I did check te clearance of the valves at almost 12000Km (8000ml) and they are in spec.
It was not recomended bij the maintenancemanual but i wanted to be sure.
I had a FZ750 who needed first checking at 42000Km (26000ml) , but with 5000 miles to go it started very poor, the clearance was too thight, and on some valves no clearance.
So now i check it every winter.