1Top cover(composite volume)
ENGLISH
FRANÇAIS
DEUTSCH
ITALIANO
ESPAÑOL
OPERATOR'S MANUAL
MANUEL D'UTILISATION
BEDIENUNGSANLEITUNG
MANUALE PER L'OPERATORE
MANUAL DE INSTRUCCIONES
PB-770
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
AVERTISSEMENT
LIRE ATTENTIVEMENT LES INSTRUCTIONS ET SUIVRE LES RE-GLES DE
SECURITE. LE NON-RESPECT DES REGLES DE SECU-RITE ENTRAINE UN
RISQUE DE BLESSURE GRAVE.
WARNUNG
LESEN SIE DIE BEDIENUNGSANLEITUNG SORGFÄLTIG DURCH, UND BEFOLGEN SIE DIE SICHERHEITSREGELN. ANDERNFALLS BESTEHT DAS
RISIKO SCHWERER VERLETZUNGEN.
AVVERTENZA
LEGGERE E SEGUIRE ATTENTAMENTE LE ISTRUZIONI PER LA-VORARE
IN CONDIZIONI DI MASSIMA SICUREZZA. LA MANCA-TA OSSERVANZA
DELLE ISTRUZIONI POTREBBE PROVOCARE LESIONI GRAVI.
ADVERTENCIA
LEA ATENTAMENTE LAS INSTRUCCIONES Y SIGA LAS INDICA-CIONES
PARA UN FUNCIONAMIENTO SEGURO. DE NO HACER-LO, PODRÍA SUFRIR
LESIONES GRAVES.
Packing list
Packing list
3
1Top cover
ENGLISH
(Original instructions)
OPERATOR'S MANUAL
PB-770
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE
RULES FOR SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
Important information
2Important information
Please ensure that you read the operator's manual before using your product.
Intended use of this product
ECHO Power Blowers are designed for blowing away dust of various sorts, including fallen leaves.
Do not use this unit for any purpose other than aforementioned.
Users of the product
You should not use this product until you have read the operator's manual carefully and fully absorbed its content.
This product should not be used by anyone who has failed to read the operator's manual properly, is suffering from a
cold, tiredness or otherwise in poor physical condition, or children.
Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their prop-
erty.
About your operator's manual
This manual contains necessary information about the assembly, operation, and maintenance of your product. Please
read it carefully and absorb its contents.
Always keep your manual in a place where it is readily accessible.
If you have lost your manual or it is damaged and no longer readable, please purchase a new one from your ECHO
DEALER.
The units used in this manual are SI units (International System of Units). Figures in parentheses are reference values,
and there may be a slight conversion error in some cases.
Loaning or assigning your product
When loaning the product described in this manual to another party, ensure that the person borrowing and working with
the product receives the operator's manual along with the product. If you assign your product to another party, please
enclose the operator's manual with the product when handing it over.
Enquiries
Please contact your ECHO DEALER for requests regarding information about your product, the purchase of consum-
ables, repairs, and other such enquiries.
Notices
The content of this manual may be changed without notice for the purpose of upgrades to the product. Some of the
illustrations used may differ from the product itself in order to make the explanations clearer.
This product requires the assembly of some parts.
Please consult your ECHO DEALER if anything is unclear or of concern.
Manufacturer
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
Authorized Representative in Europe
Atlantic Bridge Limited
Atlantic House, PO Box 4800, Earley, Reading RG5 4GB, United Kingdom
2
Contents
For safe use of your product ............................................................................................... 4
Warning notices ............................................................................................................. 4
Other indicators ............................................................................................................. 4
Symbols.........................................................................................................................4
Location in which the safety decal is attached............................................................... 6
Handling fuel.................................................................................................................. 7
Handling the engine....................................................................................................... 8
Handling the product ..................................................................................................... 9
Packing list........................................................................................................................ 12
Description........................................................................................................................13
Before you start ................................................................................................................14
Assembly ..................................................................................................................... 14
Preparing the fuel ........................................................................................................ 15
Engine operation............................................................................................................... 16
Starting the engine ...................................................................................................... 16
Stopping the engine..................................................................................................... 18
Operation ..........................................................................................................................19
Operating blower ......................................................................................................... 19
Maintenance and care ...................................................................................................... 20
Servicing guidelines..................................................................................................... 20
Maintenance and care ................................................................................................. 20
Troubleshooting table .................................................................................................. 24
Long-term storage(30 days or more)........................................................................... 25
Specifications.................................................................................................................... 26
Declaration of conformity .................................................................................................. 27
3
For safe use of your product
Be careful to read this section before using your product.
For safe use of your product
The precautions described in this section contain important safety information. Please observe them carefully.
You must also read the precautions that appear in the body of the manual itself.
