La MS 251 is the successor to the popular MS 250 chainsaw. 
This medium-sized saw offers powerful performance for the toughest tasks. Equipped with a low-emission, fuel-efficient stratified scavenging engine, it features the STIHL Quickstop inertia chain brake, Master Control Lever, anti-vibration system, carburetor preheating shutter for operation in both summer and winter, tool-less fuel and oil caps with retaining screws, and an excellent power-to-weight ratio. These features make it an outstanding tool for home or small property use.

It is part of STIHL's new generation of eco-friendly and efficient chainsaws.