Description

The STIHL MS 391 Petrol Chainsaw is a superior, high-torque tool designed for heavy agricultural use. Whether it’s harvesting wood or sawing firewood, this chainsaw offers enhanced performance and user comfort. It delivers high torque across a broad range of speeds and impresses with its fuel efficiency and emission reduction. The model has shown up to 20% less fuel consumption and up to 50% fewer emissions compared to previous models without 2-MIX technology.

This chainsaw features advanced combustion technology, wherein four overflow channels swirl the fuel-air mix before ignition for optimal combustion and efficient performance. This innovative technology results in lower fuel consumption and high torque across a broad RPM range. Additionally, STIHL has developed a state-of-the-art anti-vibration system to dampen the machine’s engine oscillations, significantly reducing vibrations at the handles. This leads to a more comfortable and safer user experience, particularly during prolonged use.

The MS 391 chainsaw includes a compensator in the carburettor to prevent the fuel-air mixture from getting richer as the air filter becomes clogged. This feature ensures the correct quantity of fuel is delivered to the carburettor based on the amount of air passing through the air filter, keeping the fuel/air ratio in the combustion mixture constant and the engine power steady. The chainsaw also boasts a variable-displacement oil pump for precise, demand-based delivery of oil, and an Ematic chain lubrication system that ensures pinpoint lubrication of the saw chain links and guide bar rails.

Key Features:

• High-torque engine for improved performance across a wide range of speeds.
• Advanced combustion technology that enhances efficiency and lowers fuel consumption.
• Anti-vibration system for reduced vibrations and improved user comfort.
• Compensator in the carburettor maintains the fuel/air ratio, enhancing engine power.
• Variable-displacement oil pump for a precise, demand-based delivery of oil.
• Ematic chain lubrication system for optimal lubrication, reducing oil consumption.
• Single-lever master control for easy operation of all essential functions.
• Side chain tensioner for user safety.
• Decompression valve as part of the easy starting system.
• Tool-free filler caps for easy refuelling.
• Available in two versions: MS 391 – 45 cm / 18″ and MS 391 – 50 cm / 20″.
• Long-life pre-separation air filtration system for longer filter life.