Page 1
Power Blower
Operator's Manual
MODEL PB-411
WARNING DANGER
Read rules for safe operation and all instructions carefully. ECHO provides this Operator's
Manual which must be read and understood for proper and safe operation.
X750-002 11 0
X750109-250 0
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2
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-jobdependability. Read and understand this manual. You will find it easy to use and full of helpful operating tips and
SAFETY messages.
WARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides this Operator's Manual which must be read
and understood for proper and safe operation.
THE OPERATOR'S MANUAL
contains specifications and information for operation, starting, stopping, maintenance, storage and assembly specific to this product.
--
TABLE OF CONTENTS
Introduction ...............................................................2
- The Operator's Manual ................................... 2
Manual Safety Symbols and Important Information .. 3
Safety ........................................................................ 3
- Decals ............................................................. 3
- International Symbols ..................................... 4
- Equipment ....................................................... 4
- Fuel ................................................................. 5
- Personal Condition and Safety Equipment ......5
- Safe Operation ................................................. 7
- Extended Operation/Extreme Conditions ......... 8
Description ................................................................ 9
- Emission Control ............................................. 9
- Contents .......................................................... 9
Specifications ........................................................... 11
Assembly ................................................................. 12
- Install Blower Pipes ....................................... 12
- Install Stick Handle ....................................... 12
Pre-Operation ........................................................... 13
- Fuel ............................................................... 13
Operation ................................................................. 15
- Starting Cold Engine ..................................... 15
- Starting Warm Engine ................................... 15
- Stopping Engine............................................ 15
- Operating Blower .......................................... 16
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.
Maintenance ............................................................ 17
- Skill Levels .................................................... 17
- Maintenance Intervals .................................. 17
- Air Filter ........................................................ 18
- Fuel Filter ...................................................... 18
- Spark Plug ..................................................... 19
- Cooling System ............................................. 19
- Exhaust System ............................................. 20
- Carburetor Adjustment ................................. 21
Troubleshooting ...................................................... 22
Storage ..................................................................... 23
Page 3
MANUAL SAFETY SYMBOLS
AND IMPORTANT INFORMATION
Throughout this manual and on the product itself, you will find safety
alerts and helpful, information messages preceded by symbols or key
words. The following is an explanation of those symbols and key
words and what they mean to you.
P
OWER BLOWER
O
PERATOR'S MANUAL
IMPORTANT
3
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.
SAFETY
DECALS
Locate these safety decals on your unit. The complete unit illustration,
found in the "DESCRIPTION" section, will help you locate them. Make
sure the decals are legible and that you understand and follow the
instructions on them. If a decal cannot be read, a new one can be
ordered from your ECHO dealer.
NOTE
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.
HOT DECAL
-WARNING-
-DANGER-
Read and follow all safety
precautions in the operator's
manual. Operators, helpers &
bystanders can be severely
injured by blown objects and
must wear specified ANSI Z87.1
eye protection. Always wear
hearing protection when
operating.
- ADVERTENCIA
- PELIGRO
Lea y obedezca todas las
precauciones de seguridad que
aparecen en el Manual del
Operador. Los operadores, los
asistentes y los espectadores
pueden recibir lesiones graves
debido a los objetos que se
soplan y tienen que usar la
protección para ojos ANSI
Z87.1. Siempre use protección
para los oídos cuando opere.
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4
INTERNATIONAL SYMBOLS
Symbol form/shape
Symbol
description/application
Read and understand
Operator's Manual.
Symbol form/shape
Symbol
description/application
Fuel and oil mixture
Symbol form/shape
Symbol
description/application
Engine choke
control.
Symbol form/shape
Symbol
description/application
Ignition
ON/OFF
Wear eyes, ears and
head protection
Hot
Surface
Safety/Alert
DO NOT allow
flames or sparks
near fuel.
Finger Severing
Wear hand
protection. Use
two handed.
Wear slip
resistant foot
wear.
DO NOT smoke
near fuel.
EQUIPMENT
Before operation a complete check of the unit must be performed:
Check unit for loose/missing nuts, bolts and screws. Tighten
and/or replace as needed.
