* Technical data subject to change without notice.
TECHNICAL DATA
MODEL
cS-490
Dimension L × W × H mm 395 × 250 × 290
Mass Power head, dry kg 4.8 Without chain and guide bar
Engine Type Air-cooled two-stroke single cylinder
Displacement mL (cm³) 50.2
Carburetor Diaphragm type
Magneto Flywheel magneto: CDI system
Spark plug NGK BPMR8Y
Starter Recoil starter
Power transmission Automatic centrifugal clutch
Fuel Mixture ratio
50:1ratiowithECHOPowerBlendX™,ISO-L-
EGD (ISO/CD 13738) and JASO M345-FD two-
stroke, air-cooled engine oil.
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.
Tank capacity L 0.490
Oil Bar and chain ECHO bar and chain oil
Tank capacity L 0.280
Guide bar and
saw chain
See page 23 for Chain and Guide Bar Combination
Lubrication Adjustable automatic oil pump
Engine speed Idle
r/min
2600 - 3600
Clutch engagement 3600 - 4200
Wide open throttle 11000 - 12500
Standard
features
Front hand guard, Rear hand guard,
Anti-vibration device, Spiked bumper,
Throttle control lockout, Chain brake, Chain catcher,
Spark arrestor muffler, Kick guard
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