Arthur Ibbett Ltd Approved STIHL and VIKING Dealer
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MS 391

Top of the range, high torque farmer chainsaw

Easy-to-manage, high-torque chainsaw for improved performance and user comfort when harvesting wood or sawing firewood. High torque over a wide range of speeds. Up to 20% less fuel consumption and up to 50% lower emissions compared with the previous model without 2-MIX technology.

Version Price
MS 391, Bar length 20"/50cm
£786.00 (incl. VAT)
MS 391, Bar length 18"/45cm
£774.00 (incl. VAT)
MS 391, Bar length 16"/40cm
£610.00 (incl. VAT)

Displacement cm³ 64.1
Power output kW/bhp 3.3/4.5
Power-to-weight ratio kg/kW 1.9
Weight kg 1) 6.2
Sound pressure level dB(A) 2) 105
Sound power level dB(A) 2) 117
Vibration values left/right m/s² 3) 4/4
STIHL Oilomatic saw chain pitch/type 3/8" RM
Chain brake QuickStop
Oil tank volume cm3 350
Tank volume l 0.60
  • 1) Without fuel, without bar and chain
  • 2) K-factor according to DIR 2006/42/EC = 2.5 dB (A)
  • 3) K-factor according to DIR 2006/42/EC = 2m / s ²

Standard

  • Decompression valve
    The decompression valve is part of the easy starting system. The valve should be pressed before starting to reduce the compression pressure when starting, as well as reducing the effort needed to pull the starter rope. The decompression valve is semi-automatic; it must be pressed manually before starting, but then closes automatically.
  • Advanced combustion technology
    Four overflow channels swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result is lower fuel consumption and high torque across a broad rpm range.
  • Anti-vibration system
    Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.
  • Pre-separation air filtration system
    STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct.
  • Compensator
    This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.
  • Variable-displacement oil pump
    Allows a precise, demand-based delivery of oil. It's possible to reduce oil production by up to 50% in the E position. For very long cutting attachments or very dry wood, an additional volume of oil can be added by the user. similar to illustration.
  • Single-lever master control
    All important functions such as start, choke, throttle and stop are operated via a single lever.
  • Side chain tensioner
    The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.
  • Ematic chain lubrication system
    The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.
  • Tool free filler caps
    Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.
  • Made from sturdy nylon. For safe storage and transport of all chainsaws with bar lengths up to 45cm / 18". With small additional pocket.
    £33.00  Product Details (incl. VAT)
  • Made of durable plastic. For safe storage and transport of all chainsaws with bar lengths up to 45cm / 18".
    £37.50  Product Details (incl. VAT)
  • Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.
    £31.70  Product Details (incl. VAT)
  • Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.
    £35.00  Product Details (incl. VAT)
  • Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.
    £38.00  Product Details (incl. VAT)
  • The body is made of 3 electrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability.
    £47.50  Product Details (incl. VAT)
  • The body is made of 3 electrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability.
    £50.00  Product Details (incl. VAT)
  • Includes file holder with round file, flat file and file gauge in a sturdy case.
    £22.00  Product Details (incl. VAT)
  • Practical tool for quickly sharpening the teeth and depth gauge in a single action, significantly reducing chain maintenance time. The sturdy frame allows for a smooth filing action with highly accurate results. All the files are easily replaceable. For 1/4" P, 3/8" P, .325", 3/8" and .404" saw chains. Includes round and flat files.
    £40.00  Product Details (incl. VAT)
  • The body is made of 3 electrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability.
    £53.00  Product Details (incl. VAT)
These products can be reserved online with no obligation and picked up at our store. Here we offer you personal advice and professional service. Since your safety is of particular importance for us, we provide you with extensive personal instruction for a safe handling.
These products can be purchased online and picked up at our store. Here we offer you personal advice and professional service. Since your safety is of particular importance for us, we provide you with extensive personal instruction for a safe handling.