Handy and easy-to-use MS 251 chainsaw with economical 2-MIX engine. Ideal for firewood production by the occasional user, but also for farmers, orchard growers, gardeners and planters. Equipment: side chain tensioner, durable and long-lasting cutting set, optionally available with a 40 cm guide bar for felling trees of larger diameter.
Long-life air filter system significantly extends working periods between filter cleanings. Larger and heavier particles are thrown outwards by centrifugal force, and then additionally thrown upwards by a rising ramp. Pre-cleaned air is directed to the air filter.
STIHL 2-MIX engine
STIHL two-stroke engine in 2-MIX technology provides high power, while saving fuel consumption by up to 20% compared to STIHL two-stroke engines of similar power without 2-MIX technology. Exhaust emissions drop by approx. 50%.
Anti-vibration system
Strong vibrations transmitted through the handles of mechanical devices can lead to vibration disease. For this reason, STIHL created the anti-vibration system. In mechanical devices equipped with the AV system, the handle zones significantly reduce the number of vibrations generated by the combustion engine and the working tool.
Multi-function switch
Operation of all important chainsaw functions, such as warm and cold start, work and shutdown, is carried out with a single lever. This solution provides exceptional comfort and safety of operation, because the right hand remains on the handle at all times.
Filter cleaning becomes necessary only when engine power noticeably drops. The STIHL compensator located in the carburetor ensures that despite increasing air filter contamination, engine power, harmful substance content in exhaust gases and fuel consumption remain constant for a longer time. This allows longer work without the need for maintenance procedures.
Side chain tensioner
The tensioner screw is turned with a special knob passing through the cover of the chain sprocket. This avoids hand contact with the sharp saw chain and bumper spike teeth.
STIHL Ematic System
The STIHL Ematic system consists of an Ematic guide bar, Oilomatic saw chain and an oil pump with adjustable output, or with reduced oil delivery. The special design of the guide bar and saw chain ensures that every drop of oil reaches exactly those places on the saw chain where it is most needed. This allows a reduction in chain lubricating oil consumption by up to 50%.
Practical tank cap
Special, patented fuel and oil tank caps. Tanks of mechanical devices equipped with such caps can be quickly opened and closed - without force and without any tools.
