Echo CS-420ES Operator's Manual

Also see for CS-310ES: Service data

Echo CS-420ES Operator's Manual Manual pdf 31 page image

31SpecificationsModelExternal dimensions: Length × Width × Height mm 393 × 245 × 277Mass: Saw without guide bar and chain, empty tanks kg 4.6Volume:Fuel tankTank for chain lubrication oilFuel (Mixture ratio)Oil (Chain oil)mLmL410280Regular grade petrol.Minimum 89 Octane unleaded petrol is recommended.Do not use fuel containing methyl alcohol or more than10 % of ethyl alcohol.50 : 1 (2 %) for ISO-L-EGD Standard (ISO/CD13738),JASO FC, FD grade and ECHO Premium 50 : 1 oil or25 : 1 (4 %) for JASO FB grade oil.Special chain oil or motor oilCutting length:All specified usable cutting lengths of guide bar mm 380, 450Chain:Specified pitchSpecified gauge (thickness of drive links)Type of guide barGuide bar gaugeType of chainLubricationmmmmcmmm8.26 (0.325 inch)1.47 (0.058 inch)38, 45 (ECHO)1.47 (0.058 inch)Carlton K2LOregon 21BPXAdjustable automatic oil pumpSprocket: Specified number of teeth 7Engine:TypeCarburettorMagnetoSpark plugStarterPower transmissionEngine displacementMaximum shaft brake power (ISO 7293)Recommended maximum speed with cutting attachmentRecommended speed at idlingmL (cm3 )kWr/minr/minAir cooled 2-stroke single cylinderDiaphragm typeFlywheel magneto, CDI systemNGK BPM8YRecoil starter "ES" START (See page 2)Automatic centrifugal clutch40.21.6125002800Fuel consumption:Fuel consumption at maximum engine powerSpecific fuel consumption at maximum engine powerkg/hg/(kW•h)0.69423Other devices: Front hand guard, Rear hand guard,Throttle trigger lockout, Chain catcher, Chain brake,Anti-vibration device, Spiked bumper

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