Do you think you could ask your friend to tell you what the owner's manual suggests for valve inspection interval? thanks
I just traded my 08 KLR for the 08 Versys, and I will say that I am very impressed with the V. I had nothing against the KLR but I have kind of lusted after the V since I first saw it.
I ride a lot of dirt and gravel roads, local commuting, some mountain twisties, not too much on the interstate, only what I have to do to get to the back roads.
This Versys is much better on the gravel and two track roads than I hoped for. I won't bore you with a lot of details, but as much as I liked my KLR, I am very happy with the Versys. It handles great, is very quick, makes great torque down low, and feels like a rocket compared to the KLR.
The tire selection for off road types isn't too good just yet, but should get better. The windshield sucks, but I have changed the shield on every bike I have ever owned so nothing new there.
All in all, I think this Versys is a super handling little bike , puts out almost 60 hp at the wheel , almost 42 lb's torque . I am happy I made the trade, although I worried if I was making a mistake.
To answer your question my manual says, if I am reading it right, that valve inspection is at 15,000 miles, or 24,000km's