Text following a [diamond mark] mark describes the potential consequences of failing to observe the precaution.
Warning notices
Situations where there is a risk of physical injury to the operator and other people are indicated in this manual and on the product
itself by the following warning notices. Always read and observe them carefully in order to ensure safe operation.
DANGER WARNING CAUTION
This symbol accompanied by the
word "DANGER" calls attentions to
an act or a condition which will lead to
serious personal injury or death of operators and bystanders.
Other indicators
As well as warning notices, this manual uses the following explanatory symbols:
This symbol accompanied by the
word "WARNING" calls attentions to
an act or a condition which can lead to
serious personal injury or death of operators and bystanders.
"CAUTION" indicates a potentially
hazardous situation which, if not
avoided, may result in minor or moderate injury.
NOTE IMPORTANT
Circle and slash symbol means whatever is
shown is prohibited.
This enclosed message provides tips
for use, care and maintenance of the
product.
Framed text featuring the word "IM-
PORTANT" contains important information about the use, checking,
maintenance and storage of the product described in this manual.
Symbols
In this manual and on the product itself, a series of explanatory symbols is used. Please make sure that you fully understand what
each symbol means.
Symbol form/shape Symbol description/applica-
tion
Carefully read the operator's
manual
Wear eyes, ears and head
protection
Safety / Alert
Emergency stop
Symbol form/shape Symbol description/applica-
tion
Petrol and oil mixture
Purge bulb (Primer)
Carburettor adjustment
- Low speed mixture
Carburettor adjustment
- High speed mixture
Finger Severing
Carburettor adjustment
- Idle speed
4
For safe use of your product
Symbol form/shape Symbol description/applica-
tion
Do not use the product in places with poor ventilation
Beware of fire
Beware of electric shocks Idle speed
Guaranteed sound power level
Ignition
ON / OFF
Symbol form/shape Symbol description/applica-
tion
Choke Control
"Cold Start"
Position
(Choke Closed)
Choke Control
"Run"
Position
(Choke Open)
Fast speed
Beware of high-temperature
areas
Engine start
5
For safe use of your product
Location in which the safety decal is attached
The safety decal shown below has been attached to the product described in this manual. Ensure that you understand what the
decal means before using your product.
If the decal becomes unreadable due to wear and tear or damage, or peels off and is lost, please purchase a replacement decal
from your ECHO DEALER and attach it in the location shown in the illustrations below. Ensure that the decal is readable at all
times.
1. Safety decal (Part number X505002310)
2. Safety decal (Part number 89016009461)
6
For safe use of your product
Handling fuel
DANGER
Always keep well away from fire when refuelling
Fuel is highly inflammable and leads to a risk of fire if mishandled. Use extreme care when mixing, storing or handling
or serious personal injury may result. Be careful to observe the following instructions.
Do not smoke or hold a flame near when refuelling.
Do not fuel up while the engine is hot or in operation.
If you do so, the fuel could ignite and cause fire, leading to burns.
About the container and refuelling place
Use an approved fuel container.
Fuel tanks/cans may be under pressure.
Always loosen fuel caps slowly allowing pressure to
equalize.
DO NOT fill fuel tanks indoors.
ALWAYS fill fuel tanks outdoors over bare ground.
Fuel spills can cause fire
Observe the following precautions when refuelling:
Do not add so much fuel that it reaches the mouth of the
fuel tank. Keep the fuel within the prescribed level (up to
the shoulder level of the fuel tank).
Mop up any fuel that overflows or spills out due to overfilling.
Tighten the fuel tank cap securely after refuelling.
Fuel spills can cause fire and burns when ignited.
1. Fuel tank
2. Shoulder level
Do not start the engine in the area where you refueled
You must not start the engine in the place where you
carried out the refuelling. Move at least 3m from the
place where you refueled before starting the engine.
Fuel leaks that occur while refuel-
ling can cause fire if ignited.
Fuel leaks cause fire
After refuelling, always check
that there are no leaks or discharges of fuel from the fuel
pipe, fuel system grommets, or
around the fuel tank cap.
If you do find fuel leaks or discharges, stop using the
product immediately and contact your ECHO DEALER
to have it repaired.
Any fuel leaks could cause fire.
7
For safe use of your product
Handling the engine
WARNING
Starting the engine
Be particularly careful to observe the following precautions when starting the engine:
Check that none of the nuts and bolts are loose
Check that there are no fuel leaks
Do not try to start the engine with the product shouldered
Place the product in a flat, well ventilated place
Leave plenty of space around the product and do not allow people or animals near it
Remove obstructions, if any
Start the engine with the throttle lever in the start/operation position
Hold the product firmly to the ground when starting the
engine
Failure to observe the precautions could cause an accident
or injury, or even lead to a fatality.
