Echo SRM-520ES, SRM-335ES, SRM-420TES Operator's Manual
1????
ENGLISH
DEUTSCH
ITALIANO
ESPAÑOL
OPERATOR'S MANUAL
BEDIENUNGSANLEITUNG
MANUALE PER L'OPERATORE
MANUAL DE INSTRUCCIONES
SRM-520ES
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
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 LAVORARE IN
CONDIZIONI DI MASSIMA SICUREZZA. LA MANCATA OSSERVANZA DELLE
ISTRUZIONI POTREBBE PROVOCARE LESIONI GRAVI.
ADVERTENCIA
LEA ATENTAMENTE LAS INSTRUCCIONES Y SIGA LAS INDICACIONES
PARA UN FUNCIONAMIENTO SEGURO. DE NO HACERLO, PODRÍA SUFRIR
LESIONES GRAVES.
2
1Cover
ENGLISH
(Original instructions)
OPERATOR'S MANUAL
GRASS-TRIMMER/BRUSHCUTTER
SRM-520ES
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE
RULES FOR SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
Contents
For safe use of your product...............................................................................................3
Description..........................................................................................................................8
Before you start ..................................................................................................................9
Packing list ....................................................................................................................9
Assembly.......................................................................................................................9
U-handle version............................................................................................................9
Adjusting the balance ..................................................................................................11
Preparing the fuel ........................................................................................................14
Engine operation...............................................................................................................15
Starting the engine ......................................................................................................15
Stopping the engine............................. ....... ...... ....... ...................................... ....... ...... .16
Trimming operation...........................................................................................................17
Using shoulder harness...............................................................................................18
Basic trimming operation with nylon line cutting head................................................. 18
Basic trimming operation with metal blade..................................................................20
Maintenance and care .............................................................. ....... ...... ....... ...... ....... ...... .21
Servicing guidelines.....................................................................................................21
Maintenance and care .................................................................................................21
Storage........................................................................................................................26
Specifications....................................................................................................................27
Declaration of conformity..................................................................................................28
2
For safe use of your product
For safe use of your product
Important information
WARNING
Please ensure that you read the operator's manual before using your product.
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 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.
Failure to do so could lead to an accident or serious injury.
Intended use of this product
This product is lightweight, high-performance, petrol engined unit designed for weed control, grass trimming and
brush cutting in areas difficult to control by any other means.
Do not use this unit for any purpose other than aforementioned.
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.
Please consult your dealer if anything is unclear or of concern.
Failure 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.
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.
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.
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
Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their property.
Failure to observe these instructions could lead to an accident.
The ignition system of this product generates electromagnetic fields during operation. Magnetic fields can cause
pacemaker interference or pacemaker failure. To reduce health risks, we recommend that pacemaker users consult
their physician and the pacemaker manufacturer before operating this product.
3
For safe use of your product
WARNING
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.
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 trimmer 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, con-
sult your physician before exposing yourself further to cold and vibration.
Failure to observe these instructions could result in damage to y our health.
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 diag-
nosed, the more likely permanent nerve and muscle damage can be prevented.
Failure to observe these instructions could result in damage to y our health.
Proper training
Do not permit operation without proper training and protective equipment.
Be thoroughly familiar with the controls and proper use of unit.
Know how to stop the unit and shut off the engine.
Know how to unhook a harnessed unit quickly.
Never allow anyone to use the unit without proper instruction.
Failure to observe these instructions could result in damage to your health .
Wear proper clothing.
Secure hair so it is above shoulder length.
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.
Failure to observe these precautions could result in damage to your sight or hearing, or lead
to a serious injury.
Wear protective gear
Always wear the following protective gear when working with the trimmer.
1. Head protection (helmet): Protects the head
2. Ear muffs or ear plugs: Protect the hearing
3. Safety goggles: Protect the eyes
4. Face shield: Protects the face
5. Safety gloves: Protect the hands from cold and vibration
6. Work clothes that fit (long sleeves, long trousers): Protect the body
7. Heavy duty, non-slip protective boots (with toecaps) or non-slip work shoes
(with toecaps): Protect the feet
8. Shin guards: Protect the legs
Failure to observe th ese p rec aution s cou ld res ult in dama ge to yo ur sight or h earing, or
lead to a serious injury.
When necessary, please use the protective gear below.
Dust mask: Protects the breathing apparatus
Bee net: To deal with attacks by bees
4
For safe use of your product
WARNING
Environment of use and operation
Do not use the product:
under poor weather conditions.
on steep slopes or in places which give no secure foothold and are thus slippery.
at night or in dark places with poor visibility.
When using the product on a gentle slope, work in a level, contour-like motion.
A serious injury could result if you fall or slip, or fail to operate the product correctly.
For your own health and your safe and comfortable work, operate the machine within the air temperature range of
o
C to 40oC.
í5
Failure to observe these instructions could result in damage to y our health.
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.
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.
