The invention relates to a working machine system, including equipment for felling a tree (1, 18) to be processed, equipment (14) for delimbing branches (20) of the tree (1, 18), and equipment for cutting the tree trunk to a desired length. In addition, the working machine system includes equipment for producing chopped wood, said equipment including means (9, 9) for riving a trunk of the felled tree (18) in a longitudinal direction of the tree, as well as chopping means (11) for cutting the tree to a length matching that of chopped wood.
