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GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
31
* Install and use U-Handle when operating any model with blade.
MODEL -----------------------------------------------------SRM-230U
Length ------------------------------------------------------- 1795 mm (70.7 in.)
Width--------------------------------------------------------700 mm (27.68 in.)
Height ------------------------------------------------------- 455 mm (17.9 in.)
Weight (dry) w/Cutter Head ------------------------------ 5.72 kg (12.6 lb.)
Engine Type ------------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine
Bore ----------------------------------------------------------32.2 mm (1.27 in.)
Stroke --------------------------------------------------------28.0 mm (1.10 in.)
Displacement -----------------------------------------------22.8 cc (1.39 cu. in.)
Exhaust ------------------------------------------------------Spark Arrestor Muffler w/catalyst
Carburetor -------------------------------------------------- Zama diaphragm model w/purge pump
Ignition System --------------------------------------------Flywheel magneto, capacitor discharge ignition
Spark Plug -------------------------------------------------- NGK BPM-8Y (Gap 0.65 mm (0.026 in.)
Fuel ----------------------------------------------------------Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio ----------------------------------------------- 50:1 Ratio using ECHO Hi-Performance, two-stroke air cooled
engine oil
Gasoline ----------------------------------------------------- Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be
good quality. Gasoline may contain up to 10% Ethanol (grain
alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline
containing methanol (wood alcohol) is NOT approved.
Oil ------------------------------------------------------------ECHO Hi-Performance, two-stroke air cooled engine oil
Fuel Tank Capacity ---------------------------------------- 0.58 lit. (19.6 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 handle.
Operating Rod ---------------------------------------------- 25.0 mm aluminum Tube
Drive Shaft -------------------------------------------------- 6.35 mm (1/4 in.) flexible shaft
Gear Case Ratio --------------------------------------------1:1.4 Reduction
Rotating Direction -----------------------------------------Counter Clockwise; viewed from top
Cutter Head ------------------------------------------------- Nylon line head (2-line) with .095 Crossfire™ Line capacity
6m (20 ft.)
Handle* ----------------------------------------------------- U-Handle
Shoulder Harness ------------------------------------------ Standard
Idle Speed--------------------------------------------------- 2,750 - 3,250 RPM
Clutch Engagement Speed -------------------------------- 3,500 - 4,100 RPM
Wide Open Throttle Speed (W.O.T.)
with Nylon Line Head ------------------------------------- 8,500 RPM Min.
Wide Open Throttle Speed (W.O.T.)
with Blade -------------------------------------------------- 9,000 RPM Min.
SPECIFICATIONS