Emergency stop
Carburetor adjustment
- Low speed mixture
Carburetor adjustment
- Idle speed
Primer bulb
Carburetor adjustment
- High speed mixture
Inspect fuel lines, tank and area around carburetor for fuel leaks. DO
NOT operate unit if leaks are found.
Spark Arrestor - Catalytic Muffler / Muffler
The muffler or catalytic muffler controls the exhaust noise and
emissions. The spark arrestor screen 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. Keep
exhaust area clear of flammable debris. Avoid contact during and
immediately after operation.
Parts
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.
ATTACHMENTS
AND
ACCESSORIES
Page 5
FUEL
WARNING DANGER
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling or serious personal injury may result.
Use an approved fuel container.
DO NOT smoke near fuel.
DO NOT allow flames or sparks near fuel.
Fuel tanks/cans may be under pressure. Always loosen fuel caps
slowly allowing pressure to equalize.
NEVER refuel a unit when the engine is HOT!
NEVER refuel a unit with the engine running.
DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks
outdoors over bare ground.
Securely tighten fuel cap after refueling.
Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
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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. Contact your ECHO dealer for ordering
information.
After Refueling;
Wipe any spilled fuel from the unit.
Move at least 3 m (10 ft.) from refueling location before starting.
After use;
DO NOT store a unit with fuel in its tank. Leaks can occur. Return
unused fuel to an approved fuel storage container.
3 m (10 ft.)
MINIMUM
PERSONAL CONDITION AND SAFETY EQUIPMENT
WARNING DANGER
Power Blower users risk injury to themselves and others if the Power Blower is used improperly and/or safety
precautions are not followed. Proper clothing and safety gear must be worn when operating a Power Blower.
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.
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6
Eye Protection --
Wear eye protection that meets ANSI Z87.1 or CE requirements
whenever you operate the blower.
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 face mask 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.
DO NOT WEAR SHORTS,
DO NOT WEAR TIES, SCARVES, JEWELRY.
Wear sturdy work shoes with nonskid soles;
DO NOT WEAR OPEN TOED SHOES,
DO NOT OPERATE UNIT BAREFOOTED.
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.
Page 7
SAFE OPERATION
Determine Operation Area --
Do not operate this product indoors or in inadequately ventilated
areas.
Review area to be cleared. Look for potential hazards such as stones
or metal objects.
Spectators and fellow workers must be warned, and children and
animals prevented from coming nearer than 15m (50 ft.) while the
blower is in use.
Take wind conditions into account: avoid open doors and windows.
Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
Do not point blower at people or animals.
Use Proper Clothing & Equipment
Before starting the unit, equip yourself and any other person
working within the 15 m (50 ft.) Safety Zone with the required
Protective Equipment and clothing.
Keep long hair away from engine and blower intake. Retain hair with
cap or net.
Start unit on ground with throttle at idle. Check that blower pipe is
not blocked by the ground or by any objects.
P
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O
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15 m (50 ft.)
7
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 perform Maintenance or Assembly procedures with engine
running.
Noise Control
Follow local noise regulations on sound levels and hours of
operations. Use only during appropriate hours.
Never use a higher speed setting then necessary to perform a task.
The higher the engine speed the louder the blower noise.
Be a good neighbor.
Avoid Hot Surfaces
During operation, the muffler or catalytic muffler and surrounding
cover may become extremely hot. Avoid contact during and immedi-
ately after operation. Always keep exhaust area clear of flammable
debris. Allow the engine and muffler to completely cool before
performing any maintenance activity.
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8
EXTENDED OPERATION / EXTREME CONDITIONS
Vibration and Cold --
It is believed that a condition called Raynauds 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.
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 blower 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 --
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 & force in 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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DESCRIPTION
EMISSION CONTROL
California Tier 2
The emission control system for these engines are
EM (Engine Modification).
An Emission Control Label is located on the engine. (This is an
EXAMPLE ONLY, information on label varies by engine FAMILY).
