Successor to the CS-620SX - heavy duty, professional chain saw.


The CS-621SX is a reduced emissions version of the CS-620SX. Fitted with the latest ECHO 59.8cc engine (made in Japan), this model generates markedly less emissions whilst retaining the power and dependability that made its predecessor so special.

Low emissions.

Low emissions.

Utilising the latest technology to ensure industry leading low emissions, whilst retaining performance far beyond its specs.

Built for daily commercial use.

Built for daily commercial use.

Built to the highest possible standards in Japan and tested in the harshest environments, the CS-621SX won't let you down.

Power and balance.

Power and balance.

Balanced, ergonomic design for maneuverability and precision.

Best Features.


Featuring one of ECHO's most powerful engines.


Designed to maximise efficiency and comfort.

Light weight

Engineered to weigh less whilst retaining robust durability.

Product Details.

Dry Weight (kg) 6.3
Chain Oil Tank Capacity 0.300
Chain Brake Inertia
Applicable Bar Length (cm/inch) 45, 50, 60 / 18, 20, 24
Output (kw) 3.2
Ignition System CDI
Chain Tensioner Side
Fuel tank capacity 0.650
Start Assist System Decomp
Saw Chain Pitch (inch) 3/8
Engine displacement (cm³) 59.8
Fuel Consumption At Maximum Engine Power (L/h) 1.81
Guide Bar Gauge (inch) 0.058
Output (ps) 4.4
Choke w/ Automatic Fast Idle Release Yes
Vibration Front handle/Rear handle (m/s²) 4.2 / 5.2
Sound pressure level (dB(A)) 101.6
Sound power level (dB(A)) 113.4
CO2 (g/kW・h) 1 712

1 This CO₂ measurement results from testing a (parent) engine representative of the engine type (engine family) over a fixed test cycle under laboratory conditions and does not imply or express any guarantee of the performance of a particular engine.

Other Features.

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