If You want a actual book/manual I've seen them on EBay $25-35 or you can find it on this sight under WiKi at top of the page
first post here, but i just got a FE650e in supermoto trim yesterday
anyways, i had been searching around a bit before buying it (off a friend) so might this be of help?
http://www.husabergshop.se/documents/00670_%C4gar_Handbok.pdf