Echo SMR-2110 - 01-99 User manual

Grass Trimmer/Brush Cutter
Operator's Manual
MODELS, SRM - 2100, 2110
Serial Number 001001 & UP
MODELS, Type 1E SRM - 2100, 2110
Serial Number 001001 - 982332
X7532278901 89861554131
01/99
WARNING DANGER
Readrulesforsafeoperationandinstructionscarefully. ECHOprovidesanOperator's
ManualandaSafetyManual. Bothmustbereadandunderstoodforproperandsafe
operation.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 3
The circle with the slash symbol means whatever is
shown within the circle is prohibited.
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.
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.
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.
SAFETY
DECALS
Locate these safety decals on your unit. The complete unit illustration,
foundinthe"DESCRIPTION"section, willhelp you locate them.
Make sure the decals are legible and that you understand and follow
the instructions on them. If a decal cannot be read, a new one can be
orderedfromyourECHOdealer. SeePARTSORDERINGinstructions
forspecificinformation.
DEBRISSHIELDDECAL
Metal Debris
Shield
Plastic Debris
Shield

4
Shaft Decal
WARNING DANGER
• This unit can be dangerous and cause serious injury if improperly
used. To reduce injury risk to operator, helpers and bystanders, read
and understand the Operator's and Safety manuals.
• Blindness can occur from objects that are thrown or ricocheted even
with shield in place. Operators, helpers and bystanders must wear
ANSI Z87.1 approved eye protection.
• Always wear hearing protection when operating unit.
• Prevent accidental contact with unit and any cutting attachment.
Maintaina50ft.(15M)radius,DANGERZONEsurroundingthe
operator. ONLY the operator, dressed in proper protective clothing
shouldbeintheDANGERZONE.
• BewareofKICKOUT(bladethrust)whenusingblades.Special
precautions are necessary for blade operation, see your Operator's
and Safety Manuals. ONLY install ECHO approved blades on Brush
Cutters (SRM) models equipped with proper blade shield, U-handles,
harness, blade collar, nut and cotter pin.
• Blade/Cutting attachment does not stop immediately after releasing
throttle. Keep hands and feet clear of blade/cutting attachment unless
engine is shut off and cutting attachment is not moving.
• INSPECTBLADESBEFOREUSE.
• DONOTUSEDAMAGED,CRACKED,BENT,DULLOR
IMPROPERLYSHARPENEDBLADES.
• Do not remove shields, modify the unit or install attachments or parts
not approved by ECHO. Approved attachment information and
replacement Operator's and Safety Manuals are available from your
ECHOdealerorbywriting:ECHO,INCORPORATED, 400OAK-
WOODRD.,LAKEZURICH,IL 60047.
4
INTERNATIONALSYMBOLS
P/N 89016844830
SYMBOL
DESCRIPTION/APPLICATION SYMBOL FORM/
SHAPE SYMBOL
DESCRIPTION/APPLICATION
SYMBOL FORM/
SHAPE
HOT
SURFACE
CARBURETOR
ADJUSTMENT
- IDLE SPEED
CARBURETOR
ADJUSTMENT
- HIGH SPEED
MIXTURE
SYMBOL
DESCRIPTION/APPLICATION SYMBOL FORM/
SHAPE SYMBOL
DESCRIPTION/APPLICATION
SYMBOL FORM/
SHAPE
"WARNING, SEE
OPERATOR'S
MANUAL
WEAR EYES, EARS
AND HEAD
PROTECTION
EMERGENCY STOP FUEL AND OIL
MIXTURE
FINGER SEVERING
CARBURETOR
ADJUSTMENT
- LOW SPEED
MIXTURE
Primer Bulb
Ignition
ON/OFF
WEAR HAND AND
FOOTPROTECTION
SAFETY/ALERT
KEEP BYSTANDERS AND HELPERS
AWAY 15 M (50 FT.).
DO NOT SMOKE
NEAR FUEL.
DO NOT ALLOW
FLAMES OR
SPARKS NEAR
FUEL.
Engine choke
control.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 5
SAFETYINSTRUCTIONS
PERSONAL CONDITION AND SAFETY EQUIPMENT
WARNING DANGER
Trimmer/Brush Cutter users risk injury to themselves and others if the trimmer/brush cutter is used improperly and or
safety precautions are not followed. Proper clothing and safety gear must be worn when operating a trimmer.
Physical Condition --
Your judgment and physical dexterity may not be good:
• if you are tired or sick,
•ifyouaretakingmedication,
• 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 trimmer.
Hand Protection --
Wear no-slip, heavy duty work gloves to improve your
grip on the Trimmer/Brush Cutter handles. Gloves also
reduce the transmission of machine vibration to your
hands.
Hearing Protection --
ECHOrecommendswearinghearingprotectionwhenever
unit is used.
Proper Clothing --
Wear snug fitting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DONOTWEARSHORTS,
• DONOTWEARTIES,SCARVES,JEWELRY.
Wear sturdy work shoes with non-skid soles;
• DONOTWEAROPENTOEDSHOES,
• DONOTOPERATEUNITBAREFOOTED.
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 sensations followed by loss of color and
numbness in the fingers. The following precautions are strongly
recommendedbecausethe minimum exposurewhichmighttrigger the
ailmentisunknown.
• 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 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 further exposing yourself to cold and vibration.
EXTENDED OPERATION/EXTREME CONDITIONS

