Echo SRM-22GES User manual

WARNING
READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
OPERATOR’S MANUAL
GRASS TRIMMER/
BRUSHCUTTER
SRM-22GES

2
SRM-22GES
INTRODUCTION
ECHO Grass Trimmers/Brushcutters are lightweight, high-
performance, petrol engined units designed for weed
control, grass trimming and light brush cutting in areas
difficult to control by any other means.
Do not use this unit for any purpose other than
aforementioned.
This Manual provides the information necessary for
assembly, operation and maintenance. You must read this
Manual to understand the safe and effective operation of
your ECHO product.
CONTENTS
Introduction ................................................................ 2
Decals and symbols ................................................... 3
Rules for safe operation ............................................. 4
Description ................................................................. 11
Assembling ................................................................ 12
Fuel ............................................................................ 15
Operation ................................................................... 16
Maintenance and care ............................................... 17
Trouble shooting ........................................................ 20
Storage ...................................................................... 21
Specifications ............................................................. 22
Feature of this model: “ES” START
“ES” START generates enough revolving power to rotate
crankshaft up to a speed to ignite the engine and bring
almost no kickback.
“ES” START makes engine start far easier than you ever
expect.

3SRM-22GES
DECALS AND SYMBOLS
Carefully read the operator’s
manual
Wear eyes, ears and head
protection
Carburettor adjustment
- Low speed mixture
Purge bulb (Primer)
Petrol and oil mixture
Warning, side thrust
The maximum speed of the
cutting attachment shaft in r/min
Carburettor adjustment
- High speed mixture
Symbol form/shape Symbol description/application Symbol form/shape Symbol description/application
Emergency stop
Keep bystanders away 15 m
Usage without shield not
permitted
Carburettor adjustment
- Idle speed
Warning!
Thrown objects!
Wear foot protection and gloves
Locate this safety decal on your unit. The complete unit
illustration found in the “DESCRIPTION” section will help
you locate them.
Part Number 890617-43130
Make sure the decal is legible and that you understand and
follow the instructions on it. If a decal cannot be read, a new
one can be ordered from your ECHO dealer.
Usage of metal blades not
permitted
DANGER
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.
WARNING
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
“CAUTION” indicates a potentially hazardous
situation which, if not avoided, may result in minor or
moderate injury.
Circle and slash symbol means whatever
is shown is prohibited.
NOTE
This enclosed message provides tips for use, care
and maintenance of the unit.

4
SRM-22GES
Operator’s manual
Do not permit operation without
proper training and protective
equipment.
Wear eye protection
PROTECTIVE CLOTHING
Choose trousers, shirts and jackets that fit trimly and have
no strings, frills or dangling straps which could catch on the
unit or the underbrush. Do not wear ties, loose clothing or
jewellery. Keep clothing buttoned or zipped up and shirt
tails tucked in. Secure hair so it is above shoulder length.
The wearing of gloves offers some protection against
contact with skin irritants such as poison ivy. Soft leather
work gloves may also improve your grip.
TRAINING
Read the Operator’s Manual carefully. Be thoroughly
familiar with the controls and proper use of the unit.
Know how to stop the unit and shut off the engine.
Never allow anyone to use the unit without proper
instruction.
• If you have any questions or problems, please contact
your ECHO dealer.
HEARING AND EAR PROTECTION
Prolonged exposure to loud noise can cause impairment
or loss of hearing.
Wear a suitable hearing protective device such as earmuffs
or earplugs to protect against objectionable or
uncomfortable loud noises.
EYE PROTECTION
The operator must wear eye protection not only against
objects thrown by the unit, but also because eye infections
can be caused by airborne dust, seeds and pollen.
Prescription glasses may be worn under the safety goggles.
Eye protection should also be worn by persons in the risk
zone which extends beyond the danger zone.
WARNING
GRASS TRIMMERS AND BRUSHCUTTERS CAN
THROW SMALL GRAVEL, STONE, GLASS, METAL
OR PLASTIC OBJECTS AS WELL AS THE
MATERIAL BEING CUT. READ THESE “RULES
FOR SAFE OPERATION” WITH CARE. FOLLOW
INSTRUCTIONS IN THE OPERATOR’S MANUAL.
RULES FOR SAFE OPERATION
EarplugsEarmuffs

