If this is for your initial maintenance where it calls for adjustment I wouldn't do it. 99% of owners have no problems without adjusting them until you actually get to the point that they actually need adjustment. This is on the 700 engine and I had the same experience on the older 400.
But if you want to adjust them here are the clearances for the 700 engine, I have no idea on the 450
Intake 00.10-00.20mm 0.0039-0.0079 inches
Exhaust 00.22-00.32mm 0.0087-0.0126 inches
Both are done cold