мотокультиватор expert 139cc
There is no way of answering this question accurately, as there is no direct correlation betwen cubic centimeters and horsepower. In addition, horsepower is also a function of engine rpm. For example, one engine of 139cc at 2000 RPM might develop X horsepower, but another engine with 139cc at 2000 rpm might develop X+2 horsepower.
Well, friend, a 139cc lawn mower engine typically has around 3-5 horsepower. It may vary slightly depending on the specific make and model, but that's a good ballpark estimate. Just imagine all that power gently guiding you as you create beautiful landscapes in your yard.