Description
Stihl MS 391 Petrol Chainsaw with 64.1 cc 2-MIX engine, 16-20″ bar options, anti-vibration design, and easy-use controls—built for power, efficiency, and durability.
Stihl MS 391 Petrol Chainsaw
The Stihl MS 391 Petrol Chainsaw blends high torque with usability so you can tackle demanding wood-cutting jobs without giving up control. Its 64.1 cc 2-MIX engine generates around 3.3 kW (4.5 hp), delivering power for heavy tasks like felling, limbing, and large firewood cutting. Despite its strength, it offers carefully designed features to improve comfort and reduce fatigue.
Power & efficiency
The 2-MIX engine technology improves fuel economy and lowers emissions compared to older models. Plus, the pre-separation air filter helps keep the engine clean by discarding larger particles before they reach the main filter. This not only protects internal parts, but also helps the chainsaw run more reliably during extended periods of use.
Comfort for long shifts
Weighing approximately 6.2 kg (without bar and chain), the MS 391 balances weight and power. Stihl includes an anti-vibration system to reduce hand and arm strain. The soft-grip handle enhances control, especially when using larger guide bars (from 16″ / 40 cm up to 20″ / 50 cm). Whether cutting timber or managing orchards, this chainsaw feels more manageable than many others in its class.
Smart operational features
The MS 391 includes tool-free filler caps for fuel and chain oil, making refuels fast and clean. Its Ematic chain lubrication system helps reduce oil use and ensures optimal chain run. A side chain tensioner lets you adjust tension safely and without disassembly. The master control lever merges choke, start, stop, and throttle lock for convenience during startup and shutdown.
Durability & low maintenance
Stihl built this saw for rugged conditions. It has a solid compensator to offset power loss as the filter starts to clog. The chain pitch/type is 3/8″ RM with Rapid Micro (RM) chain options. Sound pressure sits at around 105 dB(A), and vibration levels are about 4/4 m/s² (left/right), helping to keep user fatigue in check. Large tank volumes (fuel ~0.60 l, chain oil ~0.35 l) mean fewer stops for refuelling and oiling.
Key Features
- 64.1 cc Stihl 2-MIX engine delivering ~3.3 kW (4.5 hp)
- Lightweight build (~6.2 kg without bar & chain) with anti-vibration system
- Guide bar options from 40-50 cm (16″-20″) with 3/8″ RM chain
- Pre-separation filter to extend filter life
- Master control lever + side chain tensioner for ease of use
- Fuel and chain oil tanks with tool-free filler caps
- Ematic lubrication system for efficient chain oil usage
