MS 251 WOOD BOSS® - $329.95 DSRP


Distributor Suggested Retail Price 18 in. Bar DSRP:  $329.95

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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
  • 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
  • Zoom
    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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    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

For Your Safety
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    The lightweight STIHL Woodcutter Helmet System is an excellent choice for budget-conscious non-professional users with chainsaws and pole pruners. Designed for comfort, the vented shell provides cooling air during use, and the 6-point mount suspension provides comfortable support. The STIHL Woodcutter Helmet System is Class G certified and includes NRR 22 hearing protection.
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    STIHL HomeScaper Series™ Gloves
    Innovative keyed thumb stitching for super comfort and gripping ability. Sizes available S, M, L, XL.

Are you ready for a STIHL?

Rated 4.4 out of 5 by 156reviewers.
Rated 2 out of 5 by Too many problems out of the box Overall poor quality is dragging this brand down. Chain oiler is unreliable and often overheated chain. Oiler Smoked when I was cutting or waiting to cut. Engine would not idle well, revved high for no reason. Chain would stop in mid cut or between cuts. No break used. Would have to restart chain by pushing it against wood. The nut to secure bar wouldn't come off, rather the entire bolt unwound! Due to so many problems, I think quality and store site assembly strategy is destroying the brand. I hope I just got a bad one, but who cares about warranty if it's always in shop getting repaired? Huge disappointment. September 21, 2016
Rated 5 out of 5 by father in laws chainsaw is very durable, dependable, and user friendly I borrowed my fathernlaws chainsaw, for a big clean up of our new home that we bought. I haven't ever used a chainsaw very often and so for me to get out and cut trees down for firewood and other smaller saplings for nearly every weekend for the last three weeks without any hiccups. The only hiccup I have had is keeping the three chains sharpened with the all day cutting. This 251 is a good chainsaw and the reason I was on here is to check out the price of a brand new one so I can own my own Stihl 251. As you know, its not so easy to ask the fathernlaw to borrow his tools lol. So I am getting my own stihl! September 20, 2016
Rated 3 out of 5 by Fair saw Good saw over all. Started out well. After the break in period, saw began to miss and was just not running right. Major loss of power and very difficult to get started. Changed the plug and took apart the housing to ensure the air flow was not obstructed. No obvious signs. I am hoping it was just a bad plug, but only time will tell. September 19, 2016
Rated 5 out of 5 by Great Saw This is a great saw! I have been using various chainsaws over the past 10 years. This saw by far was the best saw I've used. September 19, 2016
Rated 3 out of 5 by If chain oiler worked better it would be hard to beat. Cut up one pecan limb about 8 inches diameter and chain will not cut. Upon further inspection it was every other tooth that was worn. The teeth between shows no wear at all. I think I could spit more than the oiler puts out. Stihl should sell plenty of chains with this product. September 13, 2016
Rated 5 out of 5 by Excellent saw Enough power for around the house and easy to start and use September 13, 2016
Rated 5 out of 5 by Great saw Cuts fast. Not to heavy. Easily adjusts. Stihl quality as expected September 12, 2016
Rated 5 out of 5 by "Like a Boss" In having used a Farm Boss several times before, I was very pleased with the performance of my 251 Wood Boss. The more compact size and less weight made it perfect for all day use. I ran it for about 15 hours over the course of my fist week and not the slightest issue with the product. It's simple, ingenious manufacture makes clean up and maintenance a breeze. I highly recommend this product and to recommend to other potential customers that this saw can cut a lot more than you would think. September 12, 2016
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