Check the valves as early as possable.
The factory sets them tight so they dont make alot of noise that new owner will want to bring them back to the dealer for a check. and as like Larryboy says, they will get too tight in short order...
And like KLRless says, some have never been checked ... ever. But, I'm sure if they did adjust them properly they'd think they just got a new high horse motor installed.
The cam chain tensioner is on the side of the jug, (not the one for the balancer lever. < not trying to say you dont know, it's just mistaken alot)
Pull the center bolt (12mm wrench) watch out for the spring flying out !
take the 2 plunger housing bolts(10mm wrench) out and remove the body.( take a look to see just how far the plunger is extended, it's just knolwedge of how far the cam chain is streched.
You'll see a pawl on the end, push it down and rachet the plunger back into the body. reinstall back on the jug.
When your finished with the valve adjust. put the spring back in and the 12mm bolt. Listen to the sound of the rachet extending (very important! ask Tomatocity why we were up so late that day.)
go ride with confidence !