Warning notices
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 op erators and bystanders.
Other indicators
Circle and slash symbol means whatever is
shown is prohibited.
Symbols
Symbol form/shape Symbol description/applica-
This symbol ac companied 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 .
This enclosed mes sage provid es tips
for use, care and mai nte nan ce of the
product.
tion
"CAUTION" indicates a potentially
hazardous situation which, if not
avoided, may result in minor or moderate injury.
NOTE IMPORTANT
Framed text featuring the word "IMPORTANT" contains important infor-
mation about the use, checking,
maintenance a nd storag e of t he product described in this manual.
Symbol form/shape Symbol description/applica-
tion
Carefully read the operator's
manual
Wear eyes, ears and head
protection
The maximum speed of the
cutting attachment shaft in
r/min
Keep bystanders away 15 m
5
For safe use of your product
Symbol form/shape Symbol description/applica-
tion
Wear foot protection and
gloves
Emergency stop
Warning!
Thrown objects!
Warning, side thrust
Usage without shield not permitted
Symbol form/shape Symbol description/applica-
tion
Petrol and oil mixture
Choke Control "Cold Start"
Position (Choke Closed)
Choke Control "Run" Position
(Choke Open)
Carburettor adjustment
- Idle speed
U-handle
Usage of metal blades not
permitted
Usage of nylon line cutting
head not permitted
Do not use the produc t in places with poor ventilation
Beware of fire Engine start
Beware of electric shocks
-
Loop handle
Beware of high-temperature
areas
Guaranteed sound power level
6
For safe use of your product
Safety decal(s)
The safety decal shown below has been attached to the products described in this manual. Ensure that you understand what
the decal means before using your product.
If the decal bec omes unreada ble due to wea r and tear or damage, or peels off an d is lost, plea se purchase a replaceme nt decal
from your 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 890617-43130)
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Description
Description
1. Angle transmission Having two gears to change the
angle of rotating axis.
2. Cutting attachment 3 cutter blade for cutting grass,
garden debris and weeds.
3. Shield Device to protect the operator from accidental
contact with the cutting head and thrown objects.
4. Shaft tube Part of the unit that provides a casing for
power transmission shaft.
5. U-handle Having the configuration of a bicycle handle
bar to reduce working effort com pared to a loo p-handle.
6. Suspension point Device on w hich the harness can be
hooked.
7. Ignition switch "Slide switch" mounted on top of the
throttle trigger housing, move switch forward to RUN,
backward to STOP position.
8. Throttle trigger lockout Locks throttle trigger in the
idling position unti l you have a prope r grip with your rig ht
hand around the handle.
9. Throttle trigger Activated by the operator's finger for
controlling the engine speed.
10. Air cleaner cover Covers air filter.
11. Fuel tank cap For closing the fuel tank.
12. Fuel tank Contains fuel and fuel filter.
13. Starter handle Pull handle to start the engine.
14. Silencer cover Cover the si lencer not to ma ke operator
touch the hot surface of silencer.
15. Spark plug
16. Shoulder harness An adj ustable stra p to su spend un it.
17. Blade cover When tra nsporting the unit , use the appro-
priate metal blade cover.
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Before you start
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 dealer if anything is missing or broken.
Before you start
1. Engine and shaft tube
2. U-handle
3. Shield (for metal blade)
4. Shield (for nylon line cutting head)
5. Safety goggles (ANSI Z 87.1 compliant)
6. Caution tag
7. Shoulder harness
8. 3 cutter blade
9. Blade cover
10. Operator's manual
11. Locking tool
12. Socket wrench
13. L-wrench
Assembly
WARNING
Read the operator's manual carefully to ensure that you assemble the product correctly.
Using a product that has been incorrectly assembled could lead to an accident or serious injury.
U-handle version
U-handle assembly
1. Install handle assembling bracket (upper) (A) in handle assembling bracket (lower) (D) and fix handle by tightening
handle assembling bolt (8 mm) (B) lightly.
2. Adjust inclination of handle to adequ ate positio n (easy to operate) and tighten firmly handle assembling bolt.
C: Washer
9
Before you start
Installation of shield
1. Fit shield (A) to mount ing porti on of angle transmission an d
tighten 4 bolts (B).
Installing blade
WARNING
Wear heavy duty gloves when working with the trimmer blade.
When replacing the trimmer blade during a trimming task, ensure that the engine is switched off and that the blades
have stopped.
When turning the product over to replace the trimmer blade, ensure that the fuel tank cap is securely in place.
Do not attempt to fit the trimmer blade with one hand or without using the socket spanner. Fit the trimmer blade accurately using the supplied socket spanner and tighten firmly in position.
Do not use any tools other than the provided socket spanner to tighten the blade; a pneumatic or electric tool may
tighten the blade more than necessary and cause the nut or the output shaft to break.
If worn nut and cup for blade are used, there is a danger of blade getting loose. Replace them with new one.
