MM 55 STIHL YARD BOSS®


Distributor Suggested Retail Price DSRP:   $349.95

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Using a universal power train, this cultivator can transition into other useful tools for around the home or farm.

There are not too many things a STIHL YARD BOSS® can't handle. One of two great multi-task yard care systems, the lightweight and powerful MM 55 C-E STIHL HomeScaper Series™ YARD BOSS® offers the same versatility as the MM 55 but features the Easy2Start™ system. With a pick tine cultivator set included as standard, this system is also available with an optional weight kit — helping the tines more ...Read More
Print Spec Sheets
MM 55 STIHL YARD BOSS® Specifications
DISPLACEMENT 27.2 cc (1.66 cu. in.)
ENGINE POWER 0.8 kW (1.07 bhp)
WEIGHT 9.5 kg (20.9 lbs.)
FUEL CAPACITY 330 cc (11.2 oz.)
TINE SPEED 200 rpm
CULTIVATING WIDTH 8.5"
PICK TINE DIAMETER 9.1"
POWER SOURCE Gas
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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    Compact Design
    The folding handles and front hand grip make the YARD BOSS® compact and easy to transport and store.

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    Multi-Tasking Tool
    Switch between any of the eight YARD BOSS® optional attachments quickly.

    See it in action!
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    Multi-Function Control Handle
    Having easy access to all of the controls on one comfortable handle makes it easy to complete tasks so the operator’s hand never has to leave the handle.
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    Protected Spark Plug Cover
    The spark plug cap is integrated in the equipment’s housing, so the spark plug remains protected while still being easy to change.
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    Purge Pump Primer
    A small fuel pump delivers fuel to the carburetor when pushed, reducing the number of starting strokes required following extended breaks in operation.

Important Information
Note: STIHL recommends use of fuel with no more than 10% Ethanol content. Using fuel with greater than 10% Ethanol content may cause damage to your equipment and may void your STIHL warranty. Learn More…
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.

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For Your Safety
  • GSX Glasses Zoom
    GSX Glasses
    STIHL GSX Protective Glasses feature adjustable temples allowing a customized fit and a soft nose pad that offers comfort that lasts all day. Polycarbonate glasses with impact-resistant lens provide 99% UV protection.
  • Work Gloves Zoom
    Work Gloves
    Double palm layer and finger tips provide long life. Breathable polyester back and knit wrist provide snug fit. One size fits most.
  • STIHL® Pro Mark™  Hearing Protector Zoom
    STIHL® Pro Mark™ Hearing Protector
    Padded stainless steel spring wire headband maintains constant pressure. Easy to adjust. Noise Reduction Rating (NRR): 29. Meets ANSI S3.19-1974 standard.

    Colors available: Camouflage, Orange and Grey

Are you ready for a STIHL?

MM 55 STIHL YARD BOSS® is rated 4.5 out of 5 by 5275.
Rated 4 out of 5 by from Very satisfied I really like my Yard Boss! The only problem I have had is using Alcohol/Oxygenated gas. It will plug up the carburetor if the unit sits for more than a week. Use non Alcohol/Oxygenated premium fuel with Sea Foam or fuel extender. Modern fuels with no lead cause almost all of the problems.
Date published: 2016-11-01
Rated 2 out of 5 by from Yard Boss Refuses To Work From the time time that it was new you had to crank it 5 or 6 times before it would stay running. Then it would not take the gas, it would just bog down. After 5 minutes it would run fine but had no power. The dealer would play with the carburetor and say that it was fixed. After it cooled off it was the same old thing. I finally bought a new carburetor and it worked great after that.
Date published: 2016-10-19
Rated 2 out of 5 by from Excellent Chain saws but horrible Yard Boss I have purchased two chainsaws of different size for different purposes- one about 10 years ago, and another 2 years ago. They are working amazingly well. Based on my first experience, I bought the Yard Boss. It worked great the first season. It didn't start the second season and I had to pull many times but of no use (just like other customers reported). I had to take it to the dealer for service. and it was fine that season. However, back to starting problems this season again. Changed the spark plug and air filter, but it is of no use. Tired of this, and getting ready for another trip to the service dealer. Once the Yard Boss starts it works very well, but starting is the problem.I have several other machines and NONE of them posed similar problems. I very much support the purchase of Stihl chainsaws but not the Yard Boss.
Date published: 2016-09-26
Rated 5 out of 5 by from Light weight - Easy to Start - Very Good Product I have had my Yard Boss tiller for a couple of weeks and am very pleased with its performance. I have run about 2 tanks of fuel out thus far and have tilled already broken up ground as well as un-tilled earth. Obviously this tiller was not built to break up earth that had never been tiled but it has done well in my beds as well has some fairly hard ground.I will say that the only thing that I will have to watch out for and continue to maintenance is the tilling head becomes loose and will swivel on the shaft. I hit some pretty large rocks and the torque has loosened the tilling head. I think this is just part of reality and I will have to make sure everything is tight when I start each time.I am using True Fuel in the tiller because of past 2 cycle engine problems and hope this will keep me from having the fuel system working on in the future. If I see that I will use the tiller a lot in a season I will buy the Synthetic Stihl oil to mix with good gasoline.Thus far everything is good.
Date published: 2016-08-31
Rated 5 out of 5 by from This little machine does great on big jobs This is a great little machine, it will till where ever you put it, big or small plots
Date published: 2016-08-19
Rated 2 out of 5 by from My tiller never starts. I have never got this tiller to start without taking it in to the D&B where I bought it and they always have to remove the carburetor and put it back together before it will start for them. I have 3 STIHL chain saws and they start with little problem.
Date published: 2016-07-28
Rated 5 out of 5 by from Great tool to have I own and operate a landscape company. I bought a M55 yardboss made by Stihl ,specifically to finish my artificial grass installations. Works great. I love it.
Date published: 2016-05-10
Rated 1 out of 5 by from very disappointed! I own several Stihl produces (MS 180 C, FS 56 RC, and BG 56 C) and haven't regretted any of my past Stihl purchases however I purchase the Stihl mm 55 yard boss with the wheel kit and the FS-MM trimmer attachment and am very disappointed. Sorry to say that my Mantis tiller I had for years is 10 times the tiller the Yard Boss is. Stihl makes great products but I can't recommend this product.
Date published: 2016-05-07
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