x7722271404 / x772000164 SRM-225U GRASS TRIMMER / BRUSH CUTTER Operator’s Manual 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.
TABLE OF CONTENTS SRM-225U TABLE OF CONTENTS Table of Contents .................................................................................................................................................................. 2 Introduction ............................................................................................................................................................................ 4 The Operator’s Manual ........................................................................
SRM-225U INTRODUCTION INTRODUCTION Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job dependability. Read and understand this manual and the SAFETY MANUAL. You will find both easy to use and full of helpful operating tips and SAFETY messages. The Operator’s Manual Keep it in a safe place for future reference. Contains specifications and information for safety, operation, maintenance, storage and assembly specific to this product.
SAFETY Additional or Replacement Manuals Replacement Operator, Safety Manuals, and Parts Catalogs are available from your ECHO dealer or at www.echo-usa.com or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047 (800-673-1558). Always check the ECHO Web Site for updated information. SRM-225U For more information scan this QR code. Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be required for each video.
SRM-225U SAFETY International Symbols Symbol Description Symbol Description Symbol Description Symbol Description Warning, See Operator’s Manual Carburetor Adjustment High speed mixture DO NOT allow flames or sparks near fuel Ignition ON / OFF Wear eye, ear and head protection Carburetor 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” Positi
SAFETY SRM-225U Personal Condition and Safety Equipment Users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are not followed. Proper clothing and safety gear must be worn when operating unit. 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.
SRM-225U SAFETY The ignition components of this machine generate an electromagnetic field during operation which may interfere with some pacemakers. To reduce the risk of serious or fatal injury, persons with pacemakers should consult with their physician and the pacemaker manufacturer before operating this machine. In the absence of such information, ECHO does not recommend the use of ECHO products by anyone who has a pacemaker.
SAFETY SRM-225U All over head electrical conductors and communications wires can have electricity flow with high voltages. This unit is not insulated against electrical current. Never touch wires directly or indirectly, otherwise serious injury or death may result. Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains poisonous emissions and can cause serious injury or death.
SRM-225U EMISSION CONTROL (EXHAUST & EVAPORATIVE) 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. DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit. NEVER reach into any opening while the engine is running.
DESCRIPTION SRM-225U DESCRIPTION Locate the safety decal(s) on your 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. 14 22 12 15 16 21 17 20 13 18 19 3 4 6 2 5 7 1 8 9 11 10 Hot Label Metal Shield Label Shaft Label 10 X7722271408 © 3/2014 ECHO Inc.
SRM-225U DESCRIPTION 1. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter. 2. THROTTLE TRIGGER LOCKOUT - This lever must be held during starting. Operation of the throttle trigger is prevented unless throttle trigger lockout lever is engaged. 3. STOP SWITCH - “SLIDE SWITCH” mounted on top of the Throttle Trigger Housing. Move switch FORWARD to RUN, BACK to STOP. 4. THROTTLE TRIGGER - Controls engine speed. Spring loaded to return to idle when released.
CONTENTS SRM-225U CONTENTS The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, shield installation and other assembly may be necessary. After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing parts. Use the contents list to check for missing parts.
SRM-225U ASSEMBLY ASSEMBLY Plastic Shield Installation B (Nylon line operation) Parts Required: Plastic Debris Shield, Shield Plate, three (3) 5 x 16 mm screws. F A The plastic shield is for use with the Nylon Line Head only. Install Metal Shield when using plastic or metal blades, or serious injury may result. E D C 1. Align hole in upper plate (A) with notch in gear housing (B), and insert locking tool (G) to prevent splined shaft from turning.
ASSEMBLY SRM-225U 3. Thread line head (J) onto PTO shaft by turning it counter-clockwise until head is tight against upper plate (A). G 4. Remove locking tool (G). Semi-automatic nylon line heads must be used only with plastic debris shield with cut-off knife. Using nylon line heads with metal debris shield can result in trimmer damage, caused by operation with excessive line length. J Note: Your nylon line head may appear different than nylon line head shown.
