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|Bar Length||18 inch|
|Power-to-weight ratio||2.2/3.0 kW/hp|
|STIHL Oilomatic saw chain type||RM3|
|Lightweight guide bar||Retrofittable (accessory)|
|Side-mounted chain tensioning||Fitted as standard|
|STIHL Quick Chain Tensioning (B)||Retrofittable (accessory)|
|STIHL ElastoStart||Retrofittable (accessory)|
|Long-life air filter system||Fitted as standard|
|Tool-free tank cap||Fitted as standard|
|STIHL engine technology||2-MIX|
|Engine Type||Two Stroke|
The new 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.
|Power output (kW/bhp)||2.2/3|
|Power-to-weight ratio (kg/kW)||2.2|
|Weight kg 1)||4.8|
|Sound pressure level dB(A) 2)||103|
|Sound power level dB(A) 2)||114|
|Vibration values left/right m/s² 3)||3.9/3.9|
|STIHL Oilomatic saw chain pitch/type||.325" RM|
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 = 2m / s²
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