Echo Trimmer SRM 2100SB User Manual

Grass Trimmer/Brush Cutter  
Operator's Manual  
MODELS, Type 1E  
SRM - 2100SB  
Serial Number 0508702 - 0533423  
SRM - 2400SB  
Serial Number 0504696 - 0563000  
WARNING  
The engine exhaust from this  
product contains chemicals known  
to the State of California to cause  
cancer, birth defects or other  
reproductive harm.  
WARNING  
DANGER  
Readrulesforsafeoperationandinstructionscarefully. ECHOprovidesanOperator'sManualanda  
SafetyManual. Bothmustbereadandunderstoodforproperandsafeoperation.  
89861056732  
1/99  
X7532277102  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
3
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.  
IMPORTANT The enclosed message  
provides information necessary for the  
protection of the unit.  
The circle with the slash symbol means whatever is shown  
within the circle is prohibited.  
NOTE This enclosed message provides tips for  
use, care and maintenance of the unit.  
SAFETY  
GENERAL DESCRIPTION  
IMPORTANT  
See Description and Specification sections for full description and illustration of model variation in power head,  
handle type, harness and debris shield/cutter head.  
CUTTINGATTACHMENT  
(NYLONLINEHEADSHOWN)  
FRONT  
HANDLE  
COUPLER  
POWERHEAD  
(W/DECALS)  
STOP  
SWITCH  
LOWERDRIVE  
SHAFT  
(W/DECALS)  
DEBRISSHIELD  
(W/DECALS)  
UPPER DRIVE  
SHAFT  
THROTTLE  
TRIGGER  
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4
DECALS  
DEBRIS SHIELD DECAL  
Locate these safety decals on your unit. The complete unit illustration,  
found in the "DESCRIPTION" section, will help 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.  
s  
Shield  
Plastic Debris  
Shield  
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.  
Maintaina15M(50ft.)radius,DANGERZONE surroundingthe  
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  
yourECHOdealerorbywriting:ECHO,INCORPORATED,400  
OAKWOODRD.,LAKEZURICH,IL 60047.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
5
Symbol  
description/application  
Symbol  
description/application  
Symbol form/shape  
Symbol form/shape  
INTERNATIONAL SYMBOLS  
DO NOT allow  
flames or sparks  
near fuel.  
Wear slip resistant  
foot wear.  
Symbol  
description/application  
Symbol  
Symbol form/shape  
Symbol form/shape  
description/application  
Read and understand  
Operator's Manual.  
Fuel and oil mixture  
Finger Severing  
Ignition  
ON/OFF  
Emergency stop  
Wear eyes, ears and  
head protection  
Engine choke  
control.  
Primer bulb  
Wear hand  
protection. Use  
two handed.  
Hot  
Surface  
Carburetor adjustment  
- High speed mixture  
Carburetor adjustment  
- Low speed mixture  
DO NOT smoke  
near fuel.  
Carburetor adjustment  
- Idle speed  
Safety/Alert  
EQUIPMENT  
Before operation a complete check of the unit must be performed;  
• 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 handle and shoulder strap/or shoulder/waist harness  
are adjusted for safe, comfortable operation. See Assembly Section  
for proper adjustment.  
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6
FUEL  
WARNING  
DANGER  
FuelisVERYflammable.Useextremecarewhenmixing,storingor  
handling or serious personal injury may result.  
• Use an approved fuel container.  
• DONOTsmokenearfuel.  
• DO NOT allow flames or sparks near fuel.  
• Fuel tanks/cans may be under pressure. Always loosen fuel caps  
slowly allowing pressure to equalize.  
• NEVER refuel a unit when the engine is HOT!  
• NEVER refuel a unit with the engine running.  
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks 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.  
After Refueling;  
• Wipe any spilled fuel from the unit.  
• Move at least 3 M (10 ft.) from refueling location before starting.  
3M (10 ft.)  
After Use;  
• DO NOT store a unit with fuel in its tank. Leaks can occur. Return  
unused fuel to an approved fuel storage container.  
PERSONAL CONDITION & 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,  
- if you are taking medication,  
- if you have taken alcohol or drugs.  
Operate unit only if you are physically and mentally well.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
7
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  
Brush Cutter handles. 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,SCARVES,JEWELRY.  
Wear sturdy work shoes with non-skid 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.  
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8
SAFE OPERATION  
Determine Operation Area  
15M  
(50 ft.)  
- Provide all operators of this equipment with the operator's manual and  
instructions for safe operation.  
- Review the area to be trimmed. Look for hazards that could  
contribute to unsafe conditions.  
- Spectators and fellow workers must be warned, and children and  
animals prevented from coming nearer than 15M (50 ft.) while  
the trimmer is in use.  
Operation  
UseProperClothing&Equipment  
- Before starting the unit, equip yourself and any other personworking  
within the 15M (50 ft.) Safety Zone with the required Protective  
Equipment and clothing.  
AvoidHotSurfaces  
- During operation, the complete unit, especially the drive shaft  
housing and the bearing housing may become very hot, too hot to  
touch. Avoid contact during and immediately after 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.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
9
EXTENDED OPERATION/EXTREME CONDITIONS  
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  
recommended because the minimum exposure which might trigger 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  
exercises 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.  
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 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  
movement.  
• 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.  
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10  
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.  
