Whoops! My bad. I meant .04 mm and .10 mm. I'm looking at page 9 of my Saito 72 instruction manual, and it says to adjust the valves to a clearance of .03 mm to .10 mm (.002" - .004"). The valves must be adjusted with the engine cold due to thermal expansion. I like to set my valve clearance at .04 mm. In my opinion, .10 mm is a little bit too loose.

My YS 63 used to have a very choppy idle and didn't sound right, so I decided to check the valve clearances. It turned out one was too tight and the other was too loose. I set them both to .04 mm, and now the engine has a very nice, stable idle.