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The 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.

• Displacement - 45.6 cm³
  
• Power - 2.20 kW
  
• Engine power - 3 HP
  
• CO2 - 819 g/kWh
  
• Device weight without refuelling - 4.8 kg 1)
  
• Device weight without refuelling - 5.61 / 5.71 kg 2)
  
• Power-to-weight ratio - 2.20 kg/kW
  
• Bar length - 40 / 45 cm 3)
  
• Bar length - 16 / 18 in 3)
  
• Saw chain pitch - .325"
  
• Device length with bumper spike - 424 mm 1)
  
• Sound pressure level - 103 dB(A) 4)
  
• Sound power level - 113 dB(A) 4)
  
• Vibration level, left - 3.9 m/s² 5)