hi graduate owner
you will get one from l.r.e machinery
if you follow this link http://www.woodturninglathes.co.uk/graduate_spares.html
at the bottom of the page there are exploded views that you could print out.
there is virtually no maintainance other than making sure the bearings are well greased via the grease nipples/pots.
which gives a load of sections including a Graduate manual with details on their sanding table and lampstand making attachments, also a 4 page article by Fred Holden on thread chasing, a 32 page article on tools and jigs and loads more. When you first visit the site it looks like 2 pages, but then a 3rd appears, etc and it goes on for over 20 pages that I have seen and there's probably more (I got fed up looking).
Mod Edit:- Link removed,
I hope this may be of use to turning colleagues.