Description Another high-tech STIHL chainsaw, the MS 291 is built around one of our new fuel-saving engines with longer run times and lower emissions. And with an advanced pre-separation air filtration system, your air filter can last up to five times longer. Another great feature is an advanced anti-vibration system to reduce user fatigue. STIHL engineering is to thank for this high-powered, high-tech, low-maintenance chainsaw. It is truly a force to be reckoned with.PRODUCT DETAILS:The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw Tool-less fuel and oil caps with retainers Pre-separation air filtration system 2.8 kW engine power Anti-vibration systemAnti-Vibration HandleL Yes Assembled Weight (lbs): 12.3 Automatic Oiler: Yes Bar Length (in): 18Cut Diameter (in): 18