I just make sure I keep a receipt of when I buy filter and oil. I then take a picture of the receipt right next to the odometer to show the mileage of then I did the change. Is it 100% foolproof documentation, no, but it is something.I just looked at the service schedule @dbrain posted. I put about 1300 km on the bike in 9 days of ownership. I know this is likely to go down as the novelty wears off and because I have moved the bike to the cottage where I will only be riding on weekends.
Even so, it's clear that it will quickly become expensive if I don't learn how to do some things myself. I just want to make sure I don't jeopardize my warranty. Thanks all again !