How do I loosen this screw?

[anteva2]

Hello everyone, does anyone know what type of screw is the one that is in the plastic part of the end of the Vboot servo cable?
I need to tighten the cable and I can't find the exact head that fits the screw... is it Tor? number? Thank you all

 

[one2dmax]

The adjustment screw in the small black box of the servo? That's a small allen but a torx may work as well.

 

[anteva2]

Thank you so much. The idea is to loosen without removing carbs, on the right side, but I can't find the correct number. I will have to buy some glasses with more magnification. Damn plesvicia and damn years!!