5SRM-22GES
WARNING
IN ADDITION TO HEAD, EYE AND EAR PROTEC-
TION WEAR PROTECTIVE CLOTHES, SAFETY
GLOVES AND SHOES TO PROTECT YOUR FEET
AND BODY FROM THROWN OBJECTS, AND
IMPROVE YOUR FOOTING ON SLIPPERY
SURFACES. 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.
FUEL
It is highly flammable.
a) Use an appropriate type of fuel container.
b) Do not smoke or bring flame or sparks near to fuel
supplies.
c) The fuel tank may be under pressure. Always loosen the
fuel cap and wait for pressure to be equalized before
removing the cap.
d) Fill the fuel tank outdoors over bare ground and install
the fuel cap securely. Do not pour fuel indoors.
e) Wipe any spilled fuel off the unit. Then move at least 3
m from the fuelling spot before starting the engine.
f) Never refuel while the engine is still hot, or fuel a running
engine.
g) Do not store the unit with fuel in its tank, because a fuel
leak could start a fire.
Do not start engine near fuelling spot
PHYSICAL CONDITION
You should be in good mental and physical health. Do not
operate if you are under the influence of alcohol or any
medication or substance which could affect your vision,
dexterity or judgement.
ADDITIONAL PROTECTION
Hay fever (Rhinitis) sufferers may wear disposable masks
to help reduce the intake of allergenic particles.
Safety gloves
Safety goggles
Hearing protectors Head and face
protection
Trim-fitting
clothes
Long trousers
Sturdy shoes
or boots

6
SRM-22GES
WARNING
• IMPROPER FIT WILL RESULT FLY OFF THE
CUTTING ATTACHMENT.
• NEVER START THE ENGINE IF THE POWER
TRANSMISSION SHAFT IS NOT IN PLACE TO
PREVENT THE ENGINE FROM OVER SPEEDING
OR THE CLUTCH FROM FLYING APART.
Lay the unit down on a clear area and set the controls for
starting. Be sure the cutting attachment cannot contact the
ground or any obstruction.
Hold the unit firmly down so you will not lose control during
starting. Do not start the unit in the air. The unit could swing
into your leg or an obstruction if you lose control.
GENERAL OPERATION
Do not run the engine indoors, or where there is poor
ventilation. Engine fumes contain deadly poisonous carbon
monoxide.
Do not operate with a worn or damaged cutting attachment.
Do not run engine at full throttle without a load.
Do not hit rocks, stones, tree stumps, and other foreign
objects with the cutting attachment.
If cutting attachment strikes an obstruction, stop engine
immediately and inspect cutting attachment for damage.
Start on ground with cutting
attachment in the clear
Indoor
operation
Be sure that :
a) Engine does not leak fuel.
b) Fasteners are tight, and none are missing.
c) Silencer is in good condition.
d) The unit has the proper equipment-shield, handles,
etc.-for the cutting attachment to be used.
e) If used on the unit, the cutting attachment is properly
tightened.
AREA AND EQUIPMENT INSPECTION
Inspect the area before using the unit. Remove objects the
unit could throw. Remember where there are obstructions
to be avoided.
Inspect the unit before using it. Perform only maintenance
or adjustments for which the operator’s Manual gives
instruction. Do not try to repair the unit without proper
instruction. The unit should be serviced only by trained
ECHO dealer servicemen with the proper tools.

