Just checked the Owner's manual. My bike is due its 6000 mile service and I thought I'd have a look as this thread has brought the subject up. The manual does not say replace the air filter, does not say replace the spark plug and does not say replace the OIL filter!!!!!!!!!!!!!!!
This is why I have my own preferred mechanic who can do the service and still maintain the warranty. I know that he will do the right thing and replace these important items as well as give the bike a thorough once over. Interestingly there is no mention of cush drive rubbers either, I know that it is only an owners manual and as such not that detailed but if I thought that a dealer would only do the items as specified I would be horrified.
I have never in my life done and oil change and not replaced the filter, similarly I always keep the last spark plug as a spare.
Also as my mechanic is an independant, I know he will not rip me off as he knows that I will be back!