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A sturdy, compact chainsaw with up to 20% less fuel consumption and up to 70% fewer emissions compared to STIHL two-stroke engines of the same performance class without 2-MIX technology. Easy to guide, great handling. The ideal saw for groundskeeping. Great for cutting firewood. Side-mounted chain tensioning for safe and easy chain tensioning. Long-life air filter system for long cleaning intervals, tool-free fuel caps for safe and easy refuelling. Environmentally-friendly and economical 2-MIX engine.

  • Make: Stihl
  • Year: 2022
  • Name: MS 251
  • Condition: New
  • Warranty: N/A
Technical data Value
Displacement cc 45.6
Power output kW/bhp 2.2/3
Weight kg 1) 4.8
Power-to-weight Ratio kg/kW 2.2
Sound pressure level dB(A) 2) 103
Sound power level dB(A) 2) 114
Vibration level left/right m/s² 3) 3.9/3.9
STIHL Oilomatic saw chain pitch/type .325 "
Standard chain RAPID-MICRO
Tank volume mL 390.00

Standard features

  • Pre-separation air filtration system

    The innovative long-life air filter system greatly extends the service life of the filter. Air routing removes larger particles of dirt, meaning the actual filter has less to do. So the saw can be used for longer without having to clean the filter.

  • 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

    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

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

  • Side-mounted chain tensioning

    The tensioning screw is located on the side of the chain saw through the sprocket cover. Chain side tensioning allows the saw chain to be retensioned effortlessly, avoiding any contact with the sharp chain.

  • STIHL Ematic-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 up to 50%.

  • Tool free fuel caps

    Special caps on the fuel and oil tanks are designed for easy opening and locking without the need for tools.

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