Change / re-enter PIN code

Hello, I bought a Dyna FXDC built in 2008 used. The technique with the electronic bowl that you only need to carry with you and the machine is ready to drive if you are closer than about 8 m is working quite well. I live in Spain, the dyna is on the name of a friend in Germany to gelqassen and my Spanish is also not so good. That’s why I would like to know exactly how I can work with the PIN code when the FB times does not go. The harley people here say: all at all no problem, if that does not bring the that already i.o. but I would like to know for myself how this can be done !!!!!! In the annex the info from another forum. Does someone have a better ??? Have just concerns that – if I can not manage – the dyna stands on my yard but no longer runs. Thanks & Greetings micha