73.5cm³ heavy duty professional chain saw. Fitted standard with 20″ (50cm) guide bar^. The ECHO CS-7310SX brings true power and manoeuvrability to the professional. The powerful 73.5cm³ 2-stroke engine generates massive torque and provides exceptional cutting performance for heavy duty felling. Weighing just 6.8kg with ergonomic and robust construction it is ideal for the most challenging professional jobs. Magnesium plates mean the body is extremely tough and resilient. The CS-7310SX has been designed from the ground up for professional forestry use. Each component and every feature has been specifically designed to create a tool you can depend on, day in, day out. The newly developed G-force engine air pre-cleaner massively reduces the need for maintenance by keeping the internal components free from dust and debris. Rotating plastic chain catcher. Side access chain tensioner for easy chain adjustment. Flip lever caps for easy refilling. Drop prevention nuts as standard. G-FORCE air cleaner system and large air filter. Translucent fuel tank shows fuel level.