... performance. Engine type:139F, 4-stroke,air cooled,single cylinderMixing ratio:1:25Displacement:31ccPower:0.7kW/6,500rpmldling ... for: lawn, fruit trees, tea, vegetables, roadside hedges and otherApplication Place: plains, hillsApplicable areas: forestry, agricultureProduct Type: ... cut grass and it is low noise,less fuel consumption,large displacement . 139F 4-Stroke 31cc manual hay mower machine