You can unscrew and replace the wheels with wrench 13, complete with steel pin. Be careful, the body also comes loose if you unscrew all 4 at the same time. You can also remove just the black wheelset using a claw hammer. Remove the wheel set by placing the claw of the hammer under it. To install, press firmly on the wheel set until you hear a click. Always replace two wheels per side to compensate for height differences. See additional images in the picture at the top right.