Once the engine has started, check for abnormal vibrations and sounds
Check that there are no abnormal vibrations or sounds
once the engine starts. Do not use the product if there
are abnormal vibrations or sounds. Contact your ECHO
DEALER to have it repaired.
Accidents involving parts that fall or shatter off can cause
wounds or serious injury.
Do not touch high temperature or high voltage components while the product is running
Do not touch the following high temperature or high voltage components while the product is running or for some
time after it stops.
Silencer, cylinder, and other high temperature components
You could burn yourself if you touch a high
temperature component.
Spark plug, spark plug wire, and other
high voltage components
You could receive an electric shock if you
touch a high voltage component while the
product is running.
Exhaust fumes are toxic
The exhaust fumes from the engine contain toxic gases.
Do not operate the product indoors or in a plastic greenhouse or in other ill ventilated places.
The exhaust fumes could cause poisoning.
Turn off the engine when checking or maintaining
the product
Observe the following precautions when checking and
maintaining your product after use:
Turn the engine off and do not attempt to check or maintain the product until the engine has cooled
You could burn yourself.
Remove the spark plug cap before performing checks
and maintenance
An accident could occur if the product starts unexpectedly.
Checking the spark plug
Observe the following precautions when checking the
spark plug.
If the electrodes or terminals are worn, or if there are
cracks in the ceramics, replace them with new parts.
The spark test (for checking whether the spark plug is
sparking) must be carried out by a professional. Please
ask your ECHO DEALER.
The spark test must not be carried out in proximity of
the spark plug hole.
The spark test must not be performed in places where
there are fuel spills or inflammable gases
You must not touch the
metal parts of the spark
plug
The spark plug could ig-
nite a fire or give you an
electric shock.
Put safety first in the case of fire or smoke
If fire comes from the engine or smoke appears from
any area other than the exhaust vent, first distance
yourself from the product to ensure your physical safety.
Use a shovel to throw sand or other such
material on the fire to prevent it from
spreading, or put it out with a fire extinguisher.
A panicked reaction could result in the fire and
other damage becoming more extensive.
8
For safe use of your product
Handling the product
General precautions
Operator's manual
Be careful to read the operator's manual
properly before using your product in order to ensure correct operation.
Failure to do so could lead to an accident or
serious injury.
Do not use the product for anything
other than its intended purpose
You must not use the product for any purpose other
than those described in the operator's manual.
To do so could lead to an accident or serious injury.
Do not modify the product
You must not modify the product.
To do so could lead to an accident or serious injury. Any
malfunction resulting from a modification to the product will
not be covered by the manufacturer's warranty.
WARNING
Loaning or assigning your product
When loaning your product to another party, ensure
that the person borrowing the product receives the operator's manual along with it.
If you assign your product to another party, please enclose the operator's manual with the product when
handing it over.
Failure to do so could lead to an accident or serious injury.
Being prepared in case of an injury
In the unlikely event of an accident or injury, please ensure
that you are prepared.
First aid kit
Towels and wipes (to stop any bleeding)
Whistle or mobile phone (for calling outside help)
If you are unable to perform first aid or call for outside help,
the injury could worsen.
Do not use the product unless it has been checked
and maintained
You must not use the product unless it has been
checked and maintained. Always ensure that the product is checked and maintained on a regular basis.
Failure to do so could lead to an accident or serious injury.
9
For safe use of your product
Precautions for use
WARNING
Users of the product
The product should not be used by:
people who are tired
people who have taken alcohol
people who are on medication
people who are pregnant
people who are in poor physical
condition
people who have not read the operator's manual
children
Failure to observe these instruc-
tions could lead to an accident.
Environment of use and operation
Do not use the product:
when it is raining, thundering, or lightning strikes are
likely to occur.
on steep slopes or in place which give no secure foothold and are thus slippery.
at night or in places with poor visibility.
A serious injury could result if you fall or slip, or fail to oper-
ate the product correctly.
Using the product
When using the product, pay special attention to observe
the following precautions.
Do not allow people who are irrelevant to the work conducted or animals to be in the worksite.
Do not point the blower pipe at people or animals.
Do not use the product in places where there is no sure
foothold.
Hold the arm tightly.
Avoid using the product late at night or early in the
morning so that the neighbors will not be disturbed by
noise.
Failure to observe these instructions could lead to an acci-
dent or injury.
Turn off the engine when moving around
When moving around in the situations described below,
turn off the engine and move with the product shouldered.
Failure to observe these precautions could cause burns or
Travelling by car with fuel in the fuel tank could lead to a fire.
Be careful not to get caught in the fan
The wind pressure from the fan could make your hand get
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,
followed by loss of colour and numbness in the fingers.
The following precautions are strongly recommended because the minimum exposure which might trigger the ailment is unknown.