Failure to do so could lead to an injury or serious accident, or cause a fire.
1. Inspect blades (C) bef ore inst allati on. Ch eck for s harpne ss.
Dull blades increase the risk of blade kickback reactions.Small cracks can develop into fractures resulting in a
piece of blade flying off during operation. Discard cracked
blades no matter how small the crack.
2. Securely tighten the blade retainer (B), blade, lower blade
retainer (D), cup (E), and nut (F) by hand.
3. Insert locking tool (G) into a hole l ocated on the right s ide of
angle transmission while forcing retainer spring to the left
side.
4. Insert locking too l furth er int o bla de reta iner f ixing slot (A) to
fix output shaft.
CAUTION
Fix output shaft securely using locking tool in order to
prevent it form rotating when blade is mounted. Otherwise, the blade fastening nut will not be tightened sufficiently.
5. Tighten the nut (turn anticlockwise) using a socket wrench
(H). Never fasten whi le app lying yo ur weight . Other wise the
thread of nut could be broken.
10
Before you start
Adjusting the balance
Adjusting the shoulder harness
WARNING
This product is designed to fit a wide variety of body sizes, but may not be adjustable for extremely tall persons. Do
not use the unit if your feet can reach the cutting attachment when the unit is attached to the harness.
IMPORTANT
A person's size can affect the balancing adjustment. Also the balancing procedure may not work with some units on some
persons. If the shoulder harness does not fit you or cannot be adjusted well, please ask your dealer for assistance.
The accompanying shoulder harness i s s uit able for people of
standard adult physique, who are 150 cm - 195 cm in height
and 60 cm - 140 cm in waist size.
Use a shoulder harness when provided or when recommend-
ed in this manual. Adjust both harness and the suspension
point (A) on the unit so the unit hangs with the cutting attachment a few centimetres above ground level (B).
The cutting attachment and shield should be level in all direc-
tions. Harness the unit on the right side as shown.
Balance tool for a level plane of cutting head rotation
Harness fastening procedure
1. Fit the waist pad on your hipbone and then click the waist
buckle in and pull the band to tighten the pad. It is recommended that the fitting position is just low er than your belt lo cation.
2. Click the chest buckle together with the shoulder and chest
band loosened.
3. Pull down the shoulder pad adjustment band to fasten on the
shoulder pad tightly and then snap the band on th e shoulder
pad.
4. Pull the side pad adjustment band to fasten the side pad
tightly and then snap the band on the side pad.
5. Click the fitting buckl e together a nd then pull the fitting band
down to fasten the le ft si de shoulder pad and side pad tightly.
6. Adjust the hang plate height just on the waist pad.
7. Adjust the leg pad height to comfortable height for the unit
operation.
NOTE
If you still feel too tight or too loose after the above adjust-
ment procedure, adjust the total length of the harness to fit
your body by adjusting the part of the star marks.
11
Before you start
NOTE
If you replace the band, attach it as shown in the illustration.
12
Before you start
13
Before you start
Preparing the fuel
DANGER
Do not fuel up while the engine is hot or in operation.
Do not smoke or hold a flame near when refuelling.
If you do so, the fuel could ignite and cause fire, leading to burns.
WARNING
Do not fill fuel tanks indoors. Always fill fuel tanks outdoors over bare ground. Do not refuel the product on the loading platform of a truck, or in other such places.
Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
Otherwise, fuel may get spewed.
Mop up any fuel that overflows or spills out due to overfilling.
Fuel spills can cause fire and burns when ignited.
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 dealer to have it repaired.
Any fuel leaks could cause fire.
Keep the refuelling tank in a shaded area away from fire.
Use an approved fuel container.
IMPORTANT
Fuel is a mixture of regular grade petrol and an air-cooled 2-strok e e ngine oil of reputable brand name. Minimum 89 O c tan e
unleaded petrol is recommended. Do not use fuel containing methyl alcohol or more than 10 % of ethyl alcohol.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days.
Fuel
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.
Fuel supply
Do not add so much fuel that it reaches the mouth of the fuel
tank (A). Keep the fuel within the prescribed level (up to the
shoulder level (B) of the fuel tank).
Tighten the fuel tank cap securely after refuelling.
14
Engine operation
Engine operation
Starting the engine
WARNING
Be particularly careful to observe the following precautions when starting the engine:
Move at least 3m from the place where you refueled.
Place the product in a flat, well ventilated place.
Check that there are no fuel leaks.
Inspect metal blades for cracks.
Check that none of the nuts and bolts are loose.
Leave plenty of space around the product and do not allow people or animals near it.
Start the engine with the throttle trigger in the idle speed 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.
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 dealer to have it repaired.
Accidents involving parts that fall or shatter off can cause wounds or serious injury.
The exhaust fumes from the engine contain toxic gases. Do not operate the product indoors or in other
ill ventilated places.
The exhaust fumes could cause poisoning.