CONTENTS  
Contents List  
MODELS  
Items  
SRM-2100SB  
SRM-2400SB  
1 - Power Head w/Upper Drive Shaft Assembly  
1 - Lower Drive Shaft Assembly  
1 - Plastic Bag (co-pack)  
- 1, Operator's Manual  
- 1, Safety Manual  
- 1, Warranty Registration Card  
- 1, Limited Warranty Statement  
- 1, Plastic shield  
- 1, Tool Bag  
--1, 8 mm x 10 mm wrench  
--1, scrench  
--1, locking tool  
- 1, Nylon Trimmer Head  
- 1, Safety Glasses  
- 1, 2-Stroke Oil Sample, 2.6 oz.  
- 1, Front Handle (L.H.) Assembly  
-- 1, Plastic Bag  
---1, shield plate  
--- 3, 5 mm x 15 mm screws (shield mounting)  
BLADE TERMS & DEFINITIONS  
BladeConvertible  
Models (SRM-2100SB, SRM-2400SB) can be converted to utilize blades. Plastic/nylon blades require a, "Blade Conver-  
sion Kit", which includes a shoulder harness, and steel shield with necessary attaching hardware. Steel/metal blades also  
require the, "Blade Conversion Kit", plus a "U-Handle Kit" or a Combo Kit.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
11  
EMISSION CONTROL  
Type 1E Models  
The emission control system for this engine is EM  
(EngineModification).  
IMPORTANTENGINEINFORMATION  
ENGINE FAMILY: YEHXS.0254CB  
DISPLACEMENT: 25.4 CC  
THIS ENGINE MEETS U.S. EPA PH1 EMISSION  
REGULATIONS FOR SMALL NON ROAD ENGINES.  
REFER TO OWNER'S MANUAL FOR MAINTENANCE  
SPECIFICATIONS AND ADJUSTMENTS.  
EmissionControlLabellocatedonEngine  
(EXAMPLEONLY,informationonlabelvariesby  
FAMILY).  
14  
2
1
15  
22  
21  
16  
20  
17  
23  
18  
19  
9
8
7
6
5
4
3
10  
12  
11  
13  
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12  
1. OPERATOR'S MANUAL - Included in plastic bag (co-pack). Read before operation and keep in a safe place for future  
reference, i.e., operation, maintenance, storage and specifications.  
2. SAFETY MANUAL - Included in plastic bag (co-pack). Read before operation to learn proper, safe operating techniques.  
Keep in a safe place for future reference.  
3. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter.  
4. GRIP -Rear(righthand)handle.  
5. STOP SWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to RUN,  
BACKtoSTOP.  
6. UPPERDRIVESHAFTASSEMBLY-IncludestheRear(RightHand)GripAssembly,Front(LeftHand)HandleAssem-  
bly, Upper Flexible Drive Cable, Drive Shaft Assembly Coupler and Power Head.  
7. FRONT HANDLE - The front (loop) handle must be assembled to the Upper Drive Shaft Assembly (some models) and  
must be positioned for proper cutting attitude and operator comfort.  
8. DRIVESHAFTCOUPLER-IncludesLocatorPinandClampingKnob.  
9. NYLONCUTTINGATTACHMENT-Containsreplaceablenylontrimminglinethatadvanceswhenthetrimmerheadis  
tapped against the ground while the head is turning at normal operating speed.  
10. CUT-OFF KNIFE - Automatically trims line to the correct length: 5" after head is tapped on the ground. If trimmer is  
operated without a cut-off knife the line will become too long, the engine will overheat and engine damage may occur.  
11. PLASTICDEBRISSHIELDASSEMBLY-Includedinplasticbag(co-pack). MUST beinstalledonunitbeforeuse, 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.  
12. LOWERDRIVESHAFTASSEMBLY-IncludestheDebrisShieldAssembly,GearHousingAssembly,LowerFlexible  
Drive Cable, Nylon Cutting Attachment and Safety Decal.  
13. THROTTLETRIGGER-Springloadedtoreturntoidlewhenreleased. Duringacceleration, presstriggergraduallyfor  
best operating technique.  
14. ARM REST - Provides arm rest during operation and protects arm from the hot engine.  
15. SPARKPLUG-Providessparktoignitefuelmixture.  
16. MUFFLER/SPARKARRESTOR-Themufflercontrolstheexhaustnoisewhilethesparkarrestorpreventshot, glowing  
particles of carbon from leaving the muffler where they could possibly start a fire.  
17. FUELTANK-Containsfuelandfuelfilter.  
18. RECOILSTARTERHANDLE-Pullrecoilstarterhandleslowlyuntilstarterengages, thenquicklyandfirmly. When  
engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.  
19. FUEL TANK CAP - Covers and seals fuel tank opening.  
20. PRIMER BULB - Pumping primer bulb before starting engine draws fresh fuel from the fuel tank priming the carburetor for  
starting. Pump the bulb 10 times until fuel is visible in clear fuel return line.  
21. AIRCLEANER-Containsreplaceablefilterelement.  
22. 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 the "RUN" position to open choke.  
23. SAFETYVIDEO-(Notincludedwithunit)P/N99922202540Englishversiononlyisavailableatacostof$5.00fromECHO,  
INC. or any authorized ECHO dealer. The video overviews safety precautions and proper operating techniques and is  
supplemental to the Safety Manual. Read and understand the Safety Manual for complete information on safe operation.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
13  
SPECIFICATIONS  
M OD E L  
SR M -2100S B  
SR M -2400SB  
1500 m m (59 in.)  
