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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.

Operator’s Manual

X7502027204

© 10/2014 ECHO Inc.

x7722271404 / x772000164

SRM-266T

GRASS TRIMMER / 

BRUSH CUTTER

Burn Hazard

The muffler or catalytic muffler and surrounding cover may become extremely hot. 
Always keep clear of exhaust and muffler area, otherwise serious personal injury may 
occur.

The engine exhaust from this product contains chemicals known to the State of California to cause 
cancer, birth defects or other reproductive harm.

Users of this equipment risk injury to themselves and others if the unit is used 
improperly and/or safety precautions are not followed. ECHO provides an operator’s 
manual and a safety manual. Both must be read and understood for proper and safe 
operation. Failure to do so could result in serious injury.

Summary of Contents for SRM-266T

Page 1: ...r catalytic muffler and surrounding cover may become extremely hot Always keep clear of exhaust and muffler area otherwise serious personal injury may occur The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Users of this equipment risk injury to themselves and others if the unit is used improperly and o...

Page 2: ...ption 11 Contents 13 Assembly 14 Plastic Shield Installation 14 Nylon Line Head Installation 14 To Advance Trimmer Line 15 Remove Nylon Line Head 15 Support Handle Installation 15 Operation 15 Operation With Blades 16 Blade Selection 16 Fuel 17 Starting Cold Engine 19 Starting Warm Engine 20 Stopping Engine 21 Maintenance 22 Skill Levels 22 Maintenance Intervals 22 Air Filter 23 Fuel Filter 23 Coo...

Page 3: ...ture reference write them in the space provided below Model No _________________ SN ___________________ Service 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 Dealer information is also available on our Web Site When pre...

Page 4: ...ols and key words and what they mean to you The safety alert symbol accompanied by the word DANGER calls attention to an act or condition which WILL lead to serious personal injury or death if not avoided The safety alert symbol accompanied by the word WARNING calls attention to an act or condition which CAN lead to serious personal injury or death if not avoided The safety alert symbol accompanie...

Page 5: ...retor Adjustment Idle speed DO NOT smoke near fuel Primer Bulb Wear hand and foot protection Carburetor Adjustment Low speed mixture Choke Control Run Position Choke Open Choke Control Cold Start Position Choke Closed Safety Alert Emergency Stop Keep feet away from blade RotatingCutting Attachment Hot Surface Fuel and oil mixture Keep bystanders and helpers away 15 m 50 ft AVOIDKICKOUT Keep bystan...

Page 6: ...mprove your grip on the handles Gloves also provide protection against cuts and scratches cold environments and reduce the transmission of machine vibration to your hands Hearing Ear Protection ECHO recommends wearing hearing protection whenever unit is used Breathing Protection Operators who are sensitive to dust or other common airborne allergens may need to wear a dust mask to prevent inhaling ...

Page 7: ...ollow all safety and operation instructions to minimize risk of injury Failure to follow instructions may result in painful wrist hand arm injuries 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 los...

Page 8: ...ately 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 All over head electrical conductors and communications wires can have electricity flow with high voltages This unit is not insulated against electrical current Never tou...

Page 9: ...ingers or cause severe injuries Keep hands clothing and loose objects away from all openings ALWAYS stop engine disconnect spark plug and make sure all moving parts have come to a complete stop before removing obstructions clearing debris or servicing unit DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit NEVER reach into any opening while the engi...

Page 10: ...n label varies by engine FAMILY Product Emission Durability Emission Compliance Period The 50 or 300 hour emission 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 ...

Page 11: ...ur unit Make sure the decal s is legible and that you understand and follow the instructions on it If a decal cannot be read a new one can be ordered from your ECHO dealer See PARTS ORDERING instructions for specific information 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 18 Hot Label Shaft Label ...

Page 12: ...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 operation This shield must be replaced with the steel shield for blade use 10 THROTTLE TRIGGER Spring loaded to return to idle when released During acceleration press trigger gradually for best operating technique 11 SPARK PLUG Provides sp...

Page 13: ...ing parts Some Echo units may be factory pre assembled The nylon line head plastic debris shield and mounting hardware shown in the contents list are pre assembled to the unit Assembly tools are not supplied with these units The front handle may need to be re positioned for comfortable operation ____ 1 Power Head Drive Shaft Assembly ____ 1 Operator s Manual ____ 1 Safety Manual ____ 1 Emission Co...

