Echo SRM-231U User manual

Grass Trimmer/Brush Cutter
Operator'sManual
MODEL SRM - 231U
WARNING DANGER
Readrulesforsafeoperationandinstructionscarefully. ECHOprovidesan
Operator'sManualandaSafetyManual. Bothmustbereadandunderstoodfor
properandsafeoperation.
X7502099302 X750003682
07/06

2
Copyright©2006ByEcho,Incorporated
All Rights Reserved.
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job
dependability. Read and understand this manual and the SAFETY MANUAL you found in the same package. You will
find both easy to use and full of helpful operating tips and SAFETY messages.
THE OPERATOR'SMANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. Contains specifications and information for
operation, starting, stopping, maintenance, storage and assembly
specific to this product.
THE SAFETY MANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. Explains possible hazards involved with the
use of Grass Trimmers and Brush Cutters and what measures you
should take to make their use safer.
TABLE OF CONTENTS
Introduction ...................................................................... 2
- The Operator's Manual............................................... 2
- The Safety manual...................................................... 2
Safety ................................................................................ 3
- Manual Safety Symbols and Important Information .. 3
- InternationalSymbols ................................................ 3
- Personal Condition and Safety Equipment ................ 4
- EquipmentCheck ....................................................... 6
EmissionControl............................................................... 8
Description ....................................................................... 7
Contents ........................................................................... 9
Assembly ........................................................................ 10
- PlasticShieldInstallation......................................... 10
- NylonLineHeadInstallation ................................... 10
- ToAdvanceTrimmerLine ....................................... 10
- RemoveNylonHead ................................................ 11
- BladeInstallation ..................................................... 11
- U-HandleInstallation............................................... 13
- Throttle Linkage and Ignition Leads........................ 13
- Balance and Adjust Unit.......................................... 14
Operation ........................................................................ 14
- OperationwithBlades ............................................. 14
- Fuel .......................................................................... 16
- StartingColdEngine ................................................ 17
- StartingWarmEngine.............................................. 18
- Stopping Engine ...................................................... 19
Maintenance ................................................................... 19
- SkillLevels ............................................................... 19
- Maintenance Intervals ............................................. 20
- AirFilter ................................................................... 21
- FuelFilter ................................................................. 21
- SparkPlug ................................................................ 22
- CoolingSystemCleaning......................................... 22
- ExhaustSystem........................................................ 23
- Carburetor Adjustment ............................................ 24
- Lubrication............................................................... 25
- NylonLineReplacement .......................................... 26
- Sharpening Metal Blades......................................... 27
Troubleshooting ............................................................. 28
Storage............................................................................ 29
Specifications.................................................................. 30
ServicingInformation...................................................... 32
- Parts/SerialNumber ................................................. 32
- Service ..................................................................... 32
- ECHOConsumerProductSupport........................... 32
- Warranty Card ......................................................... 32
- Additional or Replacement Manuals ....................... 32
Specifications, descriptions and illustrative material in this
literature are as accurate as known at the time of publication,
but are subject to change without notice. Illustrations may
include optional equipment and accessories, and may not
include all standard equipment.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 3
IMPORTANT Theenclosedmessage
provides information necessary for the
protection of the unit.
NOTE This enclosed message provides
tips for use, care and maintenance of the
unit.
This symbol accompanied by the words WARNING
and DANGER calls attention to an act or condition
that can lead to serious personal injury to operator
and bystanders.
The circle with the slash symbol means whatever is
shown within the circle is prohibited.
SAFETY
MANUAL SAFETY SYMBOLS AND IMPORTANT INFORMATION
Throughout this manual and on the product itself, you will find safety
alerts and helpful, information messages preceded by symbols or key
words. The following is an explanation of those symbols and key words
and what they mean to you.
INTERNATIONALSYMBOLS
Hot
Surface
Carburetor
Adjustment
-Idlespeed
Carburetor
Adjustment
- High speed
mixture
DESCRIPTION SYMBOLSYMBOL
"WARNING, SEE
OPERATOR'S
MANUAL
Weareye,ear
and head
protection
Emergency
Stop Fueland oil
mixture
FingerSevering
Carburetor
Adjustment
-Lowspeed
mixture
Primer
Bulb
Ignition
ON/
OFF
Wear hand and
foot protection
Safety/Alert
Keepbystandersandhelpers
away15m(50ft.).
DONOTsmoke
nearfuel.
DONOTallow
flamesorsparks
nearfuel.
DESCRIPTION SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Choke Control
"Cold Start"
Position
(ChokeClosed)
Choke Control
"Run"
Position
(ChokeOpen)
Do not use
blades.String
lineonly