SRM-225U ASSEMBLY a. Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool (G). b. Remove line head (J) by turning it clockwise until head is completely off of shaft. c. Remove locking tool (G). d. Remove three screws holding shield plate and plastic shield (H) to gear housing. e. Retain line head, upper fixing plate, shield plate, and plastic shield for conversion back to nylon line head operation. 2.
ASSEMBLY SRM-225U 4. Insert Cotter Pin (C) in hole in PTO shaft, and bend pin legs around shaft counterclockwise to retain 10 mm nut. G A 20 Never reuse a cotter pin - install a new cotter pin each time a blade is installed or replaced. 5. Remove locking tool (G). E M D C U-Handle Installation Parts Required: U-Handle, Clamp w/screws, 8 mm x 55 mm hex bolt, 8 mm flat washer N O 1. Install upper U-Handle and bracket on lower bracket with one (1) 8mm x 55mm bolt (N) and (1) large circular washer.
SRM-225U ASSEMBLY 4. Connect 2 ignition stop leads (F, G) from throttle cable tubing to 2 ignition leads (F, G) on engine. F H G 5. Secure ignition leads against engine housing with clips (H, I). I 6. Install 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 50-75 mm (2-3 in.) from the ground. B 4. Tighten harness clamp screw. 5.
OPERATION SRM-225U OPERATION 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, serious injury, or death. Exhaust can cause serious burns.
SRM-225U OPERATION Note: The Barrier Bar is used to restrict rearward movement of the unit. The Barrier Bar is NOT A HANDLE and should not be gripped 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.
OPERATION SRM-225U Note: In case of Emergency, pull up on the Quick Release Collar to disconnect the trimmer from the harness. 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 clutch engagement.
SRM-225U OPERATION • Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired. • Move at least 3m (10 ft.) from refueling location before starting the engine. Mixing Instructions 1. Fill an approved fuel container with half of the required amount of gasoline. 2. Add the proper amount of 2-stroke oil to gasoline. 3. Close container and shake to mix oil with gasoline. 4. Add remaining gasoline, close fuel container, and remix.
OPERATION SRM-225U 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. A 1. Stop Switch Move stop switch button (A) forward, away from the STOP position. 2. Choke Move choke lever (B) to Cold Start Position ( ). 3.
SRM-225U OPERATION Starting Warm Engine The starting procedure is the same as Cold Start except DO NOT close the choke, and do not hold throttle trigger fully depressed. A The attachment should not move at idle, otherwise serious personal injury may result. Note: If attachment moves, readjust carburetor according to “Carburetor Adjustment” instructions in this manual or see your ECHO Dealer. 1. Stop Switch Move stop switch button (A) forward away from the STOP position. 2.
MAINTENANCE SRM-225U MAINTENANCE 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. Allow unit to cool before performing service. Wear gloves to protect hands from sharp edges and hot surfaces. Your ECHO unit is designed to provide many hours of trouble free service.
SRM-225U MAINTENANCE Air Filter Level 1. Parts Required: REPOWERTM AIR & FUEL FILTER KIT. 1. Close choke (Cold Start Position [ ]). This prevents dirt from entering the carburetor throat when the air filter is removed. Brush accumulated dirt from air cleaner area. 2. Remove air filter cover. Brush dirt from inside cover. 3. Replace filter if it is damaged, fuel soaked, very dirty, or the rubber sealing edges are deformed. • Lightly brush debris from filter.
MAINTENANCE SRM-225U Spark Plug Level 2. Parts Required: REPOWERTM Tune-Up Kit Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada) otherwise severe engine damage may occur. .65 mm (.026 in.) 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. Tighten spark plug to 150-170 kgf•cm (130-150 in•lbf).
