MS 271 FARM BOSS®


18 in. Bar

20 in. Bar

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

Bringing reduced-emission technology to mid-range chainsaws, the STIHL MS 271 FARM BOSS® is ideal for felling, firewood cutting and storm cleanup tasks. An improved low-emission, fuel-efficient engine cuts emissions by 50% when compared to previous models and delivers 20% longer run times than traditional 2-stroke engines. Designed with user comfort in mind, its compact, ergonomic design and advan...Read More
Print Spec Sheets
MS 271 FARM BOSS® Specifications
DISPLACEMENT 50.2 cc (3.06 cu. in.)
ENGINE POWER 2.6 kW (3.49 bhp)
POWERHEAD WEIGHT 5.6 kg (12.3 lbs.)
FUEL CAPACITY 500 cc (16.9 oz.)
CHAIN OIL CAPACITY 240 cc (8.12 oz.)
OILOMATIC® CHAIN 26 RM3
GUIDE BAR LENGTHS* (Recommended ranges) 40 to 50 cm (16" to 20")
STIHL ROLLOMATIC®
POWER SOURCE Gas
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 depending upon which powerhead it is installed.
Model Features
  • Zoom
    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.

    More Information

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

    More Information

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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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  • Zoom
    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.
  • Zoom
    Toolless fuel and oil caps with retainers
    Simply lift the lever and twist the caps to remove or tighten. There‘s no need to use a tool to tighten or loosen.
  • Zoom
    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.
Standard Features
  • Zoom
    Common Features for Chainsaws
    View the features common to many STIHL chainsaws.

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.
Click to view the STIHL Limited Warranty Time Periods
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    Bar and Chain Oil
    STIHL Bar and Chain oil is formulated to adhere to the bar and chain, and to reduce wear. Special agents in the oil formulation help keep sap and pitch from clinging to the bar and chain.

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    Complete Filing Kits
    Kits available for the following chain types: STIHL PICCO Mini; 1/4" pitch chain; .325" pitch chain; 3/8" pitch chain; .404" pitch chain.
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    Chain Pitch File Diameter File Guide
    Part Number
    Sharpening Kit
    Part Number
    in. mm in. mm Part Number
    3/8 PMN 9.32 5/32 4.0 0811 411 8073

    5605 750 4327

    5605 007 1026

    1/4
    3/8 PM
    6.35
    9.32
    5/32 4.0 0811 411 8091

    5605 750 4327

    5605 007 1027

    0.325 8.25 3/16 4.8 0811 412 8088

    5605 750 4328

    5605 007 1028

    3/8 9.32 13/64 5.2 0814 243 3384 5605 750 4329

    5605 007 1029

    0.404 10.26 7/32 5.5 0811 412 8108 5605 750 4330

    5605 007 1030

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    Exclusive deerhide leather provides fantastic wear properties and excellent sense of touch and feel. Naturally soft leather provides all-day working comfort. Sizes available S, M, L, XL.
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    Woodcutter Chaps
    Apron Chaps from STIHL are made from rugged, 400-denier nylon and feature the same UL® classified protection as our other chaps. Just snap them over your pants and you’re ready to go. Sewn into the legs of the chaps are six layers of Avertic® Pro by Engtex®, a cut-retardant material designed to clog the sprocket and stop the saw chain on a gasoline-powered chainsaw in case of accidental contact with the rotating saw chain. The open back design of these chaps makes them a great choice for hot working conditions.
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    Forestry Helmet System
    Adjustable hearing protection. Epoxy-coated full face screen. Tough ABS hard hat meets ANSI Z89.1-2003 Type 1 Class G. All parts are replaceable.

Are you ready for a STIHL?

MS 271 FARM BOSS® is rated 4.7 out of 5 by 383.
Rated 5 out of 5 by from If needed to, I'd buy again. But I won't. This saw is far and away the easiest and most dependable chainsaw I've ever owned. At the moment I own one electric, one cordless and three gas saws, the newly purchased Stihl the only Stihl. The smaller non-gas saws are greatest for limbing, and cutting limbs into usable firewood (less carbon footprint). However, the Stihl is the best at leveling stumps so they can be ground down and to cut timber into usable pieces. I only wish I'd purchased this Stihl long ago!
Date published: 2017-03-24
Rated 5 out of 5 by from Excellent saw After the February 28 tornado, I purchased my ms271 with a 20 in bar. No problems starting or cutting. 3 days straight 8 hours a day cutting trees. Used motomix and wood cutterbar oil.Never a miss fire, used less than 1/2 gallon fuel.
Date published: 2017-03-22
Rated 5 out of 5 by from My 3rd Stihl and this one is the best.!!!! We live on a small farm in Rochester NY. We have many storms and this saw has saved my life already. It's power is amazing compared to the older saw's I ran ms059 and ms 170. It is easy to start for us elder guys and has less vibration. I just love this saw. Thank you Danny's small engine and repair.
Date published: 2017-03-21
Rated 5 out of 5 by from Awesome saw! Been using this saw for 3 straight weekends now, and have many more to go. This thing starts with 1 - 2 pulls every time & just chews through trees. It does get a bit heavy after about an hour or so, but I'm not complaining. What saw wouldn't? Only recommendation I have (and you should be doing this anyway) is check the bar nuts fairly frequently. I lost one on my 3rd run. Luckily I have 2 extras.
Date published: 2017-03-21
Rated 5 out of 5 by from Loving it so far This is the 2nd Stihl I have owned. I received the MS250 as a donation (one of more than 75 Stihl saws bought with local donations) to help clean up the more than 2 million cubic yards of debris following the January twin storms/tornadoes in Albany, Georgia.. After volunteering for about 3 days a week for a month, and chainsawing for 8-10 hour days, that saw was getting ragged out, and I needed a larger saw to go through some the bigger trees I was running into. I traded in the 250 and bought this from MS271 Lee Power Equipment in Leesburgh Georgia, who helped me with the price and a replacement chain (highly recommend them!). Since I got this, I can say that it starts up very easy, and is handling the larger trees like a dream. The 20 inch bar is perfect for this saw. Its very well balanced, and makes my volunteer work go easier.
Date published: 2017-03-20
Rated 5 out of 5 by from Solid product Solid product, great customer service from American Chainsaw in Tucker Ga. Used it to take down some Leland cypress and various other middle sized tasks. Will continue to buy Stihl.
Date published: 2017-03-19
Rated 5 out of 5 by from Great performance. We are very pleased with this chainsaw. Has cut firewood every week since purchased. We will definitely buy this brand again.it gets the job done.
Date published: 2017-03-17
Rated 5 out of 5 by from Storm killed giants We had a large 36 inch diameter red oak come down during a severe ice storm. Knowing my smaller brand x saw would not handle this tree I purchased the 271 farm boss with 20 inch bar. Extremely impressed with the power and speed this saw displayed in cutting this tree. The only issue that I found was when I decided to rip cut slabs from the trunk the chips clogged the discharge chute because it was ripping this hardwood so quickly. Slowing my cutting solved this issue.
Date published: 2017-03-16
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