MTD variable pulley
My 1990 38" MTD 12.5Hp Briggs has the variable pulley drive with lever that gives the various "gears". This mower has seen lots of use and the durability of this variable pulley has amazed me. It is apparently quite a good system. The belts on that pulley are the originals. I have not serviced that pulley at all. It now is not doing so well. When this mowing season ends, it will get careful disassembly and repair/replacement as necessary. New belts are no problem to find and the idler will be replaced also. But the variable pulley itself is sort of a mystery to me. Apparently no aftermarket supplier offers it, so if a new one is needed, I would have to get it from MTD. What about that pulley does/can wear? Bearings in the pulley replaceable as separate items? Tell me all you know about servicing this pulley? Price of new one?