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MS 251

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

This sturdy, compact chainsaw boasts up to 20% less fuel consumption and 70% fewer emissions compared to similar STIHL two-stroke models without 2-MIX technology. Its easy-to-guide handling makes it ideal for grounds keeping and firewood cutting. Convenient features include side-mounted chain tensioning, a long-life air filter, and tool-free fuel caps for safe, easy refueling. Powered by an environmentally-friendly, economical 2-MIX engine, this chainsaw delivers performance with efficiency.

Product RRP
MS 251, .325", Guide bar L04, 45cm/18"
$899.00 (incl. GST)

Bar length cm 45
Bar length in 18
Displacement cm³ 46
Displacement cu-in 3
Engine power kW 2.2
Engine power bhp 3
Weight kg 1) 4.8
Power-to-weight ratio kg/kW 2.2
System Weight kg 2) 5.7
Sound pressure level dB(A) 3) 103
Sound power level dB(A) 3) 114
Vibration level left/right m/s² 4) 3.9/3.9
Saw chain pitch .325 "
  • 1) Without fuel, without bar and chain
  • 2) Unbetankt, mit Führungsschiene und Sägekette
  • 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

Standard

  • 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.
  • 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.
  • STIHL ANTI-VIBRATION SYSTEM
    Intense vibration at the handles of power tools can lead to longer-term effects of blood vessels in the hands and arms. STIHL have therefore developed an effective anti-vibration system where by the oscillations from the machines engine are dampened which significantly reduces vibrations at the handles.
  • 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.
  • 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
    REDUCES OIL CONSUMPTION. The STIHL Ematic system comprises a STIHL Ematic or Ematic S guide bar, a STIHL Oilomatic saw chain and a controlled-delivery oil pump. It ensures that the chain oil gets to where it is needed for lubrication. This allows you to reduce oil consumption by up to 50%. If you often work in dusty conditions or if you use long guide bars, you can quickly and easily increase the oil quantity at any time with the new oil pump system.
  • TOOL-FREE FUEL CAP FOR OIL AND FUEL TANKS
    QUICK AND EASY TO USE. With tool-free fuel cap, you can open and close oil and fuel tanks in just a few simple steps, thanks to a bayonet closure.
  • STIHL 2-MIX Engine
    The STIHL 2-MIX engine is both powerful and economical. Separating the exhaust emissions from the unburnt gas minimises scavenging losses, and therefore increases the power output while reducing consumption.<br /><br />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.
  • <p>STIHL FUNCTION Universal cut-protection trousers provide good protection for <strong>private forest and property owners</strong> and are suitable for occasional work such as <a href="https://www.stihl.de/de/ratgeber-projekte/arbeitstechnik-geraetepflege/kettensaege-tipps/brennholz-saegen">cutting firewood</a> or in agriculture, when using <a href="https://www.stihl.de/de/c/kettensaegen-motorsaegen-98176">STIHL chainsaws</a>. These trousers are available in <strong>regular fit</strong> in a technical fabric combination, with a lightweight and stretchy fabric in the upper area and a robust cotton-polyester blend in the leg area. The <strong>ventilation material on the rear of the thighs</strong> ensures a <strong>pleasant internal climate and high comfort</strong>. <strong>Integrated 9-layer cut-protection</strong> provides good protection when working with your chainsaw. <strong>Kidney protection</strong> keeps you warm in colder temperatures. <strong>Two side pockets, one back pocket </strong>and one <strong>ruler pocket </strong>ensure plenty of storage space. You can attach <strong>STIHL braces</strong> to the FUNCTION Universal trousers using the buttons. The trousers are easy to combine with the <a href="https://www.stihl.de/de/ap/jacke-function-universal-76582">STIHL FUNCTION Universal jacket.</a></p><p>STIHL FUNCTION Universal trousers are <strong>machine-washable at 60°C</strong>.</p><p><strong>The trousers are available as trousers and overalls.</strong></p><p>The following information applies to all FUNCTION Universal trousers:</p><ul><li>Material composition of outer material: 100% polyester (anthracite/high visibility orange), 65% polyester, 35% cotton (black)</li><li>Lining material composition: 100% polyester</li><li>Available colour: three-tone (anthracite/black/high-visibility orange)</li><li>Available sizes: XS-3XL</li><li>Cut-protection class: 1, design A</li><li>Number of layers: 9</li></ul><p>Applies to trousers (item no.: 008834215):</p><ul><li>also available in short sizes: S-6 to XL-6</li><li>also available in long sizes: M+6 to XL+6</li><li>Weight in size M: 1.25 kg</li></ul><p>Applies to <a href="https://www.stihl.de/de/ap/latzhose-function-universal-76573">overalls</a> (item no.: 008838806):</p><ul><li>also available in short sizes: S-6 to XXL-6</li><li>Weight in size M: 1.3 kg</li></ul><p>You can find more information about the individual sizes in our <a href="https://www.stihl.de/content/dam/stihl/vu/de/de/download-files/pdf-files/PSA_Koerpermasstabelle.pdf">size guide</a>.</p><p>STIHL FUNCTION Universal trousers and overalls have received the KWF Standard quality mark from Kuratorium for Waldarbeit and Forsttechnik e.V. (Forestry and forestry technology advisory board).</p>
