Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
TB-024-2008
APRILIA MOTORCYCLE: STARTER MOTOR PROTECTION SYSTEM. THE OPERATION INVOLVES REMOVING THE RETENTION RELAY WHICH IS PART 39 OF THE WIRING DIAGRAM (BLUE, YELLOW/RED, PINK/BLACK, YELLOW/PINK WIRES ON THE SHIVER 750. AND THE PART 37, SAME COLORS, ON THE DORSODURO 750. NO MODEL YEARS LISTED. *PE
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.