SRM-266
SPECIFICATIONS
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© 02/21 ECHO Incorporated
SPECIFICATIONS
MODEL SRM-266
Length w/o cutter head 1810 mm (71.3 in.)
Width 250 mm (9.85 in.)
Height 340 mm (13.4 in.)
Weight (dry) w/o cutter head 5.56 kg (12.3 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 25.4cc (1.55 cu. in.)
Exhaust
Spark arrestor muffler or spark arrestor muffler with
catalyst
Carburetor Diaphragm w/purge pump
Ignition System Flywheel magneto, capacitor discharge ignition type
Spark Plug NGK BPMR-8Y (Gap 0.65 mm (0.026 in.)
Fuel Mixed (Gasoline and Two-stroke Oil)
Gasoline/Oil Ratio 50:1
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
ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345- FD
,
two-stroke, air-cooled engine oil.
Fuel Tank Capacity 0.50 L (16.9 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 SRM-266) 6.35 mm (1/4 in.) flexible shaft
Gear Case Ratio
1:4
Rotating Direction Counter Clockwise; viewed from top
Cutter Head Speed Feed
®
Nylon line head, Line capacity 6 m (20 ft.)
Handle Front - loop, Rear handle (w/o rubber)
Shoulder Harness Optional
Idle Speed 2,900 RPM
Clutch Engagement Speed 3,900 RPM
Wide Open Throttle Speed
(W.O.T.)
9,500 RPM
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