SRM-225U MAINTENANCE 2. Remove air cleaner cover (A). 3. Remove engine cover (B). B A DO NOT use a metal scraper to remove dirt from the cylinder fins. 4. Use brush to remove dirt from the cylinder fins. 5. Remove ignition wires from clip for cleaning. 6. Remove grass and leaves from the grid between the recoil starter and fuel tank. 7. Assemble components in reverse order. Exhaust System Spark Arrestor Screen Level 2. Parts Required: F Spark Arrestor Screen, Gasket 1. Remove engine cover (B). 2.
MAINTENANCE Exhaust Port Cleaning SRM-225U B A Level 2. Parts Required: As needed: Heat Shield 1. Remove spark plug lead from spark plug, and remove engine cover. 2. Place piston at top dead center. Remove muffler (A) and heat shield (B). 3. Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port. Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port.
SRM-225U MAINTENANCE Note: Every unit is run at the factory and the carburetor is set in compliance with emission regulations. Carburetor adjustments, other than idle speed, must be performed by an authorized ECHO dealer. 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 “Specifications” page of this manual. Turn idle screw (A) clockwise to increase idle speed; counter clockwise to decrease idle speed.
MAINTENANCE SRM-225U Nylon Line Head Disassembly Instructions A Note: For normal use, Speed Feed® head disassembly is not necessary. However, if circumstances require disassembly, follow these instructions. B 1. Press top of locking tabs (A) on both sides of Speed Feed® head to release cover (B) from eyelet carrier(C). 2. Remove cover from eyelet carrier. Nylon Line Replacement C For more information scan this QR code. Wear Gloves or personal injury may result: • Cutoff knife is sharp.
SRM-225U MAINTENANCE When the wear indicators located at the bottom of the Speed-Feed® head are worn smooth, or if holes appear, replacement of the cover or the entire Speed-Feed® head is required. Wear Indicators 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.
MAINTENANCE SRM-225U 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. 32 X7722271408 © 3/2014 ECHO Inc.
SRM-225U TROUBLESHOOTING TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Remedy Fuel strainer clogged Fuel line clogged Carburetor Clean or replace Clean or replace See your Echo dealer No fuel at cylinder Carburetor See your Echo dealer Muffler wet with fuel Fuel Mixture too rich Open choke Clean/replace air filter Adjust carburetor See your Echo dealer No spark Stop switch off Electrical problem Interlock switch Turn switch to ON See your Echo dealer See your Echo dealer
STORAGE SRM-225U STORAGE During operation the muffler or catalytic muffler and surrounding cover become hot. Always keep exhaust area clear of flammable debris during transportation or when storing, otherwise serious property damage or personal injury may result. 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.
SRM-225U SPECIFICATIONS SPECIFICATIONS MODEL SRM-225U Length 1793 mm (70.6 in.) Width 700 mm (27.5 in.) Height 510 mm (20.1 in.) Weight (dry) w/Cutter Head 5.98 kg (13.2 lb.) Engine Type Air cooled, two-stroke, single cylinder gasoline engine Bore 32.2 mm (1.27 in.) Stroke 26.0 mm (1.02 in.) Displacement 21.2 cc (1.29 cu. in.
WARRANTY STATEMENTS SRM-225U WARRANTY STATEMENTS ECHO LIMITED WARRANTY STATEMENT FOR PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2010 ECHO'S RESPONSIBILITY ECHO Incorporated’s Limited Warranty, provides to the original purchaser that this ECHO product is free from defects in material and workmanship.
SRM-225U WARRANTY STATEMENTS PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES GD\ UHVLGHQWLDO RU QRQ LQFRPH SURGXFLQJ ZDUUDQW\ GD\ FRPPHUFLDO LQVWLWXWLRQDO DJULFXOWXUDO LQGXVWULDO LQFRPH SURGXFLQJ RU UHQWDO DSSOLFDWLRQ ZDUUDQW\ ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS This ECHO two-stroke engine power product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior performance.
NOTES SRM-225U NOTES 38 X7722271408 © 3/2014 ECHO Inc.
SRM-225U X7722271408 © 3/2014 ECHO Inc.
ECHO, INCORPORATED 40 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
