OPERATOR’S MANUAL TRIMMER/ BRUSHCUTTER SRM-400U WARNING DANGER READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR SAFE OPERATION. FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
INTRODUCTION The ECHO Trimmer/Brushcutter, model SRM-400U is lightweight, high performance gasoline powered rotary trimmer which is designed for brushcutting, weed control and grass trimming in areas which are difficult to control by any other means. The trimmer is equipped with a safety shoulder harness, and the excellent balance characteristics plus the available power, ensures comfortable operation.
RULES FOR SAFE OPERATION SAFETY INSTRUCTIONS WARNING 1. Do Not operate the unit when you are fatigued. 2. Do Not operate if other people or animals are in the work area. 3. Do Not operate the unit without the shield correctly in position. 4. Do Not operate in a confined area. Carbon monoxide exhaust gas is highly poisonous. 5. Do Not operate the unit while you are smoking. 6. Always wear eye protection goggles when operating the unit. 7.
NOMENCLATURE HAVE PARTS Part number 890177-51330 Gear housing Part number 890228-09560 Part number 890160-54130 Throttle trigger Shield Ignition switch Drive shaft assembly Grip Decompression device Muffler Spark plug Choke lever Air cleaner cover Fuel tank Shoulder harness Starter handle TECHNICAL DATA SRM-400U Dimension L×W×H Mass Engine Type Displacement Maximum revolution Carburetor Ignition cm 186 × 70 × 43 (73.2 in × 27.6 in × 16.9 in) kg 9.9 (21.
ASSEMBLING DRIVE SHAFT • Stand engine upright on a level floor. • Loosen bolts at drive shaft end of the engine. • Fit drive shaft assembly ensuring that the drive shaft is correctly engaged. • Tighten bolts to fasten drive shaft assembly. Bolts WARNING DANGER NEVER START ENGINE WITHOUT DRIVESHAFT ASSEMBLY INSTALLED. THIS COULD RESULT IN SERIOUS INJURY.
Loosen 4 right handle assembling bolts and insert right hand U-handle into right handle assembling bracket. (toward direction of arrow ) Right handle assembling bolt Right handle assembling bracket Fix the right hand U-handle by tightening 4 right handle assembling bolts lightly. Right hand U-handle To engine Adjust each inclination of right and left handles to adequate position (easy to operate) and tighten handle firmly assembling bolt (8 mm) and 4 right handle assembling bolts.
OPERATION GENERAL CHECK Oil Ensure that all nuts, screws and bolts installed are properly tightened. 1 FUEL STATEMENT Gasoline GASOLINE: Use 89 octane [(R+M)/2] gasoline or gasohol known to be good quality. Gasohol may contain maximum 10 % ethyl (grain) alcohol or 15 % MTBE (methyl tertiary-butyl ether). Gasohol containing methyl (wood) alcohol is not approved. 50 OIL: ECHO brand premium two-stroke 50 : 1 oil is requirred.
STARTING WARM ENGINE Decompression device • Press the decompression device. • When engine is warm, start it by pulling starter handle with switch positioned at START/RUN. (Keep choke lever in RUN (open) position) • If engine does not start in a few tries, follow same procedures as starting a cold. Starter handle HOLD THE UNIT FIRMLY. STOPPING ENGINE • Release throttle trigger and allow to run at an idle speed. • Slide ignition switch to “STOP” position.
WARNING DANGER WARNING DANGER • BEFORE STARTING UP THE ENGINE, MAKE SURE THAT THE CUTTER BLADE IS NOT CONTACTING ANYTHING. DO NOT ALLOW EITHER PEOPLE OR ANIMALS INTO THE WORK AREA. ALWAYS WEAR SAFETY GOGGLES WHEN CUTTING. DRESS PROPERLY - AVOID LOOSE CLOTHING. WHEN GRASS OR WEEDS HAVE CLOGGED THE CUTTER HEAD AFFECTING NORMAL OPERATION, FIRST, STOP THE ENGINE AND THEN REMOVE THE DEBRIS. • WHEN TWO OR MORE OPERATORS ARE WORKING TOGETHER, ENSURE THAT A SAFE DISTANCE IS KEPT BETWEEN THEM.
1. REPLACING LINE 1C 15 cm (6 in) 1D 1B A. Remove spool by turning knob clockwise, “right”, and separating parts. B. Thread a 6 m (20 feet) length of 2.4 mm (0.095 in) or 2.7 mm (0.105 in) ECHO line through hole in spool so that ends are the same length. C. Wind both ends of line tightly and evenly clockwise (see arrows on spool), and wind from side to side without twisting the lines. SPOOL 2A D. Secure ends of line temporarily with about 15 cm (6 in) extending out. HOUSING 2B 2.