6
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the fingers,
hands, arms and shoulders may cause soreness, swelling, numbness,
weakness and extreme pain in those areas. Certain repetitive hand
activities may put you at a high risk for developing a Repetitive Stress
Injury(RSI).AnextremeRSIconditionisCarpalTunnelSyndrome
(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 grasp-
ing, 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 exercises to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doctor if
you feel tingling, numbness or pain in the fingers, hands, wrists or
arms. The sooner RSI/CTS is diagnosed, the more likely permanent
nerve and muscle damage can be prevented.
EQUIPMENT
WARNING DANGER
Use only ECHO approved attachments. Serious injury may result from the use of a non approved attachment
combination.Readandcomplywithallsafetyinstructions listed in this manual and safety manual. ECHO, INC. will
not be responsible for the failure of cutting devices, attachments or accessories which have not been tested and
approvedby ECHO.
• 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 is
securely 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 optional shoulder/waist harness
are adjusted for safe, comfortable operation. See Assembly for proper
adjustment.
• Keep exhaust area clear of flammable debris. Avoid contact during
andimmediatelyafteroperation.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 7
SAFE OPERATION
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.
• Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
KeepAFirmGrip
• Hold the front and rear handles with both hands with thumbs and
fingers encircling the handles
KeepASolidStance
• 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.
EMISSION CONTROL --
The emission control system for this engine is EM (Engine
Modification). IMPORTANT ENGINE INFORMATION
ENGINE FAMILY: TEH024UB24RC
DISPLACEMENT: 23.6 CC
THIS ENGINE MEETS U.S. EPA PH1 AND 1996
- 1999 CALIFORNIA EMISSION REGULATIONS
FOR ULGE ENGINES. REFER TO OWNER'S
MANUAL FOR MAINTENANCE SPECIFICA-
TIONS AND ADJUSTMENTS.
EmissionControlLabellocatedonEngine
(EXAMPLEONLY,informationonlabelvariesbyFAMILY).
DESCRIPTION
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.