Shaft Length  
Unit W idth  
Unit Height  
330 m m (13.0 in.)  
300 mm (11.8 in.)  
5.4 kg (11.9 lb.)  
360 mm (12.4 in.)  
5.6 kg (12.4 lb.)  
W eight (dry) w/cutting  
attachm ent  
Engine Type  
Air cooled, two-stroke, single cylinder gasoline engine  
Bore  
32.2 m m (1.27 in.)  
34.0 m m (1.34 in.)  
26.0 m m (1.04 in.)  
Stroke  
D isplacem ent  
Exhaust System  
21.2 cc (1.29 cu. in.)  
23.6 cc (1.44 cu. in.)  
Spark Arrestor Muffler  
C arburetor  
Zam a D iaphragm model C 1U w/purge  
Walbro D iaphragm model W YJ w/purge  
Ignition System  
C D I (capacitor discharge ignition)  
Spark Plug  
Fuel  
NGK B PM -7A Gap 0.65 m m (0.026 in.)  
NGK B PM -7Y Gap 0.65 m m (0.026 in.)  
M ixed (Gasoline and Two-stroke Oil)  
Fuel/Oil Ratio  
50:1 EC HO High P erform ance, two-stroke air cooled engine oil  
89 Octane unleaded. D O NOT use fuel containing m ethyl alcohol,  
m ore than 10% ethyl alcohol or 15% M TBE.  
Gasoline  
Oil  
50:1 EC HO High P erform ance, two-stroke air cooled engine oil  
0.4 lit. (14.0 US fl. oz.)  
Fuel Tank C apacity  
Starter S ystem  
Autom atic Recoil Starter  
C lutch  
C entrifugal Type  
D rive S haft (upper & lower)  
Rotating D irection  
1/4 in. Flex S haft  
C ounter clockwise viewed from top  
C utting Attachment  
Handles*  
Nylon line head (2-line) with .095 in. C ross FireTM line capacity 13 m (40 ft.)  
Front - Loop, Rear - Grip, when operating with standard line head  
Shoulder Harness  
Idle Speed (RP M )  
Optional  
2700 - 3300  
W ide Open Throttle  
Speed (**RPM )  
8300 - 9500  
* Install and use U-Handle when operating any model with blade.  
**The RPM range shown applies for all attachments. Refer to your attachment Operator's Manual "Specifications"  
section for proper RPM specifications.  
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14  
ASSEMBLY  
ECHO APPROVED OPTIONAL ATTACHMENTS  
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.  
Model  
SRM-2100SB  
SRM-2400SB  
SRM Edger Attachment #99944200470  
SRM Cultivator Attachment #99944200510  
SRM Trimmer Attachment #99944200540  
SRM Hedge Clipper Attachment  
#99944200480  
SRM Power PrunerTM Attachment  
#99944200530  
ProSweepTM Attachment #99944200550  
ProThatchTM Attachment #99944200560  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
15  
POWER HEAD SHAFT/LOWER SHAFT ASSEMBLY  
Tools Required: None  
Parts Required: Power Head Shaft, Lower Shaft Assembly  
B
1. Set Power Head/Shaft Assembly on a level surface.  
2. Loosen clamping knob (A).  
A
3. Pull locator pin (B) and rotate counter clockwise 1/4 turn to lock  
out position.  
C
D
4. Carefully fit lower drive shaft assembly into coupler (C) to decal  
assembly line (D), making sure that the inner lower drive shaft  
engages into the upper drive shaft mount.  
NOTE  
Lower bearing housing and head assembly must be in line with the  
engine.  
B
5. Rotate locator pin (B) 1/4 turn clockwise to engage lower drive shaft  
hole. Insure locator pin is fully engaged by gently twisting lower  
drive shaft. Locator pin should snap flush in coupler. Full engage-  
ment will prevent further shaft rotation.  
C
A
6. Secure lower shaft assembly to coupler by tightening clamping  
knob (A).  
PLASTIC SHIELD 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. Snap the shield on the bottom of the bearing housing flange.  
2. Place shield plate on shield, align holes and install three (3) screws.  
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16  
NYLON LINE HEAD INSTALLATION  
Tools Required: Head Locking Tool  
Parts Required: NylonLineHead.  
1. Align locking hole in upper plate (B) with notch in edge of gear  
housing and insert head locking tool (A).  
2. Remove plastic sleeve from P.T.O. shaft (C).  
3. Be sure upper plate (B) remains on P.T.O. shaft.  
4. Thread line head onto P.T.O. shaft by turning it counter clockwise  
until head is tight against upper plate (B).  
5. Removelockingtool(B).  
FRONT HANDLE INSTALLATION  
Tools Required: Screwdriver.  
Parts Required: Front Handle Assembly  
1. Assemble front handle on drive shaft, DO NOT tighten screws yet.  
2. Position front handle for comfortable operation and secure screws.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
17  
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. Follow installation instructions included in optional kits.  
PlasticandNylonBladesRequire"BladeConversionKit,"P/N99922200410  
(metal shield [A] and shoulder harness [B]).  
B
A
Steel/MetalBladesRequire:  
SRM-2100SB"CombinationBlade"and"U-HandleKit"P/N99944200451.  