7SRM-22GES
Do not raise the cutting attachment above knee height. If
raised higher, the cutting attachment will be more directly
in line with your face. Thrown objects may hit your face and
eyes.
Wear the recommended protective gear.
Never operate the unit without the proper guards and other
protective devices.
Never operate the unit without good visibility and light.
Do not allow anyone to enter the operating DANGER
ZONE with you. The danger zone is an area of 15 m in
radius.
Insist that persons in the RISK ZONE beyond the danger
zone wear eye protection to protect them from thrown
objects. If the unit must be used where there are unprotected
people, operate at a low throttle speed to reduce the risk.
Ensure that there are no children, bystanders, and pets in
the work area. Keep all children, bystanders and fellow
workers outside 15 m radius for grasstrimmers.
15 m
Stop the engine before leaving the machine, children are
not allowed to use the machine with metal tools, stop the
machine between different working places.
If you are approached, stop the engine and cutting
attachment immediately. Keep your hands and body away
from silencer to prevent heat injury while the engine is hot.
Sudden vibration?
Shut down immediately!
WARNING
EYE PROTECTION SHOULD BE CONSIDERED
FOR EVERYONE IN THE ZONE OF RISK. RISK OF
EYE INJURY DIMINISHES WITH DISTANCE.
Shut down immediately if the unit starts to shake or vibrate.
A sudden vibration is a sign there may be dangerous
trouble, such as a broken flywheel, clutch or cutting
attachment, or loose parts.
Do not use the unit until the problem has been properly
diagnosed and corrected.
Keep feet and hands
away until rotation stops
When the unit is turned off, make sure the cutting attachment
stops before the unit is set down.
A cutting attachment can injure while it continues to spin
after the engine is shut off or throttle control is released.
If the cutting attachment rotates after throttle is returned to
idle, carburettor adjustment is required. Follow instruction
on this manual to make the adjustment yourself, or have
the carburettor adjusted by your ECHO dealer.
All maintenance and adjustments given in this manual
should be performed by you or your ECHO servicing dealer
on a timely basis.
All required service or repair must be done only by ECHO
servicing dealer. Never attempt to use an incomplete or
one fitted with unauthorized modification.

8
SRM-22GES
VIBRATION AND COLD
It is believed that a condition called Raynaud’s Phenom-
enon 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, consult
your physician before exposing yourself further to cold
and vibration.
Painful or numb
fingers?
See your doctor
immediatelty!
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.
Always use both hands on the handles. Do not operate
one-handed.
Always hold the unit with the fingers and thumbs encircling
the handles.
Do not operate one-handed

9SRM-22GES
Trimming
Angle to wall Move the line 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 to wire mesh or chain link fencing, be
careful to feed only up to the wire. If you go too far, the line
will snap off around the wire.
Trimming can be done to cut through weed stems one at a
time. Place the nylon line cutter near the bottom of the
weed never high up, which could cause the weed to chatter
and catch the line. Rather than cut the weed right through,
just use the very end of the line to wear through the stem
slowly.
TRIMMING : This is feeding the trimmer carefully into the
material you wish to cut. Tilt the head slightly to direct the
debris away from you. If cutting up to a barrier such as a
fence, wall or tree, approach from an angle where any
debris ricocheting off the barrier will fly away from you.
The basic cutting actions pictured are:
Trimming, scything, scalping and lawn edging.
These actions are as follows:
Edging
Scalping
Tilting the head to the wrong side will shoot the debris
toward you. If the nylon line cutter is held flat to the ground
so that cutting occurs on the whole line circle, debris will be
thrown at you, drag will slow the engine, and you will use
up a lot of line.
WARNING
USE ONLY FLEXIBLE, NON-METALLIC LINE
RECOMMENDED BY KIORITZ CORPORATION.
Nylon line head rotates
anticlockwise.
The knife will be on the left
side of the shield.
For nearly all cutting, it is good to tilt the nylon cutter so that
contact is made on the part of line circle where the line is
moving away from you and the guard (See appropriate
picture.) This results in the debris being thrown away from
you.
SCYTHING : This is the cutting or mowing of large grassy
areas by sweeping or swinging the trimmer in a level arc.
Use a smooth, easy motion. Do not try to hack or chop
down the grass. Tilt the line head to direct the debris away
from you on the scything stroke. Then return without
cutting grass for another stroke. If you are well protected
and do not care whether some debris is thrown in your
direction, you may scythe in both directions.
Scything
SCALPING and EDGING : Both of these are done with the
line head tilted at a steep angle. Scalping is removing top
growth, leaving the earth bare. Edging is trimming the
grass back where it has spread over a pavement or
driveway. During both edging and 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
operator must find for himself the angles which suit his
body size and cutting situation.
Angle to ground
Knife side raised
Debris
Cut on
this side
Debris

