MS 251 - Top range saw for property maintenance
Selection Petrol Chainsaws for Cutting Firewood and Grounds Maintenance

MS 251

Top range saw for property maintenance

General

MS 251
More pictures

The new MS 251 is ideal for a variety of applications, from cutting firewood to timber construction. This high torque engine is easy to start and comfortable to use, with a high cutting performance. Emissions are cut by 70% and fuel consumption is up to 20% lower compared to a STIHL 2-stroke engine of the same power output without 2-MIX technology.

Versions

Price

* Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.

Product variations

Technical data

MS 251

Technical data

Displacement cm³ 45.6
Power output kW/bhp 2.2/3
Power-to-weight ratio kg/kW 2.2
Weight kg 1) 4.8
Sound pressure level dB(A) 2) 103
Sound power level dB(A) 2) 114
Vibration values left/right m/s² 3) 3.9/3.9
STIHL Oilomatic saw chain pitch/type .325" RM
Chain brake QuickStop
Oil tank volume cm3 200
Tank volume l 0.39

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

The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.

Features

MS 251

Standard features

  • Anti-vibration system Zoom
    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 Zoom
    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 Zoom
    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.

  • Single-lever master control Zoom
    Single-lever master control

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

  • Side chain tensioner Zoom
    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 Zoom
    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 Zoom
    Tool free filler caps

    Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.

The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.

Accessories

MS 251

Accessories

    • Rollomatic E .325 Zoom
      Rollomatic E .325" (up to 10 teeth)

      The body of made of 3 eletrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability, available with small or large bar nose.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Rollomatic E .325 Zoom
      Rollomatic E .325" (up to 10 teeth)

      The body of made of 3 eletrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability, available with small or large bar nose.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Rollomatic E .325 Zoom
      Rollomatic E .325" (up to 10 teeth)

      The body of made of 3 eletrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability, available with small or large bar nose.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Rapid Micro (RM), .325 Zoom
      Rapid Micro (RM), .325" 1.6 mm

      Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.

    Technical data
    Drive link thickness 1.6mm/.063"
    Chain pitch 8.25mm/.325"
    Required File size 4.8mm / 3/16"

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Rapid Micro (RM), .325 Zoom
      Rapid Micro (RM), .325" 1.6 mm

      Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.

    Technical data
    Drive link thickness 1.6mm/.063"
    Chain pitch 8.25mm/.325"
    Required File size 4.8mm / 3/16"

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Rapid Micro (RM), .325 Zoom
      Rapid Micro (RM), .325" 1.6 mm

      Good all-round comfort chain with low vibration levels, smooth cutting behaviour and low chatter.

    Technical data
    Drive link thickness 1.6mm/.063"
    Chain pitch 8.25mm/.325"
    Required File size 4.8mm / 3/16"

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Filing kit Zoom
      Filing kit

      Includes file holder with round file, flat file and file gauge in a sturdy case.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • 2-in-1 EasyFile Zoom
      2-in-1 EasyFile

      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.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Carry bag for chainsaws Zoom
      Carry bag for chainsaws

      Made from sturdy nylon. For safe storage and transport of all chainsaws with bar lengths up to 45cm / 18". With small additional pocket.

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

    • Chainsaw case Zoom
      Chainsaw case

      Made of durable plastic. For safe storage and transport of all chainsaws with bar lengths up to 45cm / 18".

    Versions

    Price

    * Manufacturer's recommended retail price updated as of February 2018 The manufacturer's recommended retail prices are subject to change without notice.

The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.

Documents

Owners manuals and safety brochures

STIHL MS 231, 251 (GB) Download PDF, 2.5 MB

Notes:

  • STIHL and VIKING online owner’s manuals are usually for the latest versions of the machine. Your product may be a slightly older production model but the manual will still be appropriate for the relevant model number.
  • The languages ​​contained in the document are also displayed in brackets, for example (GB) = English.

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