The whole machine had to be disassembled, this isn't a novice repair. The console has to be removed, upper rear panel, top, lower access panel, front panel with door, vent duct, and drum. Clean out all the accumulated lint, install the belt around the drum and make sure you sit the drum back on the rollers at the back of the machine, you might need someone to hold it in place while you reach under the drum and feed the belt under the tensioner. Reinstall all the panels hook the two springs to the door hinge and make sure you can turn the drum by hand before you turn it on.