Operator’s Manual SRM-225 Grass Trimmer / Brushcutter The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Read and understand all provided literature before use. Failure to do so could result in serious injury.
TABLE OF CONTENTS SRM-225 TABLE OF CONTENTS IIntroduction ................................................................................................ 3 Servicing Information .................................................................................. 3 Parts/Serial Number............................................................................. 3 Service ................................................................................................. 4 ECHO Consumer Product Support .........
SRM-225 TABLE OF CONTENTS Storage ..................................................................................................... Long Term Storage (Over 30 Days) .................................................. Specifications ........................................................................................... Product Registration ................................................................................. 45 45 46 48 Notes ............................................................
INTRODUCTION SRM-225 INTRODUCTION 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. Read and understand all provided literature. Literature contains specifications and information for safety, operation, maintenance, storage and assembly specific to this product.
SRM-225 SERVICING INFORMATION 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 www.echo-usa.com. When presenting your unit for Warranty service/ repairs, proof of purchase is required.
SAFETY SRM-225 SAFETY Manual Safety Symbols and Important Information Throughout this manual and on the product itself, you will find safety alerts and helpful, informational messages preceded by symbols or key words. The following is an explanation 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 or death if not avoided.
SRM-225 SAFETY International Symbols Symbol Description Warning, See Operator’s Manual Wear Eye, Ear and Head Protection Wear Hand and Foot Protection Symbol Description H T L Carburetor Adjustment - High Speed Mixture Carburetor Adjustment - Idle Speed Carburetor Adjustment - Low Speed Mixture Safety/Alert Emergency Stop Hot Surface Fuel and Oil Mixture AVOID KICKOUT Keep Bystanders At Least 15 m (50 ft.
SAFETY Symbol SRM-225 Description Symbol Description Choke Control “RUN” Position (Choke Open) Choke Control “COLD START” Position (Choke Closed) Keep Feet Away From Blade Rotating Cutting Attachment Keep Bystanders and Helpers Away 15 m (50 ft.
SRM-225 SAFETY Personal Condition and Safety Equipment Cancer and Reproductive Harm www.P65Warnings.ca.gov 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. 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.
SAFETY SRM-225 Hand Protection Wear sturdy, no-slip, rubber work gloves to improve 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 personal protection whenever unit is used.
SRM-225 SAFETY The 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 this machine by anyone who has a pacemaker.
SAFETY SRM-225 Repetitive Stress Injuries (RSI) 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). An extreme RSI condition is Carpal Tunnel Syndrome (CTS), which could occur when your wrist swells and squeezes a vital nerve that runs through the area.
SRM-225 SAFETY Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains poisonous emissions and can cause serious injury or death. Read Manuals • Provide all users of this equipment with literature for instructions on safe operation. Clear The Work Area • Always clear the work area of foreign objects, and check for any hidden hazards. spectators and fellow workers must be warned, and children and animals prevented from coming nearer than 50 ft.
SAFETY ◆ ◆ ◆ ◆ SRM-225 Inspect shield for damage and ensure that shield is properly installed, and 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. Assure that throttle trigger, throttle trigger lockout, and stop switch all work properly. Check that handle and harness (if included) are adjusted for safe, comfortable operation. See Assembly Section for proper adjustment.
SRM-225 EMISSION CONTROL Periodically Check fuel system (fuel lines, vent, grommet, fuel tank, and fuel cap) for leaks especially if the unit is dropped. If damage or leaks are found, do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an authorized servicing dealer before using.
DESCRIPTION SRM-225 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. Safety label is for example only. Your label may appear slightly different.
SRM-225 1. Power Head 2. Throttle Handle - For Right Hand 3. Throttle Trigger Lockout 4. Stop Switch 5. Support Handle - For Left Hand 6. Drive Shaft Assembly 7. Nylon Cutter Head 8. Cut-Off Knife 9. Debris Shield with Cut-Off Knife CONTENTS 10. Throttle Trigger 11. Spark Plug 12. Top Guard 13. Recoil Starter Handle 14. Spark Arrestor Muffler or Spark Arrestor Muffler with Catalyst 15. Fuel Tank 16. Fuel Tank Cap 17. Choke 18. Air Cleaner 19.
ASSEMBLY SRM-225 ASSEMBLY Support Handle Installation Note: Label shows minimum spacing for support handle location. 1. If necessary, position support handle for comfortable operation and securely tighten screws. OPERATION Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from all openings.
