Echo CS-4310SX 13" Petrol Chainsaw
The CS-4310SX is built around one number — 4.3kg. For a professional-grade saw with a 42.9cc engine producing 2.3kW, that weight is exceptional, and it's what makes this saw stand out in a crowded mid-size market. You get the power to fell confidently and the weight to use it comfortably for extended periods without fatigue setting in.
The headline feature is the centrifugal separation dust-free filtration system, a scaled-down version of the system found on Echo's larger CS-7310SX. Rather than relying solely on a standard air filter, it uses centrifugal force to strip out the bulk of dust and debris before air even reaches the automotive-style filter. In practice this means far less time cleaning filters and far longer intervals between maintenance — a meaningful advantage for anyone using the saw regularly.
Practical touches are well thought out throughout — flip lever caps for quick refuelling, a translucent tank so you can see fuel level at a glance, drop prevention nuts as standard, and a side-access chain tensioner that doesn't require additional tools. The heavy-duty aluminium handle with rubber grip and three-point anti-vibration system keeps fatigue low even on longer jobs.
Key Specifications
| Feature | Detail |
|---|---|
| Engine Displacement | 42.9cc |
| Power Output | 2.3kW |
| Dry Weight | 4.3kg |
| Bar Length | 33cm / 13" |
| Chain Pitch | 0.325" |
| Fuel Tank | 400ml |
| Chain Oil Tank | 270ml |
| Carburettor | Diaphragm |
| Sound Pressure | 103.1 dB(A) |
| Vibration (front/rear) | 3.3 / 3.1 m/s² |
