the belt on my focus planet 8 is becoming a bit loose and I thought of tightening it.
The rear wheel setup on the focus is similar to the one in the video from bikefriday below:
What is different is that my bike does not have the adjuster holes to change the tension. There is the big long thread, but at the end there is no hole for an allan key nor is there a hole for a screwdriver to adjust?
Below are the pictures from the side: sideview1
I imagined that the process should be: open the 2 bolts from the outside, then tighten the inside "bolt" on the chainstay. however I don't see a way how to perform the last step, as it is not a bolt nor a screw that i have on the inside chainstay.