This manual covers the Mazda B6-DOHC and BP-DOHC engines, designed with DOHC (Dual Overhead Camshaft) technology. These engines represent a commitment to robust engineering and reliable performance, intended for a wide range of applications where efficiency and power are paramount. Their intricate design and advanced features ensure a superior driving experience and long-term durability, making them a notable choice in their class. This comprehensive Service Repair Workshop Manual in English provides detailed information essential for the maintenance and repair of these Mazda engines. It includes in-depth coverage of engine body, fuel system, cooling system, electrical system, alternator, and regulator. Furthermore, the manual offers a troubleshooting guide, maintenance checklists, servicing specifications, tightening torques, disassembling and servicing procedures, special tools, wiring schematics, diagrams, and general precautions. This resource is designed to assist owners, mechanics, and technicians in effectively managing and servicing their vehicles.