Failure to observe these instructions could result in damage
Moving to the place where you are working
Moving to another area while you are working
Leaving the place where you have been working
serious injury.
When transporting the product by car, empty the fuel
tank, put the product in the upright position, and secure
it firmly in place to prevent it from moving around.
Be careful not to get your hair caught in the fan.
Never put your hand in between the engine and the
backpack frame when the product is in operation.
caught in the fan, resulting in a serious injury.
Keep your body warm, especially the head and neck,
feet and ankles, and hands and wrists.
Maintain good blood circulation by performing vigorous
arm exercises during frequent work breaks, and also by
not smoking.
Limit the number of 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 exposing yourself further
to cold and vibration.
to your health.
10
For safe use of your product
WARNING
Repetitive stress injuries
It is believed that over-using the muscles and tendons of
the fingers, hands, arms and shoulders may cause soreness, swelling, numbness, weakness and extreme pain to
the areas just mentioned. Certain repetitive hand activities
may put you at a high risk for developing a repetitive
stress injury (RSI).
To reduce the risk of RSI, do the following:
Avoid using your wrist in a bent, extended or twisted
position.
Take periodic breaks to minimize repetition and rest
your hands. Reduce the speed and force in which you
do the repetitive movement.
Do exercises to strengthen hand and arm muscles.
See a doctor if you feel tingling, numbness or pain in
your fingers, hands, wrists or arms. The sooner RSI is
diagnosed, the more likely permanent nerve and muscle
damage can be prevented.
Failure to observe these instructions could result in damage
to your health.
Turn off the engine immediately if anything goes
wrong
Turn off the engine immediately if the product suddenly
starts to emit abnormal sounds or vibrate abnormally.
The product cannot be used when it suffers from abnormal vibration or sounds.
Contact your ECHO DEALER for repair.
Continuing to use parts when they are damaged could lead
to an accident or serious injury.
Protective gear
WARNING
Wear protective gear
Wear appropriate work clothes and protective gear
when working with the power blower. Above all, make
sure to wear safety goggles, a dust mask, and ear muffs
at all times while working.
Without the protective gear, you could inhale the debris or
dust blown away or get them in your eyes, which could lead
to an accident or injury.
a Head protection (helmet): Protects the head
b Ear muffs or ear plugs: Protect the hearing
c Safety goggles: Protect the eyes
d Dust mask
e Safety gloves: Protect the hands from cold and vibration
f Work clothes that fit (long sleeves, long trousers): Pro-
tect the body
g Heavy duty, non-slip protective boots (with toecaps) or
non-slip work shoes (with toecaps): Protect the feet
Failure to observe these precautions could result in damage
to your sight or hearing, or lead to a serious injury.
Wear proper clothing
Do not wear ties, jewellery, or loose, dangling clothing which could be
caught in the unit. Do not wear open toed footwear, or go bare-foot or
barelegged. In certain situations, total face and head protection may be required.
Failure to observe these precautions could result in damage to your sight or
hearing, or lead to a serious injury.
11
Packing list
The following parts are packed separately in the packing box.
When you have unpacked the box, please check the parts that it contains.
Contact your ECHO DEALER if anything is missing or broken.
Number Part name Quantity Number Part name Quantity
(1) Power Head 1 (6) Clamps w/screws 2
(2) Flex Pipe 1 (7) Guide Loop 1
(3) Swivel Pipe 1 (8) Intake cover 1
(4) Straight Pipe 1 (9) T-Wrench 1
(5) Straight Pipe 1 (10) Operator's Manual 1
Packing list
12
Description
Description
1. Spark plug Provides spark to ignite fuel mixture.
2. Spark arrester - Catalytic silencer / Silencer The si-
lencer or catalytic silencer controls exhaust noise and
emission. The spark arrester screen prevents hot, glowing particles of carbon from leaving the silencer. Keep
exhaust area clear of flammable debris.
3. Serial number label Lists model number and serial
number of unit.
4. Starter handle Pull recoil handle slowly until recoil starter
engages, then quickly and firmly. When engine starts,
return handle slowly. DO NOT let handle snap back or
damage to unit will occur.
5. Air cleaner Contains replaceable air filter element.
6. Choke Choke is located on the side of the air cleaner.
Move choke lever to position to close choke for cold
starting. Move choke lever to position to open
choke.
7. Purge bulb Pumping purge bulb before starting engine
draws fresh fuel from the fuel tank, purging air from the
carburettor. Pump purge bulb until fuel is visible. Pump
purge bulb an additional 4 or 5 times.
8. Fuel tank Contains fuel and fuel filter.
9. Fuel tank cap Covers and seals fuel tank.
10. Shoulder harness Used to support unit on operator's
back. The straps are adjustable.
