every garage i have rang told me they need to put my bike on a diagnostics, now i have 1 but dont kno how to use it?
There will be a plug near your battery to plug the diagnostics in http://www.gilera.fi/files/gilera/varaosakirjat/Gilera_Runner_PureJet_eng.pdf page 37
piaggio have there own suprise suprise and its linked to the dealers computer where it tells you everything