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.
MS 251 Chainsaw
Owner's Manual
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Technical Data
Displacement cm³ 45.6 Power output kW/bhp 2.2/3 Bar length cm 40-45 Bar length " 16-18 Weight kg 1) 4.8 Weight kg 2) 5.67 / 5.88 Power-to-weight ratio kg/kW 2.2 Sound pressure level dB(A) 3) 103 Sound power level dB(A) 3) 114 Vibration values left/right m/s² 4) 3.9/3.9 STIHL Oilomatic saw chain pitch/type .325" RM STIHL Oilomatic saw chain pitch/type .325" Oil pump Not adjustable Tank volume l 0.39 Chain pitch .325" Chain tensioning Side chain tension Sprocket - number of teeth 7.7 Z Filter Long-term filter system / round cartridge filter Filter material Flocked,Nonwoven tissue Bumper spike Steel claw Cylinder Chrome Oil tank volume cm3 200 Sprocket Profile chain row,Sprocket profile Anti vibration system AV Steel Spring,AV System, steel spring Filler cap Tools,WTV tool-free tank cap EPA Certified fuel consumption l/h 1.075 CO2 g/kWh 862 Handle type Standard grip,Standard handle Exhaust Standard muffler,Standard silencer Carburettor Compensator / Limiter Caps / scavenging / Carburetor,Limiter caps / compensator / carburetor preheating / flushing reservoir Speed at maximum power rpm 10.000 EPA Certified fuel consumption glh 0.284