OPERATOR’S MANUAL ECHO TRIMMER/ BRUSHCUTTER SRM-400 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-400 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 Gear housing Decompression device Drive shaft assembly Muffler Spark plug Ignition switch Shield Throttle trigger Grip Choke lever Air cleaner cover Shoulder harness Starter handle Fuel tank TECHNICAL DATA SRM-400 Dimension L×W×H Masses Engine Type Displacement Max 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 uprignt 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. • Tignten 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 firmly handle assembling bolt (8 mm) and 4 right handle assembling bolts.
OPERATION GENERAL CHECK Oil • 1 Gasoline FUEL STATEMENT 50 R+M GASOLINE : Use 89 octane ( ) gasoline or 2 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. Fuel mix chart (50 : 1) US GAS GAL 1 2 5 Eneure that all nuts, screws and bolts installed are properly tightened. OIL FL OZ 2.6 METRIC GAS OIL L mL 4 80 5.1 12.
STARTING WARM ENGINE Decompression device • When engine is warm, start it by pulling recoil starter rope with switch positioned at START/ RUN. (Keep choke lever in RUN (open) position) • Press the decompression device. • If engine does not start in a few tries, follow same procedures as starting a cold. HOLD THE UNIT FIRMLY. STOPPING ENGINE • Release throttle trigger and allow to run at an idle speed. • Side ignition switch to “STOP” position.
WARNING DANGER WARNING 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. DANGER • BEFORE STARTING UP THE ENGINE, MAKE SURE THAT THE CUTTER BLADE IS NOT CONTACTING ANYTHING. • 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. • 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 pararell to the gound 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 line head, if fitted, by turning in a clockwise direction. Box wrench 4.
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 counter-clockwise 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 - ALWAYS KEEP THE UNIT CLEAN AIR FILTER Latch • Clean before using the unit. - Close choke. Disengage latch and remove air cleaner cover. Air filter - Remove air filter. Air cleaner cover - Brush off dust lightly or clean with compressed air. - Reinstall cover and engage latch. FUEL STRAINER • Check periodically. - Do not allow dust to enter into fuel tank. - Clogged strainer will cause difficulty in starting engine or abnormalities in engine performances.
SPARK PLUG 0.6 - 0.7 mm (.024 - .028 in) • 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. • TORQUE = 14.2 to 15.2 N•m (125 to 135 in lb) CAUTION Do not over torque. GEAR HOUSING Gear housing • Remove the bolt every 50 hours and check. • Replenish as necessary, but do not overfill. - Shell delpena or good quality lithium multi grease is recommendable.
EIGHT CUTTER BLADE 30° • Use only the blade designated by the manufacturer for this model. • When crack is noticed on the blade, never use it, but replace with a new one. • Round the teeth bottom for 1- 2 mm radius in order to avoid the crack using a round file. Cutter edge 2R 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 Fuei 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.
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.
