I just checked my valves for the first time following the How-To off of this site. Intakes were both fine. Exhaust valves were both .1mm to .12mm when measured following the guide. I checked both of the exhaust valves again with the point of the camshaft lobe perpendicular (away) from the face of the shims, and they were within spec. If I changed shims, the minimum clearance when rotating through the constant radius portion of the cam lobe would be less than .03mm.
I did a search and have seen this question asked a few times before, but the only reply I could find was "because the manual says so." Maybe I'm way off, but I'm not buying that. It doesn't seem logical to check all the valves at a different angle. Are the two camshaft positions suggested in the manual chosen arbitrarily, just for convenience? Thoughts?
Sorry to waste everyone's time if this is all covered in the "valve adjustment video"- all I have is dial up at home.
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Noob fact of the week-The "ON" position of the fuel tank valve is NOT at the full CCW position. Why Suzuki, why??
Welcome!
Better too loose, than too tight. Better fuel economy that way, too.
The two positions are choosen as easy pionts of reference on the cams and trigger. You could do it your way. The one thing that is nice about shim adjustment is that you have a range to be within spec.