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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

X7722271407

© 4/2013 ECHO Inc.

x7722271404 / x772000164

SRM-225U

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-225U

Page 1: ...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...

Page 2: ...R B TIER III 10 Description 11 Contents 13 Assembly 14 Plastic Shield Installation 14 Nylon Line Head Installation 14 To Advance Trimmer Line 15 Remove Nylon Line Head 15 Blade Installation 15 U Hand...

Page 3: ...SRM 225U TABLE OF CONTENTS X7722271407 3 4 2013 ECHO Inc Storage 35 Long Term Storage Over 30 Days 35 Specifications 36 Warranty Statements 37 Notes 39...

Page 4: ...re 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...

Page 5: ...tion of those symbols 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 o...

Page 6: ...must be worn whenever you operate the unit Symbol Description Symbol Description Symbol Description Symbol Description Warning See Operator s Manual Carburetor Adjustment High speed mixture DO NOT all...

Page 7: ...an increase operator fatigue which may lead to heat stroke Schedule heavy work for early morning or late afternoon hours when temperatures are cooler The ignition components of this machine generate a...

Page 8: ...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 positio...

Page 9: ...nife 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 handle and harness if included are adj...

Page 10: ...e fuel tank fuel line emission control system is EVAP evaporative emissions Evaporative emissions for California models are only applicable to fuel tanks An Emission Control Label is located on the en...

Page 11: ...e 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...

Page 12: ...ed with the metal shield for blade use 9 U HANDLE Required for metal blade operation 10 HIP PAD Used to protect hip leg and clothing when using U handle equipped unit 11 SHOULDER HARNESS An adjustable...

Page 13: ...handle assembly ____ 1 Operator s Manual ____ 1 Safety Manual ____ 1 Warranty Registration Card ____ 1 Emission Control Warranty Statement ____ 1 Plastic Shield ____ Assembly Tool s ____ 1 Nylon Trim...

Page 14: ...lower plate E and blade nut D for future use with blade conversions 4 Align plastic debris shield H with the drive shaft and install on the bottom of the gear housing flange 5 Place shield plate I on...

Page 15: ...line head 1 Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool G 2 Remove line head J by turning it clockwise until head is completely off of shaft 3 Rem...

Page 16: ...ade nut clockwise to remove 4 Remove locking tool G 5 Loosely attach bracket K to shield L and attach shield to bottom of gear housing B with hardware provided 6 Tighten all shield hardware Install Bl...

Page 17: ...mp screws O to hold U handle in position until final adjustments are completed 4 Route throttle linkage and ignition lead assembly along shaft and clip as shown 5 Install throttle linkage cable into f...

Page 18: ...air filter and cover Balance and Adjust Unit 1 Loosen harness clamp screw 2 Put on harness and attach unit to harness 3 Slide harness clamp up A or down until unit balances with head approximately 50...

Page 19: ...cts Contact local fire authorities for laws or regulations regarding fire prevention requirements Operation With Blades Blade use DEMANDS specific Brush Cutter configuration Operation without specifie...

Page 20: ...igned for grass garden debris and thick weeds up to 19 mm 3 4 diameter DO NOT use this blade for brush or heavy woody growth 80 Tooth Brush Blade is designed for cutting brush and woody growth up to 1...

Page 21: ...l meeting ISO L EGD ISO CD 13738 and J A S O FD Standards must be used Echo brand premium Power Blend X TM Universal 2 Stroke Oil meets these standards Engine problems due to inadequate lubrication ca...

Page 22: ...ng cause of hydrocarbon emissions Some states may require the use of automatic fuel shut off containers to reduce fuel spillage After use DO NOT store a unit with fuel in its tank Leaks can occur Retu...

Page 23: ...cessive downward force or damage to unit can occur 4 Recoil Starter Lay the unit on a flat area and keep movable attachment parts clear of all obstacles Firmly grasp right hand grip and throttle trigg...

Page 24: ...r fuel return line Note Lightly place knee on drive shaft to stabilize unit during starting Do not apply excessive downward force or damage to unit can occur 3 Recoil Starter Lay the unit on a flat ar...

Page 25: ...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 i...

Page 26: ...reme care when mixing storing or handling or 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 fue...

Page 27: ...n 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...

Page 28: ...ents in reverse order Exhaust System Spark Arrestor Screen Level 2 1 Remove engine cover B 2 Place piston at Top Dead Center TDC to prevent carbon dirt from entering cylinder 3 Remove spark arrestor s...

Page 29: ...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 a...

Page 30: ...ng attachment should not move at idle otherwise serious personal injury may result Lubrication Level 1 Gear Housing 1 Clean all loose debris from gear box 2 Remove plug A and check level of grease 3 A...

Page 31: ...B from eyelet carrier C 2 Remove cover from eyelet carrier Nylon Line Replacement 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 kno...

Page 32: ...ing 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 c...

Page 33: ...SRM 225U MAINTENANCE X7722271407 33 4 2013 ECHO Inc 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...

Page 34: ...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 c...

Page 35: ...p 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 nu...

Page 36: ...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...

Page 37: ...warranty period and arrange for pick up or return of your unit after the repairs have been made For your nearest authorized ECHO servicing dealer call ECHO s Dealer Referral Center at 1 800 432 ECHO o...

Page 38: ...or California Emission Defect Warranty Explanation X G Only use gasoline which contains G Gasohol which contains a 6 7 J 9 is also approved The prescribed mixing ratio of gasoline to oil is listed on...

Page 39: ...SRM 225U NOTES X7722271407 39 4 2013 ECHO Inc NOTES...

Page 40: ...ECHO INCORPORATED 400 Oakwood Road Lake Zurich IL 60047 www echo usa com 40 S79111001030 S79111999999 S79012004906 S79012999999...

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