PRODUCT EMISSION DURABILITY
The 300 hour emission durability period is the time span selected by the manufacturer certifying the engine
emissions output meets applicable California emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual.
The Air Index Tag indicates, for purposes of
consumer awareness, how this product's
emissions compare to other products under
the standards enacted by the California Air
Resources Board.
AIR INDEX TAG
CONTENTS
1 - Power Head
1 - Blower Pipe Assembly
1 - Operator's Manual
1 - Warranty Registration Card
1 - ECHO Emissions and Warranty Statement
1 - Bottle ECHO 2-Stroke Oil Mix
Page 10
10
2
8
5
4
7
6
1
10
11
9
3
1. AIR CLEANER - Contains replaceable air filter element.
2. SPARK PLUG - Provides spark to ignite fuel mixture.
3. MUFFLER/SPARK ARRESTOR -The spark arrestor muffler controls the exhaust noise while the spark arrestor
prevents hot, glowing particles of carbon from leaving the muffler.
4. RECOIL STARTER HANDLE - Pull recoil handle slowly until starter engages, then return handle slowly. DO NOT
let handle snap back or damage to unit will occur.
5. CHOKE LEVER - Push lever DOWN to close choke (starting position) and for emergency stopping.
Lift UP to open choke (run position).
6. FUEL TANK CAP - For closing the fuel tank.
7. THROTTLE LEVER - Controls engine speed.
8. STOP SWITCH - Toggle Switch
9. SHOULDER HARNESS - Used to support unit on operator's back. The straps are adjustable.
10. BLOWER PIPES -
11. FLEXIBLE PIPE - Allows for full range of movement.
Page 11
SPECIFICATIONS
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MODEL
Length
Width
Height
Masses (dry)
Engine Type
Displacement
Bore
Stroke
Carburetor
Ignition System
Spark Plug
Exhaust System
Fuel
Fuel/Oil Ratio
PB-411
330 mm (13.0 in.) (w/o pipes)
440 mm (17.3 in.)
440 mm (17.3 in.)
9.7 kg (21.4 Ib.) (w/o pipes)
Air cooled, two-stroke, single cylnder gasoline engine
39.7 mL (2.42 cu. in.)
38.0 mm (1.50 in.)
35.0 mm (1.38 in.)
Walbro Diaphragm, model WT-410C
Flywheel Magneto, capacitor discharge ignition type
NGK BPM-8Y Gap 0.65 mm (0.026 in.)
Spark Arrestor Muffler w / Catalyst
Mixed (Gasoline and Two-stroke Oil)
50:1 ECHO High Performance, two-stroke air cooled engine oil
Gasoline
Oil
Fuel Tank Capacity
Recoil Starter System
Wide Open Throttle Speed (r/min)
Idle Speed (r/min)
Maximum Air Volume
Maximum Air Speed w/pipes (m/s)
Sound Level at 50 ft. dB(A) scale per
ANSI B175.2
89 Octane unleaded. DO NOT use fuel containing methyl alcohol.
Gasoline may contain 15% MTBE (methyl tertiary-butyl ether).
50:1 ECHO High Performance, two-stroke air cooled engine oil
1.5 L (50.7 US fl. oz.)
Automatic Recoil Starter Centrifugal Type
7000 - 7600
2200 - 3000
10.6 m3/min. (375 cu. ft./min.)
78 (175 mph)
74 dB(A)
Page 12
12
ASSEMBLY
WARNING DANGER
Never perform maintenance or assembly procedures with engine
running or serious personal injury may result.
INSTALL BLOWER PIPES
1. Assemble throttle lever bracket to the fancase using four screws.
- Set stop lead into the recess of bracket.
2. Assemble the flexible pipe thru elbow to the blower and tighten
clamp.
3. Assemble the flexible pipe and the straight pipe w/swivel and
tighten the clamp.
Stick handle
Flexible pipe
Elbow
Clamp
Pipe
4. Assemble straight section of the pipe to the other end of the pipe.
5. Assemble the curved pipe and rotate the desired angle.
6. Shoulder harness is adjustable to fit any operator.
7. Adjust the length of strap for easier operation.
INSTALL STICK HANDLE
1. Remove blower pipe from swivel tube.
2. Loosen wing nut completely and expand open stick handle clamp.
3. Align notches in handle clamp with pipe pegs. Handle should be
angled away from operator.
