I am getting a lot of different thoughts on when to do the first adjustment and what exactly should be done. According to the manual after the break in period they should be adjusted every 500k. The service mgr. at one dealership told me that he was seeing the valves tighten up on new bikes. This makes them hard to start when hot. I did the break in period with the throttle stop in, then removed it and cut it down to size to allow full throttle. Other than that I am on the 3rd oil change and the bike still runs good. However on the last ride I think I was hearing a tapping in the valves at high speed on a long straight dirt road. The manual is very detailed about how to remove the valves and valve springs checking them with surface gauges etc. Since I don't have valve spring clamps or a surface gauge I guess I'm SoL If you've done yours what did you see, did they require adjustment. How often do they need to be done. Do you need any special tools. How hard is it Can anyone list a step by step procedure for those of us that have never done valves on the new generation 4 stroke.