CS-4310SX

The most powerful and lightest chain saw in its class.

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The ECHO CS-4310SX is a professional grade, mid sized chain saw suitable for a wide range of applications, including felling. With an extremely light weight and durable frame and a powerful 42.9 cm³ 2-stroke engine it provides the best power to weight ratio in its class. This means you get extreme maneuverability and comfort without compromising on power. The industry leading, centrifugal separation dust free system is a scaled down version of the filtration system found in the CS-7310SX. This system uses centrifugal forces and an automotive style filter to ensure your engine and internal components stay free from dust and debris, massively reducing the need for maintenance.

Lightest and most powerful in its class.

Weighing just 4.3 kg with a 42.9 cm³ engine that provides 2.3 kW power the CS-4310SX has the best power to weight ratio in its class.

Features for the professional.

The CS-4310SX is packed with features to increase your productivity:

Heavy-duty aluminum handle with rubber grip for secure grip and 3-point anti vibration spring.

Features for easy maintenance:

Momentary switch for quick and easy engine restart.

Rotating plastic chain catcher.

Side access chain tensioner for easy chain adjustment.

Flip lever caps for easy refilling.

Drop prevention nuts as standard.

Translucent fuel tank shows fuel level.

Centrifugal separation system.

Centrifugal separation dust-free system massively reduces the need for maintenance by removing dust and debris in stages before air even reaches the automotive style air filter.

Best Features.

Power to weight

Super light-weight design with exceptional power.

Ergonomics

Designed to maximise efficiency and comfort.

Light weight

Engineered to weigh less whilst retaining robust durability.

Product Details.

Engine displacement (cm³)	42.9
Output (kw)	2.3
Output (ps)	3.1
Dry Weight (kg)	4.3
Fuel tank capacity (l)	0.40
Chain Oil Tank Capacity	0.270
Fuel Consumption At Maximum Engine Power (L/h)	1.24
Priming Pump	Yes
Ignition System	CDI
Start Assist System	ES-Start
Chain Brake	Inertia
Choke w/ Automatic Fast Idle Release	Yes
Chain Tensioner	Side
Saw Chain Pitch (inch)	0.325
Guide Bar Gauge (inch)	0.050
Applicable Bar Length (cm/inch) ¹	33, 35, 40, 45 / 13, 14, 16, 18
Vibration Front handle/Rear handle (m/s²)	3.3 / 3.1
Sound power level (dB(A))	111.2
Sound pressure level (dB(A))	102
CO² (g/kW・h) ²	846
Carburettor	Diaphragm

1: Not all lengths available in every country. Available bar lengths may incur differing RRPs. Please check with your local dealer.
2: 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.