Operator’s Manual SRM-2320T 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. This product complies with CAN ICES-2/NMB-2. X7732278300 © 08/2019 ECHO Inc.
TABLE OF CONTENTS SRM-2320T TABLE OF CONTENTS Table of Contents........................................................................................ 2 Introduction ................................................................................................. 4 Servicing Information .................................................................................. 5 Parts/Serial Number............................................................................. 5 Service .............................
SRM-2320T TABLE OF CONTENTS Storage ..................................................................................................... Long Term Storage (Over 30 Days) .................................................. Specifications ........................................................................................... Product Registration ................................................................................. Notes ........................................................................
INTRODUCTION SRM-2320T 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-2320T SERVICING INFORMATION 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.
SAFETY SRM-2320T Additional Literature In addition to finding information online, information is available from your Authorized ECHO Service Dealer, or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047 (1-800-432-ECHO (3246)). 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.
SRM-2320T 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-2320T 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 8 X7732278300 © 08/2019 ECHO Inc.
SRM-2320T SAFETY 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-2320T 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.
SRM-2320T SAFETY 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.
SAFETY SRM-2320T 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.
SRM-2320T SAFETY 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. (15 m) while the unit is in use. Keep A Firm Grip • Always hold throttle handle and support handle with thumbs and fingers tightly encircling the handles. Keep A Solid Stance • Maintain footing and balance at all times. Do not stand on slippery, uneven or unstable surfaces.
SAFETY SRM-2320T 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 assembling unit, removing obstructions, clearing debris, or servicing unit. ◆ Do not connect spark plug lead to spark plug unitl unit is ready for use. ◆ DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit.
SRM-2320T EMISSION CONTROL 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).
DESCRIPTION SRM-2320T 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 my appear slightly different. 11 18 12 13 14 15 17 19 16 6 7 5 9 4 3 2 1 10 8 1. Power Head 2. Throttle Handle - For Right Hand 3. Throttle Trigger Lockout 4. Stop Switch 5.
SRM-2320T 8. Cut-off Knife 9. Debris Shield With Cut-off Knife 10. Throttle Trigger 11. Spark Plug 12. Arm Rest CONTENTS 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. Purge Bulb CONTENTS The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, some assembly may be necessary. After opening the carton, check for damage.
ASSEMBLY SRM-2320T 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. MINIMUM SPACING OPERATION Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objects away from all openings.
SRM-2320T 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-2320T 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-2320T 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-2320T 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-2320T ◆ ◆ 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-2320T 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-2320T 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 button (A) forward, away from the STOP position. A 2. Choke Move choke lever (B) to COLD START ( ) position. 3.
OPERATION SRM-2320T After engine fires (or 5 pulls), move choke to the RUN ( ) (open) position. Firmly grasp throttle handle and throttle trigger lockout with left hand and fully depress throttle trigger to wide open position. Pull starter handle/rope (D) until engine starts and runs. Release throttle trigger and allow unit to warm up at idle for several minutes. Note: If engine does not start with choke in “RUN” position after 5 pulls, repeat instructions 2 - 5. 6.
SRM-2320T 2. OPERATION Purge Bulb Pump purge bulb (B) until fuel is visible in the “Clear” fuel return line. Pump bulb an additional 4 or 5 times. C B 3. Recoil Starter Lay the unit on a flat area and keep movable attachment parts clear of all obstacles. Firmly grip throttle handle and throttle trigger lockout with left hand. Rapidly pull recoil starter handle/rope (D) until engine fires. D Note: If engine does not start after 5 pulls, use Cold Start Procedure. Stopping Engine 1.
OPERATION SRM-2320T Applications Nylon line heads may be used for trimming, scything, edging, and scalping of grass and light weeds. Trimming Feed the spinning line into the material to be cut. Tilt the line head to one side to direct cutting debris away from you: • Model SRM/PAS/SB/TX/C (Straight shaft, counter-clockwise line head rotation) - Tilt the cutting head down on the right side (muffler side) while cutting to direct cutting debris away from operator.
SRM-2320T OPERATION Push and Pull Forces Push and pull forces are reactive forces that push the equipment directly toward the operator, or that pull the equipment directly away from the operator. These forces are the result of cutting on the sides of the blade. The direction of the force depends on the side of the blade being used, and the direction of blade rotation at the point of contact.
