The invention relates to a self-propelled outdoor power equipment unit, an attachment for use with such a unit and associated methods. The unit may be in the form of a mower having a mower deck. The attachment includes a hopper and conveyor assembly for discharging particulate material from the hopper. The conveyor assembly has operational and stored positions, the latter of which provides a narrower profile of the attachment and unit. The attachment and mower deck may be mounted on the frame of the unit together or separately. The attachment is configured for rapid mounting and dismounting on the frame of the unit, and provides additional functionality to a mower or other unit on which the attachment is mounted.
