I assume this is a factory label, but may be applied at port of entry ???
From an 87 Carrera - bottom LH corner of the image states both clearance and tolerance
0.004" +/- 0.002" for Intake and Exhaust
In this instance, the reference to engine temp of at least 90°C may or may not apply to the lash setting - I'll leave that to your individual interpretation of the label (and I'll assume the Tech Spec book would carry some precedence - cold)