10
SRM-22GES
USE CORRECT CUTTING ATTACHMENT
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 KIORITZ CORPORATION.
WARNING
DO NOT TRIM IN ANY AREA WHERE THERE ARE
BROKEN STRANDS OF FENCING WIRE. REMOVE
THE BROKEN PIECES OF WIRE, OR GIVE THE
AREA WIDE BERTH. WEAR PROPER SAFETY
PROTECTION. DO NOT CUT WHERE YOU
CANNOT SEE WHAT THE CUTTING DEVICE IS
CUTTING.
DANGER
ALWAYS STOP THE ENGINE WHEN A CUTTING
ATTACHMENT JAM OCCURS. DO NOT ATTEMPT
TO REMOVE AN OBJECT CAUSING A JAM IF THE
ENGINE IS RUNNING. INJURY CAN OCCUR IF A
JAM IS REMOVED AND THE CUTTING
ATTACHMENT SUDDENLY STARTS.
WARNING
USE EXTREME CAUTION WHEN OPERATING
OVER BARE SPOTS AND GRAVEL, BECAUSE
THE LINE CAN THROW SMALL ROCK PARTICLES
AT HIGH SPEEDS. THE SHIELD ON THE UNIT
CANNOT STOP OBJECTS WHICH BOUNCE OR
RICOCHET OFF HARD SURFACES.
Do not trim near
cars or pedestrians.
Always wear proper eye protection against thrown objects.
Objects can bounce up at you from the ground under the
shield, or ricochet off any nearby hard surface.
Do not trim at high speed near roadways when there is
traffic, or in places where there are pedestrians. If you must
trim where people are in the zone of risk use a much lower
or reduced speed, by using a partial trigger setting. Do not
use full throttle.
Line pushed into wire
fencing will snap off.
Avoid wire
Avoid nylon line contact with broken wire fencing. Pieces
of wire broken off by the trimmer can be hurled at high
speeds.
G138
WARNING
EXCESSIVE NYLON LINE BEYOND CUT OFF
KNIFE COULD FLY OFF WHEN THE NYLON LINE
CUTTER STARTS ROTATING AFTER
ADJUSTMENT OF NYLON LINE LENGTH.
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 snapped-off line ends
being hurled back at the operator. The proper way is to cut
right up to a barrier, such as any of those mentioned, but
never run the line into or through the obstruction. Do not cut
closely to obstruction or barrier.
WARNING
USE ONLY NYLON LINE. DO NOT USE ANY TYPE
OF METAL BLADE.

11 SRM-22GES
DESCRIPTION
1OPERATOR’S MANUAL Included with unit. Read
before operation and keep for future reference to learn
proper, safe operating techniques.
2ANGLE TRANSMISSION Having two gears to change
the angle of rotating axis.
3CUTTING ATTACHMENT Nylon line head for cutting
grass and weed.
4SHIELD Device to protect the operator from accidental
contact with the cutting head and thrown objects.
5CUT OFF KNIFE Cut nylon line to adjust line length to
proper swath.
6SHAFT TUBE Part of the unit that provides a casing for
power transmission shaft.
7FRONT (LOOP) HANDLE Light weight, suitable for
Nylon line trimmer only.
8IGNITION SWITCH ”Slide Switch” mounted on top of
the Throttle Trigger Housing, move switch forward to
RUN, backward to STOP position.
9THROTTLE TRIGGER Activated by the operator’s
finger for controlling the engine speed.
10 THROTTLE TRIGGER LOCKOUT Locks throttle trigger
in the idling position until you have a proper grip with
your right hand around the handle.
11 GRIP Rear (right hand) handle.
12 AIR CLEANER COVER Covers air filter.
13 FUEL TANK Contains fuel and fuel filter.
14 FUEL TANK CAP For closing the fuel tank.
15 STARTER HANDLE Pull handle to start the engine.
(“ES” START)
16 SILENCER COVER Cover the silencer not to make
operator touch to hot surface of silencer.
17 SPARK PLUG
18 SAFETY DECAL Part Number 8910617-43130
2
3
4
5
6
7
8
9
10 11
18
12
16
17
15
14
13
1

