MS 661 C-M MAGNUM® ChainsawSuited for use with long guide bars, this fuel efficient chainsaw was designed for the demanding professional. When professionals need to fell large trees, in large quantities, they reach for the saw they know has the power to get the job done the MS 661 C M. Featuring an impressive power to weight ratio and STIHL M Tronic engine management technology, the MS 661 C M chainsaw also delivers less vibration and 20% greater fuel efficiency than the