Regardless of what Yamaha's owner booklet says (a full service should be done every 6000 miles or 10'000 kilometres) however and this depends very much on how you use your bike, if you are a "weekend only / fair weather rider then that every 6000 miles / 10000 km is ok. But those of us who go to work and back and use it every day for both necessity and leisure, basically have only come off the bike to eat and sleep i.e. have realized that the oil wears out pretty damn quick, and therefore we need an interim oil & oil filter change at least every 3000 miles.

if you are in between a fair weather rider and a frequent rider the best thing for you to do is check the oil level often and if you see it coming down at every 2000 miles then change it at 3000 for a fresh 2.9 litres and oil filter too. Believe me the heart of these bikes longevity is the correct oil level / quality, ignore that and you will be looking at an expensive engine repair / rebuilt.

Good luck