Stihl MS 391 Farm Boss Chainsaw
Key Features
- German made
- Farmboss
- 20" bar
- 3/8 pitch chain
- 64.1cc
- 3.3kW
- 6.2kg
The Stihl MS 391 Farm Boss is a real man's chainsaw! The high torque chainsaw is used for greater performance when harvesting wood and cutting firewood. 20" bar and 64.1cc sees this saw as being perfect for almost any job.
Also equipped with Stihl's 2-Mix technology reducing its fuel consumption by up to 20% and reducing emissions produced by up to 50% compared to other 2-stroke saws. With the operator being able to control the chain oil output to suit the condition and the long life air filter being fitted to this saw it really it one of Stihl's greatest pieces of work.
The MS 391 is a step up from the MS 311 providing about 5 more cc than its brother, so if you want the same honest chainsaw but just a little more grunt then the MS 391 is the chainsaw for you.
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Specifications
| Bar Size | 20" (50cm) |
|---|---|
| Displacement | 64.1cc |
| Power Output | 3.3/4.5 (kW/bhp) |
| Weight | 6.2kg |
Features
 | Stihl 2-Mix Engine The result of this is a saw which is more fuel efficient while running cleaner. This is due to the the advanced stratified charge system that increases the power of the saw at the same time as minimising consumption. Resulting in increased fuel efficiency which is better for your wallet |
|---|---|
 | Advanced Combustion Technology The application of the four overflow channels swirl the fuel-air mix before ignition, resting in optimum combustion and very efficient output. delivering high torque across a broad rpm range. |
 | Pre-separation Air Filtration System The innovative Stihl long-life air filter system removes larger particles of dirt and dust before they actually get to the filter. Meaning it has less work to do and in return can be changed fewer times, meaning longer life span and less maintenance. |
 | Anti-Vibraton System Using a chainsaw always results is significant vibration causing fatigue for the operator. Thats why Stihl's anti-vibration system is an innovative piece of technology that sets it apart from the rest. The vibration system sees the oscillations from the engine dampened reducing the handle vibration. |
 | Decompression Value The decomp valve needs to be pushed down when starting which minimises the compression pressure when you pull it over making it easier to start. The decamp value is semi-automatic meaning that it has to be manually engaged but it will automatically disengage when your saw kicks over. |
 | Compensator Is the process of the controller in the carby preventing the fuel-air mixture from getting too rich when the air filter gets blocked up. Ensuring the right amount of fuel is delivered to the carby while taking into consideration the amount of air coming through the air filter. This ensures the mixture is constant and in return results in constant engine power. |
 | Stihl Ematic-System This automatic chain lubrication system ensures that the exact right amount of oil is applied to the chain at the right point at the right time. This precise system means less oil is consumed by the saw and increase the precision of oiling and optimum lubrication. The Ematic system can reduce bar oil consumption up to 50%. |
 | Side Chain Tensioning On the side of the chainsaw, on the sprocket cover is an easily accessible screw to tighten the chain accordingly. |
 | Single-Lever Master Control The most important functions are accessible through a single lever; controlling the start, choke, throttle and stop abilities. |
 | Long-Term Air Cleaner System The long life air filter system has a service life of up to five times longer than the previous air filter system. The innovative HD2 filter is manufactured from a water and oil repellent polyethylene filter material. Consisting of up to 70% finer pores than fleece and is substantially easier to clean. Meaning more cutting can be done in between maintenance on your machine. |
 | Variable-Displacement Oil Pump This feature allows the operator to control the exact amount of chain oil they want for different conditions, allowing the reduction of oil up to 50%. |