    $225.00  Product Details Contact Us for Price and Availability
  • The complete Kit for saw chain maintenance.
    $50.00  Product Details Contact Us for Price and Availability
  • Lightweight and convenient design. Easy to drive into the wood and fix the guide bar. Includes practical belt bag.
    $62.00  Product Details Contact Us for Price and Availability
  • Large and robust design. Can be easily driven into the wood.
    $41.00  Product Details Contact Us for Price and Availability
  • <p>This practical file holder includes round and flat files to ensure an easy change of files.</p>
    $67.00  Product Details Contact Us for Price and Availability
  • <p>Practical, multifunctional quality tool in a sturdy plastic case with both a 3.5 mm (for carburetor adjustments and cleaning grooves) and 7.0 mm slotted screwdriver. Torx blade TX27 and 19-13 and 19-16 spark plug wrenches. Includes a nylon bag and belt loop.</p>
    $72.00  Product Details Contact Us for Price and Availability
  • <p>Practical, multifunctional quality tool in a sturdy plastic case with both a 3.5 mm (for carburetor adjustments and cleaning grooves) and 7.0 mm slotted screwdriver. Torx blade TX27 and 19-13 and 19-16 spark plug wrenches. Includes a nylon bag and belt loop.</p>
    $72.00  Product Details Contact Us for Price and Availability
  • Robust, light plastic case with two dividers. For saw chain and spark plug storage. Dimension: 18 x 12 x 4 cm.
    $12.00  Product Details Contact Us for Price and Availability
  • Stable lightweight wooden frame, Integrated ruler for easy measuring, Suitable for use with chain saws or hand saws, easy to use securing device keeps the wood stable, Comfortably holds wood up to a maximum length of 1.8m (71”), Holds a maximum load of 70kgs Folds flat for easy transport and storage.
    $133.00  Product Details Contact Us for Price and Availability
  • Made from cowhide. General purpose rigger gloves. Available in S, M, L, XL.
    $25.00  Product Details Contact Us for Price and Availability
  • STIHL 2 stroke Lube is a specially developed lubricant for air-cooled two stroke engines. It can be mixed with leaded or unleaded petrol. The formulation utilises a mixed additive system to ensure a minimal ash deposit formation. STIHL 2 Stroke Lube provides the following performance benefits: It contains diluent; mixes easily with fuel; controls corrosion excellently; has a minimal ring wear and piston scuffing; cleans burning, assisting in maintaining cleaner combustion chambers, ports and mufflers.
    $5.00  Product Details Contact Us for Price and Availability
  • Based on high-quality mineral oils. Reliable lubrication, no or resinification, even during prolonged downtimes.
    $42.00  Product Details Contact Us for Price and Availability
  • Multi function spray that cleans a number of tools and leaves a protective film that does not harden on the surface and thereby protects against corrosion. Rotating parts are lubricated. An essential all-roander for every workshop. 400ml spray can.
    $19.00  Product Details Contact Us for Price and Availability
  • Water based, alkaline detergent specifically for dissolving and removing organic oil residues and for cleaning air filters and housings. The detergent is biodegradable. Avoid contact with the eyes and keep out of reach of children.
    $21.00  Product Details Contact Us for Price and Availability
  • Do you question which lubricant is suitable for which cutting attachment, climate zone or type of wood? No need to puzzle over the answers with semi-synthetic STIHL chain lubricant. Our high-performance lubricant is extremely suitable for all moving saw chains.&nbsp;&nbsp; Well protected.&nbsp;&nbsp; STIHL chain lubricant effectively protects saw chains from wear. Thanks to its high temperature resistance, cutting attachments are optimally protected even from short-duration maximum thermal loads. Smoking is inhibited.&nbsp;&nbsp; Keeps on flowing.&nbsp;&nbsp; Even at temperatures down to -20° C, STIHL chain lubricant retains its outstanding flow properties. Selected additives prevent resinification of the cutting attachment and other treated parts. And you can start using the saw straight away, even after an extended idle period.
    $13.00  Product Details Contact Us for Price and Availability
  • The Smart Connector can be attached to petrol, electric, and battery 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 app, and for managing your machine fleet using the STIHL connect portal.<br /><br />Available at participating stores only.
    $46.00  Product Details Contact Us for Price and Availability
  • The STIHL moisture meter is lightweight and easily fits in your pocket. It has an easy to read screen with a wristband for safe holding. A simple on-off button and a removable sensor cover.
    $35.00  Product Details Contact Us for Price and Availability