This lightweight, fuel-efficient chainsaw features reduced engine exhaust emission technology.

The STIHL MS 171 is part of the lightweight generation of STIHL chainsaws. With reduced exhaust emission technology, this chainsaw offers you a significant benefit—it saves fuel even as it cuts exhaust emissions. The MS 171 chainsaw also features the STIHL pre-separation air filter, which can extend filter life up to five times over previous models.