4
Physical Condition
Your judgment and physical dexterity may not be good:
•if you are tired or sick,
•ifyouaretaking medication,
•if you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
Wear eye protection that meets ANSI Z87.1 or CE requirements whenever you operate the unit.
Hand Protection
Wear no-slip, heavy-duty work gloves to improve your grip on the handle. Gloves also reduce the transmission of
machine vibration to your hands.
Hearing Protection
ECHO recommends wearing hearing protection whenever unit is used.
Proper Clothing
Wear snug fitting, durable clothing;
•Pants should have long legs, shirts with long sleeves.
•DONOTWEARSHORTS,
•DONOTWEARTIES,SCARFS,JEWELRY.
Wear protective hair covering to contain long hair.
Wear sturdy work shoes with nonskid soles;
•DONOTWEAROPENTOEDSHOES,
•DONOTOPERATEUNITBAREFOOTED.
Hot Humid Weather
Heavy protective clothing can increase operator fatigue which may lead to heat stroke. Schedule heavy work for early
morning or late afternoon hours when temperatures are cooler.
WARNING DANGER
Users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are
not followed. Proper clothing and safety gear must be worn when operating unit.
PERSONAL CONDITION AND SAFETY EQUIPMENT
Extended Operation/Extreme Conditions
It is believed that a condition called Raynaud’s Phenomenon, which affects the fingers of certain individuals, may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning
sensations, followed by loss of color and numbness in the fingers. The following precautions are strongly recom-
mended,because the minimum exposure, which mighttrigger the ailment, is unknown.
•Keep your body warm, especially the head, neck, feet, ankles, hands,
and wrists.
•Maintain good blood circulation by performing vigorous arm exer-
cises during frequent work breaks, and also by not smoking.
•Limit the hours of operation. Try to fill each day with jobs where
operating the unit or other hand-held power equipment is not
required.
•If you experience discomfort, redness, and swelling of the fingers
followed by whitening and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 5
WARNING DANGER
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can cause
serious injury or death.
Read the Manuals
•Provide all users of this equipment with the Operator’s Manual and
Safety Manual for instructions on Safe Operation.
Clear the Work Area
•Spectators and fellow workers must be warned, and children and
animalspreventedfromcomingnearerthan15 m (50 ft.) while the unit
is in use.
Keep a Firm Grip
•Hold the front and rear handles with both hands, with thumbs and
fingers encircling the handles.
Keep a Solid Stance
•Maintain footing and balance at all times. Do not stand on slippery,
uneven or unstable surfaces. Do not work in odd positions or on
ladders. Do not over reach.
Avoid Hot Surfaces
•Keep exhaust area clear of flammable debris. Avoid contact during
andimmediatelyafteroperation.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the fingers, hands, arms, and shoulders may cause soreness,
swelling, numbness, weakness, and extreme pain in those areas. Certain repetitive hand activities may put you at a high
riskfordeveloping aRepetitiveStressInjury(RSI). AnextremeRSIcondition is CarpalTunnelSyndrome(CTS), which
could occur when your wrist swells and squeezes a vital nerve that runs through the area. Some believe that prolonged
exposure to vibration may contribute to CTS. CTS can cause severe pain for months or even years.
To reduce the risk of RSI/CTS, do the following:
•Avoid using your wrist in a bent, extended, or twisted position.
Instead try to maintain a straight wrist position. Also, when grasping,
use your whole hand, not just the thumb and index finger.
•Take periodic breaks to minimize repetition and rest your hands.
•Reduce the speed and force with which you do the repetitive move-
ment.
•Do exercise to strengthen the hand and arm muscles.
•Immediately stop using all power equipment and consult a doctor if
you feel tingling, numbness, or pain in the fingers, hands, wrists, or
arms. The sooner RSI/CTS is diagnosed, the more likely permanent
nerve and muscle damage can be prevented.

