My Puch Maxi Plus is 1 speed automatic. Here is a view of the clutch case and swing arm. Design is so much different from the 103. It's built like a real mini bike actually.
When I drained the transmission, I had less than a big scoop of oil.
I will have to disassemble the whole engine since my rod gaskets seem roached. That is why I guess I found so much carbon deposit in top end.