Vantage "Adjust polyvee drive belt tension"

[Tremelune]

The maintenance schedule for my 2007 V8 Vantage has "Check / adjust polyvee drive belt tension, renew if necessary" every 10k miles...I tried to find out how to do this from the factory manual, but it seems it is tensioned automatically, and therefore cannot be adjusted.

How should tension be measured? What is "good"? Am I supposed to change the belt if it's "bad" or what? How bad is bad?

Kinda seems like a copy-paste error from an older manual...

[Tremelune]

So I take it nobody's adjusting tension on their drive belts?

No concern that this is just...randomly in the manual as a maintenance item...?