With its advanced ergonomics & seriously powerful 66.8cc engine developing a huge 3.3k W, it’s no surprise this impressively well-equipped model has become Echo’s most popular professional felling saw. The engine itself incorporates a diaphragm-type carburettor, which ensures the optimum fuel/air mixture is maintained at all times for peak performance; & it employs a heavy-duty automotive-style air-filter that works to extend engine-life, & which can be quickly accessed without using tools. The fuel-capacity is a generous 0.64-litres. The Echo CS-680 Petrol Chainsaw features automatic chain-lubrication, which can be manually over-ridden, thereby enabling you to reduce oil-consumption. The amount of oil that’s delivered to the cutting-gear can be adjusted to suit the type of wood you’re working with. Despite its rock-solid build-quality & high-performance power-unit, the CS-680 weighs just 6.6kg. Its low-weight build combines with its high-specification vibration-reduction system to maximise control & manoeuvrability, & to ensure operator-fatigue is kept at bay for as long as possible. Also featured is Echo’s Performance Cutting System™, which comprises an ultra-aggressive chain & an upgraded cutter-bar.