From MopedWiki
This page is to help explain the differences between the regular E50, the auto-engaging pedal-start E50, and kickstart E50 engines sometimes found on the Korado and always found on the Magnum X.
Clutches
Kick start clutch (left) and pedal start clutch (right) (photo by: Turd Ferguson)
Pedal start clutch assembly (photo by: Turd Ferguson)
Korado pedal start clutch assembly (photo by: Drew Bell)
Korado three shoe clutch large surface area (photo by: Drew Bell)
Stock Korado three shoe clutch (photo by: Drew Bell)
Magnum X clutch assembly (should be same as any kick start E50) (photo by: Turd Ferguson)
Front view of both parts of the auto-engaging E50 clutch assembly (photo by: orphanage)
Back view of both parts of the auto-engaging E50 clutch assembly (photo by: orphanage)
Clutch Bells
Pedal start clutch bell (photo by: Turd Ferguson)
Korado clutch bell (notice back-cut gear)(photo by: Drew Bell)
Magnum X clutch bell (photo by: Turd Ferguson)
Transfers
Korado/Hero Puch case transfers (photo by: Drew Bell)
E50 transfers for everything but Korado/Hero Puch E50's (photo by: Turd Ferguson)
Electrical
Magical no-lighting-coil stock Magnum X
stator plate (photo by: Turd Ferguson)
Stock E50 Korado CDI stator (photo by: Drew Bell)
Stock Korado E50 CDI box (photo by: Drew Bell)
Main Gears
Main drive gear (same in every E50 other than Korado) (photo by: Turd Ferguson)
Puch regular E50
Korado drive gear (notice back-cut gearing) (photo by: Drew Bell)
Korado engine again (note reverse gearing)
Cranks
Stock Puch non-Korado crank (photo by: Turd Ferguson)
Crank from auto-engaging E50 (photo by: orphanage)