6
EQUIPMENT CHECK
WARNING DANGER
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment
combination. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which
have not been tested and approved by ECHO. Read and comply with all safety instructions listed in this manual and
safety manual.
•Check unit for loose/missing nuts, bolts, and screws. Tighten and/or
replace as needed.
•Inspect fuel lines, tank, and area around carburetor for fuel leaks. DO
NOT operate unit if leaks are found.
•Inspect shield for damage and ensure that the cut-off knife issecurely
in place. Replace if either is damaged or missing.
•Check that the cutting attachment is firmly attached and in safe
operating condition.
•Check that front loop handle and shoulder strap/ or shoulder/
waist harness are adjusted for safe, comfortable operation. See
Assembly Section for proper adjustment.
AnEmission Control Labelis located on the engine. (This is
anEXAMPLEONLY,informationonlabelvariesbyengine
FAMILY).
PRODUCTEMISSIONDURABILITY
The 300 hour emission durability compliance period is the time span selected by the manufacturer certifying the
engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are
followed as listed in the Maintenance Section of this manual.
EMISSION CONTROL
EPA Phase 2/California
The emission control system for this engine is EM/TWC (Engine
Modification and Catalyst). IMPORTANTENGINEINFORMATION
ENGINE FAMILY: 6EHXS.0234KA DISPLACEMENT: 22.8 cc
EMISSION COMPLIANCE PERIOD: 300 Hours
THIS ENGINE MEETS U.S. EPA PH2 AND 2005 - 2006
CALIFORNIA EMISSION REGULATIONS FOR SORES. REFER
TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS
AND ADJUSTMENTS.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 7
DESCRIPTION
Locate these safety decals on your unit. Make sure the decals are legible and that you understand and follow the
instructions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDER-
INGinstructionsforspecificinformation.
17
19
20
21
22
18
15
16
14
P/N 89022809560
P/N 89016054130
P/N 89016006361
Hot Decal (near muffler)
9
10
1
2
3
4
5
6
8
7
P/N 89016054130
P/N 89022809560
11
12
13
Metal Debris Shield Decal
P/N 89016841031
Shaft Decal
Spanish Decal