SRM-225 OPERATION Operation With Blades Metal blades are very sharp and can cause severe injuries, even if engine is off and blades are not moving. Avoid contact with blades. Wear gloves to protect hands. Blade use demands specific brush cutter configuration. Operation without specified shield, barrier bar or U-handle, and harness can result in serious personal injury. Follow installation instructions.
OPERATION SRM-225 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-225 OPERATION A trimmer-brushcutter with a metal blade can cause serious injuries if handled improperly. Always use extreme care when carrying or handling the equipment to avoid contact with the cutting edges of the blade. Use the optional blade cover when unit is not in use. Keep blades in protective packaging until ready to install. Store blades safely after removal to prevent injury from accidental contact. Use blade protectors to protect blade teeth during unit transportation.
OPERATION SRM-225 Fuel Diesel fuels and 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 diesel or 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-225 ◆ ◆ OPERATION AVOID repeated or prolonged skin contact. AVOID inhaling oil mists or vapors. ECHO branded 2-stroke oils may be mixed at 50:1 ratio for application in all ECHO engines sold in the past regardless of ratio specified in those manuals. Handling Fuel Fuel is VERY flammable. Use extreme care when mixing, storing or handling, or serious personal injury may result. ◆ Use an approved fuel container. Mark fuel containers as containing 2-stroke mixture fuel. ◆ DO NOT smoke near fuel.
OPERATION 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-225 Fuel to Oil Mix – 50:1 Ratio US Metric Gas Oil Gas Oil gal. fl.oz. L cc 1 2.6 5 100 2 5.2 10 200 5 13 25 500 Spilled fuel is a leading cause of hydrocarbon emissions.
SRM-225 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. 1. Stop Switch Move stop switch (A) away from the STOP position. A 2. Choke Move choke lever (B) to COLD START position ( ). 3.
OPERATION 4. Recoil Starter Lay the unit on a flat area and keep movable attachment parts clear of all obstacles. Firmly grasp throttle handle with left hand and fully depress throttle trigger to wide open position. Gently pull recoil starter handle/ rope (D) until engine fires or 2 to 3 engine engagements. 5. SRM-225 D Choke After engine fires, or 2 to 3 engine engagements, move choke lever (B) to the Run position ( ).
SRM-225 1. OPERATION Stop Switch Move stop switch (A) away from the STOP position. A 2. Purge Bulb Pump purge bulb (C) until fuel is visible and flows freely in the clear fuel tank return line. Pump bulb an additional 4 or 5 times. C Note: Energy is stored in the starter spring each time the handle/rope is pulled. Generally two to six pulls, using light pulling force, will store enough energy to engage the starter and spin the engine. Do not pull the rope out to end stop. 3.
OPERATION SRM-225 Stopping Engine If engine does not stop when stop switch is moved to STOP position, close choke - COLD START position - to stall engine. Have your dealer repair stop switch before using unit again. 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. A Applications Nylon line heads may be used for trimming, scything, edging, and scalping of grass and light weeds.
SRM-225 OPERATION Operating Techniques • Debris flows in direction of line head rotation. Change line head position to assure debris flow is directed away from operator. • Keep cutting line away from wire fences to avoid entanglement. • Operate trimmer only with cutting head below knee height. Reaction Forces Push or Pull - Kickback or Kickout During normal use, operating a brushcutter with a circular metal blade can produce sudden strong reaction forces that are difficult to control.
OPERATION SRM-225 Kickout Kickout is also a reactive force caused by resistance to cutting, but the direction of blade thrust is lateral (to the left or right of the blade), instead of forward or back toward the operator.
SRM-225 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.
MAINTENANCE SRM-225 Maintenance Intervals COMPONENT/SYSTEM MAINTENANCE PROCEDURE SKILL LEVEL Daily or Before Use Air Filter Choke Shutter Inspect/Clean * Fuel System Inspect 3 Cooling System Inspect/Clean Recoil Starter Rope Inspect/Clean * Screws/Nuts/Bolts Inspect/Tighten/Replace * 1 2 1 Every Refuel Fuel System Inspect 3 1 3 Months Air Filter Fuel Filter Fuel Cap Gasket Spark Plug Muffler Spark Arrestor Replace * Inspect * 1 Inspect/Clean/Replace * Cylinder Exhaust Port Inspect/Cl
SRM-225 MAINTENANCE Air Filter Level 1. Parts Required: Tune-Up 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-225 Fuel Filter Level 1. Parts Required: TUNE UP KIT. Fuel is VERY flammable. Use extreme 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. Do not damage fuel line while removing fuel filter from tank or line. 2. Pull the fuel filter from the tank. 3. Do not remove the wire coil clamp to remove the fuel filter.