4. Slide handle onto swivel tube.
5. Position handle for comfortable operation and tighten wing nut.
Pipe pegs
Swivel tube
Screws
Stop lead
Stick handle
clamp
Notches
Wing nut
6. Install blower pipe to swivel tube.
Page 13
PRE-OPERATION
FUEL
Fuel Requirements
Gasoline - Use 89 Octane [ ] (mid grade or higher) gasoline known
to be good quality. Gasoline may contain 15% MTBE (methyl tertiarybutyl ether).
Gasohol containing methyl (wood) alcohol is NOT approved.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD
13738) and J.A.S.O. FC Standards, must be used. ECHO brand Premium
50:1 oil meets this standard. Engine problems due to inadequate
lubrication caused by failure to use an ISO-L-EGD and J.A.S.O. FC
certified oil, such as ECHO Premium 50:1 Two-stroke Oil, 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 California Emission Defect Warranty Explanation.)
IMPORTANT
ECHO Premium 2-stroke oil may be used at 50:1 ratio in an engine
that was ever made and sold by ECHO regardless of the ratio
specified in the older operator manuals.
R + M
2
P
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O
PERATOR'S MANUAL
Mixing -
1. Fill an approved fuel container with half of
the required amount of gasoline.
2. Add 2stroke oil to gasoline.
3. Close container and shake to mix oil with
gasoline.
4. Add remaining gasoline and remix.
5. Install fuel container cap and wipe spilled
fuel from container and surrounding area.
13
Handling Fuel
WARNING DANGER
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling or serious personal injury may result.
Use an approved fuel container.
DO NOT smoke near fuel.
DO NOT allow flames or sparks near fuel.
Fuel tanks/cans may be under pressure. Always loosen fuel
caps slowly allowing pressure to equalize.
NEVER refuel a unit when the engine is HOT!
NEVER refuel a unit with the engine running.
DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks
outdoors over bare ground.
Securely tighten fuel cap after refueling.
Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
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. Contact your ECHO dealer for ordering
information.
Page 14
14
After Refueling -
Wipe any spilled fuel from the unit.
Move at least 3 m (10 ft.) from refueling location before starting.
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,
air tight container. Store in a well ventilated, unoccupied building, away
from sparks and flames. Do not store fuel longer than 30 days.
3 m (10 ft.)
MINIMUM
IMPORTANT
Stored fuel ages. Do not mix more fuel than you expect to use in
thirty (30) days, ninety (90) days when a fuel stabilizer is added.
Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use.
SMTWTF S
1234567
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Page 15
OPERATION
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O
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15
- Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
- 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 spring loaded throttle handle downward to a comfortable
operating position.
STARTING COLD ENGINE
1. Turn switch to "RUN" position.
2. Close choke (move choke lever down) and pull recoil starter
handle until engine fires.
3. Open choke and if necessary, restart engine.
Recoil starter handle
Choke lever
Open choke
Close choke
NOTE
Allow engine to warm up before use.
ST AR TING WARM ENGINE
1. Turn switch to "RUN" position.
2. Move throttle lever to start/idle position, pull recoil starter handle
5 times and engine should start. Do not use choke.
NOTE
If engine does not start after 4 pulls, use cold start procedures.
STOPPING ENGINE
1. Move throttle lever to idle position and allow engine to run at idle
for a few minutes.
2. Move switch to "STOP" position.
WARNING DANGER
If engine does not stop, move choke lever to closed position to stall
engine. Check and repair stop switch before starting engine again or
serious personal injury may result.
STOP
RUN
High speed
START
Idling
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16
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. Make sure bevel at end of pipe faces downward.
3. Allow the engine to warm up at a fast idle for a few minutes.
4. Set engine speed.
5. Use lower speed to blow dry leaves from a lawn or flower bed.
6. Additional speed may be necessary to clean grass and leaves from
walks, patios and drives.
