I use my bike everyday and it has been running fine until the other morning when I went to start it and the starte rmotor turns but it doesn´t fire up ? I´ve changed the plugs for new ones,I´ve checked the coils with a multimeter and they seem ok, I´ve also checked the pickup coil and that also is ok,in the manual it says to remove the DIODE from the wireing harness and check with multimeter, My first question is does anyone know where to find this DIODE ? and does anyone have any other ideas as to what the problem could be.