8
1. POWERHEAD-IncludestheEngine,Clutch,FuelSystem,IgnitionSystemandRecoilStarter.
2. THROTTLETRIGGERLOCKOUT-Thislevermustbeheldduringstarting.Operationofthethrottletriggeris
prevented unless throttle trigger lockout lever is engaged.
3. STOPSWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to
RUN,BACKtoSTOP.
4. THROTTLETRIGGER- Controlsenginespeed. Springloadedtoreturntoidlewhenreleased. Duringacceleration,
press trigger gradually for best operating technique.
5. DRIVESHAFTASSEMBLY-IncludestheRear(righthand)Handleassembly,GearHousingassembly,Front(loop,
left hand) Handle assembly, steel drive shaft and Safety Decal.
6. BLADE - Circular blade for grass, weed or brush cutting applications. Harness, metal shield & U-handles required for
blade operation.
7. METALBLADESHIELD-Requiredwhen unitisequippedwith blades. Donotoperateunit withoutshield.
8. U-HANDLE-Requiredformetalbladeoperation.
9. HIP PAD - Used to protect hip/leg and clothing when using U-handle equipped unit.
10. SHOULDER HARNESS- An adjustable strap that suspends the unit from the operator. Using the strap reduces
operator fatigue and restricts rearward movement of unit.
11. PLASTICDEBRISSHIELDASSEMBLY-Includedinplasticbag(co-pack). MUSTbeinstalledonunitbeforeuse,
see Assembly Instructions. Shield assembly includes the Cut-Off Knife. Mounts on the Gear Housing Assembly just
above the cutting attachment. Helps protect the operator by deflecting debris produced during the trimming opera-
tion. This shield must be replaced with the steel shield for blade use.
12. CUT-OFFKNIFE -Automatically trimslineto thecorrectlength: 5"afterhead istappedontheground.Iftrimmeris
operated without a cut-off knife, the line will become too long, the engine will overheat, and engine damage may
occur.
13. NYLONCUTTERHEAD-Containsreplaceablenylontrimminglinethatadvanceswhenthetrimmerheadistapped
against the ground while the head is turning at normal operating speed.
14. SPARKPLUG-Providessparktoignitefuelmixture.
15. ARM REST - Provides arm rest during operation and protects arm from the hot engine.
16. SPARKARRESTOR-CATALYTICMUFFLER/MUFFLER-Themufflerorcatalyticmufflercontrolsexhaustnoise
and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler. Keep
exhaustareaclearofflammabledebris.
17. FUELTANK-Containsfuelandfuelfilter.
18. RECOILSTARTERHANDLE-Pullhandleslowlyuntilstarterengages,thenquicklyandfirmly. Whenengine
starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
19. FUELTANKCAP-Coversandsealsfueltankopening.
20. PURGEBULB - Pumping purge bulb before starting engine draws fresh fuel from the fuel tank, purging air from the
carburetor. Pump purge bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump purge bulb
an additional 4 or 5 times.
21. AIRCLEANER-Containsreplaceablefilterelement.
22. CHOKE - The choke control is located at the rear of the air cleaner housing. Move choke lever to Cold Start ( ) to
close choke for cold start. Move choke lever to "Run" ( ) position to open choke.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 9
CONTENTS
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions,
shield installation and other assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing
parts. Use the contents list to check for missing parts.
__ 1- Power Head / Drive Shaft Assembly
__ 1- PlasticBag(co-pack)
__ - 1, Operator's Manual
__ - 1, Safety Manual
__ - 1, Warranty Registration Card
__ -1,LimitedWarrantyStatement
__ - 1, Plastic shield
__ -1,wrench17x19
__ -1,locking tool
__ -1,NylonTrimmerHead
__ - 1, Safety Glasses
__ -1,Echo Power BlendTM 2-strokeoilsample
__ - 1, shield plate
__ -3,5mmx16mmscrews(shieldmtg.)
__ -1,4mmHexagonWrench
__ -1,8mmx55mmbolt
__ -1,flatwasher
__ -2,cableclips
__ -3, 5mmx15mmscrews(shieldmount)
__ -2,5mmx8mmscrews(brackettoshield)
__ -4,5mmnuts
__ -4,5mmlockwashers
__ -1,metalshield
__ -1,bracket
__ - 1, Shoulder Harness w/hip pad

10
ASSEMBLY
PLASTIC SHIELD INSTALLATION
(For Nylon Line Operation)
Tools Required: Screwdriver.
Parts Required: PlasticShield,ShieldPlate,three(3)5mmx16mm
screws.
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 and upper plate (A) from PTO shaft.
2. Install the shield on the bottom of the bearing housing flange.
3. Place shield plate (B) on shield, align holes and install three (3)
5x16mmscrews.
4. Install upper plate (A).
NYLON LINE HEAD INSTALLATION
(Use with Plastic Shield)
Tools Required: HeadLockingTool.
Parts Required: NylonLineHead.
1. Be sure upper adapter plate remains on PTO shaft.
2. Align locking hole in upper plate with notch in edge of gear
housing and insert head locking tool (C).
3. Thread line head onto shaft by turning it counter clockwise until
head is tight against upper plate.
4. Removelockingtool.
TO ADVANCE TRIMMER LINE
Tip:
To advance trimmer line, tap trimmer head against the ground while
the head is turning at normal operating speed.
B
A
C