7. Higher speed may be necessary to move gravel, dirt, snow, bottles
or cans from a driveway, street, parking lot or stadium.
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 when necessary.
Keep debris on your property.
Be Smart - be a good neighbor.
Page 17
POWER BLOWER
OPERATOR'S MANUAL
17
MAINTENANCE
Your ECHO blower is designed to provide many hours of trouble free service. Regular scheduled maintenance will help
your blower 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 task is not listed, see your ECHO Dealer for repairs.
SKILL LEVEL
Level 1 = Easy to do. Most required tools come with unit.
Level 2 = Moderate difficulty. Some specialized tools may be required.
Level 3 = Experience required. Specialized tools are required. Echo recommends the unit be returned to your Echo
Dealer for servicing.
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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Page 18
18
AIR FILTER
Level 1.
NOTE
Clean daily.
1. Close choke (Cold Start Position). This prevents dirt from
entering the carburetor throat when the air filter is removed.
Brush accumulated dirt from the air cleaner area.
Air cleaner cover
Element
2. To take out a air filter, loosen both clamps of air cleaner and
remove filter cover as shown.
3. Clean and inspect the element for damage. If element is fuel
soaked and very dirty, replace it.
4. If element can be cleaned and reused, be certain it:
still fits the cavity in the air cleaner cover.
is installed with the original side out.
FUEL FILTER
Level 1.
WARNING DANGER
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling.
1. Use a clean rag to remove loose dirt from around fuel cap and
empty fuel tank.
Clamp
2. Use the fuel line hook to pull the fuel line and filter from the
tank.
3. Remove the filter from the line and install the new filter.
Fuel filter
Page 19
WARNING DANGER
Muffler and catalytic mufflers operate at extremely high temperatures. Muffler area must be kept clean. Do not perform maintenance
on the engine or muffler until engine and muffler are completely
cool, otherwise serious personal injury may occur.
SP ARK PLUG
Level 2.
1. Remove spark plug and check for fouling, worn and rounded
center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to
clean. Remaining sand will damage engine.
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O
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19
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 14.2 - 15.2 Nm (125 - 135 in. lb.).
COOLING SYSTEMS
Level 2.
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.
0.65 mm
(0.026 in.)
INTAKE
GRILL
Cleaning Grill
Brush accumulated debris from intake grill.
Page 20
20
Cleaning Cylinder Fins
Check periodically.
- Clogged fins result in poor engine cooling.
- Clean the passage of air between the cylinder fins to let cooling air
pass easily.
EXHAUST SYSTEM
Spark Arrestor Screen
Level 2.
IMPORTANT
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
Cylinder fins
1. Remove spark arrestor cover, gaskets and spark arrestor screen
from muffler. Replace screen if plugged with carbon deposits.
NOTE
When cleaning carbon deposit, be careful not to damage the
catalytic body.
2. Install spark arrestor screen, gaskets, and cover.
3. Tighten all screws securely.
Cylinder Exhaust Port
Level 3.
IMPORTANT
The cylinder exhaust port must be inspected and cleaned of excess
carbon every 3 months or 90 hours of operation in order to maintain
this engine within the emissions durability period. ECHO strongly
recommends that you return your unit to your ECHO dealer for this
important maintenance service.
In the event that the engine should lose power and overheat, the
muffler should be removed and checked for excessive deposits.
Carbon build up in the exhaust port should be removed with a piece
of wood, ensuring that particles of carbon are not allowed to enter the
cylinder.
Remove all carbon deposits from the muffler flange area and wash the
complete unit in a suitable solvent.
Spark arrestor screen
Gaskets
Spark arrestor cover
Page 21
CARBURETOR ADJUSTMENT
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 breakin period your engine performance will increase and exhaust emissions
will stabilize. Idle speed can be adjusted as required.
High Altitude Adjustment
High altitude adjustment is not required for proper operation of this
engine.
Level 2.
NOTE
Every unit is run at the factory and the carburetor is set in
compliance with California Emission Regulations.