12
SRM-22GES
ASSEMBLING
FRONT (LOOP) HANDLE INSTALLATION
• Position handle in comfortable operating position and
tighten screws (M5×35).
Front (loop) handleScrew M5×35
WARNING
CUT OFF KNIFE ON DEBRIS SHIELD HAS SHARP
EDGES. AVOID CONTACT WHEN INSTALLING OR
REMOVING LINE HEAD.
PLASTIC SHIELD INSTALLATION
(For Nylon Line Operation)
NOTE
The plastic shield is for use with the Nylon Line Head
only. Install Metal Shield when using plastic or metal
blades.
1. Remove plastic sleeve from output shaft.
2. Install the shield on the bottom of the bearing housing
flange.
3. Place shield plate on shield, align holes and install three
screws (M5×16).
NYLON LINE HEAD INSTALLATION
(Use with Plastic Shield)
1. Be sure upper adapter plate remains on output shaft.
2. Align locking hole in upper plate with notch in edge of
gear housing and insert head locking tool.
3. Thread line head onto shaft by turning it anticlockwise
until head is tight against upper plate.
4. Remove head locking tool.
Screw M5×16
Shield plate
Cut off knife
Shield
Plastic sleeve
Locking tool
Nylon line head
Output shaft
Upper plate
CAUTION
Fasten output shaft using locking tool securely in
order to avoid the possibility of output shaft
rotating when mounting nylon line head.

13 SRM-22GES
ADJUSTING NYLON LINE
• Make sure there is no bystander within 15 m radius and
pay enough attention to objects in the surroundings
before starting operation.
• Do not rotate the cutting head at more than 10,000
r/mim.
• Do not hit the cutting head against hard foreign matters
such as rocks, concrete, tree stub and bottle etc.
• When releasing Nylon line from spool hit tap knob of
spool against the ground surface lightly at rotation speed
lower than 4,500 r/min.
• Cut off knife on the shield adjusts cutting swath to 40 cm
automatically by cutting nylon lines evenly when
attachment starts rotating.
• When operating with less than maximum cutting swath
(40 cm), cut two nylon lines in equal lengths.
Tap knob
Nylon line comes out
Hit knob against the
ground surface lightly
NYLON LINE HEAD
Type : G138
Thread : Left-hand thread M 10 ×1.25 pitch
CAUTION
Use only flexible, non-metallic line recommended
by KIORITZ CORPORATION.
G138