Do not touch silencer, spark plug, angle transmission, and other high temperature components while
the product is running or for some time after it stops.
You could burn yourself if you touch a high temperature component.
Do not touch spark plug, spark plug wire, and other high voltage components while the product is running.
You could receive an electric shock if you touch a high voltage component while the product is running.
If the cutting attachment rotates even though the throttle trigger is in the idle speed position when the engine is started, adjust the carburettor before using the product.
Failure to observe the precautions could cause an accident or injury, or even lead to a fatality.
When starting engine using throttle latch, cutting attachment rotates. After engine starts, pull throttle trigger slightly
to release throttle latch immediately. Never use throttle latch for operation.
The rotating blade can cause injury.
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.
Starting a cold engine
(Connect the spark plug cap if the produ ct has bee n in storage for
a long period of time.)
1. Remove the blade co ver .
2. Placing the product on level ground, c heck to ensure that the
cutting attachment does not come into contact with the surface of the groun d or a ny other im pediment using a beam or
other such implement.
3. Move the ignition switch (A) to the Start position.
4. Make sure that the throttle trigger (D) is at the idle spe ed position.
15
Engine operation
5. Move the choke lever (F) to the "Cold Start" (E) position.
6. Alternately press and release the p urge bulb (H) until th e fuel
is sucked up into it.
7. Checking that the area aro und yo u is s afe, ho ld the posit ion
closest to the engine firmly as shown in the illustration, pulling several times on the starter grip (I).
8. If you hear an explosion-l ike sound and the engi ne stops im mediately, move the choke lever to the "Run" (G) position
and continue pulling on the starter grip to start the engine.
9. If the engine does not stop, return the choke lever gently to
the "Run" position.
10. Leave the engine to warm up at idle speed for a while.
∗ When eng ine is hard to s tart, use thro ttle lat ch (C). (Pull throt-
tle trigger fully and lower throttle latch while pressing throttle
trigger lockout (B) and relea se throttl e trigger to activa te throttle latch. After engine starts, pull throttle trigger slightly to release throttle latch immediately.)
Starting a warm engine
Stopping the engine
1. Move the ignition switch (A) to the Start position.
2. Make sure that the throttle trigger (D) is at the idle spe ed position.
3. Check that the choke lever is in the "Run" position.
4. If no fuel is visible in the purge bulb, alternately p ress and release the purge bulb until the fuel is sucked up into it.
5. Checking that the area aro und yo u is s afe, ho ld the posit ion
closest to the engine firmly, and pull on the starter grip to
start the engine.
1. Move the throttle trigger (B) to the idle speed position and set
the engine to idling (i.e. low speed).
2. Move the ignition switch (A) to the Stop position.
3. In the event of an emergency, stop the engine immediately
using the ignition switch.
4. If the engine fails t o stop, move t he chok e lev er to the " Cold
Start" position. The engine will stall and come to a halt (an
emergency stop).
∗ If the e ngine fails to stop w hen the ignition sw itch is used, have
the ignition switc h checked and rep aired by your de aler before
you use the product again.
5. Always disconnect the spark plug wire from the spark plug to
ensure the engine cann ot be st arted before y ou work on th e
unit or leave it unattended.
16
Trimming operation
Trimming operation
DANGER
Always stop the engine when a cutting attachment jam occurs.
Severe injury can occur if a jam is removed and the cutting attachment suddenly starts.
Do not operate the product without the shield in place.
Any objects that ricochet off the cutting attachment could cause an accident or serious injury.
The area within a 15 m radius of the product is a danger zone. Be careful to observe the following precautions while working with the product.
Do not allow children and other people or pets to enter the danger
zone.
If another person enters the danger zone, turn off the engine to stop
the cutting attachment from rotating.
When approaching the operator, signal to him by, for example,
throwing twigs from outside the danger zone, and then check that
engine has been switched off and the cutting attachment has
stopped turning.
If more than one person is working with the product, identify the way
in which you will signal to each other and work at least 15 m apart.
Any objects that ricoc het off the cutting at tac hm ent , an d any contact with the cu ttin g a ttac hm ent, could cause blin dne ss or a
fatal accident.
WARNING
Before starting work, check the area where you will be working and remove any small stones
and empty cans likely to ricochet off the cutting attachment, as well as any pieces of string
or wire that might become twisted around the cutting attachment.
An accident or serious injury can occur if f oreign objects ricoch et o ff the cutting attachme nt or wire
and other materials twisted round the product spring off it.
In the following situations, turn off the engine immediately and ensure that the cutting attachments have stopped
before checking each area of the product. Replace any damaged parts.
If the cutting attachment hits a rock, tree, post, or other such obstruction while you work.
If the product suddenly starts to vibrate abnormally.
Continuing to use parts when they are damaged could lead to an accident or serious injury.
Do not hold the cutting attachment up while you work. You must not work with the cutting attachments raised above
knee level.