SHOULDER HARNESS • Install the harness over the both shoulders and adjust shoulder straps so that the quick release latch rests low on the right hand side. PULL • Attach the trimmer/brushcutter to the harness by means of the quick release latch. • Make some practice sweeps as with a trimmer and readjust the harness as necessary for comfort and to maintain the cutter parallel to the ground.
MOWING • The nylon line will effectively mow large areas of heavy grass and/or weeds. Use the standard 12.5 to 15 cm (5 to 6 in) of line and operate at full throttle. • When mowing cultivated areas such as lawns hold the cutter head parallel to the ground to avoid scalping. SCALPING 1. The cleaning of weeds and grass right down to the earth can be accomplished very easily with the nylon line. 2.
WARNING DANGER 6. SHOULD THE BRUSHCUTTER BE OPERATED FOR AN EXTENDED PERIOD OF HIGH TEMPERATURES, THE GEAR BOX MAY BECOME VERY HOT. IF TOO HOT TO TOUCH, ALLOW THE UNIT TO COOL DOWN, CHECK THE LUBRICATION AS PER ‘MAINTENANCE’ AND CONTINUE TO OPERATE IF IN ORDER. SAFETY PRECAUTIONS 1. ALWAYS USE THE CORRECT BLADE FOR THE JOB AS RECOMMENDED. 2. BE CAREFUL NOT TO HIT ROCKS, STONES, TREE STUMPS OR ANY FOREIGN OBJECT WHICH MAY DAMAGE THE BLADE. 3. DO NOT CUT INTO THE GROUND TO AVOID DULLING THE BLADE. 7.
INSTALLING THE BLADE 1. The installation of the 8 tooth weed/grass blade (option) and the 80 tooth brush is exactly the same. Brush Blade (80 tooth) Weed/Grass Blade (8 tooth) 2. Rotate the drive shaft until the holes in the upper fixing plate and the gear box are aligned. Insert the locking tool. Upper fixing plate Locking tool 3. Remove the nylon line head, if fitted, by turning in a clockwise direction. Box wrench 4. Install the blade ensuring that it is centered correctly on the fixing plate. 5.
HEAVY WEED CUTTING • Install the 8 tooth 20 cm (8 in) blade. (option) • Observing all precautions as listed in this manual, start the engine and using full throttle, swing the blade in an arc as you move forward slowly. The cutter rotates counterclockwise and the debris will be pushed backwards so the work area will always be visible. BRUSHCUTTING • Install the 80 tooth blade. • Proceed exactly as for weed and grass cutting. SMALL TREES • The unit will effectively cut small trees up to 7.
MAINTENANCE AND CARE Latch Cleaner case - ALWAYS KEEP THE UNIT CLEAN AIR FILTER Clean before using the unit. - Close choke. Disengage latch and remove air cleaner cover. - Remove air filters (felt and sponge). - Air filter (flet): Brush off dust lightly or clean with compressed air. - Air filter (sponge): Brush off dust lightly or wash it in a non-inflammable solvent if necessary. - Soak air filter (sponge) into 2 stroke oil and squeeze it firmly not to allow remaining oil to trickle.
CHECK FUEL SYSTEM • Check before every use. • After refuelling make sure fuel does not leak or exude from around fuel pipe, fuel grommet or fuel tank cap. • In case of fuel leakage or exudation there is a danger of fire. Stop using the machine immediately and request your dealer to inspect or replace. SPARK PLUG • Check periodically. • Standard spark plug gap is 0.6 to 0.7 mm (0.024 to 0.028 in). • Replace if either electrode is worn or if the insulator is fouled by oil or other deposits.
EIGHT CUTTER BLADE 30° • Use only the blade designated by the manufacturer for this model. Cutter edge • When crack is noticed on the blade, never use it, but replace with a new one. 2R • Round the tooth bottom for 1- 2 mm radius in order to avoid the crack using a round file. Not sharpened 2mm - Rounded part is not to be sharpened. Tooth bottom - Sharpen each cutter equally so as to retain the balance of the blade.
Fuel is not reaching carburetor Table 1 There is fuel in the tank Fuel does not keep running Starting procedures correct There is spark at plug No spark at plug There is spark at high tension cord end Fuel is reaching cylinder No spark at high tension cord end Fuel is reaching carburetor Engine cranks Engine does not start (or, is difficult to start) Fuel is not reaching cylinder Acceleration and low speed function defective Carburetor overflow Fuel strainer clogged Clean or replace.
Table 2 Machine does not trim properly Engine speed insufficient Engine overheated Use fuel with correct mixing ratio. Never use gasoline of poor quality. Spark plug defective (burnt) Replace. As cooling fins clogged, air does not pass well Clean fins. Excessive deposits in combustion chamber Disassemble and remove carbon. Plug damaged or fouled Replace or clean. Combustion poor due to defective wiring Check wiring. High-speed needle setting incorrect Readjust.
