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Parts books are becoming a thing of the past because part numbers evolve and change constantly.
I don't know of a downloadable book for either
The Part# for the L2501 Parts manual is 97898-26320
and the WSM for the LA525 is 9Y111-10141
You could very easily go to https://apps.kubotausa.com/illustrated-parts/ and pull up the parts for the loader and copy the pages as there isn't that many, and save them to PDF.