11. Handle Used by operator to direct and control air flow.
12. Combination Throttle Position / Stop Switch Button
Controls engine speed and turns ignition on or off. Forward position - STOP. First detent position - IDLE. Move
button back to increase speed, forward to decrease
speed. Use throttle position button to set and hold blower speed for continuous operation.
13. Throttle trigger Spring-loaded throttle trigger controls
engine speed. Releasing trigger returns engine to
speed set by Throttle Position / Stop Switch Button. Always release trigger and allow engine to return to idle
before shutting off with Throttle Position / Stop Switch
Button. Use throttle trigger to vary blower speed settings
for intermittent operation.
14. Locking knob Allows operator to adjust handle position
for optimum comfort and control.
15. Blower pipes Exclusive positive locking system.
16. Flexible pipe Allows for full range of movement.
13
Before you start
Before you start
Assembly
WARNING
Read the operator's manual carefully to ensure that you assemble the product correctly.
Never perform maintenance or assembly procedures with engine running.
Using a product that has been incorrectly assembled could lead to an accident or serious injury.
Install blower pipes
1. Place guide loop across elbow clamp, and turn until clip fully
engages clamp band.
2. Assemble clamps onto both ends of flexible pipe.
NOTE
Clamp with cable guide loop fits elbow end of flexible pipe.
1. Guide loop
3. Flexible pipe
1. Handle
3. Swivel pipe
5. Anti-static wire
1. Throttle cable
3. Knob
2. Two clamps
4. Swivel pipe
2. Knob
4. Clamp
6. Elbow
2. Guide loop
3. Assemble swivel pipe into flexible pipe and tighten clamp.
4. Loosen knob on handle. AIign notch in handle with tabs. Install onto swivel pipe past long ridges in pipe.
5. Insert anti-static wire through flexible pipe.
6. Assemble flexible pipe to elbow on blower. Position guide
loop on outside of flexible pipe (away from blower) and tighten clamp.
NOTE
A light lubricant may be used to ease assembly of flexible pipe
to blower elbow.
NOTE
Hang handle freely from blower to assure throttle cable is not
twisted before installing handle.
7. Clip throttle cable into throttle cable guide loop.
8. Position handle for comfortable operation, and tighten knob
hand tight.
9. Assemble straight pipe onto swivel pipe, 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.
10. Assemble straight pipe with decal to straight pipe as in step
9.
1. Swivel pipe
3. Straight pipe
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
instructions 9 & 10.
2. Straight pipe
14
Before you start
Preparing the fuel
DANGER
Fuel is highly inflammable and there is a risk of fire if it is handled incorrectly. Carefully read
and observe the precautions in the section of this manual titled "For safe use of your product".
Once the refuelling is complete, securely tighten the fuel tank cap and do not forget to
check that there are no leaks or discharges of fuel from the fuel pipe, fuel system grommets,
or around the fuel tank cap. If you do find fuel leaks or discharges, stop using the product
immediately and contact your ECHO DEALER to have it repaired.
If the fuel ignites, it could cause burns and fire.
CAUTION
There is difference in pressure between the fuel tank and the outside air. When refuelling, loosen the fuel tank cap
slightly to eliminate the difference in pressure.
Otherwise, fuel may get spewed.
NOTE
Stored fuel ages. Do not mix more fuel than you expect use in thirty (30) days. Do not mix directly in fuel tank.
Fuel
Fuel supply
1. Fuel tank 2. Shoulder level
Fuel is a mixture of regular grade petrol and an air-cooled 2-
stroke engine oil of reputable brand name.
Minimum 89 Octane unleaded petrol is recommended. Do not
use fuel containing methyl alcohol or more than 10 % of ethyl
alcohol.
Recommended mixture ratio; 50 : 1 (2 %) for ISO-L-EGD
Standard (ISO/CD 13738), JASO FC,FD grade and ECHO
Premium 50 : 1 oil.
- Do not mix directly in engine fuel tank.
- Avoid spilling petrol or oil. Spilled fuel should always be
wiped up.
- Handle petrol with care, it is highly inflammable.
- Always store fuel in approved container.
Always refuel in a well ventilated location. Do not pour fuel in-
doors.
Place the product and the refuelling tank on the ground when
performing the refuelling operation. Do not refuel the product
on the loading platform of a truck, or in other such places.
Always ensure that the fuel level remains below the shoulder
level of the fuel tank when refuelling.
There is a difference in pressure between the fuel tank and the
outside air. When refuelling, loosen the fuel tank cap slightly to
eliminate the difference in pressure.
Always wipe up any fuel spills.
Move at least 3m away from where you refueled before you
start the engine.
Keep the refuelling tank in a shaded area away from fire.
15
Engine operation
Engine operation
Starting the engine
WARNING
When starting the engine, observe the precautions described from Page 4 in the section "For safe use of your product" to ensure that you operate the product correctly.
