine Modification and 3-way Catalyst) and for the fuel tank
theControlSystemisEVAP(EvaporativeEmissions).Evaporative emission may be applicable to California modelsonly.
IMPORTANTENGINEINFORMATION
ENGINE FAMILY: 7EHXS.0585KA DISPLACEMENT: 21.2 CC
EMISSIONCOMPLIANCEPERIOD: 300 HRS.
THISENGINEMEETSU.S.EPAPHASE 2EMISSION
REGULATIONS FOR SMALL NONROAD ENGINES. REFER TO
OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS
ANDADJUSTMENTS.
IMPORTANTENGINEINFORMATION
ENGINEFAMILY: 7EHXS.0585KA DISPLACEMENT: 21.2 CC
EMISSIONCOMPLIANCEPERIOD: 300 HRS.
THISENGINE MEETS U.S. EPA PH2EXH AND 2007 AND
LATERCALIFORNIAEXHANDEVAP EMISSION REGULA-
TIONS FOR S.O.R.E.. REFER TO OWNER'S MANUAL FOR
MAINTENANCESPECIFICATIONSANDADJUSTMENTS.

7
POWER BLOWER
OPERATOR'SMANUAL
1
2
3
4
5
6
7
8
10 11
12
9
13
14
Hot Decal (near muffler)
General Warning Decal (located on top of blower housing)
P/N89016006361
P/N89016009461
72 Category III
dB(A)
Measured at 50 ft. (15m) per ANSI B175.2
P/NX508000150
Sound Label (located on blower housing)
DESCRIPTION
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 cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDER-
INGinstructionsforspecificinformation.

8
1. AIRCLEANER-Containsreplaceableairfilterelement.
2. SPARKPLUG-Providessparktoignitefuelmixture.
3. SPARKARRESTOR-CATALYTICMUFFLER/MUFFLER-Themufflerorcatalyticmufflercontrolsexhaust
noise and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler.
Keepexhaust areaclearofflammable debris.
4. RECOILSTARTERHANDLE-Pullrecoilhandleslowlyuntilstarterengages,thenquicklyandfirmly. When
engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
5. CHOKE - Choke is located on the side of the air cleaner. Move choke lever to "COLD START" ( ) to close choke
for cold starting. Move choke lever to "RUN" ( ) position to open choke.
6. PURGEBULB- Pumping purge bulbbefore starting engine draws freshfuel from the fuel tank,purging air from the
carburetor. Pump purge bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump purge bulb
an additional 4 or 5 times.
7. FUELTANKCAP-Coversandsealsfueltank.
8. THROTTLEPOSITIONLEVER/STOPSWITCH -Combinationstopswitchandvariablespeedthrottlelever.
When the lever is moved all the way forward the blower is at Wide Open Throttle (W.O.T.). When the lever is
moved rearward to detent, the blower is at idle. When the lever is moved rearward past the idle detent the blower will
stop.
9. BLOWERPIPES-Exclusivepositivelockingsystem.
10. SAFETYDECAL-Listsimportantsafetyprecautions.
11. THROTTLEHANDLE-Rotatesdownwardforthrottlecontrolaccess.Springloadedforflexibleoperation.
12. SHOULDER HARNESS - Used to support unit on operator's back. The straps are adjustable.
13. FLEXIBLEPIPE-Allowsforfullrangeofmovement.
14. STICKHANDLE-Providescomfortablegripfordirectingairflow.
CONTENTS
1 - PowerHead
1 - FlexPipe
1 - Pipew/swivel
1 - StraightPipe
1 - StraightPipe
1 - Operator's Manual
1 - Warranty Registration Card
1 - ECHOEmissionsandWarrantyStatement
1 - PlasticBag
2- Clamps w/screws
1-StickHandle
1-Bolt6x45
1 - Washer 6
1 - Wing nut
1 - BottleEchoPowerBlendTM Universal2-StrokeOil