SRM-225 MAINTENANCE Spark Plug Level 2. Parts Required: Tune-Up Kit Use only NGK BPM8Y spark plug (BPMR8Y in Canada) otherwise severe engine damage may occur. 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). 0.65 mm (0.026 in.
MAINTENANCE SRM-225 Removal of cooling passage blockages or cleaning of cooling fins is considered “Normal Maintenance.” Any failure attributed to lack of maintenance is not warranted. 1. Remove spark plug lead. 2. Close choke (COLD START [ ] position). This prevents dirt from entering the carburetor throat when the air filter is removed. Remove air cleaner cover (A). 3. B A Remove engine cover (B). DO NOT use a metal scraper to remove dirt from the cylinder fins. 4.
SRM-225 MAINTENANCE 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: Spark Arrestor Screen, Gasket 1. Remove spark plug lead and engine cover. 2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from entering cylinder. 3. Remove spark arrestor screen cover (C), gaskets (D), (E), and screen (F), from muffler body. 4.
MAINTENANCE SRM-225 Exhaust Port Cleaning 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). B 3. Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port (C). A C C 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-225 MAINTENANCE 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 has been factory adjusted to maintain satisfactory starting and durability performance up to 330 m (1100 ft.) above sea level (ASL) (96.
MAINTENANCE SRM-225 When carburetor adjustment is completed, the cutting attachment should not move at idle, otherwise serious personal injury may result. Lubrication Level 1. Parts Required: Lithium Based Grease. Gear Case Gear cases without grease plug (A) do not require lubrication. 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. A Drive Shaft (flex cable only) 1.
SRM-225 2. MAINTENANCE Pull flexible cable (D) from the drive shaft housing, wipe clean and re-coat with 15 ml (0.5 oz.) of grease. 3. Slide the flexible cable (D) back in the drive housing. DO NOT get dirt on the flex cable. 4. Install the gear housing and shield assembly. D Nylon Line Replacement 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. 2.0 mm (0.080 in.) diameter 6 m (20 ft.).
MAINTENANCE 4. SRM-225 Hold trimmer head while turning knob clockwise to wind line onto spool until about 13 cm (5 in.) of each line remains exposed. Trimmer head is now fully loaded and ready for operation. 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. Sharpening Metal Blades Several styles of metal blades are approved for use on the Brush Cutter.
SRM-225 MAINTENANCE 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. 1. File each tooth at a 30° angle a specific number of times, e.g., four 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.
TROUBLESHOOTING SRM-225 TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Fuel at carburetor Status Cause Remedy No fuel at carburetor Fuel strainer or fuel line obstructed Clean or replace No fuel at cylinder Carburetor See your dealer See your dealer OPEN choke Engine starts hard Fuel at cylinder Muffler wet with fuel Fuel mixture too rich Clean or replace air filter or Adjust carburetor Engine does not start See your dealer Spark at end of plug wire No spark Spark a
SRM-225 TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Engine does not crank Check Status N/A Cause Internal engine problem Remedy See your dealer Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may result.
STORAGE SRM-225 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-225 SPECIFICATIONS SPECIFICATIONS MODEL SRM-225 Length without cutter head 1795 mm (70.7 in.) Width 256 mm (10.1 in.) Height 329 mm (13.0 in.) Weight (dry) without cutter head 5.1 kg (11.2 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 cm³ (1.29 in.
PRODUCT REGISTRATION MODEL SRM-225 SRM-225 Rotating Direction Counterclockwise; viewed from top Cutter Head Semi-automatic nylon line head (Speed Feed® 400) Handle Front (D-loop type with plastic grip) Rear (plastic grip with throttle trigger and switch) Idle Speed 3000 RPM Clutch Engagement Speed 4300 RPM Wide Open Throttle Speed (W.O.T.) 10,000 RPM PRODUCT REGISTRATION Thank you for choosing ECHO Power Equipment Please go to http://www.echo-usa.
SRM-225 PRODUCT REGISTRATION X7732273804 49 © 11/19 ECHO Incorporated
NOTES SRM-225 NOTES 50 X7732273804 © 11/19 ECHO Incorporated
SRM-225 NOTES X7732273804 51 © 11/19 ECHO Incorporated
T98214001001 - T98214999999 T98314001001 - T98314999999 U36614001001 - U36614999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