8
CONTENTS LIST
ITEMS
1 - POWERHEAD
1 - DRIVESHAFTASSEMBLY
1 - PLASTICBAG(CO-PACK)
-1,OPERATOR'SMANUAL
- 1, SAFETY MANUAL
-1,WARRANTYREGISTRATIONCARD
-1,LIMITEDWARRANTYSTATEMENT
-1, PLASTICSHIELD
- 1, TOOL BAG
--1,8MMX10MMWRENCH
--1,SCRENCH
--1,LOCKINGTOOL
-1,NYLONTRIMMERHEAD
- 1, SAFETY GLASSES
-1, 2-STROKE OILSAMPLE, 2.6 OZ.
-1,SHOULDERHARNESSW/HIPPAD
-1,SHOULDERHARNESSW/OHIPPAD
- 1, PLASTIC BAG
--1,SHIELDPLATE
--3,5MMX15MMSCREWS(SHIELDMTG.)
- 1, PLASTIC BAG (FOR BLADE USE ONLY)
--1,METALSHIELD
--1,SHIELDBRACKET
--1, PLASTIC BAG
---1,8MMX55MMSCREW (HANDLEMGT.)
---1,WASHER,CIRCULAR
---2,CABLECLIPS
- 1, PLASTIC BAG
--3, 5MMX15MMSCREWS(SHIELDMOUNT)
--2,5MMX8MMSCREWS(BRACKETTOSHIELD)
--4, 5MMNUTS
--4,5MMLOCKWASHERS
- -1,HARNESSCLAMP
MODELS
2110
2110 1E
2100
2100 1E
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
CONTENTS

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 9
1
SAFETY
VIDEO
2
3
4
5
6
7
8
9
10
11
12 13
14
15
16
17
18
19 20
26
5
21
22
23
24
25