9
POWER BLOWER
OPERATOR'SMANUAL
ASSEMBLY
WARNING DANGER
Never perform maintenance or assembly procedures with engine
running or serious personal injury may result.
INSTALL BLOWER PIPES / STICK HANDLE
1. Assemble clamps (A) onto both ends of flexible pipe (B).
2. Assembleswivel pipe (C) into flexiblepipe(B)andtighten clamp
(A).
3. Assemble flexible pipe (B) to elbow (D) on blower and tighten
clamp(A).
NOTE
A light lubricant may be used to ease assembly of flexible pipe to
blowerelbow.
4. Loosen wing nut (E) completely and open stick handle clamp.
5. Align notches (F) in handle clamp with tabs (G).
6. Slide stick handle onto swivel pipe (C). Stick handle should be
angled away from operator.
7. Position stick handle (H) for comfortable operation, and tighten
wingnut(E).
8. Assemble straight pipe (I) onto swivel pipe (C), until you feel
light resistance. Do not force connection. Hold swivel pipe and
turn straight pipe clockwise, engaging positive locking channels,
until connection is firm. Do not force connection.
9. Assemble straight pipe with decal (J) to straight pipe (I) as in step
8.
NOTE
Blower use will eventually loosen pipe connections. Exclusive
positive locking system allows pipes to be tightened. If loosening
occurs, remove two straight pipes and install according to instruc-
tions 8 & 9.
I
J
C
C
AA
B
B
D
E
G
F
H
G

10
OPERATION
NOTICE:Useof unmixed,improperlymixed,orfuelolder than90days,(stalefuel),may causehardstarting,poor
performance, or severe engine damage and void the product warranty. Read and follow instructions in the Storage
section of this manual.
FUEL
WARNING
Alternativefuels, such as E-20(20% ethanol), E-85(85%ethanol) or anyfuels not meeting ECHOrequirements 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.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to
15%MTBE(methyl tertiary-butyl ether). Gasoholcontaining methyl (wood) alcoholis NOTapproved.
TwoStrokeOil-Atwo-strokeengineoilmeetingISO-L-EGD(ISO/CD13738)andJ.A.S.O.FC Standardsmustbeused.
Echo brand premium Power Blend TM Universal 2-Stroke Oil meets these standards. Engine problems due to inadequate
lubricationcausedbyfailuretouseanISO-L-EGDandJ.A.S.O.FC certified oil, such as Echo premium PowerBlendTM,
will void the two-stroke engine warranty. (Emission related parts only are covered for two years, regardless of two-
stroke oil used, per the statement listed in the Emission Defect Warranty Explanation.)
IMPORTANT
EchopremiumPowerBlendTM Universal2-StrokeOilmaybemixedat50:1ratioforapplicationinallEchoengines
sold in the past regardless of ratio specified in those manuals.
Handling Fuel
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingorhandlingorseriouspersonalinjurymayresult.
• Use an approved fuel container.
• DONOTsmokenearfuel.
• DONOTallowflamesorsparksnearfuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
• NEVERrefuelaunitwhentheengineisHOTorRUNNING!
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
•DONOToverfillfueltank. Wipeupspillsimmediately.
• 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.

11
POWER BLOWER
OPERATOR'SMANUAL
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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 remaininggasoline, 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, unoccu-
pied building, away from sparks and flames.
IMPORTANT
Storedfuelages. Do not mixmorefuel
than you expect to use in thirty (30)
days, ninety (90) days when a fuel
stabilizeris added.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container
thoroughly before each use.
STARTING COLD ENGINE
• Check unit for loose nuts, bolts and screws daily.
• Recoil starter: Use short pulls - only 1/2-2/3 of rope length for
starting. Do not allow the rope to snap back in. Always hold the unit
firmly.
• Rotate throttle handle downward to a comfortable operating position.
1. Throttle Lever
Move throttle lever (A) to "SLOW" (START) position.
2. Choke
Move choke (B) to "Cold Start" ( ) position.
3. Purge Bulb
Pump purge bulb (C) until fuel is visible and flows freely in the
clear fuel tank return line. Pump bulb an additional 4 or 5 times.
A
Stop
Slow
Fast
B
C

12
D
4. Recoil Starter
Pull recoil starter handle (D) and engine should start.
5. Choke
Move choke (B) to run ( ) position and if necessary, restart
engine.
NOTE
If engine does not start after 5 pulls, repeat instructions 2-5.
NOTE
Allow engine to warm up before use.
STARTING WARM ENGINE
The starting procedure is the same as Cold Start except DO NOT close
the choke.
1. Throttle Lever
Move throttle lever (A) to "SLOW" (START) position.
2. Purge Bulb
Pump purge bulb (C) until fuel is visible and flows freely in the
clear fuel tank return line. Pump bulb an additional 4 or 5 times.
3. Recoil Starter
Pull recoil starter handle (D) and engine should start.
NOTE
If engine does not start after 5 pulls, use cold start procedures.
D
B
C
A
Stop
Slow
Fast

