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.
2 horsepower is equal to approximately 1492 watts.
One kilowatt is approximately equal to 1.34 horsepower.
1.341hp per kW
Looks like it is about 6.5 HP
мотокультиватор expert 139cc
1.2 hp = 894.839846 watts
I horsepower equals 1/315th of 315 horsepower
Doesn't work that way, no way of telling.
746watt
746 watts equals one horsepower.
1 kilowatt (kW) equals 1.3410220888 brake horsepower (BHP). Therefore, 100 kW equals 134.10220888 BHP and 1 BHP equals 0.745699872 kW.
I'm not an expert by any means but your dealing with apples and oranges. Horsepower is of course a measure of power whereas cc is a measure of displacement. I don't know what is the equivalent of horsepower in the metric system.