10
1. OPERATOR'SMANUAL- Included inplasticbag(co-pack). Read beforeoperationand keep inasafeplace for
future reference, i.e., operation, maintenance, storage and specifications.
2. SAFETYMANUAL- Included inplasticbag(co-pack). Readbeforeoperationand keep inasafe place forfuture
reference to learn proper, safe operating techniques.
3. POWERHEAD-IncludestheEngine,Clutch,FuelSystem,IgnitionSystemandRecoilStarter.
4. GRIP-Rear(righthand)handle.
5. STOPSWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to
RUN,BACKtoSTOP.
6. FRONTHANDLE - The front handle is factory assembled to the Drive Shaft assembly (some models) but must be re-
positioned for proper cutting attitude and operator comfort.
7. DRIVESHAFTASSEMBLY-IncludestheRear(righthand)Handleassembly,GearHousingassembly,Front,(left
hand)Handleassembly,FlexibleDriveCableandSafetyDecal.
8. NYLONCUTTINGATTACHMENT-Containsreplaceablenylontrimminglinethatadvanceswhenthetrimmerhead
is tapped against the ground while the head is turning at normal operating speed.
9. CUT-OFFKNIFE-Automaticallytrimslinetothecorrect length:5" -afterheadistappedonthe ground.Iftrimmeris
operated without a cut-off knife the line will become too long, the engine will overheat and engine damage may occur.
10. PLASTICDEBRISSHIELDASSEMBLY-Includedinplasticbag(co-pack). MUSTbeinstalledonunitbeforeuse,
see Assembly Instructions. Shield assembly includes the Cut-Off Knife and Safety Decal. Mounts on the Gear
Housing Assembly just above the cutting attachment. Helps protect the operator by deflecting debris produced
during the trimming operation. This shield must be replaced with the steel shield for blade use.
11. THROTTLETRIGGER-Springloadedtoreturntoidlewhenreleased.Duringacceleration,presstriggergradually
for best operating technique.
12. ARM REST - Provides arm rest during operation and protects arm from the hot engine.
13. SPARKPLUG-Providessparktoignitefuelmixture.
14. MUFFLER/SPARKARRESTOR-Themufflercontrolstheexhaustnoisewhilethesparkarrestorpreventshot,
glowing particles of carbon from leaving the muffler where they could possibly start a fire. Built in accordance with
SAEJ335, this product is approved for use on U.S. Forest Land and within the states of California, Maine, Oregon and
Washington if the spark arresting screen is in place and in good repair.
15. FUELTANK-Containsfuelandfuelfilter.
16. RECOILSTARTERHANDLE-Pullrecoilhandleslowlyuntilstarterengages,thenquicklyandfirmly.Whenengine
starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
17. FUELTANKCAP-Coversandsealsfueltankopening.
18. PRIMERBULB-Pumpingprimerbulbbeforestartingenginedrawsfreshfuelfromthefueltankprimingthecarbure-
tor for starting. Pump primer bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump bulb an
additional4 or5times.
19. AIRCLEANER-Containsreplaceablefilterelement.
20. CHOKE - The choke control lever is located on the top of the air filter case. Move lever to "COLD START" to close
choke for cold starting. Move lever to "RUN" position to open choke.
21. HIP PAD - (SRM-2110) Used to protect hip/leg and clothing when using U-handle equipped unit.
22. SHOULDERHARNESS- OptionalSRM-2100, Standardon SRM-2110. Anadjustable strapthat suspendsthe unit
from the operator. Using the strap reduces operator fatigue.
23. METALBLADESHIELD-(SRM-2110)Requiredwhenunitisequippedwithblades.Donotoperateunitwithout
shield.
24. BLADE - Circular blade for grass, weed or brush cutting applications. Harness, metal shield and U-handles are
required for blade operation.
25. U-HANDLE-(SRM-2110)Requiredformetalbladeoperation.
26. SAFETYVIDEO(Notincludedwithunit)-99922202540Englishversiononly)isavailableatacostof$5.00from
ECHO, INC. or any authorized ECHO dealer. The video overviews safety precautions and proper operating tech-
niques and is supplemental to the Safety Manual. Read and understand the Safety Manual for complete information
on safe operation.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 11
SPECIFICATIONS
SRM-2100, 2110 1/1E
LEDOME1/10012E1/10112
htgneL ).ni95(mm0051).ni95(mm0051
htdiW ).ni0.31(mm033).ni6.32(mm006
thgieH ).ni8.11(mm003).ni2.41(mm063
daehrettuc/w)yrd(thgieW).bl4.11(gk2.5).bl7.21(gk8.5
epyTenignE enigneenilosagrednilycelgnis,ekorts-owt,deloocriA
eroB ).ni862.1(mm2.23).ni862.1(mm2.23
ekortS ).ni40.1(mm0.62).ni40.1(mm0.62
tnemecalpsiD ).ni.uc92.1(cc2.12).ni.uc92.1(cc2.12
tsuahxE relffuMrotserrAkrapS
roterubraC remirp/wU1CledommgarhpaidamaZ
metsySnoitingI epytnoitingiegrahcsidroticapac,otengamleehwylF
gulPkrapS ).ni620.0(mm56.0paGY7-JCnoipmahCroA7-MPBKGN
leuF )liOekorts-owTdnaenilosaG(dexiM
oitaRliO/leuF lioenignedeloocriaekorts-owt,ecnamrofrePhgiHOHCE1:05
enilosaG ,lohoclalyhtemgniniatnocleufesuTONOD.dedaelnuenatcO98 .EBTM%51rolohoclalyhte%01nahterom
liO lioenignedeloocriaekorts-owt,ecnamrofrePhgiHOHCE1:05
yticapaCknaTleuF ).zo.lfSU0.41(.til4.0
metsySretratSlioceR retratSlioceRcitamotuA
hctulC epyTlagufirtneC
tfahSevirD tfahSxelF"4/1
noitceriDgnitatoR potmorfdeweivesiwkcolC-retnuoC
daeHrettuC )tf04(m31yticapacenil™erifssorC.ni590.htiw)enil-2(daeHeniLnolyN
*eldnaH pirG-thgiR,pooL-D-tnorF
eldnaH-U 0112-MRSnodradnatS
ssenraHredluohSlanoitpOdradnatS
MPRdeepSeldI 0023-0082
MPR).T.O.W(deepSelttorhTnepOediW 00011-0059
* Install and use U-Handle when operating any model with blade.

