Build starter 4.2 l

I'm desperating trying to expand the starter. I've been trying to reach the 10-inbus, probably above the starter, for days and hours from the beginning (that's correct). I looked at the area with the endoscope today, but I don't really see a suitable screw.
Krummer's still in there, so is the engine bearing. With regard to the crusher, an extremely poorly accessible mother is sucked around, which prevents the expansion. The Krummer prevents (in my opinion) the expansion of the engine bearing with the carrier, which is perhaps in the way!?.
Of course I have already searched the forum and the rep guide, but unfortunately I find nothing sensible about this.
Does the carrier of the engine bearing have to go out to reach the 10 inbus screw? ... or I'm completely plempious. The photo in the appendix shows the area without starter from the Rep Guide. Where's a 10-inbus bolted up there?