14
SRM-22GES
2
3
45
(4) (5)
6
REPLACING NYLON LINE
Spool
1. Intermediate separator
2. Bent portion
3. Notch Nylon line
4. Winding direction for the line
5. If wound unfirmly, the line loosens.
6. Wind firmly into respective groove.
DANGER
SHUT DOWN TRIMMER ENGINE WITHOUT FAIL
AND MAKE SURE CUTTING HEAD HAS STOPPED
ROTATING BEFORE STARTING REPLACEMENT
PROCEDURE.
(8)Pull out the line from housing.
(A) Remove the line from “respective notch of spool”
and (B) pass it through “groove of respective eyelet”.
DANGER
MAKE SURE EACH OUTER PERIPHERY OF
PAWLS OF HOUSING SPREADS ALMOST FULLY
UP TO THE OUTER PERIPHERY OF RESPECTIVE
WINDOW OF COVER.
IF THEY ARE LOOSELY FITTED AND THE
CUTTING HEAD IS TURNED, COVER OR INSIDE
COMPONENTS CAN FLY OFF WHICH IS
DANGEROUS.
(8)
(A)
(B)
(C)
(D)
(9)
(9)Fit cover and housing together.
(C) Align “eyelets” of cover with “recesses” of housing,
and (D) press pawls of housing into respective window
of cover until the pawls are firmly fitted into the windows.
(6)When the line is wound to the end hook both line ends
into respective notch of spool for retaining tentatively
the line while leaving line ends approximately 10 cm
beyond notch.
(7)Align notches of spool for the line with grooves of
eyelets and fit spool into housing.
(6)
(7)
(1)Press “retaining pawls” (at two places) inward and lift
cover to remove it.
It is easier to remove one after another.
(2)Remove spool.
(3)When Nylon line on the spool is almost exhausted,
remove remaining line from spool and wind “new line”
according to the procedures (4) and beyond.
When the line on the spool is “melted and stuck” remove
the entire line while peeling off the “melted and stuck”
portion and wind the “ removed line” anew according to
procedures (4) and beyond.
(4)Bend the line at the point 10 cm away from the middle
of whole length and hook the bent portion into the
“notch” of the intermediate separator.
(5)Wind the line firmly into groove of the spool following
“winding direction for the line L”.
Housing
(3)
(1)
(2)
Cover
10 cm
1

15 SRM-22GES
FUEL
FUEL
• 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 grade and ECHO
Premium 50 : 1.
- 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.
NOTE
Stored fuel ages. Do not mix more fuel than you
expect to use in thirty (30) days. Do not mix directly in
fuel tank.
HANDLING FUEL
Shoulder level
Fuel tank
DANGER
AFTER REFUELLING, TIGHTEN FUEL CAP
FIRMLY AND CHECK FOR LEAKAGE. IN CASE OF
FUEL LEAKAGE, REPAIR BEFORE STARTING
OPERATION SINCE THERE IS A DANGER OF
FIRE.
• Never smoke or allow flame or sparks near fuel.
• Always fill the fuel tank outdoors. Never pour fuel indoors.
• Always remove the fuel cap slowly to relieve any pressure
buildup in the tank.
• Never refuel the engine when it is hot or running.
• Always use an approved, safe fuel container.
• It is not permitted to fill fuel above the shoulder level of
fuel tank.
• After fuelling, always wipe away spilled fuel.
• Always move at least 3 m away from the fuelling spot
before starting the engine.
• Never store the unit with fuel in the tank a fuel leak could
start a fire.

16
SRM-22GES
WARNING
• WHEN ENGINE STARTS, THE CUTTING
ATTACHMENT MAY ROTATE, EVEN WITH
THROTTLE TRIGGER IN LOW-SPEED POSI-
TION.
• WHEN ENGINE IS STARTED, CONFIRM IF
THERE IS NOT ANY ABNORMAL VIBRATION
OR SOUND. IF THERE IS ABNORMAL
VIBRATION OR SOUND, ASK YOUR DEALER
TO REPAIR.
OPERATION
Ignition switchSTART STARTING COLD ENGINE
Feature of this model: “ES” START
“ES” START generates enough revolving power to rotate
crankshaft up to a speed to ignite the engine and bring
almost no kickback.
“ES” START makes engine start far easier than you ever
expect.
• Before starting engine make sure cutting attachment is
not in touch with ground or other objects.
• Place ignition switch in “START” position.
• Push purge bulb until fuel is visible in clear fuel return
line.
• Move choke lever to CLOSE position.
• Pull starter handle until first firing sound.
• Open choke.
• Restart engine and allow to warm up.
STARTING WARM ENGINE
• Place ignition switch in “START” position.
• Move choke lever to OPEN position.
• If tank is not empty, pull starter handle.
• If fuel tank is empty, after refilling, push the purge bulb
(until fuel is visible in clear fuel return line). Pull starter
handle.
Choke lever
CLOSE
NOTE
If engine does not start after 4 pulls, use Cold
Starting Procedure.
STOPPING ENGINE
• Release throttle trigger and allow engine to idle.
• Place ignition switch in “STOP” position.
Throttle trigger
lockout
Throttle trigger
Spark plug wire Spark plug
Always disconnect the spark plug wire from the spark plug
to ensure the engine cannot be started before you work on
the unit or leave it unattended.
WARNING
IF ENGINE DOES NOT STOP, CLOSE CHOKE TO
STALL ENGINE. HAVE YOUR ECHO DEALER
INSPECT AND REPAIR IGNITION SWITCH
BEFORE USING THE UNIT.
NOTE
• Check unit for loose nuts, bolts and screws before
starting.
• Always clear work area of debris before starting
operation.
• Always hold the unit firmly on the ground.
• When pulling starter handle, use short pulls, 1/2 to
2/3 of rope length.
• Do not allow the starter handle to snap back
against the housing.
Starter handle
Fuel return line
Ignition switch
Throttle trigger lockout
Throttle trigger
OPEN
Purge bulb

