A high-performance, high-tech, fuel-efficient chainsaw.

Product Description

The MS 271 FARM BOSS® replaces the mighty MS 270 with a saw that’s loaded with features and technology. It starts with a highly efficient engine that delivers 20% longer run times between refuelings – while cutting exhaust emissions in half compared to the MS 270. There’s also a pre-separation air filtration system that’s so effective, your air filter can last up to five times longer (now that’s high performance). All engineered into one compact, ergonomic design.

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Model Features

  • Reduced-Emission Engine Technology - Caring for Nature
    The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

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  • Built in the USA
    Indicates products that are built in the United States from domestic and foreign parts and components.

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  • Pre-Separation Air Filtration System
    This time-saving technology boosts the efficiency of the engine’s filter system, doubling the time between air filter cleanings. Air drawn into the engine is first separated via centrifugal force, ejecting the heavier dirt particles before being routed to the air filter. This pre-separation means less dirt to be captured by the air filter, resulting in less frequent cleaning and maintenance.

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  • Anti-Vibration System
    STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
  • Side-Access Chain Tensioner
    The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.


50.2 cc (3.06 cu. in.)
2.6 kW (3.49 bhp)
5.6 kg (12.3 lbs.)
500 cc (16.9 oz.)
240 cc (8.12 oz.)
26 RM3
GUIDE BAR LENGTHS (Recommended ranges)
40 to 50 cm (16" to 20")
STIHL recommends #3634 (26 RM3 67) OILOMATIC® saw chain and 16" 3003 812 6813 Ematic™ guide bar combination. The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.

Important Information

WARNING! The occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws) and §30 of UL 1662/ ANSI Standard B175.1 (electric chainsaws). Ask your STIHL dealer about safe operating procedures and the advantages of the STIHL Quickstop® chain brake, STIHL Quickstop® Plus (Q) additional chain braking feature, STIHL reduced kickback bars and STIHL low-kickback saw chains.

STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws.

* The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.

Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…

WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.


MS 271 FARM BOSS® is rated 4.7 out of 5 by 901.
Rated 5 out of 5 by from Great Chainsaw! After the first or second time starting, it starts easily...
Date published: 2019-08-17
Rated 1 out of 5 by from Undependable Saw motor seized up while cutting first tree. Took it to retailer 3 days ago still haven’t heard anything.
Date published: 2019-08-14
Rated 5 out of 5 by from Best chainsaw I've owned At 67, I have owned several chainsaws through the years. All of which seemed to work well initially, then problems started to pop up causing consternation and delays. Reading up on Stihl products they certainly seemed to be what I needed, even though the cost was a bit more than the others. Folks I must say I wish I had made the decision to purchase a Stihl years ago! Best dang chainsaw I have ever had the pleasure to use. Their "easy start" system REALLY works! Their anti-vibration system keeps your hands from getting worn out. The saw just walks right on through everything I have cut so far including oak and hickory. Buy it!
Date published: 2019-08-14
Rated 5 out of 5 by from Never had a saw this good I always got lower end brands, slow and no end of problems. This starts fast and cuts trees like butter. I’ll be able to easily clear out the farm with this.Buy once, cry once!
Date published: 2019-08-12
Rated 4 out of 5 by from Hard to start at first I guess my biggest issue is with the manual. Other 2 stroke tools I've had are very specific about how to start the device, i.e. 4 pulls with the choke on 3 pulls with the choke on half way, etc... I tried starting this saw the way I started stihl saws I had in the past and ended up flooding the saw which then made it a nightmare to start. After working on it for 30 minutes I finally got it started. Afterwards, I was a little more careful and it seems to start pretty well now. Great power, easy to handle, cuts like it's going through butter! Would certainly recommend to others, just make sure you work with the store on learning how to start it, there is a trick!
Date published: 2019-08-12
Rated 5 out of 5 by from Great Saw This is a great saw. I have about 15 hours of use now, and everything has worked, and is still working, great. Easy start, runs as hard and as long as I have asked. The thing I look for in any tool is the ability to out work me and this saw fits that criteria.
Date published: 2019-08-11
Rated 5 out of 5 by from Great saw! I'm a beginer and upgrading from a 16" bar STIHL to this 20". 8 big pines down and sectioned with ease.
Date published: 2019-08-09
Rated 5 out of 5 by from Starts right up and has plenty of power Easy to start and cuts like a champ. I bought the 20 inch bar and had no problem cutting through a 24" diameter white pine that fell across my road. My brother has this same saw and uses it for cutting fire wood and loves it. I can say I am very pleased with this saw as well.
Date published: 2019-08-05
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Standard Features

  • Common Features for Chainsaws
    View the features common to many STIHL chainsaws.

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