Page 14: ...es or personal injury may result Cutoff knife is sharp Gearcase and surrounding area may be hot 1 Be sure adapter plate C remains on PTO shaft A 2 Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool D 3 Thread line head E onto shaft by turning it counter clockwise until head is tight against adapter plate C 4 Remove locking tool D Semi automatic nylon ...

Page 15: ...PERATION Moving parts can amputate fingers or cause severe injuries Keep hands clothing and loose objects away from all openings Always stop engine disconnect spark plug and make sure all moving parts have come to a complete stop before removing obstructions clearing debris or servicing unit Engine exhaust IS HOT and contains Carbon Monoxide CO a poison gas Breathing CO can cause unconsciousness s...

Page 16: ...ed when using or carrying the unit Blade Selection The type of Blade used MUST be matched to the type and size of material cut An improper or dull blade can cause serious personal injury Blades MUST be sharp Dull blades increase the chance of kick out and injury to yourself and bystanders Plastic Nylon Grass Weed Blades may be used where ever the nylon line head is used DO NOT use this blade for h...

Page 17: ...ith the operator s hands and feet by restricting trimmer movement Fuel Alternative fuels such as E 15 15 ethanol E 85 85 ethanol or any fuels not meeting ECHO requirements are NOT approved for use in ECHO 2 stroke gasoline engines Use of alternative fuels may cause performance problems loss of power overheating fuel vapor lock and unintended machine operation including but not limited to improper ...

Page 18: ...Always loosen fuel caps slowly allowing pressure to equalize NEVER refuel a unit when the engine is HOT or RUNNING DO NOT fill fuel tanks indoors ALWAYS fill fuel tanks outdoors over bare ground DO NOT overfill fuel tank Wipe up spills immediately 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 u...

Page 19: ... Stored two stroke fuel may separate ALWAYS shake fuel container thoroughly before each use Starting Cold Engine The attachment will operate immediately when the engine starts and could result in possible serious injury Keep movable parts of the attachment away from objects that could become entangled or thrown and surfaces that could cause loss of control 1 Stop Switch Move stop switch A away fro...

Page 20: ...eral minutes Note If engine does not start with choke in Run position after 5 pulls repeat instructions 2 5 6 Throttle Trigger After engine warm up grip the throttle handle and support handle Depress the throttle trigger lockout and gradually depress throttle trigger to increase engine RPM to operating speed Starting Warm Engine The starting procedure is the same as Cold Start except DO NOT close ...

Page 21: ...tarter handle rope D until engine fires Note If engine does not start after 5 pulls use Cold Start Procedure Stopping Engine 1 Throttle Release throttle and allow engine to return to idle before shutting off engine 2 Stop Switch Move stop switch A to STOP position If engine does not stop when stop switch is moved to STOP position close choke COLD START position to stall engine Have your ECHO deale...

Page 22: ...2 Moderate difficulty Some specialized tools may be required ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier Maintenance Intervals 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 l...

Page 23: ... not oil Dual Layer Air Filter Lightly brush debris from filter Soak heavily soiled filters in water detergent solution to loosen dirt then brush lightly Rinse with clean water and allow to dry completely before reuse 5 Place foam pre filter over raised center and inside outer lip of air filter Install air filter in air filter case 6 Install air filter retainer on post in air filter cover flat sid...

Page 24: ...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 Tighten spark plug to 150 170 kgf cm 130 150 in lbf Cooling System Level 2 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 engin...

Page 25: ...erse order Exhaust System Spark Arrestor Screen Level 2 1 Remove spark plug lead 2 Remove muffler cover A 3 Place piston at Top Dead Center TDC to prevent carbon dirt from entering cylinder 4 Remove spark arrestor screen D gasket C and exhaust guide B from muffler body 5 Clean carbon deposits from muffler components Note When cleaning carbon deposits be careful not to damage the catalytic element ...

Page 26: ...e and re tighten mounting bolts or nuts to specifications Carburetor Adjustment Level 2 Engine Break In New engines must be operated a minimum duration of two tanks of fuel break in before carburetor adjustments can be made During the break in period your engine performance will increase and exhaust emissions will stabilize Idle speed can be adjusted as required High Altitude Operation This engine...

