The Mazda RX3, also known by its model codename S102, represents the First Generation of this compact sports car, produced from 1972 through 1978. Available in both stylish coupe and practical sedan body styles, the RX3 distinguished itself with its innovative Mazda Rotary (Wankel) engine, specifically the 12A variant. This rear-wheel-drive vehicle offered a lightweight construction and a unique, high-revving driving experience, positioning it as an enthusiast-focused option against contemporaries like the Toyota Corolla Levin and Datsun 240Z. Its design and engineering reflected the era's automotive trends while incorporating Mazda's pioneering rotary technology, making it a memorable entry in automotive history.

This comprehensive factory service manual provides essential information for the maintenance and repair of Mazda RX3 models from 1970 to 1978. It covers all major systems, including detailed procedures for the rotary engine, drivetrain, suspension, steering, braking, and electrical systems. Owners and technicians will find step-by-step instructions for routine maintenance, diagnostic troubleshooting, and complete repair procedures, along with technical specifications and torque values. The manual's scope ensures that all aspects of the vehicle, from basic fluid changes to complex engine rebuilds, are addressed, serving as an indispensable resource for preserving the RX3's unique performance and heritage.