Don't worry too much about this, wait until the engine is warm, put on your helmet and start riding. If you still hear the noise, start worrying.
One thing to watch though are the valve stem tops. They have a hardened flat surface, but when this is gone, your valve adjusting bolts will round them. Then it's impossible to adjust the valves properly. In other words your feeler gauges won't give you correct info.
------------------
Fred, XTZ660, Holland.
__________________
Fred, XTZ660, Holland.
|