K770 The Husqvarna K770 is a powerful and versatile power cutter with many features that make it one of the best power cutters on the market. It is equipped with the SmartTension™ semi-automatic belt tensioning system, which provides optimal power transmission, minimal wear and maximum service life. Light weight, remarkable power-to-weight ratio, reliable starts and exceptionally low vibration mean increased ergonomics and productivity. Suitable for road works when used with the KV7 trolley.