17 SRM-22GES
IDLE SPEED ADJUSTMENT
Turn idle speed adjuster clockwise until cutting attachment
begins to turn, then turn screw out anticlockwise until
cutting attachment stops turning. Turn screw out,
anticlockwise, and additional 1 turn.
CARBURETTOR ADJUSTMENT
Every unit is test run at the factory and the carburettor is
fine tuned for maximum performance. Any change from
this setting should be performed only with the aid of an
accurate tachometer (see Specification for r/min setting).
If carburettor adjustment is performed without a tachometer,
only the Basic Setting adjustment is recommended.
Before adjusting carburettor, clean or replace air filter, start
engine and run several minutes to bring it to operating
temperature.
MAINTENANCE AND CARE
CLEANING AIR FILTER
• Close choke and remove air cleaner cover.
• Remove air filter (air filter is located inside air cleaner
cover).
• Brush dirt from filter or wash it in a suitable cleaner.
• Reinstall air filter and cover.
NOTE
If filter is excessive dirty or no longer fits properly,
replace it.
REPLACING FUEL FILTER
• Use a piece of steel wire or the like to pick up fuel filter
through fuel tank opening.
• Pull old filter from fuel line.
• Install new fuel filter.
Fuel filter
• If you have any questions or problems, please contact
your ECHO dealer.
Air filter
T : Idle speed adjuster
CAUTION
Cutting attachment must not turn when unit is
idling.
Air cleaner cover
CHECK FUEL SYSTEM
• Check before every use.
• After refuelling, make sure fuel does not leak or exude
from around fuel pipe, fuel grommet or fuel tank cap.
• In case of fuel leakage or exudation there is a danger of
fire. Stop using the machine immediately and request
your dealer to inspect or replace.
Fuel line

18
SRM-22GES
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.
• Remove dust and dirt from between fins.
• Before each use, remove accumulated debris from bottom
engine intake grille located between the fuel tank and
starter.
CHECK SPARK PLUG
• Check plug gap. Correct gap is 0.6 to 0.7 mm.
• Inspect electrode for wear.
• Inspect insulator for oil or other deposits.
• Replace plug if needed and tighten to 15 - 17 N•m (150
to 170 kgf•cm).
0.6 to 0.7 mm
CLEANING SILENCER
• Clean deposits from silencer and tighten two bolts.
Two bolts
Silencer cover
Silencer
ANGLE TRANSMISSION
• Remove plug from angle transmission.
• Add grease, if necessary, using low pressure pump.
• Reinstall plug.
NOTE
Use good quality lithium multi grease. DO NOT
overfill housing.
Angle transmission
Plug (Bolt)
Grease tube
Air intake
Cylinder fins
Hexagonal
wrench

