The STIHL MS 271 Farm Boss is a 50.2 cc (3.06 cu. in.) gasoline-powered chainsaw designed for farm and ranch use, delivering 3.5 brake horsepower () at a weight of 12.3 lbs (powerhead). It features a 2-stroke engine, 16.9 oz fuel capacity, 0.325" chain pitch, and generally runs 16 to 20-inch bars. Key features include anti-vibration technology, side-access chain tensioner, and a pre-separation air filtration system
 
Key Technical Specifications
Fuel Capacity: 500 cc (16.9 oz)
Chain Oil Capacity: 240 cc (8.12 oz)
Oilomatic® Chain: .325" RM3
Recommended Bar Lengths: 16" to 20"
Sound Pressure Level: 103 dB(A
Engine Displacement: 50.2 cc (3.06 cu. in.)
Engine Power: 2.6 kW (3.5 bhp)
Weight (Powerhead): 5.6 kg ()
Common Features
STIHL 2-MIX Engine: Designed for higher torque across a wide RPM range, lower emissions, and increased fuel efficiency.
Pre-Separation Air Filter: Enhances engine life by removing larger debris before it reaches the filter.
Side-Access Chain Tensioner: Allows for easier, safer chain adjustment.
Anti-Vibration System: Reduces operator fatigue