Conny Wallmark tips on mounting in picture 3. A little small. Requires a lot of force to get on but it is possible. Try to heat first in hot water but do not boil!
Instructional video
Brand: Puch
Florida/MV50
Brand: Zündapp
KM 48/50561 R50/RS50434 M50 Bergsteiger448 CS50448 CX50540 KS50441 C50 Super442/444/446/447/460/510/515/517/529/530/Combinette/Falconette -1966
Brand: Kreidler
Flory