If you go to
http://www.servicemotoguzzi.com/ and hover over "Download area" then select "Use and maintenance manuals" you can open all the Norge manuals in pdf format and should find the info you are looking for.
In general however, the servicing in rather easily completed by the owner if so desired. Checking/setting valve clearance every 6000 miles is a simple procedure (less than an hour) and fluid changes(engine, gearbox, CARC) are simple as well. The dealer does have a tool called the AXONE which interfaces with the fuel injection computer and allows manipulation of those settings. My Breva 1100 has not been "AXONE'd" yet but runs pert near perfectly from the factory so I do not see a need for the AXONE treatment yet.
If you want a lot more info on the Norge, go here....
http://www.phpbbforfree.com/forums/mggriso.html?c=1&mforum=mggriso