Raising the cut ting a ttachm ent a bove knee lev el bri ngs t he pl ane o f rotat ion closer to the face, and any o bject s tha t fly off t he
cutting attachments could cause an accident or serious injury.
Transport of the product
When transporting in the situations described below, turn off the engine and ensure that the trimmer blade has
stopped rotating, then fit the trimmer blade cover and position the silencer away from yourself.
Moving to the place where you are working.
Moving to another area while you are working.
Leaving the place where you have been working.
Failure to observe these precautions could cause burns or serious injury.
When transporting the product by car, empty the fuel tank, fit the blade cover, and secure the product firmly in place
to prevent it from moving around.
Travelling by car with fuel in the fuel tank could lead to a fire.
Never attempt to operate the product with one hand.
Ensure that you hook your thumbs around the grips, wrapping them in your
thumb and remaining fingers.
17
Trimming operation
Using shoulder harness
Always mount the trimmer correctly using the shoulder harness.
Buckle waist belt. Belt should be snug.
Attach product to harness.
Place shoulder harness over both shoulders and adjust
straps so the connecting point latches as shown.
Check for correct adjust ment by moving cut ting attachme nt
along ground.
Re-adjust position of suspension point if necessary.
The shoulder harness is fitted with an emergency release
function. In the event of a fire or other emergency, pull the
quick release pin (A) up to release the product from your
body.
Basic trimming operation with nylon line cutting head
WARNING
Serious injury may result from the improper use of cutting attachment. Read and comply with all safety instructions
listed in this manual.
Use only cutting attachments recommended by YAMABIKO CORPORATION.
Excessive nylon line beyond cut off knife could fly off when the nylon line cutting head starts rotating after adjustment of nylon line length.
Failure to do so could lead to an accident or serious injury.
Trimming
Scything
This is feeding the trimmer caref ully into the mater ial you wish
to cut. Tilt the head sli ghtly to direct the d ebris away fr om you.
If cutting up to a barri er such as a fence , wall or tree, approach
from an angle where any debris rico che ting off the barrier wi ll
fly away from you.
Move the nylon line cutting head slowly until the grass is cut
right up to the barrier, but do not jam (overfeed) the line into
the barrier. If trimming up wire mesh or chain link fencing, be
careful to feed only u p to the wire. If y ou go too far, th e line will
snap off around the wir e.
Trimming can be done to cut through weed stems one at a
time. Place the nylon line cu ttin g hea d near the bottom of the
weed never high up, which could cause the weed to chatter
and catch the line. Rather tha n cut the weed right through , just
use the very end of the line to wear through the stem slowly.
1. Angle to wall
2. Debris
3. Knife side raised
4. Angle to ground
This is the cutting or mowing of large grassy areas by sweep-
ing or swinging the trimmer in a level arc. Use a smooth, easy
motion. Do not try to ha ck or c ho p d own th e g r ass. Tilt the nylon line cuttin g hea d to d irect the debris a way from you o n the
scything stroke. Then return wit hou t cutt ing gras s for an other
stroke. If you ar e well protected and do not ca re whether some
debris is thrown in your direction, you may scythe in both directions.
18
Scalping and edging
Trimming operation
Both of these are done with the nylon line cutting head tilted at
a steep angle. Sc alping (A) is remov ing top growth, leavi ng the
earth bare. Edging (B) is trimming the gra ss back where it has
spread over a pavem ent o r drive way. During both ed ging a nd
scalping, hold the unit at a steep angle in a position where the
debris, and any dislodged dirt and stone, will not come back
towards you even if it ricochets off the hard surface.
Although the pictures show how to edge and scalp, every op-
erator must find for himself the angles whi ch suit his b ody size
and cutting situation.
For nearly all cutting, it is good to tilt the nylon line cutting he ad
so that contact is m ade on th e part of li ne circle where th e line
is moving away from you and the shield (See appropriate picture). This results in the debris being thrown away from you.
Tilting the head to the wron g side wil l shoot the debris to ward
you. If the nylon line cutting head is held flat to the ground so
that cutting occurs on the whole line circle, debris will be
thrown at you, drag wil l slow th e engine, an d you will us e up a
lot of line.
Nylon line cutting head rotates ant iclockwise . The knife wi ll be
on the left side of the shield.
1. Debris
2. Cut on this side
Do not push the line into tough weeds, trees, or wire fences.
Pushing the line into chicken wire, chain link fencing or thick
brush can result in snapp ed-off lin e ends be ing hurled back at
the operator. The proper way is to cut right up to a barri er, such
as any of those mentioned, but never run the line into or
through the obstruction. Do not cut closely to obstruction or
barrier.
Avoid nylon line contact with broken wire fencing. Pieces of
wire broke n off by the trimmer can be hurled at high speeds.
19
Trimming operation
Basic trimming operation with metal blade
WARNING
Please observe the following instructions when trimming.
Check to ensure that the trimmer blade has been tightened securely in place.