OPERATION SRM-2320T To free a blade that is bound in the cut, stop the engine, and support the trimmer or brushcutter to keep stress off the blade. Push the tree away from the entry point of the cut to open the cut, and pull the blade directly away from the cut in a straight-line motion. Use caution when releasing the tree to avoid being struck by spring-back or falling. Inspect the blade for damage before proceeding.
SRM-2320T 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-2320T Maintenance Intervals COMPONENT/SYSTEM MAINTENANCE PROCEDURE SKILL LEVEL Daily or Before Use Air Filter Choke Shutter Inspect/Clean * 1 Fuel System Inspect 3 Cooling System Inspect/Clean Recoil Starter Rope Inspect/Clean * Screws/Nuts/Bolts Inspect/Tighten/Replace * 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
SRM-2320T 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 1. SRM-2320T 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. Pinch the fuel filter with the fingers on one hand and the fuel line with the other hand. Pull and twist slightly to separate. 4. Install the new filter with the reverse action.
SRM-2320T MAINTENANCE 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.) Cooling System Level 2. To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area.
MAINTENANCE 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. SRM-2320T B A Remove engine cover (B). DO NOT use a metal scraper to remove dirt from the cylinder fins. 4. Use a brush to remove dirt from the cylinder fins. 5. Remove ignition wires from clip for cleaning. 36 X7732278300 © 08/2019 ECHO Inc.
SRM-2320T 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 2. SRM-2320T 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. Do not allow carbon particles to enter the cylinder. 4. Inspect heat shield, and replace if damaged. 5. Install heat shield and muffler. 6.
SRM-2320T MAINTENANCE 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) (96.0 kPa). To maintain proper engine operation and emission compliance above 330 m (1100 ft.) ASL the carburetor may need to be adjusted by an authorized ECHO service dealer. If the engine is adjusted for operation above 330 m (1100 ft.
MAINTENANCE SRM-2320T 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. C Loosen screw (B) and remove locating screw (C). Pull gear case and shield from drive shaft housing. 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.
SRM-2320T 1. Cut one piece of line to recommended length. 2.0 mm (0.080 in.) diameter 6 m (20 ft.). 2.4 mm (0.095 in.) diameter 6 m (20 ft.). 2. Align arrows on top of knob with openings in eyelets. 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.
MAINTENANCE SRM-2320T 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. The 8-tooth blade can be sharpened during normal maintenance. The clearing blade and 80-tooth blade require professional service.
SRM-2320T MAINTENANCE If an electric grinder is used, use care not to overheat teeth, do not allow tips/tooth to glow red or turn blue. DO NOT place blade in cooling water. This will change the temper of the blade and could result in blade failure. 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. X7732278300 © 08/2019 ECHO Inc.
TROUBLESHOOTING SRM-2320T 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
SRM-2320T TROUBLESHOOTING ENGINE PROBLEM TROUBLESHOOTING CHART Problem Check Engine does not crank 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. X7732278300 © 08/2019 ECHO Inc.
STORAGE SRM-2320T 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-2320T SPECIFICATIONS SPECIFICATIONS MODEL SRM-2320T Length w/o cutter head 1795 mm (70.6 in.) Width 250 mm (9.8 in.) Height 329mm (12.9 in.) Weight (dry) w/o cutter head 5.3 kg (11.68 lb.) Engine Type Air cooled, two-stroke, single cylinder gasoline engine Bore 32.2 mm (1.27in.) Stroke 26 mm (1.02 in.) Displacement 21.2 cc (1.29 cu. in.
PRODUCT REGISTRATION MODEL Shoulder Harness SRM-2320T SRM-2320T Optional Idle Speed 3,000 RPM Clutch Engagement Speed 4,000 RPM Wide Open Throttle Speed (W.O.T.) 10,890 RPM 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.
SRM-2320T X7732278300 © 08/2019 ECHO Inc.
NOTES SRM-2320T NOTES 50 X7732278300 © 08/2019 ECHO Inc.
SRM-2320T X7732278300 © 08/2019 ECHO Inc.
U29515001001 - U29515999999 ECHO INCORPORATED 400 Oakwood Road Lake Zurich, IL 60047 www.echo-usa.
