Reduced emission engine technology: Minimizes exhaust emissions for a more environmentally friendly operation
Anti-vibration system: Reduces operator fatigue and enhances comfort during extended use
Decompression valve: Eases engine starting and improves reliability
Intellicarb compensating carburetor: Automatically adjusts air-fuel ratio for consistent performance
Ematic lubrication system: Provides targeted lubrication to reduce oil consumption and wear
Summarized by Shop
STIHL engine technology means low fuel consumption, longer run times, and reduced exhaust emissions in this high-powered chainsaw. The MS 391 features STIHL engine technology that adds fuel efficiency while reducing exhaust emissions, as compared to other chainsaw models. Though equal in weight, the MS 391 is more powerful than the MS 311
