Industry leading, lightweight professional petrol chain saw, ideal for felling. Fitted standard with 18″ (45cm) guide bar^. 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. Featuring a powerful 50.2 cc professional grade engine, giving exceptional power and performance. 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 can be used to open the caps manually.