SRM-2400SB"CombinationBlade"and"U-HandleKit"P/N99944200521.  
C
Choosing the Correct Blade  
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.  
Plastic/Nylon Blades may be used where ever the nylon line head  
is used. DO NOT use this blade for heavy weeds or brush!  
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18  
8ToothWeed/GrassBladeP/N69600120331isdesignedforgrass,  
garden debris and thick weeds. DO NOT use this blade for brush or  
heavy woody growth, 3/4" in. (19 mm) diameter or larger.  
Brush/Clearing Blade P/N 69500120331 is designed for cutting brush  
and woody growth up to 3" in. (76 mm) diameter.  
UseShoulder/WaistHarness P/N99944200200TheShoulder/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  
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.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
19  
FUEL  
Fuel Requirements --  
Gasoline - Use 89 Octane [R + M ] gasoline known to be good quality.  
2
Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE  
(methyl tertiary-butyl ether). Gasoline containing methanol (wood  
alcohol) is NOT approved.  
TwoStrokeOil-A two-stroke engine oil meeting ISO-L-EGD Standard  
(ISO/CD13738), mustbeused. EchobrandPremium50:1oilmeetsthis  
standard. Engine problems due to inadequate lubrication caused by  
failuretouseanISO-L-EGDapprovedoil, suchasEchoPremium50:1  
Two-stroke Oil, 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 EPA Phase I/California Emission  
DefectWarrantyExplanation.)  
Mixing - Follow directions on the oil container.  
Handling Fuel --  
WARNING  
DANGER  
FuelisVERYflammable.Useextremecarewhenmixing,storingor  
handling or serious personal injury may result.  
• Use an approved fuel container.  
• DONOTsmokenearfuel.  
• DO NOT allow flames or sparks near fuel.  
• Fuel tanks/cans may be under pressure. Always loosen fuel caps  
slowly allowing pressure to equalize.  
• NEVER refuel a unit when the engine is HOT!  
• NEVER refuel a unit with the engine running.  
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks out  
doors 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.  
After Refueling –  
Wipe any spilled fuel from the unit.  
Move at least 3M (10 ft.) from refueling location before starting.  
After Use –  
3M (10 ft.)  
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.  
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20  
IMPORTANT  
S M T W T F  
S
7
Stored fuel ages. Do not mix more fuel than you expect to use in  
thirty (30) days, ninety (90) days when a fuel stabilizer is added.  
1
8
2
3
4 5 6  
9 10 11 12 13 14  
15 16 17 18 19 20 21  
22 23 24 25 26 27 28  
29 30 31  
IMPORTANT  
Stored two-stroke fuel may separate. ALWAYS shake fuel con-  
tainer thoroughly before each use.  
EQUIPMENT CHECK  
Before operation a complete check of the unit must be performed;  
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 handle and shoulder strap or shoulder/waist  
harness are adjusted for safe, comfortable operation. See Assembly  
section for proper adjustment.  
DETERMINE OPERATION AREA  
Review the area to be trimmed. Look for hazards that could contrib-  
ute to unsafe conditions.  
15M  
(50 ft.)  
Spectators and fellow workers must be warned, and children and  
animals prevented from coming nearer than 15M (50 ft.) while the  
trimmerisinuse.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
21  
OPERATION  
• Provide all operators of this equipment with the operator's manual and  
instructions for safe operation.  
• Before starting the unit, equip yourself and any other person  
working within the 15M (50 ft.) Safety Zone with the required  
Protective Equipment and clothing.  
• During operation, the complete unit, especially the drive shaft  
housing and the bearing housing may become very hot, too hot to  
touch. Avoid contact during and immediately after operation.  
STARTING COLD ENGINE  
A
WARNING  
DANGER  
The cutting attachment should not rotate at idle. If attachment  
rotates, readjust carburetor according to "Carburetor Adjustment"  
instructions in this manual or see your ECHO Dealer, otherwise  
serious personal injury may result.  
All Models  
1. Stop Switch - Start/Run.  
Move stop switch button (A) forward away from the STOP position.  
2. Choke Lever - Cold Start.  
Move choke (B) to “Cold Start” Position.  
B
3. PrimerBulb-Prime.  
Pumpprimerbulb(C)10times. Fuelwillbevisibleandflowfreelyin  
the clear fuel tank return line.  
SRM-2100SB  
C
WARNING  
DANGER  
Inspect starting area for hazards such as rocks, glass, debris etc.  
which could be contacted by the cutting attachment when starting.  
Keep helpers and bystanders at least 15 M (50 ft.) from starting  
area, otherwise serious personal injury may result.  
B
C
SRM-2400SB  
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22  
SRM-2100SB  
4A. Start  
Lay the trimmer on a flat clear area. Firmly grasp rear handle grip  
and throttle lockout with left hand and fully depress throttle trigger  
to wide open position. Rapidly pull recoil starter handle/rope (D)  
untilenginefires(ormaximumfive[5]pulls).  
5A. After engine fires (or five [5] pulls), move choke to “Run” posi-  
tion. Hold throttle trigger fully depressed and pull recoil starter  
handle/rope (D) until engine starts and runs. Release throttle trigger  
and allow unit to warm up at idle for several minutes.  
D
SRM-2400SB  
4B. Start - Pull Rope.  
