Echo CS-4310SX Chainsaw The most powerful and lightest chain saw in its class. Fitted standard with an 18" (45cm) guide bar. Lightest and most powerful in its class With a 42.9 cc engine featuring spilt-crankcase construction and a twin ring piston, the CS-4310SX produces 2.3kW of power at just 4.3 kg dry weight, giving it the best power to weight ratio in its class. Features for the professional The CS-4310SX is packed with features to increase productivity and make maintenance easy Heavy duty aluminum handle with rubber grip and 3 point anti-vibration spring Momentary stop switch for quick and easy engine restart High volume air cleaner with centrifugal pre-filtration Split crankcase construction and twin ring piston Adjustable oiler Flip lever caps for easy refilling Captive drop prevention bar nuts Translucent fuel tank. Product Details. CO² (g/kW·h) 1 846 Sound power level (dB(A)) 113 Sound pressure level (dB(A)) 103.1 Vibration Front handle/Rear handle (m/s²) 3.3 / 3.1 Applicable Bar Length (cm/inch) 2 33, 35, 40, 45 / 13, 14, 16, 18 Carburettor Diaphragm Chain Brake Inertia Chain Oil Tank Capacity 270.000 Chain Tensioner Side Choke w/ Automatic Fast Idle Release Yes Dry Weight (kg) 4.3 Engine displacement (cm³) 42.9 Fuel Consumption At Maximum Engine Power (L/h) 1.24 Fuel tank capacity (l) 0.40 Guide Bar Gauge (inch) 0.058 Ignition System CDI Output (kw) 2.3 Output (ps) 3.1 Priming Pump Yes Saw Chain Pitch (inch) 0.325