Japanese Translator for SR ECU

[Mr.Doback]

Hopefully someone here can translate this for me, trying to understand what all is said for the diagnostic mode.

I understand how to pull codes, but I was hoping to learn if the dotted line or anything in Japanese explains the O2 diagnostic mode. I have a CEL that flashes irregularly and I feel it is because it is reading Lean/Rich conditions. Any help would be great! Thanks

http://website.lineone.net/~jon_ed/ECU_Back.jpg

[KoukiMonsta]

The characters around the screw used to pull codes, reading in clockwise starting at the bottom.

low, high, and past dotted line 'up to you'

not sure I understand, though I am well aware of how to pull codes.

the left side talks about using caution.