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MODEL  ---------------------------------------------------- SRM-280, SRM-280S

Length w/o cutter head ------------------------------------ 1802 mm  (70.94 in.)
Width -------------------------------------------------------- 246 mm  (9.69 in.)
Height ------------------------------------------------------- 349 mm  (13.74 in.)
Weight (dry) w/o Cutter Head  (SRM-280)  ----------- 5.57 kg  (12.3 lb.)
Weight (dry) w/o Cutter Head  (SRM-280S) ----------- 5.50 kg  (12.1 lb.)
Engine Type ------------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine
Bore ---------------------------------------------------------- 34.0 mm (1.34 in.)
Stroke -------------------------------------------------------- 31.0 mm (1.22 in.)
Displacement ----------------------------------------------- 28.1 cc (1.71 cu. in.)
Exhaust ------------------------------------------------------

Spark arrestor muffler or spark arrestor muffler with catalyst

Carburetor--------------------------------------------------- Walbro diaphragm model w/purge pump 
Ignition System -------------------------------------------- Flywheel magneto, capacitor discharge
Spark Plug -------------------------------------------------- NGK BPM-8Y (Gap 0.65 mm (0.026 in.)

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

Fuel/Oil Ratio ---------------------------------------------- 50 : 1 Power Blend X™ ISO-L-EGD (ISO/CD 13738) and 

J.A.S.O. M345- 

FC/FD, two-stroke, air-cooled engine oil.

Gasoline ----------------------------------------------------- Use 89 Octane unleaded. Do not use fuel containing methyl 

alcohol, more than 10% ethyl alcohol or 15% MTBE. Do not use 

alternative fuels such as E-15 or E-85.

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

TM

 Premium Universal 2-Stroke Oil

Fuel Tank Capacity ----------------------------------------

0.64 lit. (21.6 US fl. oz.)

Starter System ---------------------------------------------- Automatic Rewind Starter
Clutch-------------------------------------------------------- Centrifugal Type
Vibration Isolated System -------------------------------- Rubber cushion on engine mount (heavy duty).  Rubber grip on 

front and rear handles

Operating Rod ---------------------------------------------- 25.0 mm aluminum Tube
Drive Shaft (SRM-280) -----------------------------------

6.35 mm (1/4 in.) flexible shaft

Drive Shaft (SRM-280S) --------------------------------- 7.0 mm  hollow  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 6m 

(20 ft.) 

Handle ------------------------------------------------------- Front - Loop and Right Rear Handle w/rubber grips
Shoulder Harness ------------------------------------------ Optional
Idle Speed --------------------------------------------------- 2,500 - 3,000 RPM
Clutch Engagement Speed -------------------------------- 3,750 RPM
Wide Open Throttle Speed (W.O.T.)  ------------------- 8,500 -12,000 RPM

Summary of Contents for Grass Trimmer/Brush Cutter SRM-280

Page 1: ...y ECHO provides an Operator s Manual and a Safety Manual Both must be read and understood for proper and safe operation Failure to do so could result in serous injury Grass Trimmer Brush Cutter Operat...

Page 2: ...rk Plug 20 Cooling System Cleaning 20 Exhaust System 21 Carburetor Adjustment 22 High Altitude Operation 22 Lubrication 23 Nylon Line Replacement 24 Sharpening Metal Blades 26 Troubleshooting 27 Stora...

Page 3: ...use blades String line only personal condition and safety equipment WARNING Users of this product risk injury to themselves and others if the unit is used improperly and or safety precautions are not...

Page 4: ...id Weather Heavy protective clothing can increase operator fatigue which may lead to heat stroke Schedule heavy work for early morning or late afternoon hours when temperatures are cooler Extended Ope...

Page 5: ...les 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...

Page 6: ...tifying the engine emis sions output meets applicable emissions regulations provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual WARNING Movin...

Page 7: ...safety decals on your unit Make sure the 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 PA...

Page 8: ...sing Assem bly just above the cutting attachment Helps protect the operator by deflecting debris produced during the trimming operation This shield must be replaced with the steel shield for blade use...

Page 9: ...operation _______1 Power Head Drive Shaft Assembly ______ 1 Operator s Manual ______ 1 Safety Manual ______ 1 Warranty Registration Card _______ 1 Safety Glasses ______ 1 Nylon Trimmer Head ______ 1 w...

Page 10: ...nce trimmer line Tip To advance trimmer line tap trimmer head against the ground while the head is turning at normal operating speed IMPORTANT Semi automatic nylon line heads must be used only with pl...

Page 11: ...ont handle location 1 Position front handle for comfortable operation and secure screws WARNING Operation of this equipment may create sparks that can start fires around dry vegetation This unit is eq...