Failure to observe the precautions could cause an accident or injury, or even lead to a fatality.
NOTE
Pull out the starter grip gently at first, and then more rapidly. Do not pull the starter rope out to more than 2/3 of its length.
Do not let go of the starter grip as it returns.
To start the engine, return the choke knob when you hear the first explosion-like sound and pull on the starter grip again. Be
careful not to miss the first explosion-like sound.
Starting a cold engine
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.
1. Throttle Position / Stop
Switch Button
1. Choke 2. Purge bulb
1. Throttle Position / Stop Switch Button
Slide Throttle Position / Stop Switch Button back to idle position (first detent away from stop position).
2. Choke
Move choke lever to position.
3. Purge Bulb
Pump purge bulb until fuel is visible.
4. Recoil Starter
Pull recoil starter handle until engine fires, or maximum 5
pulls.
5. Choke
Move choke lever to position and if necessary, restart engine.
1. Recoil starter handle
NOTE
If engine does not start after 5 pulls, repeat instructions 2-5.
NOTE
Allow engine to warm up before use.
16
Engine warm-up
Starting a warm engine
1. Throttle Position / Stop
Switch Button
Engine operation
1. Once the engine starts, allow it to warm up for 2 to 3 minutes
at idling (i.e. low speed).
2. Warming the engine helps to lubricate its internal workings
more smoothly. Allow the engine to warm up fully, especially
when it is cold.
3. Never run the engine without the blower pipes fitted.
The starting procedure is the same as Cold Start except DO
NOT close the choke.
1. Throttle Position / Stop Switch Button
Slide Throttle Position / Stop Switch Button back to idle position (first detent away from stop position).
1. Purge bulb
2. Purge Bulb
Pump purge bulb until fuel is visible.
3. Recoil Starter
Pull recoil starter handle and engine should start.
NOTE
If engine does not start after 5 pulls, use cold start procedures.
1. Recoil starter handle
17
Engine operation
Stopping the engine
1. Throttle Position / Stop
Switch Button
1. Throttle Position / Stop Switch Button
Release throttle trigger. Move Throttle Position / Stop Switch
Button forward to idle position (first detent away from stop position) and allow engine to return to idle before shutting off engine.
2. Throttle Position / Stop Switch Button
Move Throttle Position / Stop Switch Button all the way forward to (Stop) position.
WARNING
If engine does not stop when Throttle Position / Stop
Switch Button is moved to STOP position, close choke -
position- to stall engine. Have your ECHO dealer repair
stop switch before using blower again.
18
Operation
Operation
Operating blower
WARNING
Always wear safety glasses, hearing protection, 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.
IMPORTANT
To avoid engine damage due to over revving, do not block blower pipe opening.
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.
Read the Safety Section carefully.
1. Use only during appropriate hours.
2. Allow the engine to warm up at a fast idle for a few minutes.
3. Control engine speed with throttle trigger, or for continuous
use, set engine speed with Throttle Position / Stop Switch
Button.
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.
1. Throttle Position / Stop
Switch Button
2. Throttle trigger
6. Higher speed may be necessary to move gravel, dirt, snow,
bottles or cans from a driveway, street, parking lot or stadium.
7. Always stop unit using stop engine procedure.
Cold weather operation
1. Back cushion
1. Intake cover
Install intake cover when you feel cold on your back.
1. Remove back cushion from frame.
2. Install intake cover on frame over air intake.
3. Install back cushion to frame over intake cover.
NOTE
Blower performance may be reduced slightly.
19
Maintenance and care
Maintenance and care
Servicing guidelines
Area Maintenance Page Before use Monthly
Air filter Inspect/Clean/Replace 20 •
Fuel filter Inspect/Replace 21 •
Spark plug Inspect/Clean/Adjust/Replace 23 •
Carburettor Inspect 21 •
Cooling system Inspect/Clean 22 •
Exhaust system Inspect/Tighten/Clean 22 •
Starter Inspect - •
Fuel system Inspect - •
Screws, bolts and nuts Inspect/Tighten/Replace - •
IMPORTANT
Time intervals are maximum. Actual use and your experience will determine the frequency of required maintenance.
Maintenance and care
If you have any questions or problems, please contact your ECHO DEALER.
Cleaning air filter
Tools required: 25-50 mm (1-2 in.) Cleaning brush
Parts required: Air filter
1. Move choke lever to position. This prevents dirt from entering the carburettor throat when the air filter is removed.
Brush accumulated dirt from air cleaner area.
2. Remove air filter cover. Brush dirt from inside cover.
3. Remove air filter and element plate, and then lightly brush
debris from them. Replace filter if it is damaged, fuel soaked,
very dirty, or the rubber sealing edges are deformed.
