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Grass Trimmer/Brush CuTTer
OperaTOr's manual
33
specIfIcatIons
MODEL ---------------------------------------------------- SRM-280U
Length ------------------------------------------------------- 1805 mm (71.1 in.)
Width -------------------------------------------------------- 700 mm (27.6in.)
Height ------------------------------------------------------- 515 mm (20.3 in.)
Weight (dry) w/Cutter Head ------------------------------ 6.38 kg (14.1 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 mufer or spark arrestor mufer with catalyst
Carburetor--------------------------------------------------- Diaphragm model w/purge pump
Ignition System -------------------------------------------- Flywheel magneto, capacitor discharge 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 Power Blend X™ ISO-L-EGD (ISO/CD 13738) and
J.A.S.O. M345- 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 ---------------------------------------- 0.61 lit. (20.6 US . oz.)
Starter System ---------------------------------------------- Automatic Rewind Starter
Clutch-------------------------------------------------------- Centrifugal Type
Vibration Isolated System -------------------------------- Rubber cushion on engine mount (heavy duty). Rubber grip on
front handle.
Operating Rod ---------------------------------------------- 25.0 mm aluminum Tube
Drive Shaft -------------------------------------------------- 6.35 mm (1/4 in.) exible shaft
Gear Case Ratio -------------------------------------------- 1.4:1 Reduction
Rotating Direction ----------------------------------------- Counter Clockwise; viewed from top
Cutter Head ------------------------------------------------- Nylon line head (2-line) with .095 Crossre™ Line capacity
12m (40 ft.)
Handle ------------------------------------------------------- U-Handle
Shoulder Harness ------------------------------------------ Standard
Idle Speed --------------------------------------------------- 2,800 RPM
Clutch Engagement Speed -------------------------------- 3,800 RPM
Wide Open Throttle Speed (W.O.T.)
with Nylon Line Head ------------------------------------ 9,700 RPM
Wide Open Throttle Speed (W.O.T.) with Blade ------ 11,000 RPM