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 11
H
D
I
REMOVE NYLON HEAD
1. Align locking hole in upper plate (D) with notch in edge of gear
housing and insert head locking tool.
2. Remove line head (I) by turning it clockwise until head is com-
pletely off of shaft.
3. Removelockingtool(H).
BLADEINSTALLATION
WARNING DANGER
You must install the U-Handle and all Blade Conversion parts shown in the following instructions before operating
this unit with a metal blade, otherwise serious injury may result.
NOTE
Model SRM-231U includes U-Handle, and necessary blade
conversion parts. Blades are not provided with trimmer/
brushcutters and must be selected for type of cutting being
performed. Seepage15,"BladeSelection."
Install Metal Shield
Tools Required: 8x10mmOpen-endWrench,Screwdriver,Scrench,
LockingTool
Parts Required: MetalShield,ShieldBracket,
3-5 x15mmscrewsw/captivatedflatandlock-
washer, (metal shield to gear housing).
2-5x8mmscrews,2-5mmnuts,2-5mmlock-
washers, (bracket to shield).
2- 5mmnuts,2-5mmlockwashers
(bracket to gear housing)
1. If installed, remove nylon line head, upper plate and plastic shield,
and set upper plate aside for use with blade installation. Retain
plastic shield, shield plate, and plastic shield hardware for conver-
sion back to nylon line operation.
2. Align hole in upper plate (D) with notch in gear housing (G), and
insert locking tool to prevent splined shaft from turning. Arrow on
gear housing flange points to notch location.
3. Removesplitpin(A),L.H.bladenut(B),lowerplate(C),andupper
plate (D) from PTO shaft. Turn blade nut clockwise to remove.
4. Removelockingtool.
5. Loosely attach bracket (J) to shield (K) and attach shield to bottom
of gear housing (G) with hardware provided.
6. Tightenall shield hardware.
K
J
G
CBA
D
G

12
Install Blade
Tools Required: LockingTool,T-Wrench.
Parts Required: UpperPlatew/20mmpilot,LowerPlate,10mmNutw/
L.H.threads,2x25mmCotterPin,Blade.
1. Install upper plate (D) on splined PTO shaft, pilot side down. Blade
installationrequiresUpperPlate(D)with20mmpilot.
2. Install Blade (L) on upper plate pilot. Blades must be installed so
that rotation arrow on blade matches rotation of unit: teeth toward
direction of rotation (See debris shield decal). Secure blade with
LowerPlate(C),and10mmL.H.nut(B).Turnnutcounter-clock-
wise on PTO shaft to tighten.
3. Align hole in upper plate with notch in gear housing, and insert
Locking Tool (H) to prevent splined shaft from turning. Arrow on
gear housing points to notch. Tighten 10 mm nut securely.
4. Insert Split Pin (A) in hole in PTO shaft, and bend pin legs around
shaft counterclockwise to retain 10 mm nut.
IMPORTANT
Never reuse a cotter pin - install a new cotter pin each time a blade is
installed or replaced.
5. Tri-CutBlade(M)isinstalledwithGlideCup(N).
6. Removelockingtool.
D
20
H
L
BA
C
D
L
C
B
A
HM
N

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 13
U-HANDLEINSTALLATION
Tools Required: 19mmwrench,4mmhexwrench,Pliers
Parts Required: U-Handle,Clampw/screws,8mm x55mmhexbolt,
8mmflatwasher
1. Install upper U-Handle and bracket on lower bracket with one (1)
8mmx55mmbolt(A)and(1)largecircularwasher. Donottighten
bolt securely until final adjustments are completed.
2. Loosen upper (2) U-handle clamp screws (B), and position U-
handle as shown.
3. Lightly tighten 8mm bolt (A) and clamp screws (B) to hold U-handle
in position until final adjustments are completed.
4. Route throttle linkage and ignition lead assembly along shaft and
clip as shown.
THROTTLE LINKAGE AND IGNITION LEADS
1. Placethrottlelinkage(C)throughadjustment fixture (D) and install
wire end into large carburetor throttle swivel hole (E). Check throttle
for freedom of movement and that wide open throttle / low idle
extremes are adjusted properly. The throttle linkage must be
adjusted by moving the adjustment fixture (D). Consult with your
Echo Dealer for correct adjustment procedure.
2. Connectignition leads (F) and (G).
3. Install throttle linkage into bracket clamp (H) and pinch snug with
pliers. Bend bracket up and flush against drive shaft.
F
G
C
D
A
B
E
H