12
PLASTICSHIELD INSTALLATION
(forNylonLineOperation)
Tools Required: Screwdriver.
Parts Required: PlasticShield,ShieldPlate,three(3)5mmx15mm
screws.
NOTE
The plastic shield is for use with the Nylon Line Head only.
Install Metal Shield when using plastic or metal blades.
1. (SRM-2110)Removesplitpin,bladenutandlowerplatefromPTO
shaft.
1. (SRM-2100)RemoveplasticsleevefromPTOshaft.
2. Install the shield on the bottom of the bearing housing flange.
3. Place shield plate on shield, align holes and install three (3) 5x15
mmscrews.
NYLON LINE HEAD INSTALLATION
NOTE
ForSRM-2100followsteps1,5&6.
ForSRM-2110followsteps1-6.
Tools Required: HeadLockingTool,17x19mmScrench
Parts Required: NylonLineHead.
1. Align locking hole in upper plate (B) with notch in edge of gear
housing and insert head locking tool (A). Remove plastic sleeve
fromPTOshaft.(SRM-2100)
2. Remove split pin from hole in PTO shaft.
3. Remove10mm nutbyturning itclockwise (asviewedfrom under-
sideofgrassshield)with17x19mmscrench.
4. Remove lowerplate. Retainlowerplate,10mmnutandsplit pin
for future use.
5. Be sure upper plate (B) remains on PTO shaft.
6. Thread line head onto PTO shaft by turning it counter clockwise
until head is tight against upper plate (B).
7. Removelockingtool(A).
ASSEMBLY
A
B
WARNING DANGER
Use only ECHO approved attachments for these models. Serious injury may result from the use of non approved
attachment combinations. Read and comply with all safety instructions listed in this manual and attachment manual.
ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which have not
been tested and approved by ECHO for use with these units.

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 13
BLADE INSTALLATION
AllModels.
IMPORTANT
Ifnon-standardmonofilamenthead,METAL/PLASTICbladeorcultivatoretc.isused, THECARBURETORMUST
BE RE-SET or serious engine damage may occur. See "Carburetor Adjustment" pages 27 - 28 and "Specifications"
page 11 of this manual.
WARNING DANGER
You must install a U-Handle Kit and Blade Conversion kit before operating this unit using metal blades, otherwise
serious injury may result.
Install Metal Shield
ToolsRequired: 8mmx10mmOpenEndWrench,Screwdriver,Scrench.
PartsRequired: MetalShield,Bracket,3-5mmx15mmscrewsw/
captivated flat and lockwasher (metal shield to gear housing), 2- 5mm x
8mmscrews,4-5mmnuts,4-5mmlockwashers(brackettoshieldand
bracket to gear housing).
1. If necessary, remove nylon line head and plastic shield.
2. Loosely attach bracket (A) to shield (B) and attach to bottom of
gear housing (C) with screws and nuts provided. Tighten all
attaching hardware.
Install Blade
Tools Required: Locking Tool, scrench.
Parts Required: UpperPlatew/20mmpilot,LowerPlate,10mmNutw/
LHthreads,2mmx25mmSplitPin(cotterpin).
3. Install upper plate (D) on splined PTO shaft. Blade installation
requiresuseof UpperPlate(D) with20mmpilot. Upperplate
with37mmpilotof the SRM-2100 shouldberetainedforuse with
nylon line head.
4. Place Blade(E)over upperplatepilot,install theLowerPlate (F)
and10mmLHnut(G).Tri-CutBlade(H)isinstalledwithGlide
Cup (J).
5. Insert Locking Tool (K) through hole in upper plate and notch in
gear housing to prevent splined PTO shaft from turning. Tighten
nut and secure with Split Pin (L).
EF
G
D
J
H
K
B
C
A
D
L

14
Install Harness Clamp
NOTE
Some models require installation of Harness Clamp. If your unit
does not have a clamp, follow these directions.
Tools Required: Screwdriver,8mmx10mmOpenEndWrench.
Parts Required: Clamp,4mmx18mmHexagonHead,Bolt,Link.
6. Remove shield and gear housing as an assembly.
a. Loosen two (2) screws that clamp the gear housing to the
drive shaft housing.
b. Remove locating screw found at the top of the gear housing.
Pull shield and gear housing assembly from the drive shaft
assembly.
IMPORTANT
Preventflexibledrive cable fromslidingfrom drive shafthousing.
If cable does slide free, clean dirt from cable and lubricate with
lithium based grease prior to re-assembly.
7. Remove front handle.
a. Remove four (4) screws and nuts and handle support from
front handle.
b. Removefronthandle.
8. Installclamp.
- Slightly spread clamp and slide up shaft.
- Install single link using spacer, DO NOT tighten at this time.
9. Install gearbox, shield and front handle.
10. Balanceunit.
a. Put on harness and attach unit to harness.
b. Slide clamp up or down until unit balances with head
approximately2"- 3" fromtheground.
c. Tightenclampscrew.
2 ~ 3"

