Stihl MS 231 Chainsaw

STIHL MS 231: The High-Torque Mid-Range Firewood & Estate Saw

The STIHL MS 231 is an industrial-grade mid-range petrol chainsaw engineered specifically for landowners, farmers, and homeowners who need to tackle heavy firewood preparation, storm clearing, and timber felling without step-up professional machinery weight. Powered by an advanced 42.6 cc STIHL 2-MIX engine generating 2.0 kW (2.7 hp), it delivers exceptional lugging torque while reducing fuel consumption by up to 20% and exhaust emissions by 70% compared to standard two-stroke engines. Built with an optimized power-to-weight ratio (4.8 kg bare weight), it integrates an advanced long-life air filtration system with pre-separation to prevent sawdust from choking the motor. Whether navigating light forestry or seasonal estate maintenance, the MS 231 offers maximum cutting speed, reduced user fatigue, and long-term mechanical reliability.

Key Performance & Mechanical Features

• 42.6 cc STIHL 2-MIX Powerhead: Delivers high cutting torque across a broad RPM range while meeting strict emission standards, ensuring clean combustion and lower fuel costs.

• Long-Life Pre-Separation Air Filtration: Swirls incoming intake air to eject heavy dust particles before they hit the main filter, dramatically extending service intervals between cleanings.

• Carburettor Compensator Module: Automatically adjusts fuel metering when the air filter begins to clog, maintaining a constant fuel-to-air ratio, peak engine output, and consistent cutting torque.

• Low-Vibration Cell Architecture: Advanced spring and buffer elements isolate the engine and chain oscillations from the front and rear handles ($3.9 \text{ m/s}^2$), preventing hand fatigue during extended cutting sessions.

• Ematic™ Oil-Saving Chain Lubrication: Directs bar oil straight to the chain rivets, reducing guide bar friction and lowering chain lubricant consumption by up to 50%.

• Single-Lever Master Control: Combines choke, throttle start, operating speed, and engine stop controls into one intuitive, single-handed lever position.

• Protected Side-Access Chain Tensioning: Allows safe and easy adjustment of the chain tension through the sprocket cover, avoiding direct contact with the sharp saw chain.

• Tool-Free Bayonet Tank Caps: High-durability fuel and oil caps lock open and closed quickly without tools, preventing fuel spillage during field top-ups.