Grass collector mounting system

A riding mower carries a grass collector at the rear of the mower frame. A mounting system for the grass collector comprises a mount that pivotally couples the lower portion of the grass collector to the mower frame. The pivotal mount comprises a pair of hooks each of which is inserted onto a pivot rod. In addition, the mounting system comprises a quick connect fastening system that includes a pair of spring biased retaining pins that can be latched in a retracted, non-operative position or unlatched so that the spring bias on the pins is able to move the pins into an extended, operative position. In the extended, operative position of the retaining pins, the pins fasten or secure the grass collector to the mower frame in a substantially upright, operative position of the grass collector.