Tiller Tine Direction
There is an almost endless number of ways to arrange the tines on your tiller. You can set it up to make the final product flat, with rows, coarse, fine, or any combination of the above. The most common way is to make the final tilled soil flat and that can be accomplished with the tines as pictured below. End driven models- 
Center driven models
Note that the end tines are no longer available and can just be left off.