Oils & Lubricants MS 391 Specifications – Mid-Range Use DISPLACEMENT 64.1 cc (3.9 cu. in.) OILOMATIC® CHAIN 3/8″ RS3 GUIDE BAR LENGTHS (Recommended ranges) 40 to 50 cm (16″ to 20″) STIHL ROLLOMATIC® POWER SOURCE Gas Click to see full answer. Also to know is, what CC is a Stihl ms391?The Stihl MS 391 will quickly earn its place in your tool shed. 64.1 cc (3.9 cu. in.) 6.2 kg (13.67 Ibs.)Similarly, is the Stihl MS 391 a good saw? The STIHL MS 391 is the ultimate farm saw. The STIHL 2-MIX engine reduces fuel consumption by 20% and emissions by 50% on previous models. Another important feature is the new air filter system which drastically reduces the intake of sawdust for cooling the engine and means maintenance needed is also reduced. Similarly one may ask, how many cc is a Stihl MS 362? 59.0 cc How much is a Stihl MS 391? Starting at $589.95 with a 18″ bar and chain. STIHL engine technology means low fuel consumption, longer run times and reduced emissions in this high-powered chain saw. The MS 391 features our newest engine technology that adds fuel efficiency while reducing emissions as compared to other models.