Replace the shield if it is damaged or cracked.
Replace the trimmer blade nut when it becomes worn.
Do not cut into the ground with the blade.
Do not operate with a dull, bent, fractured or discoloured blade and worn or damaged nut.
Do not run engine at full throttle without a load.
Failure to do so could lead to an accident or serious injury.
Use only cutting attachments recommended by YAMABIKO CORPORATION.
The type of blade used must be matched to the type and size of material cut. An improper or dull blade can cause
serious personal injury. Blades must be sharp. Dull blades increase the chance of kick-out and injury to yourself and
bystanders.
Plastic/Nylon Grass/Weed Blades may be used where ever the nylon line head is used. Do not use this blade for
heavy weeds or brush.
The 3 cutter blade is designed especially to cut weeds and grass. To avoid injury due to kickback or blade fracture,
do not use the 3 cutter blade to cut brush or trees.
8 Tooth Weed/Grass Blade is designed for grass, garden debris and thick weeds. Do not use this blade for brush
or heavy woody growth, 19 mm diameter or larger.
22 Tooth Clearing Blade is designed for dense thickets and saplings up to 64 mm diameter.
80 Tooth Brush Blade is designed for cutting brush and woody growth up to 13 mm diameter.
Damaged or shattered blades can cause accidents and serious injury.
Kickback
The phenomenon that occurs if the trimmer blade comes into
contact with a tree, post, rock or other hard object while rotating at high speed and reacts by recoiling powerfully and
instantaneously is known as kickback.
Causing kickback can result in a loss of control over the
product and is highly dangerous.
In particular, if the front-right quadrant of the trimmer blade
(B) strikes a shrub or other such object, the trimmer blade
will cause the product to recoil sharply backwards to the
right.
To prevent kickback, do not trim from left to right. Be careful to ensure that the trimmer blade does not strike any
hard objects.
When trimming, ensure that the object you are cutting meets the portion of the blade 1/3 in from the front edge on
the left-hand side (A).
Failure to do so could cause an injury or fatal accident.
Scything weeds
This is cutting by swinging the cutting attachment in a level
arc. It can quickl y cle ar areas of fiel d gras s and w eeds . Scyth ing should not be used to cut large, tough weeds or woody
growths.
If a sapling or shrub binds the cutting attachment, do not use
the cutting attachm ent as a lever to free the bin d, because this
will cause cutting attachment failure.
Instead, shut off the engine and push the sapling or shrub to
free the blades.
20
Maintenance and care
Maintenance and care
WARNING
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 bur n yourself.
Remove the spark plug cap before performing checks and maintenance.
An accident could occur if the product starts unexpectedly.
IMPORTANT
Checking and mainten ance require s special ist knowled ge. If you are unabl e to check and maintain the pro duct or deal with a
fault yourself, consult your dealer. Do not attempt to dismantle the product.
Servicing guidelines
Area Maintenance Page Before use Monthly
Air filter Clean/Replace 21 •
Fuel filter Inspect/Clean/Replace 22 •
Spark plug Inspect/Clean/Adjust/Replace 23 •
Carburettor Adjust/Replace and adjust 22 •
Cooling system Inspect/Clean 22 •
Silencer Inspect/Tighten 23 •
Silencer Clean 23 •**
Drive shaft Grease 23 •**
Angle transmission Grease 24 •*
Starter Inspect - •
Cut off knife Inspect/Clean - •
Fuel system Inspect 22 •
Screws, bolts and nuts Inspect, Tighten/Replace - •
* Or 50 hours, whichever occurs first. ** Or 100 hours, whichever occurs first.
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 dealer.
Cleaning air filter
1. Close choke. Loosen screw and remove air cleaner co ver
(A).
2. Remove air filter (B) (air filter is located inside air cleaner
cover).
3. Brush dirt from filter or clean with compressed air.
4. Reinstall filter.
5. Reinstall cover and tighten screw.
21
Maintenance and care
Replacing fuel filter
1. Use a piece of metal wire or the like to pick up fuel filter (A)
through fuel tank opening.
2. Pull old filter from fuel line (B).
3. Install new fuel filter.
NOTE
If filter is excess ive dirty or no longer f its properl y, replac e it.
Carburettor adjustment
WARNING
YOU MAY ADJUST THE IDLE SPEED ONLY by turning the idle speed adjustment screw(T).
During carburettor adjustment, the cutting attachment may move. Pay utmost attention and care to the cutting attachment so as not to get injured by the moving cutter.
When carburettor adjustment is completed, the cutting attachment should not move at idle speed, otherwise serious
personal injury may result.
You must NOT carry out any Carburettor adjustment, other than the idle speed. All other adjustments MUST be performed by an authorized service dealer, or serious personal injury may result due to malfunction of the engine.
CAUTION
When there is trouble with the carburettor, contact an authorized service dealer.
Every unit is test run at the factory and the carburettor is fine
tuned for maximum performa nce.