Lay the trimmer on a flat clear area and pull the recoil starter  
handle (D) until engine fires.  
5B. Open Choke - Run.  
Move the choke to the OPEN - RUN position. Restart engine if  
necessary and allow to warm up running at idle for several  
minutes.  
All Models  
SRM-2400SB  
NOTE  
If engine does not start with choke in “Run” position after 5 pulls,  
repeat instructions 4 (A/B) and 5 (A/B).  
6. After engine warm up, gradually depress throttle trigger to increase  
engine RPM to operating speed.  
STARTING WARM ENGINE  
All Models  
The starting procedures is the same as Cold Start except DO NOT close  
the choke.  
A
WARNING  
DANGER  
The cutting attachment should not rotate at idle. If cutting attach-  
ment moves, readjust carburetor according to "Carburetor Adjust-  
ment" instructions in this manual or see your ECHO Dealer,  
otherwise serious personal injury may result.  
1. Stop Switch - Start/Run. Move stop switch button (A) forward away  
from the STOP position.  
2. Primer - Pump Bulb. Pump primer bulb (C) until fuel is visible in the  
"Clear" fuel return line.  
C
D
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
23  
3. Start - Pull Rope. Lay the trimmer on a flat clear area and pull the  
recoil starter handle (D) until the engine fires.  
NOTE  
If engine does not start after 5 pulls, use Cold Start Procedure.  
STOPPING ENGINE  
1. Release Throttle. Allow engine to idle for a minute.  
A
2. Stop Switch - Stop. 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.  
Have your ECHO dealer repair stop switch before using trimmer  
again.  
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 task is not listed, see your ECHO dealer for repairs.  
SKILL LEVELS  
Level1=  
Level2=  
Level3=  
Easy to do. Most required tools come with unit.  
Moderate difficulty. Some specialized tools may be required.  
Experiencerequired.Specializedtoolsarerequired.  
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.  
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24  
MAINTENANCE INTERVALS  
3
6
REQ'D  
SKILL  
LEVEL  
DAILY OR  
BEFORE  
USE  
YEARLY  
600  
HOURS  
COMPONENT/  
SYSTEM  
MAINTENANCE  
PROCEDURE  
EVERY  
REFUEL  
MONTHS  
OR 90  
HOURS  
MONTHS  
OR 270  
HOURS  
Recommended Echo Dealer Maintenance Procedures  
Inspect/Clean/Decarbon  
Do-It-Yourself Maintenance Procedures  
Cylinder Exhaust Port  
3
I / C  
R*  
Air Filter  
Inspect/Clean/Replace  
Inspect/Clean  
Inspect/Replace  
Inspect/Replace  
Inspect/Clean  
Inspect/Replace  
Grease  
1
2
1
1
2
2
2
I / C  
I / C  
Choke  
Fuel Filter  
I
I
I / R *  
Fuel System, leaks  
Cooling System  
Muffler Spark Arrestor  
I *  
I
I / C  
I / R *  
I (1)  
Drive Shaft (Flex  
Cable Models)  
Gear Housing  
Grease  
2
1
2
1
I (2)  
I / C  
Recoil Starter Rope  
Spark Plug  
Inspect/Clean  
Inspect/Clean  
Inspect/Tighten/Replace  
I / C *  
I / R *  
R *  
Screws/Nuts/Bolts  
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN  
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the frequency of required  
maintenance.  
MAINTENANCE PROCEDURE NOTES:  
(1) Apply ECHO® LUBETM every 25 hours of use.  
(2) Apply ECHO® LUBETM every 50 hours of use.  
* All recommendations to replace are based on the finding of damage or wear during inspection..  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
25  
AIR FILTER  
Level1.  
Tools required: Cleaning brush, 1" or 2" medium bristle paint brush.  
Parts required:  
SRM-2100SB90008REPOWERTMAIR&FUELFILTERKIT.  
SRM-2400SB90030REPOWERTMAIR&FUELFILTERKIT.  
SRM-2100SB  
SHOWN  
1. Close choke (Cold Start Position). This prevents dirt from entering  
the carburetor throat when the air filter is removed. Brush accumu-  
lated dirt from the air cleaner area.  
2. Remove the air cleaner cover. Clean and inspect the element for  
damage. If element is fuel soaked and very dirty, replace.  
3. If element can be cleaned and reused, be certain it:  
•still fits the cavity in the air cleaner cover.  
•is installed with the original side out.  
NOTE  
Carburetor adjustment may be needed after air filter cleaning/  
replacement.  
FUEL FILTER  
Level1.  
Tools required: 203-254 mm ( 8 - 10 in.) length of wire with one end bent  
into a hook, Clean rag, funnel, and an approved fuel container.  
Parts required:  
SRM-2100SB90008REPOWERTMAIR&FUELFILTERKIT.  
SRM-2400SB90030REPOWERTMAIR&FUELFILTERKIT.  
WARNING  
DANGER  
FuelisVERYflammable.Useextremecarewhenmixing,storingor  
handling, otherwise serious personal injury may result.  
1. Use a clean rag to remove loose dirt from around fuel cap and  
empty fuel tank.  
2. Use the “fuel line hook” to pull the fuel line and filter from the tank.  
3. Remove the filter from the line and install the new filter.  
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26  
SPARK PLUG  
Level2.  
Tools required: Scrench (combination socket wrench and screwdriver),  
Feeler gauge (preferably a wire gauge) , Brush.  
