Each steamjack is made up of four static pieces: torso, head, left leg, and right leg. When assembled correctly these pieces will lock securely into place. After assembly, attach each steamjack to its base with the pegs on the bottom of its feet. Make sure to use the two bases with less space between the peg holes than the other eight for the blue crushers. Once that is done you can customize the arm configuration of your team before each game.
Also available as a PDF download.