MS 311 ChainsawThe advanced engine technology of this chainsaw improves fuel economy by up to 20% over previous model chainsaws for longer run times. The MS 311 is a high tech workhorse with low fuel consumption and reduced exhaust emissions. This powerful saw is ideal for large properties, farms, and ranches. It offers several comfort features, such as a side access chain tensioner, an advanced anti vibration system, and toolless fuel and oil caps with retainers.