Page 12: ...tall these parts Blade Mounting Hardware New Cotter Pin New Cotter Pin New Cotter Pin New Cotter Pin WARNING DO NOT INSTALL BLADES ON GT CURVED SHAFT MODEL TRIMMERS Arbor diameter of Upper Blade Plate...

Page 13: ...Blade operation The Shoulder Waist Harness when used in a trimming operation with nylon line head suspends the trimmer from the operator s shoulder and reduces operator fatigue During blade operation...

Page 14: ...ds must be used Echo brand premium Power Blend X TM Universal 2 Stroke Oil meets these standards Engine problems due to inadequate lubrication caused by failure to use an ISO L EGD ISO CD 13738 and J...

Page 15: ...duce fuel spillage After use DO NOT store a unit with fuel in its tank Leaks can occur Return unused fuel to an approved fuel storage container Storage Fuel storage laws vary by locality Contact your...

Page 16: ...and keep movable attachment parts clear of all obstacles Firmly grasp right hand grip and throttle trigger lockout with left hand and fully depress throttle trigger to wide open position Rapidly pull...

Page 17: ...P posi tion 2 Purge Bulb Pump purge bulb C until fuel is visible in the Clear fuel return line 3 Recoil Starter Lay the unit on a flat area and keep movable attachment parts clear of all obstacles Rap...

Page 18: ...d ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier COMPONENT SYSTEM MAINTENANCE PROCEDURE REQ D SKILL LEVEL DAILY OR BEFORE USE EVERY REFUEL 3 MONTHS OR 90 HOURS YE...

Page 19: ...e rubber sealing edges are deformed 4 If filter can be reused be certain it Fits tightly in the air filter cavity Is installed with the original side out 5 Install air filter cover fuel filter Level 1...

Page 20: ...stem Level 2 Tools required Cross Head Screwdriver 3 4 mm Hex Wrench Cleaning Brush 25 50 mm 1 2 in Parts Required None if you are careful IMPORTANT To maintain proper engine operating temperatures co...

Page 21: ...ORTANT DO NOT use a metal scraper to remove dirt from the cylinder fins 5 Use brush to remove dirt from the cylinder fins 6 Remove grass and leaves from the grid between the recoil starter and fuel ta...

Page 22: ...ts Required As needed Heat Shield 1 Remove spark plug lead from spark plug and remove muffler cover 2 screws 2 Place piston at top dead center Remove muffler A heat shield B and eyeplate C 3 Use a woo...

Page 23: ...f the engine is adjusted for operation above 1 100 feet ASL the carburetor must be re adjusted when operating the engine below 1 100 feet ASL otherwise severe engine damage may result Level 2 Tools re...

Page 24: ...or squeeze type tube Do not use high pressure grease gun DO NOT over fill Drive Shaft SRM 280 Only 1 Loosen two 2 screws B and remove center locating screw C Pull gear box and shield from drive shaft...

Page 25: ...evenly one on each side of barrier in the direction of arrow on bottom of spool 5 Place ends of lines into notches in spool leaving 6 in protruding 6 Feed ends of line outward through eyelets in drum...

Page 26: ...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 degree angle a specific n...

Page 27: ...s n r u T r e l a e d o h c E r u o y e e S r e l a e d o h c E r u o y e e S g u l p t a k r a p S k r a p s o N t c e r r o c n i p a g k r a p S n o b r a c h t i w d e r e v o C l e u f h t i w d...

Page 28: ...ace the stop switch in the OFF position 3 Remove accumulation of grease oil dirt and debris from exterior of unit 4 Perform all periodic lubrication and services that are required 5 Tighten all the sc...

Page 29: ...C FD two stroke air cooled engine oil Gasoline Use 89 Octane unleaded Do not use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Do not use alternative fuels such as E 15 or E 85...

Page 30: ...ill be covered by this limited warranty for five 5 years from date of purchase EXCEPTIONS For two stroke engine powered products the electronic ignition module flexible drive cables SRM solid drive sh...

Page 31: ...hments Incorrect storage procedures stale fuel including failure to provide or perform required maintenance services as prescribed in the operator s manual Preventative maintenance as outlined in the...

Page 32: ...ned built and equipped to conform with applicable EPA and C A R B emissions standards and that your equipment SORE is free from defects in material and workmanship that would cause it to fail to confo...

Page 33: ...Grass Trimmer Brush Cutter 33 Operator s Manual notes...

Page 34: ...34 notes...

Page 35: ...Grass Trimmer Brush Cutter 35 Operator s Manual notes...

Page 36: ...able on our Web Site When presenting your unit for Warranty service repairs proof of purchase is required echo consumer product support If you require assistance or have questions concerning the appli...

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