STIHL MS 391 25" Gas-Powered Chainsaw delivers high-powered performance with low fuel consumption and reduced exhaust emissions, making it the for demanding tasks on the farm, ranch, or in the field. Equipped with advanced STIHL engine technology, this chainsaw an optimal power-to-weight ratio that outperforms comparable models. Whether you are felling trees, cutting firewood, or handling storm cleanup, the MS 391 is built for rugged and reliable performance. It features the IntelliCarb™ Compensating Carburetor that automatically adjusts the air/fuel ratio for consistent RPM and performance. The bumper spikes prevent pull-in and provide better control for smoother cutting, while toolless fuel and oil caps make maintenance easy without the need for tools. Its Pre-Separation Air Filtration System extends air filter life by ejecting larger dirt particles before they reach the filter. Additionally, the Anti-Vibration System reduces operator fatigue, enhancing comfort during extended use. Model Number: MS 391 25