4. If filter can be reused, be certain it:
Fits tightly in the air filter cavity.
Is installed with the original side out.
5. Install air filter cover.
1. Air filter cover
3. Element plate
2. Air filter
20
Replacing fuel filter
Maintenance and care
Tools required: 200-250 mm (8-10 in.) length of wire with
one end bent into a hook, clean rag, funnel,
and an approved fuel container
Parts required: Fuel line and filter
DANGER
Fuel is VERY flammable. Use extreme care when mixing,
storing or handling.
NOTE
If filter is excessive dirty or no longer fits properly, replace it.
1. Fuel cap
3. Fuel line
5. Fuel tank
Carburettor adjustment
2. Fuel filter
4. Fuel line hook
1. Use a clean rag to remove loose dirt from around fuel cap
and empty fuel tank.
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.
Tools required: Screwdriver, tachometer (Echo P/N
99051130017)
Parts required: None
NOTE
Every unit is run at the factory and the carburettor is set in compliance with Emission Regulations. This carburettor does not
have acceleration and high speed adjustment needles. Do not
attempt to use carburettor adjustment procedures provided in
the Warranty Emissions Booklet.
1. Screw
Before Adjustment
Check that:
Air filter is clean and properly installed.
Spark arrester screen and silencer are free of carbon.
Blower pipes are installed.
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 carburettor chambers.
3. Check idle speed and reset if necessary. If a tachometer is
available, idle speed screw should be set to the specifications found on Page 26"Specifications" of this manual. Turn
idle screw clockwise to increase idle speed; anticlockwise to
21
Maintenance and care
decrease idle speed.
Cooling system maintenance
IMPORTANT
To maintain proper engine operating temperature, 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,
or
Dust and grass build up on the out side of the cylinder. This build-up insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages or cleaning of cylinder fins is considered "Normal Maintenance". Any resultant failure
attributed to lack of maintenance is not warranted.
Tools required: Torx L-Wrench T27, Cleaning brush
Parts required: None, if you are careful.
1. Air intake
Cleaning Grill and Cylinder Fins
1. Remove accumulated debris from intake grill between backpack frame and blower housing.
2. Disconnect spark plug lead from spark plug.
3. Remove air filter cover.
4. Remove engine cover (10 screws).
5. Clean cylinder fins to allow cooling air to pass freely.
6. Reassemble parts in reverse order.
IMPORTANT
Do not over-tighten screws, otherwise mounting holes may become stripped.
1. Spark plug 2. Cylinder fins
Exhaust system
Spark Arrester Screen
Tools required: Torx L-Wrench T27, Soft metal brush
Parts required: Spark arrester screen, Gasket
22
1. Spark arrester screen
3. Spark arrester cover
2. Gasket
Maintenance and care
IMPORTANT
Carbon deposits in silencer will cause a drop in engine output
and overheating. Spark arrester screen must be checked periodically.
1. Disconnect spark plug lead from spark plug.
2. Remove spark arrester cover, gasket, and spark arrester
screen from silencer. Replace screen if plugged with carbon
deposits.
3. Install spark arrester screen, gaskets, and cover.
4. Connect spark plug lead.
Silencer and Exhaust Port
Tools required: Torx L-Wrench T27, Wooden or plastic scraper
Parts required: Gasket
1. Silencer 2. Gasket
Check spark plug
IMPORTANT
Carbon deposits in cylinder exhaust port and silencer will
cause a drop in engine output and overheating. Silencer exhaust port must be checked periodically. Be careful not to
scratch the cylinder or piston when cleaning the cylinder exhaust port.
1. Disconnect spark plug lead from spark plug.
2. Remove engine cover (10 screws).
3. Remove silencer and gasket.
4. Clean cylinder exhaust port being careful not to scratch cylinder or piston, using a wooden or plastic scraper.
5. Install gasket and silencer.
6. Install engine cover.
Tools required: T-Wrench, Feeler gauge
Parts required: Spark plug
a: 0.6 - 0.7 mm
IMPORTANT
Use only NGK BPMR8Y spark plug otherwise severe engine
damage may occur.
1. Check plug gap. Correct gap is 0.6 mm to 0.7 mm.
2. Inspect electrode for wear.
3. Inspect insulator for oil or other deposits.
4. Replace plug if needed and tighten to 15 N·m - 17 N·m (150
kgf·cm to 170 kgf·cm).
23
Maintenance and care
Troubleshooting table
Problem Diagnosis Cause Solution
Engine is difficult to start,
fluctuating rotation
No fuel is entering the overflow pipe
Fuel filter is clogged
Fuel system is clogged
Internal carburettor parts sticking
Clean or replace
Clean
Consult your ECHO
DEALER
or
The engine
does not start
Engine starts
but no acceleration is possible
Checking and maintenance requires specialist knowledge. If you are unable to check and maintain the product or deal with a
fault yourself, consult your ECHO DEALER. Do not attempt to dismantle the product.
