^^^^^^^ These links still work, I used them yesterday to redownload these files.
I have zipped both volumes together and uploaded it to my hosting account should Sergio's site be down. Click here, but beware this is a 215MB file. Do not "Open" it, "Save" it instead, it works a lot better. This thing's 2400 pages!
I hope this one is helpful. I found it online while looking around for Sentra service manuals.
Let me know if this one helps. I found my car's manual here, hopefully you find yours too.
Kudos to owner of the site.