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. X7732273803 © 03/2019 ECHO Inc.
TABLE OF CONTENTS SRM-225 TABLE OF CONTENTS Introduction ................................................................................................. 3 Servicing Information .................................................................................. 4 Parts/Serial Number............................................................................. 4 Service ................................................................................................. 4 ECHO Consumer Product Support .........
SRM-225 INTRODUCTION Specifications ........................................................................................... 46 Product Registration ................................................................................. 48 Notes ........................................................................................................
SERVICING INFORMATION SRM-225 SERVICING INFORMATION Parts/Serial Number Genuine ECHO Parts and Assemblies for your ECHO products are available only from an Authorized ECHO Dealer. When you do need to buy parts always have the Model Number and Serial Number of the unit with you. For future reference write them in the space provided below. Model No. _______________ Serial No. _______________ Service Service of this product during the warranty period must be performed by an Authorized ECHO Service Dealer.
SRM-225 SAFETY Safety Videos are available from your Authorized ECHO Service Dealer. A $5.00 shipping charge is required for each video. 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.
SAFETY SRM-225 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.
SRM-225 SAFETY Symbol 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.) Thrown Objects Direction of Blade Personal Condition and Safety Equipment Cancer and Reproductive Harm www.P65Warnings.ca.gov X7732273803 © 03/2019 ECHO Inc.
SAFETY SRM-225 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.
SRM-225 SAFETY Breathing Protection Operators who are sensitive to dust or other common airborne allergens may need to wear a dust mask to prevent inhaling these materials while operating unit. Dust masks can provide protection against dust, plant debris, and other plant matter such as pollen. Make sure the mask does not impair your vision, and replace the mask as needed to prevent air restrictions.
SAFETY SRM-225 Extended Operation / Extreme Conditions Prolonged exposure to cold and/or vibration may result in injury. Read and follow 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.
SRM-225 SAFETY 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 position. Also, when grasping, use your whole hand, not just the thumb and index finger. • Take periodic breaks to minimize repetition and rest your hands. • Reduce the speed and force with which you do the repetitive movement. • Do exercises to strengthen the hand and arm muscles.
SAFETY SRM-225 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 approved attachments. Serious injury may result from the use of a non-approved attachment combination. ECHO INC.
SRM-225 ◆ ◆ ◆ ◆ ◆ SAFETY 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. Moving parts may not be visible through openings. Position wiring safely to prevent snagging, separation of connectors, or breakage during operation. Gather excess wire, and secure with wiring clamp if provided on equipment, or tuck behind the air filter area. Do not place wiring directly against hot engine components.
EMISSION CONTROL SRM-225 EMISSION CONTROL (EXHAUST & EVAPORATIVE) CARB And EPA Emissions Control Information 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 “B”, “C”, “K”, or “T”, the emission control system is EM and TWC (3way catalyst). The fuel tank/fuel line emission control system is EVAP (evaporative emissions).
SRM-225 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. Safety label is for example only. Your label may appear slightly different. 4 3 2 10 7 9 5 8 6 19 18 17 11 12 1 13 14 16 15 X7732273803 © 03/2019 ECHO Inc.
CONTENTS 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 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.
SRM-225 ASSEMBLY 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.
OPERATION SRM-225 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.
SRM-225 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-225 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.
SRM-225 OPERATION 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.
OPERATION ◆ ◆ SRM-225 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.
SRM-225 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 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.
OPERATION SRM-225 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.
SRM-225 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. OPERATION D Choke After engine fires, or 2 to 3 engine engagements, move choke lever (B) to the Run position ( ).
OPERATION 1. SRM-225 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.
SRM-225 OPERATION 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.
OPERATION SRM-225 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.
SRM-225 OPERATION 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.
MAINTENANCE SRM-225 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.
SRM-225 MAINTENANCE 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
MAINTENANCE SRM-225 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.
SRM-225 MAINTENANCE 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.
MAINTENANCE SRM-225 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). 34 0.65 mm (0.026 in.
SRM-225 MAINTENANCE 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 engine. Overheating and engine seizure can occur when: • Air intakes are blocked, preventing cooling air from reaching the cylinder. • Dust and grass build up on the outside of the cylinder. This build up insulates the engine and prevents the heat from leaving.
MAINTENANCE 4. Use a 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. SRM-225 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.
SRM-225 3. 4. MAINTENANCE Remove spark arrestor screen cover (C), gaskets (D), (E), and screen (F), from muffler body. F Clean carbon deposits from muffler components. E Note: When cleaning carbon deposit, be careful not to damage the catalytic element inside muffler. 5. Replace screen if it is cracked, plugged, or has holes burned through. 6. Assemble components in reverse order. D C Exhaust Port Cleaning Level 2. Parts Required: As needed: Heat Shield 1.
MAINTENANCE SRM-225 Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port. Do not allow carbon particles to enter the cylinder. 4. Inspect heat shield, and replace if damaged. 5. Install heat shield and muffler. 6. Tighten muffler mounting bolts (or nuts) to 90 - 110 kgf•cm (80 - 95 in•lbf). 7. Install engine cover and attach spark plug lead. 8. Start engine, and warm to operating temperature. 9.
SRM-225 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; counterclockwise to decrease idle speed. MAINTENANCE A A 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.
MAINTENANCE SRM-225 Drive Shaft (flex cable only) 1. Loosen screw (B) and remove locating screw (C). Pull gear case and shield from drive shaft housing. C B 2. 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.
SRM-225 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 clockwise to wind line onto spool until about 13 cm (5 in.) of each line remains exposed. MAINTENANCE 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.
MAINTENANCE SRM-225 Sharpening Metal Blades Several styles of metal blades are approved for use on the Brush Cutter. The 8-tooth blade can be sharpened during normal maintenance. The clearing blade and 80-tooth blade require professional service. Before sharpening, CLOSELY inspect blade for cracks (look at the bottom of each tooth and the center mounting hole closely), missing teeth and bending. If ANY of these problems are discovered, replace the blade.
SRM-225 3. TROUBLESHOOTING After sharpening teeth, check each tooth radius for evidence of a square (sharp) corner. Use the round (rat tail) file to renew the radius.
TROUBLESHOOTING SRM-225 ENGINE PROBLEM TROUBLESHOOTING CHART Problem Engine runs, but dies Check Status Engine does not crank Remedy Air filter Normal wear Clean or replace Fuel filter Fuel filter dirty Contaminants or residue in fuel Replace filter or replace fuel Fuel vent Fuel vent plugged Contaminated fuel Clean or replace Spark plug Plug dirty or worn Normal wear Clean and adjust or replace Carburetor Improper adjustment Vibration Adjust Cooling system Cooling system dirty or
SRM-225 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-225 SPECIFICATIONS MODEL SRM-225 Length without cutter head 1797 mm (70.7 in.) Width 256 mm (10.1 in.) Height 329 mm (13.0 in.) Weight (dry) without cutter head 4.9 kg (10.8 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.
SRM-225 MODEL SPECIFICATIONS 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 X7732273803 © 03/2019 ECHO Inc.
PRODUCT REGISTRATION SRM-225 PRODUCT REGISTRATION Thank you for choosing ECHO Power Equipment Please go to http://www.echo-usa.com/Warranty/Register-Your-ECHO to register your new product 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.
SRM-225 PRODUCT REGISTRATION X7732273803 49 © 03/2019 ECHO Inc.
NOTES SRM-225 NOTES 50 X7732273803 © 03/2019 ECHO Inc.
SRM-225 NOTES X7732273803 51 © 03/2019 ECHO Inc.
T98214001001 - T98214999999 T98314001001 - T98314999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
