Built in the USA
Indicates products that are built in the United States from domestic and foreign parts and components.
The folding handles and front hand grip make the YARD BOSS® compact and easy to transport and store.
See it in action!
Switch between any of the eight YARD BOSS® optional attachments quickly.
See it in action!
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.
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.
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.
STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.
FS-MM Trimmer AttachmentNow you can turn your STIHL YARD BOSS® into a quality wheeled trimmer, adding ease and convenience to your trimming tasks – all for much less than the cost of a dedicated trimmer mower. The STIHL FS-MM trimmer attachment features a dependable STIHL AutoCut® 25-2 trimmer head for precision cutting tasks. To advance the line, just tap the trimmer head against the ground. Need to change the trimmer head? The FS-MM trimmer head is designed to be removed and replaced with a wide range of STIHL trimmer heads, including STIHL SuperCut™, FixCut™, DuroCut and more!
Note: Must be used with wheel kit.
HP Ultra 2-Cycle Engine OilHP 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.
KW-MM STIHL PowerSweep™ AttachmentHeavy-duty rubber flaps clean up compacted dirt on roads and sidewalks, moves pebbles and sand from grassy turf, and even removes water and light snow from hard surfaces.
Note: This attachment must be used with large deflector and extensions.
FC-MM Bed Edger AttachmentUsed to cut a defined or distinct edge to separate the grass lawn from the cultivated soil in a planting area.
GSX GlassesSTIHL 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 GlovesDouble 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 ProtectorPadded 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
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- Get the ease of reserving online while still having access to advice from your local STIHL Dealer.
Distributor Suggested Retail Price
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STIHL OUTFITTERS™ goods are sold and shipped by authorized STIHL OUTFITTERS™ Licensees. Ordering online is easy and items can be delivered directly to your address.
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MM 55 STIHL YARD BOSS® Description
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 efficiently cultivate the soil. An optional bolo tine cultivator set for mixing soil is also available.