ECHO CS-310ES Small, light, powerful and dependable. An entry level petrol chain saw built for professionals. The CS-310ES is easy to start, easy to maintain and won't let you down. Professionals depend on it. Professional engine Featuring a 34.0 cc professional grade engine, giving exceptional power to weight ratio. Compact, ergonomic design ECHO chain saws are all designed to the same professional standard, with no exceptions. Hard working, high quality with renowned Japanese build standards. Ergonomic Superbly balanced and lightweight making it ideal for a diverse range of jobs. Best Features. Power to weight ratio Super light-weight design with exceptional power. Ergonomics Designed to maximise efficiency and comfort. Easy start engine ECHO’s patented system for effortless starting. Product Details Engine displacement (cm³) 30.5 Output (kW) 1.1 Output (ps) 1.5 Dry Weight (kg) 4.0 Fuel tank capacity (l) 0.25 Chain Oil Tank Capacity (mL) 260 Fuel Consumption At Maximum Engine Power (L/h) 0.68 Priming Pump Yes Ignition System CDI Start Assist System ES-start Chain Brake Inertia Choke w/ Automatic Fast Idle Release Yes Chain Tensioner Side Saw Chain Pitch (inch) 3/8 Guide Bar Gauge (inch) 0.043, 0.050 Applicable Bar Length (cm/inch) 1 30, 35 / 12, 14 Vibration Front handle/Rear handle (m/s²) 4.1 / 6.8 Sound power level (dB(A)) 106.6 Sound pressure level (dB(A)) 98.2 CO² (g/kW・h) 2 1128 1 Not all lengths available in every country. Available bar lengths may incur differing RRPs. Please check with your local dealer. 2 This CO² measurement results from testing a (parent) engine representative of the engine type (engine family) over a fixed test cycle under laboratory conditions and does not imply or express any guarantee of the performance of a particular engine.