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 15
THROTTLE LINKAGE AND IGNITION LEADS
Tools Required: 8mmx10mmopenendwrench(allmodels),3mmAllen
Wrench.
1. Close choke and remove air filter cover.
2. Loosen nut (A) and place threaded end of throttle linkage in
bracket slot. Finger tighten nut (A).
3. Place inner cable in slot of carburetor swivel (B) and tighten
nut (A).
4. Check throttle for freedom of movement and make sure it returns
to idle position. If the throttle linkage does not allow the carbure-
tor throttle plate (C) to return to idle against idle screw (D),loosen
linkage nuts; turn throttle linkage nut (A) counter clock wise
until throttle plate (C) just rests against idle screw (D). Hold
linkage nut (A) from turning and tighten other linkage nut.
5. Connect ignition leads (C). SRM-2100 has one connector
terminal pair and one ring terminal which attaches under fan
terminalscrew(C).
6. Install airfilterandcover.
FRONT HANDLE INSTALLATION
Tools Required: Screwdriver.
Parts Required: FrontHandle,HandleSupport,Four(4)5mmx35mm
screws with captivated washers, four (4) 5mm nuts.
1. Position front handle for comfortable operation and secure screws.
A
B C D

16
U-HANDLE INSTALLATION
Tools Required: 8mmx10mmOpenEndWrench,SlottedScrewdriver,
(3mmHexWrenchSRM-2100only.)
Parts Required: U-HandleKit.(SRM-2100)P/N35130454130
NOTE
OnmodelSRM-2110useSteps1,10,11,and 13-17only.
1. Close choke and remove air filter cover.
2. Disconnect ignition stop leads (C).
3. Removeinnerthrottlelinkagefromcarburetorswivel(B).
4. Loosen nut (A) and remove throttle linkage from bracket.
5. Loosen two (2) bolts (D) and pull drive shaft assembly from clutch
case.
6. Loosen two (2) rear handle screws (E) and pull rear handle (F) from
the drive shaft assembly.
7. Loosen four (4) screws and remove front handle (G).
8. PositionLowerU-HandleBracket(H)400mm(15-3/4in.)from
engineend ofdrive shaft. Securewiththree(3)5mmx30mm
bolts.
9. Install harness hook (included with Blade Conversion Kit) for
bladeuse. Position220mm (8-5/8in.)fromengineend ofdrive
shaft assembly. DO NOT tighten at this time.
10. Install upper U-Handle and bracket on lower bracket and secure
withone(1)8mmx55mmbolt(J)andlargecircularwasher.
D
F
GE
J
400 mm (15-3/4 in.)
220 mm
(8-21/32 in.)
ENGINE
END
H

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 17
11. Secure throttle linkage and leads to drive shaft with cable clips
supplied.
12. Install power head and align gear box, power head and U-handles.
Tighten all screws.
13. Place throttle linkage in slot in bracket with one nut (A) and
washer on each side of bracket. Finger tighten both nuts (A).
14. Attach inner throttle cable to swivel (B). Check throttle for freedom
of movement and that wide open throttle / low idle extremes are
adjusted properly. If adjustment cannot be achieved by adjusting
nuts (A), consult with your Echo Dealer for correct adjustment
procedure.
15. Attach ignition leads (C).
16. Installairfilter and cover.
17. Balanceunit.
a. Put on harness and attach unit to harness.
b. Slide clamp (K) up or down drive shaft housing until unit
balanceswithcuttingattachment approximately 2 - 3in.from
ground.
c. Tighten harness clamp screw.
2 - 3 "
K