Before adjusting carburettor, clean or replace air filter, start engine and run several minu tes to bring i t to operating temperature .
To adjust the carburettor proceed as follow:
Turn "idle" spe ed adj ustme nt sc rew (T) c lock wise un til c utting
atttachment begins to turn, then turn screw(T) out anticlockwise until cutting attachment stop s turning. Turn screw (T) out,
anticlockwise, and additional 1 turn.
NOTE
When the carburettor can not be adjust ed properly w ith the idle
speed adjustment screw (T), you must contact an authorized
service dealer.
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,
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 b lockages or cleanin g of cylin der fins is considere d "Norma l Maintena nce". Any resulta nt failure
attributed to lack of maintenance is not warranted.
22
Cleaning silencer
Maintenance and care
Keep dirt away from engine and air intake grid.
Air intake
Carbon deposits i n silencer (A) will ca use a drop i n engine ou t-
put and overheating. Clean deposits from silencer.
IMPORTANT
Do not remove the silenc er cover. If necessa ry, Please consul t
your dealer.
Check fuel system
Check spark plug
a:0.6‑0.7mm
Lubricating drive shaft
Check before every use.
After refuelling, make sure fuel does not leak or exude from
around fuel pipe (A), fuel grommet (B) or fuel tank cap (C).
In case of fuel leakage or exuda tio n, there is a danger of fire.
Stop using the machine im me dia tely and request your dealer
to inspect or replace.
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. If the electrodes or terminal s are worn, or if th ere are cracks
in the ceramics, replace them with new parts.
5. Tighten to 15 N·m - 17 N·m (150kgf·cm to 170 kgf·cm).
∗ The spark test (for checking whether the spark plug is spark-
ing) must be carried out by your dealer.
Inspect the drive shaft (A) every 100 hours of use and replenish
grease if it is insufficient.
NOTE
Use good quality lithium multi grease.
23
Maintenance and care
Angle transmission
Checking the blade
1. Remove the plug (A) and drain screw (B) from the angle
transmission (C).
2. Add grease into the tran sm is si on u nti l old grease is pushed
out. If necessary, use a low pressure pump.
NOTE
Use good quality lithium multi grease.
3. Reinstall the drain screw and plug.
Use only blade designa ted for this model by the ma nufacturer.
When a crack i s noticed o n the blade, do not use it but repla ce
with a new one.
Ensure that the blade is correctly fitt ed in acco rdance wi th the
instructions.
Installing nylon line cutter (option)
When the cutting blad e becomes dull due to wear re verse it for
further use.
When chip or bend occurs on the blade, vibratio n will increase.
Replace with new one.
When filing the blade file 3 cutting edges evenly using a flat file
as shown in the illu stration. Othe rwise, the bala nce will be los t
and vibration will increase.
There are two types of shields: namely the one used exclu-
sively for nylon lin e cutting head and the other on e used exclusively for metal blade. When u sing nylon line cutting head, use
the shield for nylon line cutting head.
1. Fully loosen the bolt (A) on the right side of the bracket (B)
to slide the shield . The bolt itself can not be removed from the
bracket.
2. Pushing the button (C), slid e the s hield (D) to th e left and re move it.
3. Put shield of other type (E) into groove an d slide it to the right
until it stops. Be sure to tighten the bolt.
Troubleshooting table
IMPORTANT
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.
24
Maintenance and care
Problem Diagnosis Cause Solution
The engine does
not start
Engine is difficult to
start, fluctuating rotation
Engine starts but
no acceleration is
possible
The engine stops 1. Carburettor adjustment problem
Fuel is entering the overflow
pipe
No fuel is entering the overflow pipe
The spark plug is dirty or
damp
1. There is no fuel in the fuel tank
2. The stop switch is in the Stop position
3. Excess fuel suction
4. Electrical fault
5. Carburettor malfunction or in ternal sti cking
6. Internal engine malfunction
1. Fuel degradation
2. Carburettor problem
1. Fuel filter is clogged
2. Fuel system is clogged
3. Internal carburettor part s sticki ng
1. Fuel degradation
2. Incorrect electrode gap
3. Carbon deposits
4. Electrical fault
1. Dirty air filter
2. Dirty fuel filter
3. Blocked fuel passage
4. Carburettor adjustment problem
5. Blocked exhaust vent or silencer vent
2. Electrical fault
1. Fuel supply
2. Move to the Start position
3. Start the engine after
servicing
4. Consult your dealer
5. Consult your dealer
6. Consult your dealer
1. Replace with new fuel
2. Consult your dealer
1. Clean or replace
2. Consult your dealer
3. Consult your dealer
1. Replace
2. Replace
3. Replace
4. Consult your dealer
1. Clean or replace
2. Clean or replace
3. Consult your dealer
4. Adjust
5. Clean
1. Adjust
2. Consult your dealer
The engine fails to
stop
Cutting attachment
rotates when the
engine is idling
Consult your dealer in the event of a problem that is not covered in the table above, or other such concerns.
