Clean the belt with some isopropyl alcohol and the platter rim. Then apply some ArmorAll to the belt. Do this every 6 to 12 months and the belt will last indefinitely! The ArmorAll lubricates the rubber and prevents drying out. I do this to the belt on my 1978 Ariston RD11S - it remains in like-new condition. ArmorAll will not harm rubber, leather or plastic.
