The STIHL MS 251 petrol chainsaw is a top-range domestic saw and the optimum choice for property and grounds maintenance. Robust, powerful and easy to handle, it’s designed for a wide variety of applications, from cutting firewood to small-scale timber construction and felling.
Its high-torque 2-MIX engine delivers excellent cutting performance with reduced emissions (by up to 70%) and up to 20% lower fuel consumption compared to a conventional STIHL 2-stroke engine of the same power. This makes the MS 251 both economical to run and environmentally considerate, without compromising on power.
To keep you working comfortably for longer, the STIHL anti-vibration system reduces the transmission of vibrations from the engine and cutting attachment to the handles, significantly reducing strain on your arms and hands. Maintenance demands are also kept low thanks to the long-life air filter system, which combines pre-separation routing with an HD2 filter. This setup prevents coarse particles and fine dust from reaching the engine, ensuring a longer service life, reduced cleaning intervals and easier upkeep.
The compensator in the carburettor ensures consistent performance, exhaust quality and fuel consumption even as the air filter becomes dirty, meaning fewer interruptions during work. Chain adjustments are safe and simple with the side-mounted chain tensioner, and the tool-free fuel and oil caps with bayonet closure allow quick refilling.
To reduce oil consumption, the STIHL Ematic system delivers precise lubrication exactly where it’s needed. Depending on conditions, this can cut chain oil use by up to 50%, while still ensuring excellent protection of the bar and chain. Oil delivery can also be increased easily for working in dustier environments or with longer guide bars.
MS 251 Powerful Domestic Petrol Chainsaw
Owner's Manual
Find information about Set Up, Operation, Maintenance, Storage and find Product FAQ's and Owners Manual for this product here:
You can find videos showing you how to fill your machine with fuel and oil, fit bars and chains and start your chainsaw here:
Technical Specifications
Displacement 45.6 cm³ Power output 2.2/3 kW/HP CO2 819 g/kWh Weight 4.8 kg 1) Weight 5.61 / 5.71 kg 2) Power-to-weight ratio 2.2 kg/kW Bar length 40-45 cm Bar length 16-18 " Saw chain pitch .325 " Length with bumper strike 424 mm Sound pressure level 103 dB(A) 3) Sound power level 114 dB(A) 3) Vibration values left/right 3.9/3.9 m/s² 4)
1)Without fuel, without bar and chain2)Without fuel, with bar and chain3)K-factor according to DIR 2006/42/EC = 2.5 dB (A)4)K-factor according to DIR 2006/42/EC = 2m / s ²Warranty
This product is covered for a period of 2 years under STIHL domestic warranty, or 1 year under professional use.
Extend your domestic warranty from 2 to 3 years with the purchase of 5 litres of STIHL MotoMix® fuel and this product.