A working machine comprising: a support bracket attached to a machine body; at least one first mounting member (J1, J2, J3, J4) provided to the support bracket and formed of an elastic member; and a first cooler and a second cooler arranged in parallel to a horizontal direction and mounted on the support bracket with the at least one first mounting member (J1, J2, J3, J4), characterized by comprising; a support frame to which the second cooler is attached; a fitting bracket detachably fitted to upper portions of the first cooler and the support frame; and second mounting members (J5, J6, J7, J8) arranged between the fitting bracket and the first cooler and between the fitting bracket and the support frame and formed of elastic member, wherein the first cooler includes first upper protruding portions (b5, b6) that protrude upward, the support frame includes second upper protruding portions (b7, b8) that protrude upward, the second mounting members (J5, J6, J7, J8) include second mounting members (J5, J6) for the first cooler and second mounting members (J7, J8) for the second cooler, the second mounting members (J5, J6) for the first cooler being arranged between the fitting bracket and the first cooler, the second mounting members (J7, J8) for the second cooler being arranged between the fitting bracket and the support frame, the second mounting members (J5, J6) for the first cooler include respective upper elastic members (J5, J6) for the first cooler that are arranged corresponding to the respective first upper protruding portions (b5, b6) and that have respective holes to which the respective first upper protruding portions (b5, b6) are inserted, the second mounting members (J7, J8) for the second cooler include respective upper elastic members (J7, J8) for the second cooler that are arranged corresponding to the respective second upper protruding portions (b7, b8) and that have respective holes to which the respective second upper protruding portions (b7, b8) are inserted, and the fitting bracket is fitted to the upper portions of the first cooler and the support frame under a condition where the first upper protruding portions (b5, b6) are inserted to the respective holes of the respective upper elastic members (J5, J6) for the first cooler and the second upper protruding portions (b7, b8) are inserted to the respective holes of the respective upper elastic members (J7, J8) for the second cooler. a support bracket attached to a machine body; at least one first mounting member (J1, J2, J3, J4) provided to the support bracket and formed of an elastic member; and a first cooler and a second cooler arranged in parallel to a horizontal direction and mounted on the support bracket with the at least one first mounting member (J1, J2, J3, J4), characterized by comprising; a support frame to which the second cooler is attached; a fitting bracket detachably fitted to upper portions of the first cooler and the support frame; and second mounting members (J5, J6, J7, J8) arranged between the fitting bracket and the first cooler and between the fitting bracket and the support frame and formed of elastic member, wherein the first cooler includes first upper protruding portions (b5, b6) that protrude upward, the support frame includes second upper protruding portions (b7, b8) that protrude upward, the second mounting members (J5, J6, J7, J8) include second mounting members (J5, J6) for the first cooler and second mounting members (J7, J8) for the second cooler, the second mounting members (J5, J6) for the first cooler being arranged between the fitting bracket and the first cooler, the second mounting members (J7, J8) for the second cooler being arranged between the fitting bracket and the support frame, the second mounting members (J5, J6) for the first cooler include respective upper elastic members (J5, J6) for the first cooler that are arranged corresponding to the respective first upper protruding portions (b5, b6) and that have respective holes to which the respective first upper protruding portions (b5, b6) are inserted, the second mounting members (J7, J8) for the second cooler include respective upper elastic members (J7, J8) for the second cooler that are arranged corresponding to the respective second upper protruding portions (b7, b8) and that have respective holes to which the respective second upper protruding portions (b7, b8) are inserted, and the fitting bracket is fitted to the upper portions of the first cooler and the support frame under a condition where the first upper protruding portions (b5, b6) are inserted to the respective holes of the respective upper elastic members (J5, J6) for the first cooler and the second upper protruding portions (b7, b8) are inserted to the respective holes of the respective upper elastic members (J7, J8) for the second cooler.