All in one. One for all. The MM 55 STIHL YARD BOSS® lets you take charge of your landscape with one versatile, lightweight yard tool. This multi-task machine uses a universal power train that accepts a wide range of high-performance attachments and accessories. Switch from its aggressive "pick" style cultivator to other useful tools, including optional trimmer, lawn aerator, dethatcher, bed edger, bristle brush broom and more. And when the job is done, its handles fold neatly for easy storage and transport. The STIHL YARD BOSS® is a must-have for space-savvy homeowners.

Features    Specs


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Built in the USA

Indicates products that are built in the United States from domestic and foreign parts and components.

Compact Design

The folding handles and front hand grip make the YARD BOSS® compact and easy to transport and store.

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.

Multi-Tasking Tool

Switch between any of the eight YARD BOSS® optional attachments quickly.

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.


Cultivating Width



Occasional Use

Engine Displacement

27.2 cc

Engine Power

1.07 bhp

Fuel Capacity

11.2 oz.

Pick Tine Diameter


Power Source


Tine Speed

200 RPM


20.9 lbs.