Parts Required: Spark Plug, SRM-2100SBNGKBPM-7A  
SRM-2400SBNGKBPM-7Y  
1. Remove spark plug and check for fouling, worn and rounded  
center electrode.  
2. Clean the plug or replace with a new one. DO NOT sand blast to  
clean. Remaining sand will damage engine.  
3. Adjust spark plug gap by bending outer electrode.  
4. Tightensparkplugto145-155kg/cm(125-135in.lb.).  
COOLING SYSTEMS CLEANING  
Level3.  
Tools required: Cross Head Screwdriver, 3 mm Hex Wrench, Pointed  
Wood Stick, Cleaning brush (1" - 2" medium bristle paint brush).  
Parts Required: None if you are careful.  
IMPORTANT  
To maintain proper engine operating temperatures, cooling air must  
pass freely through the cylinder fin area. This flow of air carries  
combustion heat away from the engine.  
Overheating and engine seizure can occur when:  
• Air intakes are blocked, preventing cooling air from reaching the  
cylinder.  
• Dust and grass build up on the outside of the cylinder. This build up  
insulates the engine and prevents the heat from leaving.  
Removal of cooling passage blockages or cleaning of cooling fins is  
considered “Normal Maintenance”. Any failure attributed to lack of  
maintenance is not warranted.  
A
1. Remove spark plug lead and throttle linkage end from the carburetor  
swivel.  
2. Remove the three screws that retain the engine cover (A). Two at the  
top of the recoil starter, one in the arm rest. Lift the cover from the  
engine.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
27  
3. Use the wooden stick or brush to remove dirt form cylinder fins.  
IMPORTANT  
Do not use a metal scraper to remove dirt from the cylinder fins.  
4. Remove grass and leaves from the grid between the recoil starter and  
fueltank.  
5. Assemble components in reverse order.  
NOTE  
When installing the engine cover, be certain the tab of the metal  
deflector shield is in the slot of the engine cover.  
EXHAUST SYSTEM  
Spark Arrestor Screen  
Level2.  
Tools required: Cross Head Screwdriver, 3 mm Hex Wrench, Soft Metal  
Brush, Wooden Carbon Scraper.  
Parts Required: ScreenP/N14586240630,GasketLidP/N14586642031  
1. Remove engine cover (A). See “Cleaning Cooling System” pages  
26 & 27 for step by step instructions.  
2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from  
entering cylinder.  
3. Remove spark arrestor screen cover (B), screen holder (C), gasket  
(D) and screen (E) from muffler body.  
4. Clean carbon deposits from screen and muffler components.  
5. Replace screen if it is cracked, plugged or has holes burned through.  
6. Assemble components in reverse order  
E
D
C
B
NOTE  
When installing the engine cover, be certain the tab of the metal  
deflector shield is in the slot of the engine cover.  
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28  
CARBURETOR ADJUSTMENT  
SRM-2100SB Emission Models  
Level2.  
Toolsrequired: Screwdriver,Tachometer(ECHOP/N99051130017)  
Parts required: None.  
NOTE  
Every unit is run at the factory and the carburetor is set in compli-  
ance with EPA Phase 1 and California Emission Regulations. In  
addition, the carburetor is equipped with HI and LO needle adjust-  
ment limiters that prevent settings outside acceptable limits.  
1. Before adjusting the carburetor, clean or replace the air filter and  
spark arrester screen.  
C
2. Trimmer line must be extended to the cut-off knife.  
B
3. Start engine and run for several minutes to reach operating tempera-  
ture.  
A
4. Stop engine. Turn HI speed needle (C) CCW (counter clockwise) to  
stop. Turn LO speed needle (B) midway between full CCW and CW  
(clockwise) stops.  
5. Idle Speed Adjustment.  
• Start engine and turn “idle” speed adjustment screw (A) CW  
until the cutting attachment begins to turn, then turn the screw  
CCW until cutting attachment stops turning. Turn screw CCW  
an additional 1/4 turn.  
6. Accelerate to full throttle for 2-3 seconds to clear excess fuel from  
engine then return to idle. Accelerate to full throttle to check for  
smooth transition from idle to full throttle. If engine hesitates, turn  
LO needle (B) CCW an additional 1/8 turn and repeat acceleration.  
Continue adjusting until smooth acceleration results.  
SRM-2100SB  
7. Check HI speed RPM at W.O.T. (Wide Open Throttle). HI speed  
RPM should be set to specifications found on page 13 "Specifica-  
tions" of this manual.  
C
8. Check idle speed and reset if necessary. If a tachometer is available,  
idle speed should be set to the specification found on page 13  
"Specifications" of this manual.  
WARNING  
DANGER  
When carburetor adjustment is completed, the cutting attachment  
should not turn at idle, otherwise serious personal injury may result.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
29  
CARBURETOR ADJUSTMENT  
SRM-2400SB Emission Models  
Level2.  
Toolsrequired: Screwdriver,Tachometer(ECHOP/N99051130017).  
Parts required: None.  
NOTE  
Every unit is run at the factory and the carburetor is set in compli-  
ance with EPA Phase 1 and California Emission Regulations. This  
carburetor does not have acceleration and high speed adjustment  
needles. Do not attempt to use carburetor adjustment procedures  
provided in the Warranty/Emissions Booklet.  
