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PECIFICATIONS

MODEL ----------------------------------------------------- SRM-251U

Length ------------------------------------------------------- 1832 mm (72.12 in.)

Width -------------------------------------------------------- 695 mm (27.37 in.)

Height ------------------------------------------------------- 447 mm (17.62 in.)

Weight (dry) w/Cutter Head ------------------------------ 5.74 kg (12.67 lb.)

Engine Type ------------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine

Bore ---------------------------------------------------------- 34.0 mm (1.34 in.)

Stroke -------------------------------------------------------- 28.0 mm (1.10 in.)

Displacement ----------------------------------------------- 25.4 cc (1.55 cu. in.)

Exhaust ------------------------------------------------------ Spark Arrestor Muffler w/catalyst

Carburetor -------------------------------------------------- Walbro w/purge pump

Ignition System -------------------------------------------- Flywheel magneto, transistor control ignition type

Spark Plug -------------------------------------------------- NGK BPM-8Y (Gap 0.65 mm (0.026 in.)

Fuel ---------------------------------------------------------- Mixed (Gasoline and Two-stroke Oil)

Fuel/Oil Ratio ----------------------------------------------- 50:1 two-stroke air cooled engine oil

Gasoline ----------------------------------------------------- 89 Octane unleaded. DO NOT use fuel containing methyl alcohol,

more than 10% ethyl alcohol or 15% MTBE.

Oil ------------------------------------------------------------ Power Blend

Premium Universal 2-Stroke Oil

Fuel Tank Capacity ---------------------------------------- 0.42 lit. (14.2 US fl. oz.)

Recoil Starter System -------------------------------------- i-30 Automatic Recoil Starter

Clutch ------------------------------------------------------- Centrifugal Type

Vibration Isolated System --------------------------------- Rubber anti-vibration grip on handles.

Operating Rod ---------------------------------------------- 25.0 mm aluminum Tube

Drive Shaft -------------------------------------------------- 6.35 mm (1/4 in.) flexible shaft

Gear Case Ratio -------------------------------------------- 1:4.1 Reduction

Rotating Direction ----------------------------------------- Counter Clockwise; viewed from top

Cutter Head ------------------------------------------------- Nylon line head (2-line) with .095 Crossfire™ Line capacity

12m (40 ft.), 8 in. Grass/Weed Blade

Handle ------------------------------------------------------- U-Handle

Shoulder Harness ------------------------------------------ Standard

Idle Speed --------------------------------------------------- 2,400 - 3,200 RPM

Wide Open Throttle Speed (W.O.T.)

with Nylon Line Head ------------------------------------- 8,500 - 10,500 RPM

Wide Open Throttle Speed (W.O.T.)

with Blade -------------------------------------------------- 9,500 - 11,500 RPM

Содержание SRM-251U

Страница 1: ...afeoperationandinstructionscarefully ECHOprovidesanOperator s ManualandaSafetyManual Bothmustbereadandunderstoodforproperandsafe operation Grass Trimmer Brush Cutter Operator s Manual MODEL SRM 251U X...

Страница 2: ...Manual Safety Symbols and Important Information 3 International Symbols 3 Personal Condition and Safety Equipment 4 EquipmentCheck 6 EmissionControl 8 Description 7 Contents 9 Assembly 10 Plastic Shi...

Страница 3: ...sed Choke Control Run Position ChokeOpen Do not use blades String lineonly IMPORTANT The enclosed message provides information necessary for the protec tion of the unit NOTE This enclosed message prov...

Страница 4: ...tures are cooler WARNING DANGER 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 mus...

Страница 5: ...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 dev...

Страница 6: ...UAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS EQUIPMENT CHECK WARNING DANGER Use only ECHO approved attachments Serious injury may result from the use of a non approved attachment combination ECH...

Страница 7: ...decals are legible and that you understand and follow the instruc tions on them If a decal cannot be read a new one can be ordered from your ECHO dealer See PARTS ORDERING instructions for specific i...

Страница 8: ...t a cut off knife the line will become too long the engine will overheat and engine damage may occur 13 PLASTICDEBRISSHIELDASSEMBLY Includedinplasticbag co pack MUST beinstalledonunitbeforeuse see Ass...

Страница 9: ...x16mmscrews shieldmtg __ 1 3mmHexagonWrench __ 1 4mmHexagonWrench __ 1 8mmx55mmbolt __ 1 flatwasher __ 2 cableclips __ 1 Plastic Bag __ 3 5mmx15mmscrews shieldmount __ 2 5mmx8mmscrews brackettoshield...

Страница 10: ...to remove 3 Remove locking tool Retain lower plate blade nut and cotter pin for future use with blade conversions 4 Align plastic debris shield F with the drive shaft and install on the bottom of the...

