Industry leading, lightweight professional petrol chain saw, ideal for felling.


The lightest saw in its class, with enough power to breeze through any job. Part of the ECHO X Series meaning it has industry leading features and performance.

Professional engine

Professional engine

Featuring a powerful 50.2 cc profesional grade engine, giving exceptional power and performance.

Compact, ergonomic design

Compact, ergonomic design

The lightest saw in its class, the CS-501SX has many features appreciated by professionals. These include a starter grip assist cap opener; dropout prevention nuts; a tool-less air filter cover allowing easy air filter access, even when wearing gloves; a side access chain tensioner enabling easy chain adjustment; an anti-icing system preventing the carburettor from freezing in colder months

Starter grip assist caps

Starter grip assist caps

Starter grip can be used to open the caps manually.

Best Features.


Engineered to weigh less whilst retaining robust durability.

Power to weight ratio

Super light-weight design with exceptional power.


Designed to maximise efficiency and comfort.

Product Details.

dry weight (kg) 4.70
Chain Oil Tank Capacity (L) 0.28
Chain Brake Inertia
engine displacement (cm3) 50.20
Fuel Consumption At Maximum Engine Power (L/h) 1.54
Guide Bar Gauge (inch) 0,058
output (ps) 3.50
Priming Pump No
Choke w/ Automatic Fast Idle Release Yes
output (kw) 2.57
Ignition System CDI
Chain Tensioner Side
fuel tank capacity (l) 0.50
Start Assist System Decomp
Saw Chain Pitch (inch) 0.325