The STIHL MS 661 C-M is a high-performance professional chainsaw designed for demanding forestry applications, including felling large timber and processing hardwoods. Featuring a powerful 91.1 cm³ engine delivering 5.4 kW (7.3 hp) of power, this robust saw offers excellent torque and cutting speed. It comes equipped with M-Tronic™ electronic engine management for optimal performance and easy starting in all conditions. The MS 661 C-M has a low weight of 7.4 kg (16.3 lbs) without fuel, bar, and chain, providing an impressive power-to-weight ratio of 1.4 kg/kW. This model is typically supplied with a 63 cm (25 inch) guide bar and a 9.525 mm (3/8") Rapid Super (RS) saw chain, ensuring efficient and precise cutting.