It depends on who set them up at Yamaha. For instance my 2007 450F dirtbike was WAY wrong from the start. It was half of what it should have been. I would check them for sure now after seeing it on the bike after break in and then 25 hours just to see. After that I would do like 50 hours or so. They are all hand set...no machine does this.
Again ...I'm doing the Raptor 700 and the 2 350's I own Sunday and will see. I wish I would have done it right away.
my intake valves were real tight, didnt have any play at all. i had the bike 6 months before i adjusted the valves w/ alot of hours. the exhaust were just a little loose.
def. sounds like a good idea to check them not long after you get your bike I heard a few ppl saying they found them to be tight from factory