The presented invention is a hay fluffer which includes a frame that is configured to be pulled by a vehicle and a drive assembly supported by the frame. The drive assembly consists of wheels whose rotation, using a system of chains and gears, powers the turn of a rotation shaft. The rotation shaft has, attached, a sequence of cogs with each cog containing three recesses equally spaced and a tine set fitted into each of the three recesses in each cog. Tine sets may be removed and replaced by removing a single reversible fastener.
