One more doubt about the procedure you have pointed to:

"3) Detach the purge line at the electric switchover valve and seal. On my car, this valve is mounted on the inner wall of the left fender, adjacent to the ABS controller. The subject line is black tubing with white stripes."

What is that? Is it related to automatic transmission? If so, do I have to remove something if I have manual transmission?

Best regards and sorry for so many questions.