Technical Service Bulletins (TSB) are recommended procedures for repairing vehicles. Technical Service Bulletin is issued when there are several occurrences of an unanticipated MAZDA RX7 problem; it is issed by a MAZDA manufacturer. TSBs can be vehicle-specific or cover an entire product lines. Usually TSB address the specified repair into a step-by-step process. The majority of TSBs are created by the first automotive technician to come up with a MAZDA repair procedure. There are sometimes more than one way to fix a problem, resulting in multiple TSBs for the same problem.