1. Check idle speed and reset if necessary. If a tachometer is available,  
idle speed screw (A) should be set to the specifications found on  
page 13 "Specifications" of this manual. Turn idle screw (A)  
clockwise to increase idle speed; counter clockwise to decrease idle  
speed.  
WARNING  
DANGER  
When carburetor adjustment is completed, the cutting attachment  
should not turn at idle, otherwise serious personal injury may result.  
SRM-2400SB  
A
LUBRICATION  
Level1.  
Tools Required: 8 mm Open End Wrench, Screwdriver, Clean Rag  
Parts Required: Lithium Base Grease.  
Gear Housing  
1. Clean all loose debris from gear box.  
2. Remove plug (A) and check level of grease.  
3. Add grease if necessary, DO NOT over fill.  
A
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30  
Drive Shaft (Lower)  
IMPORTANT  
Lower and upper drive shaft must be lubricated with high tempera-  
ture automotive grease every 25 hours of operation, otherwise  
drive shaft assembly overheating and failure can result.  
A
B
1. Loosen two clamping bolts (A) and remove locator screw (B).  
2. Remove gear case assembly from lower drive shaft housing.  
3. Remove lower flex drive cable, wipe clean and apply a thin coating of  
1/2 oz. [15 ml] of high temperature automotive grease.  
4. Install flex drive cable making sure inner lower flex cable engages  
into the upper drive shaft mount.  
Drive Shaft (Upper)  
1. Remove coupler from upper drive shaft assembly by loosening  
clamping screw (C) and removing set screw (D).  
2. Remove upper flex drive cable, wipe clean and apply a thin coating  
of 15 ml (1/2 oz.) of high temperature automotive grease.  
3. Install flex drive cable. Make sure that the flex cable engages into the  
clutch mount and also into the coupler mount.  
4. Install set screw (D) and tighten clamping screw (C).  
C
D
5. Align locator hole in gear case with hole in lower drive shaft housing  
and install gear case.  
NOTE  
Locator holes will not line up until lower flex drive cable is properly  
engaged in inner square socket of gear case.  
6. Install locator screw (B) and tighten. Tighten clamping bolts (A).  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
31  
NYLON LINE REPLACEMENT  
Level1.  
Tools required: Head locking tool (if head is to be removed)  
PartsRequired: ECHO0.095"NylonTrimmerLine12m(40ft.)long.  
1. Hold drum (A) and turn spool (B) CW (clockwise) until it stops.  
Pull spool from drum. DO NOT push in on spool when turning.  
2. Use one piece of new nylon line (C) 12 m (40 ft.) long and thread  
through the molded loop (D) on the spool. Pull line tight and  
adjust so one end is 15 cm (6 in.) longer than the other.  
3. Hold the spool, opening toward you. Place index finger between  
the two strands and wind line, tightly and evenly, in direction of  
arrowmarked"CC".  
4. Stopwhenapproximately15-20cm(6"-8")line(C)remainsand  
place ends of line in notches (E) in spool (B).  
5. Feed ends of line through housing eyelets (F) and place spool (B)  
over drive (G). Align pegs (H) on drive with notches in spool and  
push spool into drum.  
6. Pull on both lines until they come free from notches (E) in spool.  
7. Hold drum (A) firmly and turn spool (B) CCW (counterclockwise)  
until it stops. DO NOT push in on spool when turning.  
8. Pull both lines out and trim to cut-off knife length.  
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32  
SHARPENING METAL BLADES  
Three styles of metal blades are approved for use on the ECHO Brush  
Cutter. The 8-tooth blade can be sharpened during normal maintenance.  
The clearing blade and 80 tooth blade require professional service.  
Before sharpening, CLOSELY inspect blade for cracks (look at the  
bottom of each tooth and the center mounting hole closely), missing  
teeth and bending. If ANY of these problems are discovered, replace  
the blade.  
When sharpening a blade, always remove the same amount of materials  
from each tooth to maintain balance. A blade that is not balanced will  
cause unsafe handling due to vibration and can result in blade failure.  
8-tooth Blade  
Tool required: Flat file (preferred). Electric grinder if special care is  
used. Round (rat tail) file for gullet (radius).  
1. File each tooth at a 30 degree angle a specific number of times,  
eg. 4 strokes per tooth. Work your way around the blade until  
all teeth are sharp.  
2. DO NOT file the 'gullet' (radius) of the tooth with the flat file.  
The radius must remain. A sharp corner will lead to a crack and  
bladefailure.  
IMPORTANT  
If an electric grinder is used, use care not to overheat teeth, do not  
allow tips/tooth to glow red or turn blue. DO NOT place blade in  
cooling water. This will change the temper of the blade and could  
result in blade failure.  
3. After sharpening teeth, check each tooth radius for evidence of a  
square (sharp) corner. Use the round (rat tail) file to renew the  
radius.  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
33  
TROUBLESHOOTING  
Problem  
Engine -- starts hard  
Engine -- does not start  
Cause  
Remedy  
Engine  
Cranks  
Fuel at  
carburetor  
No fuel at  
carburetor  
Fuel strainer clogged  
Fuel line clogged  
Carburetor  
Clean  
Clean  
See your ECHO dealer  
Fuel at  
cylinder  
No fuel at  
cylinder  
Carburetor  
See your ECHO dealer  
Muffler wet  
with fuel  
Fuel Mixture is too rich  
Open choke  
Clean/replace air filter  
Adjust carburetor  
See your ECHO dealer  
Spark at end  
of plug wire  
No spark  
at end of  
plug wire  
Stop switch off  
Electrical problem  
Interlock switch  
Turn switch on  
See your ECHO dealer  
See your ECHO dealer  
Spark at plug  
No spark  
at plug  
Spark gap incorrect  
Covered with carbon  
Fouled with fuel  
Adjust 0.65mm (0.026in.)  