13
POWER BLOWER
OPERATOR'SMANUAL
NOTE
Never use a higher speed setting than necessary to perform a task.
Remember, the higher the engine speed, the louder the blower noise.
Minimize dust by using blower at lower speeds and by dampening
material with water/mist when necessary. Keep debris on your
property.
Be Smart - be a good neighbor.
STOPPING ENGINE
1. Throttle Lever
Move throttle lever (A) to "SLOW" position and allow engine to
return to idle before shutting off engine.
2. Move throttle lever (A) to "STOP" position.
WARNING DANGER
If engine does not stop when stop switch is moved to STOP
position, close choke - COLD START position - to stall engine.
Have your ECHO dealer repair stop switch before using blower
again.
A
Stop
Slow
Fast
OPERATING BLOWER
WARNING DANGER
Always wear safety glasses, hearing protection, a face filter mask
and take all safety precautions or serious personal injury may result.
Do not point the blower pipe in the direction of people or pets.
Read the Safety Section carefully.
IMPORTANT
To avoid engine damage due to over revving, do not block
blower pipe opening.
1. Use only during appropriate hours.
2. Allow the engine to warm up at a fast idle for a few minutes.
3. Set engine speed with throttle lever (A).
4. Use lower speed to blow dry grass and leaves from walks, patios
and drives.
5. Additional speed may be necessary to clean leaves from a lawn or
flowerbed.
6. Higher speed may be necessary to move gravel, dirt, snow, bottles
or cans from a driveway, street, parking lot or stadium.
A
Stop
Slow
Fast

14
MAINTENANCE
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
anECHOServiceDealerformaintenance. TohelpyoudecidewhetheryouwanttoDO-IT-YOURSELFor have the ECHO
Dealer do it, each maintenance task has been graded. If task is not listed, see your ECHO Dealer for repairs.
SKILL LEVELS
Level1= Easy to do. Most required tools come with unit.
Level2= Moderate difficulty. Some specialized tools may be required.
Level3= Experience required. Specialized tools are required. Echo recommends that the unit be returned to your
ECHOdealerforservice.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier. Just below each task
heading are listed the various part numbers required for that task. See your ECHO dealer for these parts.
MAINTENANCE INTERVALS
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15
POWER BLOWER
OPERATOR'SMANUAL
WARNING DANGER
Allow the engine and muffler to completely cool before performing
any maintenance activity.
AIR FILTER
Level1.
Tools required: 25-50mm(1-2in.)cleaningbrush
Parts required: TuneUpKitP/N90071C
NOTE
Always brush dirt and debris away from air cleaner area prior to
cleaningairfilter.
1. Brush dirt off air cleaner area. Keep dirt away from engine and air
intakegrid.
2. Remove air filtercover.Brushdirt from inside coverandaway from
edgesof air filter.
3. Checkairfiltersealfortightfit with airfiltercase.
4. Remove air filter from case. Use care to prevent dirt and debris
fromfallingintoairfiltercase.
5. Inspect filter element and seal. Replace filter if any of these
problems are present:
•Air filter seal does not fit tightly against case
•Air filter seal is distorted, worn, or damaged
•Air filter element has holes or other damage
•Airfilterelement is saturated withdirt
•Airfilterelementissoakedwithfuelmix
6. If air filter is in good condition and can be cleaned and reused,
lightlybrushdebrisfromairfilterelement,orblowfilterelement
clean using low pressure (40 psi or less) compressed air directed at
insideoffilter.
IMPORTANT
When using compressed air, always direct air stream at inside
surface of filter so dust and debris will be blown out of filter. Keep
airnozzle 6 - 8inches away fromfilter to preventdamage to filter.
7. Install air filter in case, and replace cover.
NOTICE
Actual replacement interval for air filter depends on operating
conditions. Operation in dustier applications requires more frequent
cleaning and replacement. Continued operation with a damaged or
excessively dirty filter will allow dirt and debris to enter engine, and
result in poor performance, rapid engine wear, and premature engine
failure.

16
SPARK PLUG
Level1.
Tools required: 3/4 in. Spark Plug deep socket, feeler gauge
Parts Required: REPOWERTMTuneUpKitP/N90071
IMPORTANT
UseonlyNGKBPM-8Ysparkplug(BPMR-8YinCanada)
otherwise severe engine damage may occur.
1. Remove spark plug and check for fouling, or worn and rounded
center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to
clean.Remainingsandwilldamageengine.
3. Adjust spark plug gap by bending outer electrode.
4. Tightensparkplugto150-170kg/cm(130-150in.lb.).
FUEL FILTER
Level1.
Tools required: 200-250mm(8-10in.)lengthofwirewithoneend
bent into a hook, clean rag, funnel, and an approved
fuelcontainer.
Parts required: REPOWERTMTuneUpKitP/N90071
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling.
1. Use a clean rag to remove loose dirt from around fuel cap and
emptyfueltank.
2. Use the “fuel line hook” to pull the fuel line and filter from the
tank.
3. Remove the filterfromthe line and installthe new filter.
0.65 mm
(0.026 in.)

