The Stihl MS 391 is a powerful chainsaw engineered for demanding farm and ranch applications. Its powerful 64.1cc engine delivers 4.4bhp while consuming less fuel and producing fewer emissions than comparable models. The MS 391 offers an optimal power-to-weight ratio at just 13.67lbs, making it perfect for felling trees, cutting firewood, and storm cleanup.

The MS391 stands out with its advanced technology and user-friendly design. The IntelliCarb Compensating Carburetor maintains consistent performance even as the air filter gets dirty. The Pre-Separation Air Filtration System extends maintenance intervals by removing larger debris before it reaches the filter. Comfort features include an effective Anti-Vibration System and convenient toolless fuel and oil caps. The MS 391 combines power, efficiency, and durability in a package that makes big cutting jobs easier and more comfortable.

Key Features

• IntelliCarb Compensating Carburetor: Automatically adjusts air/fuel ratio when the air filter becomes restricted
• Pre-Separation Air Filtration System: Doubles the time between air filter cleanings by ejecting heavier dirt particles
• Anti-Vibration System: Minimizes vibration levels for reduced operator fatigue
• Master Control Lever: Single lever operating choke, starting throttle lock, and on-off switch
• Toolless Fuel and Oil Caps with Retainers: Easy to open and refuel without tools
• Side-Access Chain Tensioner: Convenient chain adjustment with a bar wrench
• Bumper Spikes: Prevent pull-in and provide better control during cutting
• High-Tech Polymer Housings: Lightweight, impact-resistant, and corrosion-resistant
• Throttle Trigger Lockout: Safety feature that must be depressed before trigger activation

Specifications

• Intended Use: Farm/Ranch
• Power Source: Gas
• Powerhead Weight: 13.67lbs
• Guide Bar Length: 25in
• Chain: 3/8in pitch, 0.050 gauge (33 RS 84)
• Displacement: 64.1cc
• Engine Power: 4.4bhp
• Fuel Capacity: 20.3oz
• Chain Oil Capacity: 11.8oz