Clean or replace  
Clean or replace  
Replace plug  
Spark plug defective  
Engine  
does not  
crank  
Internal engine problem  
See your ECHO dealer  
Engine  
runs  
Dies or accelerates poorly  
Air filter dirty  
Clean or replace  
Replace  
Replace  
Clean and adjust/replace  
Adjust  
Fuel filter dirty  
Fuel vent plugged  
Spark plug  
Carburetor  
Cooling system plugged  
Spark arrestor screen  
plugged  
Clean  
Clean  
WARNING  
DANGER  
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding  
spark plug against cylinder, otherwise serious personal injury may result.  
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34  
STORAGE  
Long Term Storage (over 30 days)  
Do not store your unit for a prolonged period of time (30 days or longer) without performing protective storage  
maintenance which includes the following:  
1. Store unit in a dry, dust free place, out of the reach of children.  
WARNING  
DANGER  
Do not store in enclosure where fuel fumes may accumulate or reach an open flame or spark.  
2. Place the stop switch (A) in the "OFF" position.  
3. Remove accumulation of grease, oil, dirt and debris from exterior of  
unit.  
A
4. Perform all periodic lubrication and services that are required.  
5. Tighten all the screws and nuts.  
6. Drain the fuel tank completely and pull the recoil starter handle  
several times to remove fuel from the carburetor.  
7. Remove the spark plug and pour 7 cc (1/4 oz.; 1/2 tablespoon) of  
fresh, clean, two-stroke engine oil into the cylinder through the  
spark plug hole.  
A. Place a clean cloth over the spark plug hole.  
B. Pull the recoil starter handle 2-3 times to distribute the oil inside  
the engine.  
C. Observe the piston location through the spark plug hole. Pull  
the recoil starter handle slowly until the piston reaches the top  
of its travel and leave it there.  
8. Install the spark plug (do not connect ignition cable).  
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GRASS TRIMMER/BRUSH CUTTER  
OPERATOR'S MANUAL  
35  
NOTES  
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SERVICING INFORMATION  
PARTS  
GenuineECHOPartsandECHOREPOWERPartsandAssembliesfor  
your ECHO products are available only from an Authorized ECHO  
Dealer. When you do need to buy parts always have the Model  
Number and Serial Number of the unit with you. You can find these  
numbers on the engine housing. For future reference, write them in the  
space provided below.  
Model No. _____________Type No._________ S/N. ____________  
SERVICE  
DEALER?  
Call  
Service of this product during the warranty period must be performed  
by an Authorized ECHO Service Dealer. For the name and address of  
the Authorized ECHO Service Dealer nearest you, ask your retailer or  
call:1-800-432-ECHO(3246). WhenpresentingyourunitforWarranty  
service/repairs, proof of purchase is required.  
1-800-432-ECHO  
ECHO CONSUMER PRODUCT SUPPORT  
CONSUMER PRODUCT  
SUPPORT  
If you require assistance or have questions concerning the application,  
operation or maintenance of this product you may call the ECHO  
ConsumerProductSupportDepartmentat1-800-673-1558from8:00am  
to 5:00 pm (Central Standard Time) Monday through Friday. Before  
calling, please know the model and serial number of your unit to help  
your Consumer Product Support Representative.  
1-800-673-1558  
8 - 5 Mon - Fri C.S.T.  
WARRANTY CARD  
This card is our means of registering all original owners of ECHO  
equipment. The card plus proof of purchase provides you the assur-  
ance that authorized warranty work will be done. It also provides a  
direct link between you and ECHO if we find it necessary to contact  
you.  
ADDITIONAL OR REPLACEMENT MANUALS  
Safety Manuals areavailable, freeofcharge, fromyourECHOdealeror  
by contacting Echo Incorporated, 400 Oakwood Road, Lake Zurich, IL  
60047.  
Operator'sandPartsManualsareavailableforpurchasefromyour  
ECHOdealerordirectlyfromECHO.[Seeorderinginstructionsbelow.]  
ECHOIncorporated  
400 Oakwood Road  
LakeZurich, IL 60047  
MANUAL ORDERING INSTRUCTIONS  
To obtain a Parts Catalog or Operator's Manual send a check or money  
order for $2.00 per Parts Catalog or $1.50 per Operator's Manual made  
payable to ECHO, INCORPORATED. State on a sheet of paper the  
model number and serial number of the ECHO unit you have, part  
number of the manual (if known), your name and address and mail to  
address above.  
TechnicalPublicationsOrders  
Available Parts Lists  
SRM-2100SB TYPE 1E S/N 001001 & UP  
SRM-2400SB TYPE 1E S/N 563000 & UP  
PART NUMBER 99922202870  
PART NUMBER 99922202871  
ECHO, INCORPORATED  
400OAKWOOD ROAD  
LAKEZURICH,IL 60047  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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