MS 231

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  STIHL 2-MIX engine

  The two-stroke engine with STIHL 2-MIX technology saves up to 20 % of fuel and reduces emissions by up to 70 % compared to STIHL 2-stroke engines of the same performance class without 2-MIX technology.

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  Carburettor heating (V)

  By changing the chain saw from summer to winter operation, the intake air is pre-heated over the engine fins. This ensures that the carburettor does not ice up and you can continue working in freezing temperatures.

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  Side-mounted chain tensioning

  Side-mounted chain tensioning makes it easy to tension the chain safely.

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  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.

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  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.

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  STIHL anti-vibration system

  Precisely calculated buffer zones minimise the transfer of engine and saw chain vibrations to the front and rear handles. The chainsaw therefore runs noticeably smoother. This allows the user to save their strength and work longer.

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  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.

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  Single-lever master control

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

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  Tool free fuel caps

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

Retrofitted equipment

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  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.

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  HD2 filter

  This air filter keeps even the finest dust away from the engine, ensuring a particularly long service life. Thanks to its special material, the filter can easily be cleaned by washing, for example with STIHL Varioclean and warm water.

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    STIHL Smart Connector

    The Smart Connector can be attached to petrol-driven, electric, and cordless products, enabling it to deliver important information about your STIHL power tool via Bluetooth® 4.2. The Smart Connector offers entirely new functions and services, as a basis for device management both in your home garden using the STIHL connected app, and for managing your machine fleet using the STIHL connected Portal.

  Technical specifications	Value
  Weight	20 g
  Dimensions (l x b x h)	53 x 42 x 14 mm
  Signal range	ca. 10 m
  Running time per battery charge	ca. 1 Year
  Connectivity	BLE 4,2
  Battery	3V CR 2.032

  Versions

  • Smart Connector
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    Chainsaw bag

    For tidy storage and transport of chainsaws with bar lengths up to 45 cm.

  Versions

  • Carry bag for chainsaws
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    Combination socket tool

    For tensioning the chain and changing the chain, bar and spark plug. Width across flats: 19 (for MS 261 up), 19-13 (for MS 271, MS, 291, MS 311, MS 391), 19–16 (for MS 170, MS 171, MS 180, MS 181, MS 193 C, MS 211, MS 231, MS 241, MS 251), 16 and 13 ( for MS 150, MS 201, MS 201 T).

  Versions

  • Combination socket tool

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    Chainsaw case

    For storage and transport of all battery-powered and petrol chainsaws with bar lengths up to 45 cm (not suitable for electric chainsaws and petrol chainsaws MS 441 C-M, MS 461, MS 661 C-M and MS 880).

  Versions

  • Chainsaw case
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    Combination socket tool, width across flats 19–16

    For tensioning the chain and changing the chain, bar and spark plug. Suitable for MS 170, MS 171, MS 180, MS 181, MS 193 C, MS 211, MS 231, MS 241 and MS 251.

  Versions

  • Combination socket tool, width across flats 19–16
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    Multi-function tool

    Practical, multi-function quality tool in a sturdy plastic case. 3.5 mm flat-blade screwdriver for carburettor adjustment and cleaning grooves, Torx® TX 27 screwdriver, nylon pouch with belt loop. Width across flats 19-13 for MS 271, MS 291, MS 311 and MS 391, width across flats 19-16 for MS 170, MS 171, MS 180, MS 181, MS 193 C, MS 211, MS 231, MS 241 and MS 251.

  Versions

  • Multi function tool, size across flats 19 - 16
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    Laser 2-in-1

    Felling direction indicator and cutting guide in one. For cutting short pieces of wood without complicated measuring, can be used as a felling direction indicator to check the cuts and felling direction, demonstration video on DVD. Choose the holder suitable for your chain saw.

  Versions

  • Laser 2-in-1
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    Holder 1143 for STIHL Laser 2-in-1

    MS 231, MS 241, MS 251, all design variants except VW

  Versions

  • Holder 1143 for STIHL Laser 2-in-1
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