Consult your ECHO DEALER in the event of a problem that is not covered in the table above, or other such concerns.
For spare parts and consumables, please use only genuine parts and designated products and components. Using parts from
other manufacturers or non-designated components may result in a malfunction.
Fuel is entering the overflow pipe
The crankshaft does not rotate
The spark plug is dirty or
damp
Fuel degradation
Carburettor problem
Internal engine malfunction Consult your ECHO
Fuel degradation
Incorrect electrode gap
Carbon deposits
Electrical fault
Dirty air filter
Dirty fuel filter
Blocked fuel passage
Carburettor adjustment problem
Spark plug problem
Blocked exhaust vent or silencer vent
Spark arrester screen plugged or normal
wear
Replace with new fuel
Consult your ECHO
DEALER
DEALER
Replace with new fuel
Adjust or Replace
Clean or Replace
Consult your ECHO
DEALER
Clean or replace
Clean or replace
Consult your ECHO
DEALER
Consult your ECHO
DEALER
Clean, Adjust or Replace
Clean
Clean or replace
24
Maintenance and care
Long-term storage(30 days or more)
WARNING
During operation the silencer - catalytic silencer and surrounding cover become hot. Always keep exhaust
area clear of flammable debris during transportation or when storing, otherwise serious property damage
or personal injury may result.
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.
WARNING
Do not store where fuel fumes may accumulate or reach an
open flame or spark.
1. Throttle Position / Stop
Switch Button
2. Place the Throttle Position / Stop Switch Button 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 carburettor.
7. Remove the spark plug and pour 10mL 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 2-3 times to distribute the
oil inside the engine.
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. Fit the spark plug. (Do not connect the spark plug cap. )
9. Remove blower pipe assembly from unit.
1. Spark plug 2. Spark plug cap
Please contact your ECHO DEALER in order to dispose of the product or its parts in compliance with national laws.
25
Specifications
Specifications
Mass: kg 9.8
External dimensions:
Length
Width
Height
Engine:
Type
Engine displacement
Maximum power
Engine speed at maximum engine power
Recommended maximum engine speed
Recommended engine idling speed
Carburettor
Ignition
Spark plug
Starter
Air Volume with straight pipe: m
mm
mm
mm
mL (cm
kW
r/min
r/min
r/min
3
/min 21.7
375
490
475
Air cooled 2-stroke single cylinder
3
)
63.3
2.85
6900
6900
2500
Diaphragm type
Flywheel magneto - CDI system
NGK BPMR8Y
Automatic recoil system
PB-770
Fuel:
Oil
Ratio 50 : 1 (2%)
Tank Capacity: L2.02
Sound pressure level: (ISO 22868) LpAeq = dB(A) 97.7
Guaranteed sound power level:
(2000/14/EC) L
Vibration levels: (ISO 22867) m/s
These specifications are subject to change without notice.
= dB(A) 112
WA
Regular grade petrol. Minimum 89 Octane unleaded
petrol is recommended. Do not use fuel containing
methyl alcohol or more than 10 % of ethyl alcohol.
Two stroke, air-cooled engine oil. ISO-L-EGD Standard (ISO/CD 13738), JASO FC,FD grade and ECHO
Premium 50 : 1 oil.
2
2.1
26
The undersigned manufacturer:
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME
OHME; TOKYO 198-8760
JAPAN
declares that the hereunder specified new unit:
POWER BLOWER
Brand: ECHO
Type: PB-770
assembled by:
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, Illinois 60047-1564
Declaration of conformity
Declaration of conformity
U.S.A.
complies with:
* the requirements of Directive 98/37/EC (1998) (and 2006/42/EC: from 29
* the requirements of Directive 2004/108/EC
(use of harmonized standard EN ISO 14982)
* the requirements of Directive 2002/88/EC
* the requirements of Directive 2000/14/EC
Conformity assessment procedure followed ANNEX V
Measured sound power level : 109dB(A)
Guaranteed sound power level : 112dB(A)
PB-770 Serial Number 37002001 and up
Tokyo,
October 1st 2009
YAMABIKO CORPORATION
The authorized representative in Europe
who is authorized to compile the technical file.
Company: Atlantic Bridge Limited
Address: Atlantic House, PO Box 4800,
Earley, Reading RG5 4GB, United Kingdom
th
December 2009)
K. OYURI General Manager Mr. Philip Wicks
27
1Notes and rear cover
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
PHONE: 81-428-32-6118. FAX: 81-428-32-6145.
©
2009
X753-003 91 0
X753 112-420 0
Printed in Japan
0x0xxxx zzzz ES
28
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