STIHL MS 661 C-M 91 cc petrol chainsaw supplied with chain bar Large timber saw for demanding forestry use. M-Tronic guarantees optimum engine power at all times, easy starting with one position and stop lever function. High performance oil pump and adjustable flow rate for high lubricant flow, HD2 filter with high filtration capacity. Technical data Bar length: 63 - 71 cm Displacement: 91 cc Chain oil tank capacity: 400 cc Vibration value left: 6.9 m/s Vibration value right: 5.6 m/s Chain pitch: 3/8" CHOOSE FROM THE FOLLOWING CONFIGURATIONS: 1- 63 cm bar 2- 71 cm bar CZ