Once you get the cover off, per coasterbrakejunkie1969's instructions, try to pry the old pad out in one piece. You'll need it as a pattern for a new pad. I've had really good luck using mouse pad material and, if the seat is larger, a drum practice pad. You can find these pads at most drum shops or Guitar Centers. That framework does come apart, if you choose to clean and polish everything. Start by removing the springs and lay them out in order, they're different lengths. The rest is bolted together. Clean the cover down with Simple Green, warm water and a soft brush. Be careful of the tag riveted to the back, it's very thin and you don't want to bend or distort it. Once the cover is dry, sometimes I'll mask off the white yoke and spray a light coat of white Dupli-Color vinyl and fabric paint. Dust it on or it will run. I haven't tried to mask the "S" off yet, as I haven't had to. Here are some pictures of a violet seat I refurbished.
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