MS 171

MS 171
A lightweight, fuel-efficient chainsaw with reduced-emission engine technology.

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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  • 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.
  • Translucent Fuel Tank
    Allows operator to easily check fuel level before starting work.
  • 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.


31.8 cc (1.94 cu. in.)
1.3 kW (1.7 bhp)
4.3 kg (9.5 lbs.)
280 cc (9.5 oz.)
180 cc (6.1 oz.)
3/8" PMM3
GUIDE BAR LENGTHS* (Recommended ranges)
30 to 40 cm (12" to 16")
STIHL recommends #3610 (61 PMM3 55) OILOMATIC® saw chain and 16" 3005 000 3913 Ematic™ guide bar combination. The actual listed guide bar length can vary from the effective cutting length depending upon which powerhead it is installed.

Important Information

* 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 171 is rated 4.4 out of 5 by 99.
Rated 5 out of 5 by from Best saw for the money!! This is the best saw for the money. I couldn't be happier with it.
Date published: 2017-03-22
Rated 4 out of 5 by from Starts great and runs great It works well everytime i use it. It doesnt ever have a problem starting. I use my ms171 for wood carvings. It cuts well and is very light and maneuverable. I have the 16 inch bar on my saw. Do to the power of the saw i would recommend getting the 14" bar. Overall has been a great saw.
Date published: 2017-03-15
Rated 4 out of 5 by from This is a great little saw. Well worth what it cost Saw is easy to start hot or cold. Runs very well. Great on wood 12 in or smaller diameter. Could use more power on anything bigger than 12 in. Great value for $$. I would buy this saw again in a minute
Date published: 2017-03-09
Rated 5 out of 5 by from Ms171 Good little saw. Used it all day no problems. Starts real easy and has plenty of power for its size. Real glad I made this decision to buy this saw. I put 0.50 bar and chain on it and makes a big difference in how it cuts too. Happy trimming.
Date published: 2017-02-13
Rated 4 out of 5 by from tough little saw that hits its niche well We were clearing nearly an acre of forest that was far too close to the house. I bought this as my first chainsaw, since my brothers-in-law were doing the main clearing work with their massive saws, but I needed to clean up debris and cut up the wood (that wasn't going to the mill as logs) for firewood.This little saw "saw" far more use than I'd have thought when I bought it. I've also used it to tackle some firewood rounds that were about 20" in diameter (yeah, it's not best suited for that and tends to bog down, but eventually it chewed through). In hindsight, a larger saw would've been nice, but I'll not regret purchasing the 171. For delimbing the trees after they are felled, this thing is perfect. It's so lightweight that you don't get tired from holding the saw at the weird angles you need for delimbing. I also found it perfect for chewing through the dense underbrush that had grown up around the house. I used it to take down some small 6-8" diameter trees with no problem, and it works well for firewood rounds 14" and smaller.
Date published: 2017-02-06
Rated 5 out of 5 by from Good product Great motor and handling but the chain that comes with it isn't worth the metal it's made of. Cut half a cord of wood so far and blade is full. I guess that is normal I was just hoping it would last longer before it needed attention.
Date published: 2017-01-27
Rated 5 out of 5 by from Love this saw I use this saw at work . Had to buy one for home. Great saw for the money.
Date published: 2017-01-27
Rated 5 out of 5 by from Easy starting; runs great! This saw starts very easily, normally on first pull (after initial cold start - and even the cold start is easier than previous saws I have used). My previous saw (not Stihl) started good cold, but was a real pain to start after it was hot and had been left a few minutes.Highly recommend this saw to anyone that wants to "saw" as opposed to "crank".
Date published: 2017-01-26
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Standard Features

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

You Will Also Need

For Your Safety


Chainsaw Safety and Maintenance - Video
Product Instruction Manual (PDF)
Product Safety Manual (PDF)
STIHL Limited Warranty
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