Here are the McMaster-Carr #
https://www.mcmaster.com/
Spool valve O rings -- 9262k234
Hydro lines -- O-ring 9452k19
Back up ring 5288t117
Replace the spring while you are in there too. Cub Cadet part#732-3059
Check post #9
https://www.onlycubcadets.net/forum/...light=9262k234
And this one too.
https://www.onlycubcadets.net/forum/...light=732-3059
Good luck and let us know how it goes.