PROBLEM TO BE SOLVED: To improve safety, in a mowing machine in which engine lubricating oil is stably supplied during a mowing operation on a slope, by forming a simpler and lighter structure to reduce problems and to facilitate maintenance work than in the conventional mowing machine in which the engine is kept horizontal according to the slope gradient, and by preventing increase of falling moment at mowing operation on the slope to stabilize running and to prevent falling under operation.SOLUTION: The mowing machine includes: an undercarriage (1) an engine (2), front and rear wheels (4) cutters for mowing (7 7a) and an operating handle (6) which shifts the direction horizontally at a necessary angle. The axial direction of the cylinder of the engine (2) is inclined to make a necessary acute angle with the direction of the undercarriage (1) in the side which the axial direction of the operating handle (6) is shifted.
