Echo SRM-420TES

27
Specifications
Specifications
These specifications are subject to change without notice.
SRM-420TES
LU
External dimensions:
Length × Width × Height 1852 × 355 × 312 mm 1852 × 700 × 620 mm
Mass:
Unit without fuel, cutting attachment and guard (ISO11806)
Unit with fuel, specified cutting attachment, guard and harness
8.0 kg
10.4 kg
8.7 kg
11.0 kg
Volume: Fuel tank 790 mL
Cutting attachment
Nylon line cutter type
Nylon cord size(square)
Nylon cord length
Thread
B6
3.0 mm
3 m (1.5 m × 2)
Left-handed M10×1.25
Gear ratio: Gear ratio and lubrication 2.08 reduction and good quality lithium grease
Rotational direction of output shaft seen from above: Anticlockwise
Engine:Type Air cooled two stroke, single cylinder
Engine displacement
Maximum shaft brake power, measured in accordance with ISO 8893
Engine speed at maximum engine power
Recommended maximum engine speed (With STD attachment in-
stalled)
Recommended engine idling speed
41.5 cm
3
1.78 kW
8500 r/min
10300 r/min
2800 r/min
Carburettor
Ignition
Spark plug
Starter
Clutch
Diaphragm type
Flywheel magneto - CDI system
NGK BPMR8Y
Recoil starter
Automatic centrifugal clutch
Fuel:
Oil
Ratio
Fuel consumption at maximum engine power
Specific fuel consumption at maximum engine power
Regular grade petrol. Minimum 89 Octane unleaded
petrol is recommended. Do not use fuel containing me-
thyl alcohol or more than 10 % of ethyl alcohol.
Two stroke, air-cooled engine oil. ISO-L-EGD Standard
(ISO/CD 13738), JASO FC,FD grade and ECHO Premi-
um 50 : 1 oil.
50:1 (2%)
1.05 L/h
430 g/(kW•h)
Vibration levels: (ISO 22867)a
hv,eq
Front handle 3.5 m/s
2
Rear handle 5.1 m/s
2
Uncertainty 1.2 m/s
2
Right handle 3.4 m/s
2
Left handle 4.5 m/s
2
Uncertainty 1.2 m/s
2
Sound pressure level: (ISO 22868) LpAeq
Uncertainty : (K
pA
)
97.6 dB(A)
1.5 dB(A)
96.6 dB(A)
1.5 dB(A)
Sound power level:(ISO 22868) L
WAd
(= L
WARa
+ K
WA
) 112.7 dB(A) 112.4 dB(A)