MS 251 WOOD BOSS® - $339.99 DSRP


Distributor Suggested Retail Price
18 in. Bar

DSRP: $339.99

Quantity:

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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

    •5.2 oz. bottle makes 2 gallon mix

    •6.4 oz. bottle makes 2 1/2 gallon mix

    •12.8 oz. bottle makes 5 gallon mix

    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.

  • Bar and Chain Oil Zoom
    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.

    Available in quart and gallon bottles, 5 gallon pails and 55 gallon drums, in both summer and winter weights.

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    Woodsman Chainsaw Carrying Case
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    Replacement latches and scabbard are available.

  • Complete Filing Kits Zoom
    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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MS 251 WOOD BOSS® is rated 4.4 out of 5 by 264.
Rated 5 out of 5 by from Excellent saw This is my first chainsaw. It has a lot of power at an affordable price. It cuts through logs with no problem and isn't too heavy. If you are unsure of the size saw you need for homeowner tasks and occasional bigger jobs, this is the way to go! Oh and very easy to start if you read the instructions on how to do it.
Date published: 2017-09-21
Rated 5 out of 5 by from Another Quality Stihl Product I work for a licensed Stihl dealer in Ottawa lake Michigan. I see the high quality and great value of many Stihl products on a daily basis. Previously I worked for a landscape company experiencing many tools in the field and now in the shop. Picked up this saw for work around home and small side jobs. have put 4-5 tanks of fuel through the saw. Running Moto-Mix, Wood cutter bar oil, 18" bar with a full chisel chain this saw is a running sun of a gun. been very impressed with the weight to power ratio of the saw thus far. Keep a sharp full chisel chain on the saw and it will cut through most small timber in the Ohio/Michigan area with ease. only complaint is the saw has a single bar nut so keep a scwrench handy and check that the bar nut is tight regularly. Haven't had any issues thus far just an precaution I deemed necessary since purchase.
Date published: 2017-09-21
Rated 3 out of 5 by from Disappointed Very disappointed...The starter pull cord broke twice during the first week.
Date published: 2017-09-20
Rated 4 out of 5 by from Best chainsaw I have ever owned. Great product! Well built. Plenty of power for a home owner. Used to clear some trees and cut firewood.Love the easy access to adjust tension on the chain.Cover, chain, and bar are easy to remove and replace. Makes clean up a snap.
Date published: 2017-09-18
Rated 4 out of 5 by from Back up saw to my Husky Bought this saw as a back up for my 25 year old Husky. Got it just before hurricane Irma hit. Has been going since. Hard to find replacement chains this week with all the power outages and downed trees. Been helping the elderly neighbors, using both saws. Hope it holds up like my Husky has and I'll be happy.
Date published: 2017-09-15
Rated 4 out of 5 by from Ms251 woodboss is a good saw, but I have noticed... I bought this saw (ms251 withought easy start or easy chain tensioner) over a month ago. Cut down a dying/dead 10" apple tree days after purchasing. The job was a breeze (aside from the heat in NC), and the chain performed great. I personally have not had issues with starting the chainsaw. I believe many people who are experiencing these issues (admitted by some) are Not following the appropriate steps. If cold, move choke lever to cold choke. Pull the starter rope until it starts to fire, making sure you don't exceed 3-4 pulls as to not flood the engine. Next, move lever to the "starting choke" position, and pull starter rope to finish the startup. If warm, or if you've started it already that day, begin starting the saw in the "starting choke" position. Simple as that. My only issue with the saw, after cutting down a handful of trees, is that the chain is not being oiled sufficiently. Oil is coming out (as I removed the bar/chain and started the saw briefly to observe this), but not enough comes out to properly lubricate the chain. I have been manually lubricating the chain before, and sometimes, during a job. This seems to be a recurring issue amongst owners of this saw. It's important to have the chain lubricated so that the chain, bar, and clutch down overheat, and so the chain doesn't dull out prematurely. While this is unfortunate, and somewhat annoying, I still enjoy the saw, and am impressed with its performance.
Date published: 2017-09-11
Rated 5 out of 5 by from very good choice i have cut up about 12 8 foot logs of various thickness and not disappointed at all.
Date published: 2017-09-10
Rated 5 out of 5 by from Best bang for your buck I received this beauty from my family on my 63rd Birthday, I can tell you - I am very pleased indeed! I have felled quite a few Ash trees that had emerald bore infestations on my property. These aren't sissy trees, they are good size and the Wood Boss held up to it's name.Easy to start - easy to operate as long as you are conscious of your surroundings and stay alert and safe.Good weight distribution and pretty quite too.
Date published: 2017-09-09
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