14
4. Bundle and secure ignition leads against engine housing with clip
(I).
J
K
I
BALANCE AND ADJUST UNIT
1. Loosen harness clamp screw.
2. Put on harness and attach unit to harness.
3. Slide harness clamp (J) up or down until unit balances with head
approximately50-75mm(2-3in.)fromtheground.
4. Tighten harness clamp screw.
5. Loosen upper U-Handle clamp screws (K), and position U-Handle
forcomfortableoperation.
6. TightenU-Handleclamp screws and 8 mm clamp boltsecurely.
OPERATION
OPERATION WITH BLADES
WARNING DANGER
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.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 15
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!
8ToothWeed/GrassBlade(P/N69600120331)isdesignedforgrass,
garden debris and thick weeds. DO NOT use this blade for brush or
heavywoodygrowth,19mm(3/4in.)diameterorlarger.
80ToothBrushBlade(P/N69500120331)isdesignedforcuttingbrush
andwoodygrowthupto64mm (2-1/2in.)diameter.
22ToothClearingBlade(99944200130)isdesignedfordensethickets
andsaplings upto64mm(2-1/2in.)diameter.
UseShoulder/WaistHarness(P/N99944200200)Useofthe Shoulder/
Waist Harness is recommended for ALLTrimmer/Brush Cutter use, not
just Blade operation. The Shoulder/Waist Harness when used in a
trimming operation with nylon line head suspends the trimmer from the
operator's shoulder and reduces operator fatigue.
During blade operation, the same fatigue reduction is achieved. Safety
to the operator is also enhanced by reducing the possibility of blade
contact with the operator's hands and feet by restricting trimmer
movement.
NOTE
In case of Emergency, pull up on the Quick Release Collar to
disconnect the trimmer from the harness.

16
oitaR1:05-xiMliOotleuF
.S.UCIRTEM
SAGLIOSAGLIO
snollaG.zo.lFretiL.cc
1
2
5
6.2
2.5
31
4
8
02
08
061
004
Mixing Instructions
1. Fill an approved fuel container with half
of the required amount of gasoline.
2. Add the proper amount of 2-stroke oil to
gasoline.
3. Close container and shake to mix oil with
gasoline.
4. Add remaining gasoline, close fuel
container,andremix
.IMPORTANT
Spilled fuel is a leading cause of
hydrocarbon emissions. Some states
may require the use of automatic fuel
shut-off containers to reduce fuel
spillage.
Afteruse
• DO NOT store a unit with fuel in its tank.
Leaks can occur. Return unused fuel to an
approved fuel storage container.
Storage - Fuel storage laws vary by locality.
Contact your local government for the laws
affecting your area. As a precaution, store
fuel in an approved, airtight container. Store
in a well-ventilated, unoccupied building,
away from sparks and flames.
IMPORTANT
Storedfuelages.Donotmixmorefuel
than you expect to use in thirty (30)
days, ninety (90) days when a fuel
stabilizeris added.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container thor-
oughly before each use.
FUEL
NOTICE:Useofunmixed,improperlymixed,orfuelolderthan90
days, (stale fuel), may cause hard starting, poor performance, or
severe engine damage and void the product warranty. Read and
follow instructions in the Storage section of this manual.
Fuel Requirements
Gasoline-Use89 Octane [R+M/2] (mid grade or higher) gasoline
known to be good quality. Gasoline may contain up to 15% MTBE
(methyl tertiary-butyl ether). Gasohol containing methyl (wood) alcohol
is NOT approved.
TwoStrokeOil-Atwo-strokeengineoilmeetingISO-L-EGD(ISO/CD
13738)and J.A.S.O. FC Standards must be used. Echo brandpremium
Power Blend TM Universal 2-Stroke Oil meets these standards. Engine
problems due to inadequate lubrication caused by failure to use an
ISO-L-EGDandJ.A.S.O.FCcertifiedoil,suchasEchopremiumPower
BlendTM,will void the two-stroke engine warranty. (Emission related
parts only are covered for two years, regardless of two-stroke oil used,
per the statement listed in the Emission Defect Warranty Explanation.)
IMPORTANT
EchopremiumPowerBlendTMUniversal2-StrokeOilmaybemixed
at 50:1 ratio for application in all Echo engines sold in the past
regardless of ratio specified in those manuals.
Handling Fuel
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling or serious personal injury may result.
• Use an approved fuel container.
• DONOTsmokenearfuel.
• DONOTallow flames or sparksnearfuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps
slowly allowing pressure to equalize.
• NEVERrefuelaunitwhentheengineisHOTorRUNNING!
• DONOT fill fuel tanks indoors.ALWAYS fill fuel tanks outdoors
over bare ground.
• DONOToverfillfueltank. Wipeupspillsimmediately.
• Securely tighten fuel tank cap and close fuel container after
refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
• Move at least 3m (10 ft.) from refueling location before starting
the engine.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 17
STARTING COLD ENGINE
WARNING DANGER
The attachment will operate immediately when the engine starts and
could result in loss of control and possible serious injury. Keep
movable parts of the attachment off the ground and away from
objects that could become entangled or thrown.
1. Stop Switch
Move stop switch button (A) forward, away from the STOP
position.
2. Choke Lever
Move choke lever (B) to Cold Start ( ) Position.
3. Purge Bulb
Pump purge bulb (C) until fuel is visible and flows freely in the clear
fuel tank return line. Pump bulb an additional 4 or 5 times.
NOTE
Lightly place knee on drive shaft to stabilize unit during starting. Do
not apply excessive downward force or damage to unit can occur.
4. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts clear
of all obstacles. Firmly grasp right hand grip and throttle trigger
lockout with left hand and fully depress throttle trigger to wide
open position. Rapidly pull recoil starter handle/rope (D) until
enginefires(ormaximumfive[5]pulls).
5. Choke
After engine fires (or 5 pulls) , move choke lever back to Run ( )
position. Hold throttle trigger and throttle trigger lockout fully
depressed, and pull recoil starter starter handle/rope until engine
starts and runs. Release throttle trigger, and allow unit to warm up
at idle for several minutes.
NOTE
If engine does not start with choke in “Run” position after 5 pulls,
repeat instructions 4 and 5.
6. Throttle Trigger
After engine warm-up, gradually depress throttle trigger to increase
engine RPM to operating speed.
B
C
D
A