19 SRM-22GES
CHECKING THE NYLON LINE HEAD
(1)Make sure each periphery of the 2 retaining pawls of
housing spreads almost fully up to the outer periphery
of the respective cover window.
(2)Check mount of cutting head on trimmer and tighten if it
is loose.
(3)Check the cutter head for deflection or abnormal noise
rotating it by hand.
Deflection or abnormal noise can cause abnormal
vibration to occur or mount to trimmer to loosen during
rotation which is dangerous.
(4)Inspect cover and tap knob for wear.
Before the slot of cover disappears that serves as a
mark to indicate, when worn out, end of useful life or
when slot appears on bottom of the tap knob, replace
them with new parts without fail.
(5)Check the cutting head for crack or chip.
Replace parts that show any crack or chip with new
ones without fail.
LUBRICATING DRIVE SHAFT
(FLEXIBLE SHAFT)
1. Loosen two screws and remove center locating screw.
Pull gear box and shield from shaft tube.
2. Pull flexible shaft from the shaft tube, wipe clean and
recoat with a thin coating 10 to 20 g, of lithium base
grease.
3. Slide the flexible shaft back in the shaft tube. DO NOT
get dirt on the flexible shaft.
4. Install the gear housing and shield assembly.
IMPORTANT
Flat edge of washers must be against drive shaft.
SERVICING GUIDE
IMPORTANT
Time intervals are maximum. Actual use and your experience will determine the frequency of required
maintenance.
* Or 50 hours, whichever occurs first.
AREA MAINTENANCE PAGE BEFORE USE MONTHLY
Air Filter Clean/Replace 17 •
Fuel Filter Inspect/Clean/Replace 17 •
Spark Plug Inspect/Clean/Adjust/Replace 18 •
Carburettor Adjust/Replace and adjust 17 •
Cooling System Inspect/Clean 18 •
Silencer Inspect/Tighten/Clean 18 •
Angle Transmission Grease 18 •*
Drive Shaft Grease 19 •*
Starter Inspect - •
Cut off Knife Inspect/Clean - •
Fuel System Inspect 17 •
Screws, Bolts and Nuts Inspect, Tighten/Replace - •
Shaft tube
Flexible shaft
Screws
Washer
Washer
Shield
(1) (3)
(5)

20
SRM-22GES
Trouble
Engine - hard to start
- does not start
Engine Fuel at No fuel • Fuel filter clogged • Clean or replace
cranks carburettor at carburettor • Fuel line clogged • Clean
• Carburettor • Ask your ECHO dealer
Fuel at No fuel at • Carburettor • Ask your ECHO dealer
cylinder cylinder
Silencer wet • Fuel mixture is too rich • Open choke
with fuel • Clean/replace air filter
• Adjust carburettor
• Ask your ECHO dealer
Spark at No spark at • Ignition switch off • Turn switch on
end of end of plug • Electrical problem • Ask your ECHO dealer
plug wire wire
Spark at No spark at • Spark gap incorrect • Adjust 0.6 to 0.7 mm
plug plug • Covered with carbon • Clean or replace
• Fouled with fuel • Clean or replace
• Spark plug defective • Replace plug
Engine • Internal engine problem • Ask your ECHO dealer
does not
crank
Engine Dies or • Air filter dirty • Clean or replace
runs accelerates poorly • Fuel filter dirty • Clean or replace
• Fuel vent plugged • Clean
• Spark plug • Clean and adjust/replace
• Carburettor • Adjust
• Cooling system plugged • Clean
• Exhaust port/silencer • Clean
plugged
TROUBLE SHOOTING
Cause Remedy
WARNING
• ALL TRIMMER SERVICE OPERATIONS, OTHER THAN ITEMS LISTED IN THE OPERATOR’S MANUAL,
SHOULD BE PERFORMED BY COMPETENT SERVICE PERSONNEL.
• FUEL VAPORS ARE EXTREMELY FLAMMABLE AND MAY CAUSE FIRE AND/OR EXPLOSION. NEVER
TEST FOR IGNITION SPARK BY GROUNDING SPARK PLUG NEAR CYLINDER PLUG HOLE,
OTHERWISE SERIOUS PERSONAL INJURY MAY RESULT.
NOTE
“ES” START
When starter grip cannot be pulled lightly, the trouble is diagnosed as failure of engine inside. Please consult your
dealer. If disassembled inadvertently, it can cause injury.