SUMMARY OF THE INVENTION It is an object of the present invention to provide a combine which is easy to perform a maintenance operation of a driving section even when a driving section is covered by a cabin. A driving unit 11 positioned at a front lateral side of the running vehicle, a driving unit 30 positioned below the driving unit 11, and a cabin 12 covering the upper side of the driving unit 11 And the cabin 12 is supported on the upper portion of the engine bonnet 22 so that the cabin 12 can swingably open and close about the longitudinal central axis of the cabin front side. The front cabin 22A, The engine bonnet 22 constituted in such a state that each of the transverse cover portion and the upper side cover portion 22C provided with the introduction portion are integrally connected is formed in such a manner that the operation seat 13 passes through the lift opening in the opened state of the door And is supported on the base frame 10 so as to be swingable about the axis X in the gas front and rear direction so as to be switchable between a normal attitude and a maintenance attitude. It is another object of the present invention to provide a combine which is provided with a cabin which covers the upper part of the operation part and which can easily perform a maintenance operation inside the operation part or the gas inside the operation part. A cabin 12 is provided which is provided on the front side of the traveling base 2 and covers the upper portion of the operation section 11 located at a front lateral side of the traveling base 2, The operation section 12 is overlapped with the preload section 3 in the vertical direction so as to cover the normal use posture in which the operation section 11 covers the upper part of the operation section 11 and the upper part of the operation section 11, And is supported on the base frame 10 so as to swing around the lower transverse core P2 over the forward collapsing posture. It is another object of the present inve