The lightest and most powerful chain saw in its class.



Where to buy

The Shindaiwa 431sx has been designed to be ultra light weight without compromising on power. The saw weighs just 4.3 kg yet has a 42.9 cm³ professional grade engine that provides an impressive 2.3 kW or 70 ps/L of power. These specifications give it the best power to weight ratio in its class and mean you get great power coupled with extreme maneuverability. Suitable for smaller jobs like cutting firewood all the way up to the felling of small trees, the 431sx offers versatility for the professional. The industry leading air filtration system utilizes centrifugal forces to remove dust and debris before reaching the automotive style, heavy duty air filter. This is a scaled down version of the system found in the Shindaiwa 731sx.

Features for the professional.

Features for the professional.

The 431sx 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 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.

Lightest and most powerful in its class.

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 ration in its class.

Best Features

Power to weight

Super light-weight design with exceptional power.


Designed to maximise efficiency and comfort.


Provides 70 ps/L of power.

Product Details

CO² (g/kW・h) 1 846
Sound power level (dB(A)) 111.2
Sound pressure level (dB(A)) 102
Vibration Front handle/Rear handle (m/s²) 3.3 / 3.1
Applicable Bar Length (cm/inch) 2 33, 35, 40, 45 / 13, 14, 16, 18
Carburettor Diaphragm
Chain Oil Tank Capacity 270.000
Dry Weight (kg) 4.3
Engine displacement (cm³) 42.9
Fuel Consumption At Maximum Engine Power (L/h) 1.24
Fuel tank capacity (l) 0.40
Guide Bar Gauge (inch) 0.050
Output (kw) 2.3
Output (ps) 3.1
Saw Chain Pitch (inch) 0.325
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.
Not all lengths available in every country. Available bar lengths may incur differing RRPs. Please check with your local dealer.