Specifications - Echo PB-251 - 11-09 Operator's Manual

s
peCIfICaTIons
MODEL ---------------------------------------------------- PB-251 hand held
Length ------------------------------------------------------ 340 mm (13.4 in.) (w/o pipes)
Width -------------------------------------------------------- 270 mm (10.6 in.)
Height ------------------------------------------------------- 350 mm (13.8 in.)
Weight (dry) ------------------------------------------------ 4.5 kg (9.9 lb.)
Engine Type ------------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine
Displacement ----------------------------------------------- 25.4cc (1.55 cu. in.)
Bore ---------------------------------------------------------- 34.0 mm (1.34 in.)
Stroke -------------------------------------------------------- 28.0 mm (1.10 in.)
Carburetor--------------------------------------------------- Zama Diaphragm model w/primer bulb
Ignition System -------------------------------------------- Flywheel Magneto, capacitor discharge ignition type
Spark Plug -------------------------------------------------- NGK BPM8Y Gap 0.65 mm (0.026 in.)
Exhaust System -------------------------------------------- Spark arrestor muffler or spark arrestor muffler with catalyst
Fuel ---------------------------------------------------------- Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio ---------------------------------------------- 50 : 1 Power Blend X ™ ISO-L-EGD (ISO/CD 13738) and
Gasoline ----------------------------------------------------- Use 89 Octane unleaded. Do not use fuel containing methyl
Oil ------------------------------------------------------------ Power Blend X ™ Premium Universal 2-Stroke Oil
Fuel Tank Capacity ---------------------------------------- 0.5 lit. (16.9 US fl. oz.)
Recoil Starter System ------------------------------------- Automatic Recoil Starter Centrifugal Type
Idle Speed (RPM) ------------------------------------------ 2,800 - 3,200
Wide Open Throttle Speed (RPM) ---------------------- 6,700 - 7,200
Maximum Air Speed w/pipes (MPH) ------------------- 64.8 m/sec (145 mph)
Maximum Air Volume ------------------------------------ 11.0 m
Sound Level at 50 ft. dB(A) scale per ANSI B175.2 - 65 dB(A)
o
J.A.S.O. M345- FC/FD, two-stroke, air-cooled engine oil.
alcohol, more than 10% ethyl alcohol or 15% MTBE. Do not use
alternative fuels such as E-15 or E-85.
min. (390 cu. ft./min.)
3/
P B
ower lower
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Perator s anual
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