18
C
D
A
STARTING WARM ENGINE
The starting procedure is the same as Cold Start except DO NOT close
the choke, and do not depress throttle trigger to wide open position.
WARNING DANGER
The attachment should not move at idle, otherwise serious personal
injurymayresult.
NOTE
If attachment moves, readjust carburetor according to “Carburetor
Adjustment” instructions in this manual or see your ECHO Dealer.
1. Stop Switch
Move stop switch button (A) away from the STOP position.
2. Purge Bulb
Pump purge bulb (C) until fuel is visible and flows freely in the clear
fuel tank return line. Pump bulb an additional 4 or 5 times.
NOTE
Lightly place knee on drive shaft to stabilize unit during starting. Do
not apply excessive downward force or damage to unit can occur.
3. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts clear
of all obstacles. Rapidly pull recoil starter handle/rope (D) until
enginefires.
NOTE
If engine does not start after 5 pulls, use Cold Start Procedure.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 19
STOPPING ENGINE
1. Throttle
Release throttle and allow engine to return to idle before shutting
off engine.
2. Stop Switch
Move stop switch button (A) backward to STOP position.
WARNING DANGER
If engine does not stop when stop switch is moved to STOP
position, close choke - COLD START position - to stall engine.
HaveyourECHO dealer repair stop switch beforeusingtrimmer
again.
A
MAINTENANCE
Your ECHO trimmer is designed to provide many hours of trouble free service. Regular scheduled maintenance will help
your trimmer achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want to take your
unit to an ECHO Service Dealer for maintenance. To help you decide whether you want to DO-IT-YOURSELF or have the
ECHO Dealer do it, each maintenance task has been graded. If the task is not listed, see your ECHO Dealer for repairs.
SKILL LEVELS
Level1= Easy to do. Most required tools come with unit.
Level2= Moderate difficulty. Some specialized tools may berequired.
Level3= Experiencerequired.Specializedtoolsarerequired.ECHOrecommendsthat
the unit be returned to your ECHO dealer for servicing.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier. Below each task heading
are listed the various part numbers required for that task. See your ECHO dealer for these parts.

20
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METSYS
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MAINTENANCE INTERVALS