having trouble finding drive pully for peerless transaxil?

Have a Poulin automatic lawn tractor. mfg id # hd145h42a serial #120496d001025. model#733-864 uses drive belt part #140294. is 14.5 B&S engine and Peerless 6265-p1 transaxile.
the drive pully and plastic fan disintegrated
am having trouble finding replacement.
any one know where I can find them?