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
  • 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
We Also Suggest
  • HP Ultra 2-Cycle Engine Oil Zoom
    HP Ultra 2-Cycle Engine Oil
    HP Ultra is a fully synthetic 2-cycle engine oil specially suited for high performance chainsaws and power tools. This oil has outstanding engine cleaning characteristics, plus “ultra” superior lubricating qualities in comparison to other 2-cycle engine oils. It is ideal for use in STIHL 4-MIX® engines. This oil is biodegradable, degrading by 80% in 21 days.

    •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.

  • Woodsman Chainsaw Carrying Case Zoom
    Woodsman Chainsaw Carrying Case
    Woodsman carrying case. Unique, removable bar scabbard has built-in tool holders to carry tools to the cutting site. Fits MS 170 to MS 460 M with 20" bar.

    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
  • Woodcutter Chaps Zoom
    Woodcutter Chaps
    Apron Chaps from STIHL are made from rugged, 400-denier nylon and feature the same UL® classified protection as our other chaps. Just snap them over your pants and you’re ready to go. Sewn into the legs of the chaps are six layers of Avertic® Pro by Engtex®, a cut-retardant material designed to clog the sprocket and stop the saw chain on a gasoline-powered chainsaw in case of accidental contact with the rotating saw chain. The open back design of these chaps makes them a great choice for hot working conditions.
  • Woodcutter Helmet System Zoom
    Woodcutter Helmet System
    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.
  • STIHL HomeScaper Series™ Gloves Zoom
    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?

MS 251 WOOD BOSS® is rated 4.4 out of 5 by 199.
Rated 5 out of 5 by from A product with excellent reliability. When I realized I needed to purchase a new chain saw the first name that came to mind was Stihl. The reason for thinking Stihl is reliability. I learned this years ago by purchasing other Stihl products. Reliability comes from quality and giving the customer a great machine and standing behind it. In the event repair is ever needed the expertise of highly trained technicians to restore the machine to top performance is available locally.
Date published: 2017-03-23
Rated 4 out of 5 by from Reliable saw I am the head fleet mechanic for a landscape company and deal with a ton of small equipment. I have always felt that the Stihl products were superior to others. This is not my first Stihl saw, I had an ms310 that gave up the fight after hundreds of cords of wood. Wanted a lighter saw that could still handle an 18" bar. It doesn't hog as fast as the 310 through a tree but my back thanks it. It's significantly better on fuel. Only problem I had with it is as when it was new, seemed to flood easy. 3 pulls on any Stihl I have been around usually floods it but this one was extra sensitive. I switched to using the premixed fuel at the John Deere dealer in town and haven't had a problem since. I chocked it up to ethanol in the fuel at the local gas stations and the higher price is worth it to mean in longevity of the machine and less frustration. Other than that, it's a great saw for use cutting wood for th burner and building fences for the cows. Happy to stand behind it.
Date published: 2017-03-20
Rated 5 out of 5 by from Outstanding performance It is an awesome product, very dependable. Never fails to start. I would highly recommend this saw in fact I have.
Date published: 2017-03-19
Rated 5 out of 5 by from Awesome product What a great product easy to start and maintain and very reliable
Date published: 2017-03-15
Rated 5 out of 5 by from This product has great features and power I have only used the saw to trim several 3'' to 4'' branches ,but it starts easy and is very easy to handle. It has more than enough power to do the jobs i need to do around the house and at my deer lease.
Date published: 2017-03-14
Rated 5 out of 5 by from best chainsaw I have used My wife and I are clearing 2 acres wih only this saw and our hands, and I couldn't be happier with it. Starts easy cuts through the trees with ease. I can't believe the difference it makes when you buy a quality product instead of the other 2 we have bought. Highly recommend this chainsaw.
Date published: 2017-03-13
Rated 5 out of 5 by from Great saw, light weight Great saw - well balanced with the 18 inch blade, easy to grip and use, light weight, good power to weight ratio, 3/8 chain makes quick, clean cuts.
Date published: 2017-03-08
Rated 5 out of 5 by from Great little home owners saw Easy to start light weight. Works great trimming trees and cutting fire wood
Date published: 2017-03-07
  • y_2017, m_3, d_26, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_199
  • loc_en_US, sid_ms251, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_stihl