Please contact your dealer in order to dispose of the product or its parts in compliance with national laws.
1. Stop switch malfunction 1. Perform an emergency stop and consult
your dealer
1. Carburettor adjustment problem
2. Damaged clutch spring
1. Adjust
2. Consult your dealer
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
25
Maintenance and care
Storage
Long-term storage (30 days or more)
WARNING
Do not store in sealed locations filled with fuel gas, or close to naked flames or sparks.
You could cause a fire.
When storing the p roduct for long periods of time (30 days or more ), ensure that th e following prep arations for sto rage are carried
out.
1. Remove any fuel from the fuel tank.
2. Alternately press and release the purge bulb a number of
times to remove the fuel from the purge bulb.
3. Start the engine and run it at idle speed until it comes to a
natural stop.
4. Move the ignition switch (A) to the Stop position.
5. Once the product is sufficiently cool, wipe clean any grease,
oil, dust, dirt and other materials on the outside of the trimmer.
6. Perform the periodic checks prescribed in this manual.
7. Check that the screws and nuts are tightened. Tighten up
any that ar e loose.
8. Remove the spark plug (B) an d add the approp riate quant ity
(around 10 mL) of clean, new 2-stroke engine oil to the cylinder via the installation socket.
9. Place a piece of clean cloth over the spark plug installation
socket.
10. Pull 2 or 3 times on the starter grip to distribute the eng ine oil
into the cylinder.
11. Observe the piston loca tion through the spark plug hole. Pu ll
the recoil starter handle slowly until the piston reaches the
top of its travel and leave it there.
12. Fit the spark plug. (Do not connect the spark plug cap (C).)
13. Fit the blade cover onto the trimmer blade and wrap the engine section in a pla stic bag or other c overing, and st ore in a
dry, dust-free location out of reach of chi ldren.
26
Specifications
Specifications
SRM-520ES
External dimensions:
Length × Width × Height 1835 × 705 × 560 mm
Mass:
Unit without fuel, cutting attachment and guard (ISO11806)
Unit with fuel, specified cutting attachment, guard and harness
Volume: Fuel tank 0.79 L
Cutting attachment:
Usable cutting depth of specified cutting attachment
Specified blade diameter
Specified blade thickness
Number of cutting teeth
Blade centre hole diameter
Blade rotational speed at maximum allowable engine speed
Gear ratio: Gear ratio and lubrication 1.33 reduction and good quality lithium grease
Rotational direction of output shaft seen from above: Anticlockwise
Engine:Type Air cooled two stroke, single cylinder
Engine displacement
Maximum shaft brake power, measured in accordance with ISO 8893
Engine speed at maximum engine power
Recommended maximum engine speed (With STD attachment installed)
Recommended engine idling speed
Carburettor
Ignition
Spark plug
Starter
Clutch
9.0 kg
11.7 kg
80 mm
255 mm
3.0 mm
3
25.4 mm
10000 r/min
3
50.2 mL (cm
)
2.16 kW
12000 r/min
9000 r/min
2800 r/min
Diaphragm type
Flywheel magneto - CDI system
NGK BPMR8Y
Recoil starter
Automatic centrifugal clutch
Fuel:
Oil
Ratio
Fuel consumption at maximum engine power
Specific fuel consumption at maximum engine power
Vibration levels: (ISO 22867)a
hv,eq
Sound pressure level: (ISO 22868) LpAeq
Uncertainty : (K
Guaranteed sound power level:(ISO 22868) L
pA
)
WA
These specifications are subject to change without notice.
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 Stan dar d
(ISO/CD 13738), JASO FC,FD g rade and ECHO Pre mium 50 : 1 oil.
50:1 (2%)
1.23 L/h
423 g/(kW•h)
Right handle 3.4 m/s
Left handle 3.2 m/s
Uncertainty 0.8 m/s
2
2
2
97.7 dB(A)
0.8 dB(A)
115 dB(A)
27
Declaration of conformity
The undersigned manufacturer:
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME
OHME; TOKYO 198-8760
JAPAN
declares that the hereunder specified new unit:
GRASS-TRIMMER/BRUSHCUTTER
Brand: ECHO
Type: SRM-520ES
complies with:
* the requirements of Directive 2006/42/EC (use of harmonized standard EN ISO 11806-1)
* the requirements of Directive 2004/108/EC (use of harmonized standard EN ISO 14982)
Declaration of conformity
* the requirements of Directive 2010/26/EU
* the requirements of Directive 2000/14/EC
Conformity assessment procedure followed ANNEX V
SRM-520ES
Measured sound power level dB(A) 112
Guaranteed sound power level dB(A) 115
Serial Number 37001001 and up
Tokyo, April 1st 2014
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, UK
Masayuki Kimura Mr. Philip Wicks
General Manager
28
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