I had my Jawa 130 out last night, and noticed a prominent noise coming from the transmission. I took it home immediately and changed the gearbox oil, which was rather dirty. I do not know when it was last changed. Anyway, that did nothing to quiet the noise. I pulled the CVT cover off and it's definitely coming from in there, what I would assume to be the clutch? It's a click click noise when you move the pedals slowly, and a continuous scraping noise at higher speeds. Here's a video!
Hope someone can tell me what I need to do to fix this!