Stihl MS 391 - Bar length 20"/50cm Stihl MS 251 - Bar length 18"/45cm

Stihl MS 271 - Bar length 18"/45cm

Description

Durable, high performing farm saw.

Great mid-range option for the demanding farmer, gardener or landscaper. Versatile, durable 2.6kW petrol chainsaw with economical 2-MIX engine cuts fuel consumption by up to 20% and emissions by up to 50% compared to conventional two-stroke engines. Features STIHL's long-life air filter system with pre-separation and professional anti-vibration technology.

Technical data

Technical data	Value
Displacement cm³	50.2
Power output kW/bhp	2.6/3.5
Weight kg ¹⁾	5.6
Power-to-weight ratio kg/kW	2.2
Sound pressure level dB(A) ²⁾	103
Sound power level dB(A) ²⁾	115
Vibration values left/right m/s² ³⁾	4.5/4.5
STIHL Oilomatic saw chain pitch/type	.325" RM
Oil pump	nicht einstellbar
Tank volume l	0.50
Chain pitch	.325"
Chain tensioning	seitliche Kettenspannung
Sprocket - number of teeth	7 Z
Filter	Langzeit Filtersystem (Vorabscheidung) / Patronenfilter
Bumper spike	Stahlkralle
Cylinder	Chrom
Oil tank volume cm3	240
Sprocket	Profilkettenrad
Anti vibration system	AV+Stahlfeder
Filler cap	WTV werkzeugloser Tankverschluss
EPA Certified fuel consumption l/h	1.418
CO2 g/kWh	826
Speed at maximum power Um	9.500
EPA Certified fuel consumption glh	0.375 Standard features Advanced combustion technology Four overflow channels swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result is lower fuel consumption and high torque across a broad rpm range. Anti-vibration system Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles. Pre-separation air filtration system STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct. Compensator This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs. Single-lever master control All important functions such as start, choke, throttle and stop are operated via a single lever. Side chain tensioner The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain. Ematic chain lubrication system The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%. Tool free filler caps Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.