There are three different clutches, plus it depends on how far you want to go. On the multiplate, you could probably get away with new friction plates $60 in parts. If it is the Centrifugal clutch, $100 for new shoes, but it could need a new drum $150, doubtful if you are referring to the one way clutch, which keeps the centrifugal clutch engaged on the "overrun." New gasket $14, and fresh oil. Labour time about 2.5 hours, but I have spent over an hour extra, removing footwell plastics, when the fastners are rusted solid and bolt heads corroded away.