MS 391

• 

  STIHL ANTI-VIBRATION SYSTEM

  FOR MORE PLEASANT WORK. Vibrations can occur when you put your power tools through their paces, and these are particularly noticeable in the grip area. The buffer and spring elements of the STIHL anti-vibration system reduce the transmission of engine vibrations to the handle area and therefore to your body. The result is that your power tool is more comfortable to hold and your work is much less tiring.

• 

  MANUAL DECOMPRESSION

  EFFORTLESS START-UP. The decompression valve makes it easier to start your power tool. When starting, you can allow some of the compressed mixture to escape from the cylinder by opening the valve. This protects the start-up system and reduces the amount of force required on the starter cord.

• 

  COMPENSATOR

  REDUCED MAINTENANCE. The compensator is a control system in the carburettor, which uses pressure compensation to ensure that engine performance, exhaust gas quality and fuel consumption remain virtually constant over a long period of time, despite increasing contamination of the air filter. You do not need to clean the air filter until there is a noticeable drop in performance. This means that you can work for a long time without maintenance.

• 

  CONTROLLED-DELIVERY OIL PUMP

  OIL CONSUMPTION BASED ON NEED. The controlled-delivery oil pump reduces your chainsaw’s oil consumption by up to 50%. To use it, simply select the E position. For very long cutting attachments or very dry wood, an additional oil volume can be set by the user.

• 

  STIHL FOUR-CHANNEL TECHNOLOGY

  FOR LOWER FUEL CONSUMPTION AND HIGH PERFORMANCE. Thanks to STIHL four-channel technology, you can work with your power tool with very low fuel consumption and high performance. The four overflow channels guide the fuel-and-air mixture into the cylinder in a targeted and more compressed manner, which optimally burns the fuel and significantly increases the performance of the engine.

• 

  SIDE-MOUNTED CHAIN TENSIONING

  FOR SIMPLE AND SECURE RE-TENSIONING. Side-mounted chain tensioning allows for protected, easy and quick chain tensioning and replacement. The tensioning screw is inserted laterally through the sprocket cover.

• 

  STIHL Ematic System

  Compared to conventional bars without Ematic, the STIHL Ematic system reduces the consumption of chain lubricant by up to 50 %, depending on the type of wood and the cutting attachment used. This system comprises a STIHL Ematic or Ematic S guide bar, a STIHL Oilomatic saw chain and a variable-flow or reduced-flow oil pump. As a result, virtually every drop of chain lubricant is delivered to exactly the right spot.

• 

  Single-lever master control

  All important functions such as start, choke, throttle and stop are operated via a single lever.

• 

  Tool free fuel caps

  Special caps to open and close the tank cap quickly, easily and without tools.

Additional features

• 

  STIHL ElastoStart

  Due to compression pressure, jerky stresses occur when starting internal combustion engines. The damping element in the ElastoStart special starter grip alternately absorbs and releases force according to the compression pattern. The result is smooth, even starting.

• 

  LONG-LIFE AIR FILTER SYSTEM FOR CHAINSAWS

  EXTENDED FILTER SERVICE LIFE. Pre-separation routing removes coarse, larger particles from the airstream before they can reach the actual filter. The HD2 filter keeps even fine dust away from the engine, ensuring a long engine service life, long cleaning intervals and easy maintenance of your chainsaw. When we refer to a long-life air filter system in chainsaws, this exclusively describes models that have pre-separation routing and an HD2 filter. With this system, you benefit from a significantly longer filter service life compared to conventional air filter systems.

We present some Product Technology features in product technology .

• • 

    2-in-1 file holder

    Practical tool for quickly sharpening the teeth and depth gauge in a single step. Ideal for occasional users. For 1/4" P, 3/8" P, .325", 3/8" and .404" saw chains, integrated file tolerance compensation (only from STIHL).

  Versions

  • 2-in-1 file holder, 3/8" ø 5.2 mm
    Save and compare

• • 

    HP Super two-stroke engine oil

    STIHL HP Super 2-stroke engine oil is a semi-synthetic “low-smoke oil” that has been specially developed for all STIHL 2-stroke engines. It supports very clean and low-smoke combustion in the engine, making work more pleasant for you as a professional or private user.

    STIHL HP Super 2-stroke engine oil ensures good engine lubrication and makes it easier to start your power tool – even at low temperatures. It can be used all year round and supports a long service life for your engines. This engine oil has very good mixing properties.

    STIHL HP Super 2-stroke engine oil is available in the following sizes:

    • 100 ml for 5 litres (item no.: 07813198052)
    • 1 litre for 50 litres (item no.: 07813198053)
    • 1 litre for 50 litres as a dosing bottle (item no.: 07813198054)
    • 5 litres for 250 litres (item no.: 07813198055)
    • 10 litres for 500 litres (item no.: 07813198056)

    Further information:

    • Performance classes: JASO-FD, ISO-L-EGD
    • Mixing ratio: 1:50

  Versions

  • HP Super two-stroke oil, 1 l metering bottle
    Save and compare

• • 

    SynthPlus chain oil

    Semi synthetic high performance lubricant is made from high grade base oils (refined oils) which prevents resinification during prolonged downtimes. Outstanding protection against wear.

  Versions

  • SynthPlus chain oil, 5 l
    Save and compare

• • 

    FUNCTION chainsaw boots

    Entry level model made of high quality full grain leather, with high grip soles and breathable textile lining. Also protects against moisture, wear and abrasion. Protection according to EN 17249, protection class 1 (=^20 m/s) and EN 20345 S2.

  Technical data	Value
  Leg height	20 cm
  Weight 1)	1,9 kg
  Cut protection class	Class 1
  Size	39 - 47

  1) Approx per pair, using size 42
  

  Versions

  • FUNCTION chainsaw boots, size 43 / 9
    Save and compare