STIHL MS 391 20" Gas-Powered Chainsaw is a powerful, fuel-efficient chainsaw designed for tough jobs on farms, ranches, and large properties. Equipped with advanced STIHL engine technology, this chainsaw low fuel consumption, longer run times, and reduced exhaust emissions. With an anti-vibration system and an optimal power-to-weight ratio, the MS 391 delivers superior performance while minimizing user fatigue. Whether felling trees, cutting firewood, or tackling post-storm cleanup, this rugged chainsaw is built for reliability and efficiency in demanding conditions. It features an IntelliCarb™ compensating carburetor, bumper spikes, toolless fuel and oil caps with retainers, and a pre-separation air filtration system for enhanced durability and ease of maintenance. Model Number: MS 391 20