17
POWER BLOWER
OPERATOR'SMANUAL
COOLING SYSTEMS CLEANING
Level2.
Tools required: 25 -50 mm(1 - 2 in.) Cleaning brush, cross head
screwdriver
Parts Required: None, if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder fin area. This flow of air carries
combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching the
cylinder.
• Dust and grass build up on the outside of the cylinder. This build up
insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages or cleaning of cooling fins is
considered “Normal Maintenance.” Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
1. Removeaccumulateddebrisfrom intakegrill(A)between back-
pack frame and blower housing.
Cleaning Cylinder Fins
1. Remove engine cover (five screws), pull cover away from engine.
Clean cylinder fins (B) to allow cooling air to pass freely.
A
B

18
A
D
CB
E
EXHAUST SYSTEM
Spark Arrestor Screen
Level2.
Tools required: Cross head screwdriver, soft metal brush
Parts Required: Sparkarrestor screen.Gaskets (3)
IMPORTANT
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1. Remove spark plug and engine cover (five screws).
2. Remove spark arrestor cover (A), gaskets (B, C, D) and spark
arrestorscreen(E)frommuffler.
NOTE
When cleaning carbon deposits, be careful not to damage the
catalyticelementinsidemuffler.
3. Clean carbon deposits from muffler components.
4. Replace screen if it is cracked, plugged, or has holes burned
through.
5. Assemble components in reverse order.
Cylinder Exhaust Port
Level3.
IMPORTANT
The cylinder exhaust port must be inspected and cleaned of excess
carbon every 3 months or 90 hours of operation in order to
maintainthis engine withinthe emissions durabilityperiod. ECHO
strongly recommends that you return your unit to your ECHO
dealer for this important maintenance service.

19
POWER BLOWER
OPERATOR'SMANUAL
CARBURETORADJUSTMENT
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 Adjustment
High altitude adjustment may be required for proper operation of this
engine.
IMPORTANT
For engine operation above 2,000 feet, turn the high-speed needle
lean (CW) until the engine runs between 7,000 and 8,000 RPM. Then
turn the low-speed needle lean (CW) until the engine does not
hesitate on acceleration.
For engine operation below 2,000 feet, turn the high-speed needle
rich(CCW)untiltheenginerunsbetween7,000and8,000RPM.
Then turn the low-speed needle rich (CCW) until the engine does
not hesitate on acceleration.
DONOTREMOVELIMITERCAPS!
Level2.
Tools required: Screwdriver,tachometer(EchoP/N99051130017)
Parts required: None.
NOTE
Do not adjust carburetor unless necessary. If you have difficultly,
seeyourECHOdealer.
Adjustment Screws
Idle Speed (A) Control throttle opening at idle.
Low(LO)Speed(B) Controls amount of fuel at low speed and
supplementary fuel for smooth progression from
idle to high speed.
High(HI)Speed(C) Controls amount of fuel at full throttle
Before Adjustment
Checkthat:
• Air filter is clean and properly installed.
• Spark arrestor screen and muffler are free of carbon.
• Blowerpipesare installed.
A
CB

20
Initial Adjustment
1. With engine off, turn HI speed screw (C) counterclockwise to
stop.
2. Turn LO speed screw (B) midway between stops.
3. Turn idle screw (A) until tip of screw just touches throttle plate;
then turn three (3) turns clockwise.
Final Adjustment
IMPORTANT
Limitercapsprevent exceeding emission limitsandoverrich
adjustment, but not over lean adjustment, which can cause
engine failure: Do not exceed recommended HI speed engine
R.P.M. during operation, or for long periods during adjustment.
1. Start engine, run at idle for one minute.
2. Complete warm up by running at full throttle for 5 minutes,
operating choke twice to clear air from carburetor chambers.
3. Run at idle and accelerate to check for smooth transition from idle
to high speed; if engine hesitates, turn LO speed screw (B)
counterclockwise 1/8th of a turn at a time until acceleration is
smooth.
4. Use a tachometer to adjust idle speed to specifications found on
page23.
A
CB