18
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.
PlasticandNylonBladesRequire"BladeConversionKit,"P/N99922200410
(metal shield and shoulder harness).
Steel/MetalBladesRequire"BladeConversionKit"PLUSa"U-HandleKit."P/N35130454130orCombinationBladeKit
and"U-HandleKit"P/N99944200451.
Choosing the Correct Blade
PRE - OPERATION
OPERATION WITH BLADES
Preparing the Trimmer/Brush Cutter for Blade Use
WARNING DANGER
Blade use DEMANDS specific Brush Cutter configuration. Operation without specified shield and harness can
result in serious personal injury.
Plastic/Nylon Bladesmay be used where ever the nylon line head
is used. DO NOT use this blade for heavy weeds or brush!

GRASS TRIMMER/BRUSH CUTTER
OPERATOR'SMANUAL 19
8 Tooth Weed/Grass Blade P/N 69600120331 is designed for grass,
garden debris and thick weeds. DO NOT use this blade for brush or
heavywoodygrowth,3/4"in.(19mm)diameterorlarger.
Brush/Clearing Blade P/N 69500120331 is designed for cutting brush
and woody growth up to 76 mm (3" in.) diameter.
Use Shoulder/Waist Harness P/N 99944200200 Use of the Shoulder/
Waist Harness is recommended for ALL Trimmer/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 preventing blade contact with the
operators 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.

20
FUEL
Fuel Requirements
Gasoline - Use 89 Octane [ ] gasoline or gasohol known to be good
quality. Gasohol may contain up to 10% Ethyl (grain) alcohol or 15%
MTBE(methyltertiary-butylether).Gasoholcontainingmethyl(wood)
alcohol is NOT approved.
TwoStrokeOil-Atwo-strokeengineoilmeetingISO-L-EGDStandard
(ISO/CD13738),mustbeused.EchobrandPremium50:1oilmeetsthis
standard. Engine problems due to inadequate lubrication caused by
failuretouseanISO-L-EGDapprovedoil,suchasEchoPremium50:1
Two-strokeOil, willvoid thetwo-strokeenginewarranty. (Emission
related parts only are covered for two years, regardless of two-stroke
oil used, per the statement listed in the EPA Phase I/California Emission
DefectWarrantyExplanation.)
IMPORTANT
EchoPremium2-StrokeOilmaybemixedat50:1ratioforapplica-
tion in all Echo engines sold in the past regardless of ratio speci-
fied in those manuals.
Mixing Instructions
1. Fill an approved fuel container with half of the required amount of
gasoline.
2. Add 2-stroke oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Addremaininggasolineandremix.
5. Install fuel container cap and wipe any spilled fuel from container
and surrounding area.
Handling Fuel
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling, or serious personal injury may result.
• Use an approved fuel container.
• DONOTsmokenearfuel.
• DONOTallow flamesorsparks nearfuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel
caps slowly allowing pressure to equalize.
• NEVERrefuelaunitwhen theengineis HOT!
• NEVERrefuela unitwiththe enginerunning.
• DONOTfillfueltanksindoors.ALWAYSfillfueltanks
outdoors over bare ground.
• Securely tighten fuel cap after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
R + M
2IMPORTANT
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.ContactyourECHOdealerfor
orderinginformation.
After refueling;
• Wipe any spilled fuel from the unit.
• Moveatleast3m (10ft.)from refueling
location before starting the engine.
After use;
• DO NOT store a unit with fuel in its tank.
Leaks can occur. Return unused fuel to an
approved fuel storage container.
Storage -
Fuel storage laws vary by locality. Contact
your local government for the laws affecting
your area. As a precaution, store fuel in an
approved, air tight container. Store in a well
ventilated, unoccupied building, away from
sparks and flames. Do not store fuel longer
than 30 days.
IMPORTANT
Storedfuelages. Do notmixmorefuel
than you expect to use in thirty (30)
days, ninety (90) days when a fuel
stabilizerisadded.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container
thoroughly before each use.