Join Date: Sep 2009
Location: State College, PA
You click the link he posted above, then click the link for the year of Xterra you have.
Inside that "folder" you'll see all of the PDF's. Each PDF is a section of the owners manual, and the FWD.pdf should be the front section that lists what letter code the other sections are (Example: EM.PDF would be Engine Mechanical).
I know the 2001 version I have, if you download all of the PDF's into the same folder, you can click links built into the PDF that will take you to the page you need even if it's in one of the other sections PDF files (I know this works with Foxit PDF Reader anyhow, and should with Adobe)