Mitsubishi MTE2000D, Dig It 258 Mini Ex, Deere Z930A ZTR
I have always read that PUG used common parts for all their machines and a quick Google of PUG's website showed that the F570 uses a Dana/Spicer transaxle. I know Surplus Center used to carry some of the N.O.S. D/S transaxles...might not have what you need but point is, check what model transaxle it is and look for parts through Dana suppliers.