MS 251 WOOD BOSS® - $329.95 DSRP


Distributor Suggested Retail Price
18 in. Bar

DSRP: $329.95

Quantity:

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 (2.95 bhp)
POWERHEAD WEIGHT 4.9 kg (10.8 lbs.)
FUEL CAPACITY 390 cc (13.2 oz.)
CHAIN OIL CAPACITY 198 cc (6.7 oz.)
OILOMATIC® CHAIN .325" RM3
GUIDE BAR LENGTHS* (Recommended ranges) 40 to 45 cm (16" to 18")
STIHL ROLLOMATIC®
POWER SOURCE Gas
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 depending upon which powerhead it is installed.
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

  • 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
    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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    •2.6 oz. bottle makes 1 gallon mix

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    STIHL recommends a mix of 50:1 high-quality 89 octane or higher unleaded gasoline to STIHL engine oil. This same mix ratio should be used during break-in.

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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.
    Includes file guide, depth gauge, round file, flat file and two file handles in tool pouch.
    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

For Your Safety
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    STIHL Pro Mark™ Dynamic Protective Gloves
    Durable and hardworking, STIHL Pro Mark™ Dynamic Gloves deliver professional-grade hand protection. The palm and inner fingers are made of full grain tanned leather, so you can work with comfort without sacrificing a firm hold. Featuring multiple layers of cut-retardant materials – Avertic® Pro and Dyneema fabrics by Engtex® – these gloves will help deliver protection without compromising the dexterity you need while operating a chainsaw. Accented with an orange rip-stop nylon backing, these dynamic gloves offer style and protection. Water repellant, breathable and featuring a Velcro wrist closure, STIHL Pro Mark™ Dynamic Gloves are as ready for the woods as you.
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Are You Ready for a STIHL?

MS 251 WOOD BOSS® is rated 4.4 out of 5 by 276.
Rated 5 out of 5 by from Great saw for a new home owner! I bought my STIHL about 2 months ago when I moved into my new house. There were small to medium sized pines everywhere. The saw worked great taking them down! I'm sure it could do more, but I didn't need it to... not yet. I purchased my STIHL based on reputation and quality. I highly recommend it.
Date published: 2017-11-16
Rated 5 out of 5 by from Product has performed well The saw has performed beautifully. Hurricane Irma provided a substantial Chestnut tree that the saw made quick work of. I also used it over 10 days of clearing 40' tall bamboo and it performed very well. I am very pleased with the power, ease of operation and reliability.
Date published: 2017-11-16
Rated 5 out of 5 by from Crank, Cut, repeat. Wanted a saw that would crank easily, and cut. After doing research and price comparisons, the wood boss fit the bill.Very happy with purchase and the support I received when buying the saw.
Date published: 2017-11-14
Rated 5 out of 5 by from Love it This thing starts like a champ, cuts like butter, and has ample power to keep going. I am running a yellow chain which this girl loves to use. I can’t say I have a complaint or con. And Deer Park Lawnmower where I bought it was amazing.
Date published: 2017-11-12
Rated 5 out of 5 by from Great saw Perfect for home use. Good for firewood as well as tree maintenence
Date published: 2017-10-30
Rated 4 out of 5 by from Cuts well. I enjoy the saw when it's running. Our ACE store adjusted the carb for our elevation before letting me take it home, but it still doesn't quite start reliably. I can always get it on eventually, but sometimes it takes more cranks than you'd think a new saw would take. This could be just me doing something wrong with maintenance or something. It cuts like a dream though, it's pretty lightweight, and adjusting the chain tension is a lot easier than it was on previous models.I bought STIHL because of the longevity claims though. So the real test will be whether or not I have to replace it in a couple of years.
Date published: 2017-10-27
Rated 1 out of 5 by from good power bad design 30 years exp. used saw for less than 3 hours chain tensioner froze would not loosen or tighten clutch is already wore out repair guy says.called stihl waiting on outcome.
Date published: 2017-10-09
Rated 5 out of 5 by from Let the Chips Fly I upgraded from an MS 170 which I used for 4 years and cut over 30 cords of wood and probably 100+ old growth dead standing red oaks with... It is still going strong and is a joy to use. It was light and easy to manuever for limbing.The MS 251 excels are raw power and vibration control. It also starts really well. It is much heavier to use for hours on end, but if you limb with a small saw and then fire up this for the main trunk and branches, the job goes a lot faster with less fuss. It can handle anything you will find on the east coast with the 20" bar. The bar is actually a bit much and I can't wait to re-fit it with a 16" to try for limbing and small trees. It ate up these huge hemlocks and ripped right through really tough hard beech that my MS170 struggles with unless ultra sharp.
Date published: 2017-10-06
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