A lever operation device (10A, 10B) comprising: an operation portion having a base end rotatably and pivotally supported, and a top end portion provided with a guide hole; a lever provided to the base end of the operation portion, the lever changing a position of the top end portion of the operation portion; a cam provided at a position facing the top end portion of the operation portion, the cam having an abutting-target surface (12a, 12b) that is recessed and that extends in operation directions of the lever; a detector for detecting a predetermined signal based on the position of the top end portion of the operation portion; and a tactile pin biased in a forward direction and inserted into the guide hole so as to be movable back and forth, the tactile pin having, at a top top end, an abutting-end portion abutting the abutting-target surface (12a, 12b) of the cam, the abutting-end portion sliding on the abutting-target surface (12a, 12b) as the position of the top end portion of the operation portion changes, wherein the tactile pin has, on an outer peripheral surface, two first inclined surfaces (23b, 23f) at positions facing each other in the operation directions of the lever, the guide hole has, on an inner peripheral surface, at a position facing the first inclined surface, two second inclined surfaces (22b, 22f) at positions facing each other in the operation directions of the lever, wherein the two first inclined surfaces (23b, 23f) and the two second inclined surfaces (22b, 22f) each have a flat surface, a normal direction of the two first inclined surfaces (23b, 23f) is inclined with respect to the operation directions of the lever, a normal direction of the two second inclined surfaces (22b, 22f) is inclined with respect to the operation directions of the lever, and the tactile pin is biased in a direction toward which the two first inclined surfaces (23b, 23f) of the tactile pin abut the two second inclined surfaces (22b, 22f) of the guide hole, wherein the two first inclined surfaces (23b, 23f) and the two second inclined surfaces (22b, 22f) abut each other. an operation portion having a base end rotatably and pivotally supported, and a top end portion provided with a guide hole; a lever provided to the base end of the operation portion, the lever changing a position of the top end portion of the operation portion; a cam provided at a position facing the top end portion of the operation portion, the cam having an abutting-target surface (12a, 12b) that is recessed and that extends in operation directions of the lever; a detector for detecting a predetermined signal based on the position of the top end portion of the operation portion; and a tactile pin biased in a forward direction and inserted into the guide hole so as to be movable back and forth, the tactile pin having, at a top top end, an abutting-end portion abutting the abutting-target surface (12a, 12b) of the cam, the abutting-end portion sliding on the abutting-target surface (12a, 12b) as the position of the top end portion of the operation portion changes, wherein the tactile pin has, on an outer peripheral surface, two first inclined surfaces (23b, 23f) at positions facing each other in the operation directions of the lever, the guide hole has, on an inner peripheral surface, at a position facing the first inclined surface, two second inclined surfaces (22b, 22f) at positions facing each other in the operation directions of the lever, wherein the two first inclined surfaces (23b, 23f) and the two second inclined surfaces (22b, 22f) each have a flat surface, a normal direction of the two first inclined surfaces (23b, 23f) is inclined with respect to the operation directions of the lever, a normal direction of the two second inclined surfaces (22b, 22f) is inclined with respect to the operation directions of the lever, and the tactile pin is biased in a direction toward which the two first inclined surfaces (23b, 23f) of the tactile pin abut the two second inclined surfaces (22b, 22f) of the guide hole, wherein the two first inclined surfaces (23b, 23f) and the two second inclined surfaces (22b, 22f) abut each other.