Hi, I, as actually Samson driver, have now bought the above mentioned scooters to drive with them to work. Unfortunately I can not leave the Simson anymore outside, therefore I just read into the 4 t scooter topic and make an inventory. I noticed how the belt looks from the moped. The previous owner had changed the whole drive once before, but I do not know which KM stand. It is relatively much abrasion in the housing, no idea. I am grateful for any helpful answer!