Direct product selection: Petrol chainsaws for property maintenance

MS 251

MS 251 petrol-driven chainsaw: robust and versatile for use in forests

General

Great for harvesting firewood in the forest. Side-mounted chain tensioning, rugged and durable .325" cutting attachment, optionally available with 40 cm bar length for cutting thicker tree trunks, economical 2-MIX engine.

Versions



Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Product versions

  • MS 251 C-BE MS 251 C-BE petrol-driven chainsaw: robust and comfortable for cutting firewood

Technical specifications

MS 251

Technical specifications

Technical specifications Value
Displacement 45,6 cm³
Power output 2,2/3 kW/PS
Weight 1) 4,8 kg
Power-to-weight ratio 2,2 kg/kW
Sound pressure level 2) 103 dB(A)
Sound power level 3) 114 dB(A)
Vibration level left/right 4) 3,9/3,9 m/s²
Saw chain pitch .325"
STIHL Oilomatic saw chain type Rapid Micro 3 (RM3)

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 = 2.5 dB (A)
4) K-factor according to DIR 2006/42/EC = 2m / s ²

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Features

MS 251

Standard equipment

  • STIHL 2-MIX ENGINE Zoom
    STIHL 2-MIX ENGINE

    HIGHLY POWER-EFFICIENT. With the STIHL 2-MIX engine, you can reduce exhaust emissions and fuel consumption, and therefore operating costs. This 2-stroke engine is low-maintenance and uses fuel efficiently even at high power levels. Use a mixture of petrol and engine oil as fuel. The STIHL 2-MIX engine complies with the strict EU Stage V emissions directive.

  • CARBURETTOR PRE-HEATING Zoom
    CARBURETTOR PRE-HEATING

    FOR RELIABLE OPERATION EVEN IN WINTER. Thanks to carburettor preheating, you can work reliably with your chainsaw even in winter. You can change the operation from summer to winter mode in just one simple step. In the winter setting, pre-heated intake air flows around the carburettor, preventing it from icing up.

  • SIDE-MOUNTED CHAIN TENSIONING Zoom
    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.

  • LONG-LIFE AIR FILTER SYSTEM FOR CHAINSAWS Zoom
    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.

  • COMPENSATOR Zoom
    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.

  • STIHL ANTI-VIBRATION SYSTEM Zoom
    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.

  • STIHL Ematic System Zoom
    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 Zoom
    Single-lever master control

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

  • Tool free fuel caps Zoom
    Tool free fuel caps

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

Retrofitted equipment

  • STIHL ElastoStart Zoom
    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 with air routing Zoom
    Long-life air filter system with air routing

    Compared with conventional air filter systems, the service life of the filter is significantly increased.

  • HD2-FILTER Zoom
    HD2-FILTER

    INCREASES SERVICE LIFE. The HD2 filter protects your power tool’s engine against even the finest dust, ensuring a longer service life and reduced wear. The filter made from PET material has up to 70% finer pores than fleece and polyamide filters, and is also oil- and water-repellent. This also makes it easier to clean the filter. When needed, the filter cartridge can be easily replaced without tools.

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Accessories

MS 251

Accessories

    • Combination socket tool Zoom
      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

    • Chainsaw bag Zoom
      Chainsaw bag

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

    Versions

    • Combination socket tool, width across flats 19–16 Zoom
      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

    • Chainsaw case Zoom
      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

    • Multi-function tool Zoom
      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

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

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

    Versions

    • Laser 2-in-1 Zoom
      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

    • STIHL Smart Connector Zoom
      STIHL Smart Connector

      The STIHL Smart Connector forms the basis for using all STIHL connected functions. These functions can be used via both the STIHL connected App and the STIHL connect Portal. Once correctly attached to a STIHL power tool or another manufacturer’s power tool, the STIHL Smart Connector records operational hours while the machine is running, stores them and transmits them to your smartphone via Bluetooth as soon as it is within range. The data received in the STIHL connected App is transferred to the STIHL Cloud when there is an internet connection. The data is stored there in compliance with data protection regulations. The STIHL connected App and STIHL connected Portal allow you to access your power tool data at any time. STIHL connected opens up new avenues for professional users to obtain a convenient and transparent overview of their own power tool fleet. At the same time, STIHL connected provides information including operational hours, power tool status including reminders of overdue maintenance, the last known location, and whether or not the power tools are currently nearby. For professional users, this means improved digital fleet management, more efficient processes within companies, and even closer contact with STIHL dealers. Private users can also use the system to keep an eye on their power tools and carry out maintenance at the right time.

    Technical specifications Value
    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
    Weight 20 g

    Versions

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Documents

Owners manuals and safety brochures

Languages Date Link
manual icon de / fr / it 27.02.2023