PROBLEM TO BE SOLVED: To solve a problem in a conventional riding mower in which it is difficult to contain a collector without a tilt in the center of a vehicle body in the lowermost position.SOLUTION: A riding mower is characterized as follows: a left-side link frame abutment member 450 L and a left-side support base receiving member 150 L are arranged so that an abutment surface 451 L of the left-side link frame abutment member 450 L may come in abutment with a receiving surface 151 L of the left-side support base receiving member 150 L, when a collector 700 is in the lowermost position in the lifting/lowering operation a right-side link frame abutment member 450R and a right-side support base receiving member 150R are arranged so that an abutment surface 451R of the right-side link frame abutment member 450R may come in abutment with a receiving surface 151R of the right-side support base receiving member 150R, when the collector 700 is in the lowermost position in the lifting/lowering operation the receiving surface 151 L of the left-side support base receiving member 150 L is tilted and the receiving surface 151R of the right-side support base receiving member 150R is tilted.SELECTED DRAWING: Figure 8【課題】 従来の乗用草刈機においては、コレクターを最下位置において車体の中央に傾斜なく収容することが困難である。 【解決手段】 コレクター700が昇降操作における最下位置にあるとき、左側リンクフレーム当接部材450Lの当接面451Lが左側支持台受け部材150Lの受け面151Lに当接するように、左側リンクフレーム当接部材450L、および左側支持台受け部材150Lは配置されており、コレクター700が昇降操作における最下位置にあるとき、右側リンクフレーム当接部材450Rの当接面451Rが右側支持台受け部材150Rの受け面151Rに当接するように、右側リンクフレーム当接部材450R、および右側支持台受け部材150Rは配置されており、左側支持台受け部材150Lの受け面151Lは、傾斜しており、右側支持台受け部材150Rの受け面151Rは、傾斜している乗用草刈機である。【選択図】 図8
