MS 251 WOOD BOSS® - $329.95 DSRP

Distributor Suggested Retail Price
18 in. Bar

DSRP: $329.95


Reserve with STIHL Express for In-Store Pick Up

A powerful and fuel-efficient chainsaw that’s comfortable to use.

The STIHL MS 251 WOOD BOSS® Chainsaw is powerful, fuel-efficient and easy to use. Ergonomically designed to bring you maximum comfort during use, this tool produces 50 percent less emissions (as compared to previous models) for a smaller impact on the environment. The MS 251 WOOD BOSS® packs features like a Master Control Lever™ and easy-to-refill fuel and oil tanks, so you can worry less about st...Read More
Print Spec Sheets
MS 251 WOOD BOSS® Specifications
DISPLACEMENT 45.6 cc (2.78 cu. in.)
ENGINE POWER 2.2 kW (3.0 bhp)
POWERHEAD WEIGHT 4.9 kg (10.8 lbs.)
FUEL CAPACITY 390 cc (13.2 oz.)
CHAIN OIL CAPACITY 198 cc (6.7 oz.)
GUIDE BAR LENGTHS (Recommended ranges) 40 to 45 cm (16" to 18")
STIHL recommends #3634 (26 RM3 68) OILOMATIC® saw chain and 18" 3005 008 4717 STIHL ROLLOMATIC® E guide bar combination. The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.
Model Features
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    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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    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

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    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
    Master Control Lever™
    The Master Control Lever™ is an easy to use single lever, operating the choke, starting throttle lock and on-off switch. The operator must pull the throttle trigger before moving the Master Control Lever™ to the choke position.
Standard Features
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    Common Features for Chainsaws
    View the features common to many STIHL chainsaws.

Important Information
* The actual listed guide bar length can vary from the effective cutting length based on which powerhead it is installed on.
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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    Chain Pitch File Diameter File Guide
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    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

    3/8 PM
    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

For Your Safety
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Are You Ready for a STIHL?

MS 251 WOOD BOSS® is rated 4.4 out of 5 by 307.
Rated 5 out of 5 by from Powerfull enough, easy to start, wish it had adjustable oiling. Purchased the MS251 for maintenance at home and fence row cleanup around the farm. Power wise, you can't push it too hard or it will stall when cutting through big trees. I would prefer just a little more oiling output as the chain appears to get hot if pushed. Probably an EPA concern. I didn't want to purchase an expensive and heavy "Pro" saw for occasional use just to get adjustable oiling. But it will get the job done.
Date published: 2018-03-15
Rated 5 out of 5 by from Best chainsaw I have ever owned Plenty of power. Starts without any issues. Very easy to adjust chain. Chain still very sharp after hours of use
Date published: 2018-03-15
Rated 5 out of 5 by from Everything I want. All I need. This 251 18” is a great all around saw. Power, weight, length, it gets the job done. I looked at the more powerful Stihl lineup, but I stayed true to what I needed in a saw. Price didn’t sway me one way or another. I could have went with a larger saw but was it more than I needed? Was it heavier than I needed? Was the power more than I needed? The 251 was the combination of all of those questions and I am glad I chose the 251 Wood Boss. Do your research, purchase the saw that fits your needs, and you will never buy another brand ever again. This is my fourth Sthil product and I am never buying any other brand after owning them!!
Date published: 2018-03-15
Rated 5 out of 5 by from Best Chainsaw ever! I've had Craftsman and Huskvarna chain saws in the past and this Stihl leaves them in the dust (so to speak). I cut a lot of firewood every year, so I need a reliable chainsaw that allows me to get the job done efficiently. My Stihl starts easy, has lots of power and is light weight vs.capability. This is a truly great chainsaw.
Date published: 2018-03-14
Rated 5 out of 5 by from Great saw! Everyone I camp with has a stihl. Now I do also. Dependable!
Date published: 2018-03-12
Rated 4 out of 5 by from Starts and restarts, but dulls quick Power was sufficient, and relatively easy to start. Main issue was that I has to sharpen pretty frequently.
Date published: 2018-03-12
Rated 3 out of 5 by from It's just ok ! I have cut around 10-15 trees in my yard with the average tree being around 100' tall and the saw held up ok for what it is intended for,.. medium use. The chain came off the bar several times and kept coming lose. I think it's due to just having one nut to tighten down the bar and I'm use to the two nuts. I'm trying to get use to the goofy gas and oil caps but I really don't care for them. You have to get them lined up just right to be able to close them. I don't like fiddle farting around with them ,... I want to just fill and go ! I would have gotten a bigger saw in which I'm use to owning but I think they are overpriced. I think I prefer the Husqvarna chainsaws better but that's just me.
Date published: 2018-03-12
Rated 5 out of 5 by from Awesome chainsaw Awesome chainsaw and very glad I went with the multiple recommendations from friends and family. My neighbor’s tree opted to fall into my backyard and almost take out my house. 30feet of 20 inch diameter trunk and 16 inch limbs. The Wood boss earned its name and made quick work of that Saturday morning project. Bypass the big box stores folks and hit up your local dealers. You will be happy you did!
Date published: 2018-03-11
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