In addition, the carburetor is equipped with H (High Speed
Needle) and L (Low Speed Needle) needle adjustment limiters
that prevent settings outside acceptable limits.
P
OWER BLOWER
O
PERATOR'S MANUAL
21
1. Before adjusting carburetor clean or replace air filter and
muffler, Spark Arrestor Screen.
2. 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.
3. Stop engine. Turn H speed needle CCW (Counter Clockwise) to stop. Turn L speed needle midway between full CW
(Clockwise) stop and CCW stop.
4. Idle Speed Adjustment
Before adjusting blower, install all blower pipes.
Start engine, turn idle speed adjustment screw either CW
or CCW until the tip just contacts the throttle plate.
Then turn (2) two additional turns CW for initial setting.
Blower should operate with an even idle at low r/min.
5. 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.
High speed needle (H)
Low speed needle (L)
Idle adjustment needle
6. Check idle speed and reset if necessary as described in item 4.
Page 22
22
TROUBLESHOO TING
Problem
Engine - starts hard
Engine - does not start Cause Remedy
Engine
Cranks
Engine
does not
crank
Fuel at
carburetor
Fuel at
cylinder
Spark at end
of plug wi re
Spark at plug No spark
No fuel at
carburetor
No fuel at
cylinder
Muffler wet
with fuel
No sp ark
at end of
plug wire
at plug
Fuel strainer clogged
Fuel line clogge d
Carburetor
Carburetor See your EC HO dealer
Fuel Mixture is too rich Open choke
Stop switch off
Electrical problem
Spark gap incorrect
Covered with carbon
Fouled with fuel
Spark plug defective
Internal engine problem See your ECHO dealer
Clean
Clean
See your EC HO dealer
Ask
Ask
Clean/replace air filter
Adjust carburetor
See your EC HO dealer
Ask
Turn switch on
See your EC HO dealer
Ask
Adjust 0.65mm (0.026in.)
Clean or replace
Clean or replace
Replace plug
Ask
Engine
runs
Engine
runs
properly
Dies or accelerates poorly Air filter dirty
Fuel filter dirty
Fuel vent plugged
Spark plug
Carburetor
Cooling system plugged
Spark arrestor screen plugged
Blower does not work,
is weak or uneven.
Blower pi pe clogged, loose,
or damaged.
Clean or replace
Replace
Replace
Clean and adjust/replace
Adjust
Clean
Clean
Unclog
Tighten
WARNING DANGER
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding spark plug against cylinder, otherwise serious personal injury may result.
Page 23
P
OWER BLOWER
O
PERATOR'S MANUAL
STORA GE
WARNING DANGER
During operation the muffler or catalytic muffler and surrounding cover becomes hot. Always keep exhaust area
clear of flammable debris during transportation or when storing, otherwise serious property damage or personal
injury may result.
Long Term Storage (Over 30 Days)
Do not store your unit for a prolonged period of time (30 days or longer) without performing protective storage maintenance which includes the following:
1. Store unit in a dry, dust free place, out of the reach of children.
23
WARNING DANGER
Do not store where fuel fumes may accumulate or reach an open
flame or spark.
2. Place the stop switch in the STOP position.
3. Remove accumulation of grease, oil, dirt and debris from exterior of
unit.
4. Perform all periodic lubrication and services that are required.
5. Tighten all screws and nuts.
6. Drain the fuel tank completely and pull the recoil starter handle
several times to remove fuel from the carburetor.
7. Remove the spark plug and pour 7 mL (1/4 oz., 1/2 tablespoon) of
fresh, clean ECHO 2-stroke engine oil into the cylinder through
the spark plug hole.
A. Place a clean cloth over the spark plug hole.
B. Pull the recoil starter handle 2 or 3 times to distribute the oil
inside the engine.
Stop Switch
C. Observe the piston location through the spark plug hole.
Pull the recoil handle slowly until the piston reaches the top
of its travel and leave it there.
8. Install the spark plug (do not connect ignition cable).
9. Remove blower pipe assembly from unit.
Page 24
ECHO, INCORPORA TED
400 Oakwood Road
Lake Zurich, IL 60047-1564
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