Страница 11: ...de installation Retain plastic shield shield plate and plastic shield hardware for conver sion back to nylon line operation 2 Align hole in upper plate D with notch in gear housing G and insert lockin...

Страница 12: ...t securely 4 Insert Split Pin A in hole in PTO shaft and bend pin legs around shaft counterclockwise to retain 10 mm nut IMPORTANT Never reuse a cotter pin install a new cotter pin each time a blade i...

Страница 13: ...iner block to make necessary adjustments 6 Pivot retainer plate up to secure throttle cable cap and tighten screw 7 Connect ignition stop leads C and D 8 Bundle and secure ignition leads against engin...

Страница 14: ...3 4 in diameter or larger 80 Tooth Brush Blade P N 69500120331 is designed for cutting brush and woody growth up to 64 mm 2 1 2 in diameter 22ToothClearingBlade 99944200130 isdesignedfordensethickets...

Страница 15: ...tion IMPORTANT EchopremiumPowerBlendTM Universal2 StrokeOilmaybemixed at 50 1 ratio for application in all Echo engines sold in the past regardless of ratio specified in those manuals Handling Fuel WA...

Страница 16: ...er is added IMPORTANT Stored two stroke fuel may separate ALWAYS shake fuel container thor oughly before each use STARTING COLD ENGINE WARNING DANGER The attachment will operate immediately when the e...

Страница 17: ...DO NOT close the choke and do not depress throttle trigger to wide open position WARNING DANGER The attachment should not move at idle otherwise serious personal injury may result NOTE If attachment...

Страница 18: ...not equipped with the necessary tools you may want to take your unit to an ECHO Service Dealer for maintenance To help you decide whether you want to DO IT YOURSELF or have the ECHO Dealer do it each...

Страница 19: ...s e r r A k r a p S r e l f f u M e c a l p e R t c e p s n I 2 R I x e l F t f a h S e v i r D s l e d o M e l b a C e s a e r G 2 1 I g n i s u o H r a e G e s a e r G 2 2 I e p o R r e t r a t S l...

Страница 20: ...lement can be cleaned and reused be certain it still fits the cavity in the air cleaner cover is installed with the original side out FUEL FILTER Level1 Tools Required 200 250mm 8 10in lengthofwire wi...

Страница 21: ...LING SYSTEMS CLEANING Level2 Tools Required 3 4 mm Hex Wrench cleaning brush 25 or 50 mm 1or2in Parts Required None if you are careful IMPORTANT To maintain proper engine operating temperatures coolin...

Страница 22: ...Screen Level2 Tools Required Cross Head Screwdriver Soft Metal Brush 4mmHexWrench Parts Required Spark Arrestor Screen Gasket 1 Remove spark plug lead 2 Remove one 1 muffler cover screw and muffler co...

Страница 23: ...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 Adjustmen...

Страница 24: ...caps prevent exceeding emission limits and over rich adjustment but not over lean adjustment which can cause engine failure Do not exceed recommended HI speed engine R P M during operation or for long...

Страница 25: ...rease if necessary DO NOT over fill Drive Shaft 1 Loosen two 2 screws B and remove center locating screw C Pull gear box and shield from drive shaft housing 2 Pull flexible cable from the drive shaft...

Страница 26: ...one on each side of barrier 3 Wind both lines tightly and evenly one on each side of barrier in the direction of arrow on bottom of spool 4 Place ends of lines into notches in spool leaving 6 in prot...

Страница 27: ...nsafe handling due to vibration and can result in blade failure Tool required Flatfile preferred Electricgrinderifspecialcareis used Round rat tail file for gullet radius 1 File each tooth at a 30 deg...

Страница 28: ...u l P n i 6 2 0 0 m m 5 6 o t t s u j d A e c a l p e r r o n a e l C e c a l p e r r o n a e l C g u l p e c a l p e R e n i g n E s n u r r o s e i d t u b t o n s e o d e t a r e l e c c a y l r e...

Страница 29: ...r reach an open flame or spark 2 Place the stop switch in the STOP position 3 Remove accumulation of grease oil dirt and debris fromexteriorofunit 4 Perform all periodic lubrication and services that...

Страница 30: ...ane unleaded DO NOT use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Oil PowerBlendTM PremiumUniversal2 StrokeOil Fuel Tank Capacity 0 42lit 14 2USfl oz RecoilStarterSystem i 3...

Страница 31: ...GRASS TRIMMER BRUSH CUTTER OPERATOR S MANUAL 31 NOTES...

Страница 32: ...you may call the ECHO ConsumerProductSupportDepartmentat1 800 673 1558from8 30am to 4 30 pm Central Standard Time Monday through Friday Before calling please know the model and serial number of your...

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