Page 27: ...pleted the cutting attachment should not move at idle otherwise serious personal injury may result Lubrication Level 1 Gear Housing 1 Clean all loose debris from gear case 2 Remove plug A and check level of grease 3 Add grease if necessary DO NOT over fill Drive Shaft flex cable models 1 Loosen two 2 screws B and remove center locating screw C Pull gear case and shield from drive shaft housing 2 P...

Page 28: ...eplacement Wear Gloves or personal injury may result Cutoff knife is sharp Gearcase and surrounding area may be hot 1 Cut one piece of line to recommended length 080 2 0 mm dia 20 6 m 095 2 4 mm dia 20 6 m 2 Align arrows on top of knob with openings in eyelets 3 Insert one end of trimmer line into an eyelet and push line equal distance through trimmer head 4 Hold trimmer head while turning knob cl...

Page 29: ... 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 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 ...

Page 30: ...k at end of plug wire No spark Stop switch OFF Electrical problem Interlock switch Turn switch to ON See your Echo dealer See your Echo dealer Spark at plug No spark Spark gap incorrect Covered with carbon Fouled with fuel Plug defective Adjust to 0 65mm 0 026 in Clean or replace Clean or replace Replace plug Engine runs but dies or does not accelerate properly Air filter Air filter dirty Normal w...

Page 31: ...top switch in the OFF position 3 Remove accumulation of grease oil dirt and debris from exterior of unit 4 Perform all periodic lubrication and services that are required 5 Tighten all the screws and nuts 6 Drain fuel tank completely Press purge bulb 6 7 times to remove remaining fuel from carburetor then drain the tank again Close choke start and run the engine until it stops due to lack of fuel ...

Page 32: ...CHO Red Armor ISO L EGD ISO CD 13738 and J A S O M345 FD two stroke air cooled engine oil Gasoline Use 89 Octane unleaded Do not use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Do not use alternative fuels such as E 15 or E 85 Oil Power Blend XTM or ECHO Red Armor Premium Universal 2 Stroke Oil Fuel Tank Capacity 0 50 lit 16 9 US fl oz Starter System Automatic Rewind Start...

Page 33: ...ICATION 5 YEAR WARRANTY All units for residential or non income producing use will be covered by this limited warranty for YH HDUV from date of purchase EXCEPTIONS RU WZR VWURNH HQJLQH SRZHUHG SURGXFWV WKH HOHFWURQLF LJQLWLRQ PRGXOH ÀH LEOH GULYH FDEOHV 650 VROLG GULYH VKDIWV DQG 7 WLQHV are warranted for the OLIH of the product on parts only XWWLQJ DWWDFKPHQWV VXFK DV EXW QRW OLPLWHG WR EDUV FKDL...

Page 34: ...tachments QFRUUHFW VWRUDJH SURFHGXUHV VWDOH IXHO LQFOXGLQJ IDLOXUH WR SURYLGH RU SHUIRUP UHTXLUHG PDLQWHQDQFH VHUYLFHV DV SUHVFULEHG LQ WKH RSHUDWRU V manual Preventative maintenance as outlined in the operators manual is the customer s responsibility DLOXUHV GXH WR LPSURSHU VHW XS SUH GHOLYHU VHUYLFH RU UHSDLU VHUYLFH E DQ RQH RWKHU WKDQ DXWKRUL HG 2 VHUYLFLQJ GHDOHU GXULQJ WKH warranty period HU...

Page 35: ...roduct on line It s FAST and EASY NOTE your information will never be sold or misused by ECHO Inc Registering your purchase enables us to contact you in the unlikely event of a service update or product recall and verifies your ownership for warranty consideration If you do not have access to the Internet you can complete the form below and mail to ECHO Inc Product Registration PO Box 1139 Lake Zu...

Page 36: ...36 X7502027204 10 2014 ECHO Inc NOTES SRM 266T NOTES ...

Page 37: ...SRM 266T NOTES 10 2014 ECHO Inc X7502027204 37 ...

Page 38: ...38 X7502027204 10 2014 ECHO Inc NOTES SRM 266T ...

Page 39: ...SRM 266T NOTES 10 2014 ECHO Inc X7502027204 39 ...

Page 40: ...ECHO INCORPORATED 400 Oakwood Road Lake Zurich IL 60047 www echo usa com 40 T43413001001 T43413999999 ...

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