ECHO CS-501SX 18" Professional Petrol Chainsaw
If weight is a priority without wanting to compromise on power, the CS-501SX is hard to beat. At just 4.7kg dry, it's the lightest saw in its class — a serious achievement when you consider it's packing a 50.2cc engine pushing out 2.57kW. For professional arborists and forestry workers spending long days on the saw, that weight saving adds up significantly over the course of a shift.
The 18" bar makes it well suited to felling small to medium trees, and the pro-focused features set it apart from the weekend warrior crowd. The anti-icing carburettor system is a particularly handy touch for those cold winter mornings, and dropout prevention nuts mean you're not scrambling around in the undergrowth for lost hardware mid-job. The tool-less air filter cover and side-access chain tensioner keep maintenance quick and easy even with gloves on.
It's worth noting the decomp start system rather than ES-Start on this one — standard fare for a professional-grade saw, and seasoned users won't think twice about it.
Specifications
| Engine Displacement | 50.2cc |
| Output | 2.57kW / 3.5ps |
| Dry Weight | 4.7kg |
| Fuel Tank Capacity | 500ml |
| Chain Oil Tank Capacity | 280ml |
| Bar Length | 45cm / 18" |
| Chain Pitch | 0.325" |
| Bar Gauge | 0.058" |
| Ignition System | CDI |
| Start System | Decomp |
| Chain Brake | Inertia |
| Sound Pressure Level | 103.6 dB(A) |
| Sound Power Level | 113.5 dB(A) |
| Vibration (Front/Rear) | 5.2 / 5.4 m/s² |




