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 ................................................................................................................ 4 The Safety Manual............
SRM-225U TABLE OF CONTENTS Storage ............................................................................................................................................ Long Term Storage (Over 30 Days)........................................................................................... Specifications................................................................................................................................... Warranty Statements ............................................
INTRODUCTION SRM-225U 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.
SRM-225U 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. Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be required for each video.
SAFETY SRM-225U 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
SRM-225U SAFETY Hand Protection Wear no-slip, heavy duty work gloves to improve your grip on the handles. Gloves also reduce the transmission of machine vibration to your hands. Breathing Protection Wear a facemask to protect against dust. 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.
SAFETY SRM-225U • 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 unit 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.
SRM-225U SAFETY Keep a Solid Stance • 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. Avoid Hot Surfaces • Keep exhaust area clear of flammable debris. Avoid contact during and immediately after operation. Equipment Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment combination. ECHO, INC.
EMISSION CONTROL (EXHAUST & EVAPORATIVE) SRM-225U EMISSION CONTROL (EXHAUST & EVAPORATIVE) EPA 2010 and Later and/or C.A.R.B. TIER III The emission control system for the engine is EM (engine modification) and, if the second to last character of the Engine Family on the Emission Control Information label (sample below) is “C”, “K”, or “T”, the emission control system is EM and TWC (3-way catalyst). The fuel tank/fuel line emission control system is EVAP (evaporative emissions).
SRM-225U DESCRIPTION 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 8 1 9 11 10 Metal Shield Label Shaft Label X7722271407 © 4/2013 ECHO Inc.
DESCRIPTION SRM-225U 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.
SRM-225U CONTENTS 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.
ASSEMBLY SRM-225U 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.
SRM-225U ASSEMBLY 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.
ASSEMBLY SRM-225U 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.
SRM-225U ASSEMBLY 4. Insert Cotter Pin (C) in hole in PTO shaft, and bend pin legs around shaft counterclockwise to retain 10 mm nut. Never reuse a cotter pin - install a new cotter pin each time a blade is installed or replaced. 5. Remove locking tool (G). G A 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.
ASSEMBLY SRM-225U 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.
SRM-225U OPERATION 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.
OPERATION SRM-225U 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.
SRM-225U OPERATION 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.
OPERATION SRM-225U • 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.
SRM-225U OPERATION 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.
OPERATION SRM-225U 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.
SRM-225U MAINTENANCE 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.
MAINTENANCE SRM-225U 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. Remove air filter and lightly brush debris from filter. Replace filter if it is damaged, fuel soaked, very dirty, or the rubber sealing edges are deformed. 4.
SRM-225U MAINTENANCE 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).
MAINTENANCE SRM-225U 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.
SRM-225U MAINTENANCE Exhaust Port Cleaning Level 2. Parts Required: B A 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.
MAINTENANCE SRM-225U 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.
SRM-225U MAINTENANCE 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. © 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. B C 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.
MAINTENANCE SRM-225U 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.
SRM-225U MAINTENANCE 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. X7722271407 © 4/2013 ECHO Inc.
TROUBLESHOOTING SRM-225U TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Engine does not crank 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 deale
SRM-225U STORAGE 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.
SPECIFICATIONS SRM-225U 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.
SRM-225U WARRANTY STATEMENTS 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.
WARRANTY STATEMENTS SRM-225U PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES & GJ* * & ^J* 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.
SRM-225U NOTES NOTES X7722271407 © 4/2013 ECHO Inc.
ECHO, INCORPORATED 40 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
