Abstract: One embodiment relates to a universal mounting structure for a lawn striper including a first bracket, a second bracket, a third bracket, a pin, and a spring. The first bracket is configured for mounting to a frame of a lawn mower and includes at least one aperture. The second bracket includes an aperture. The pin is received through the at least one aperture of the first bracket and through the aperture of the second bracket to rotationally couple the first bracket and the second bracket. The third bracket is rotationally coupled to the second bracket and moveable relative to the second bracket between a first position and a second position. The spring is interconnected between the second bracket and the third bracket to bias the third bracket in the first position. A longitudinal axis of the spring remains perpendicular to a longitudinal axis of the lawn mower regardless of how the first bracket is mounted to the frame of the lawn mower.