The Mazda RX2, produced from 1970 to 1978, represents a significant chapter in automotive history, showcasing Mazda's pioneering spirit with its innovative rotary engine technology. Available as a stylish 2-door coupe or a practical 4-door sedan, the RX2 offered a unique driving experience characterized by smooth, high-revving performance. Its compact dimensions and nimble handling made it a distinctive competitor in its class. This particular model, chassis code AP17, was key in establishing Mazda's global reputation for engineering excellence and sporty, engaging vehicles, particularly noted for its advanced rotary powertrain for the era. This comprehensive workshop service manual provides detailed guidance for the maintenance and repair of the Mazda RX2 across all its production years. It covers essential areas including the intricacies of the rotary engine's disassembly, assembly, and lubrication, as well as drivetrain, suspension, braking, and electrical systems. The manual also details routine maintenance procedures, diagnostic troubleshooting, and specific repair techniques, including the use of specialized tools. Its scope is designed to empower owners, mechanics, and technicians with the knowledge necessary to preserve the performance and longevity of this classic Mazda. 🏷️ Basic Information Identification Make: Mazda Model: RX2 Generation: First Generation (pre-facelift) Chassis Codes: AP17 Body Styles: 2-door Coupe, 4-door Sedan 👋 Introduction Market Position Market Position: The Mazda RX2 was a pivotal model for Mazda, establishing the brand's reputation for innovative rotary engine technology in a stylish, compact package. It competed in the sporty compact segment against vehicles like the Toyota Corolla Levin/Sprinter Trueno and Datsun (Nissan) 1200/1600. Competitive Analysis Competitive Analysis: Offered a unique selling proposition with its smooth-revving, high-revving rotary engine, providing a distinct driving experience compared to conventional piston engines. This manual addresses the specific maintenance and repair needs of this unique powertrain. Key Features Key Features: Rotary engine technology, distinctive styling, nimble handling, sporty performance for its era. 📋 Manual Details Coverage Areas Applicable Years: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Manual Type Type: Workshop Service Manual (WSM) Language Language: English Format Format: Digital (likely PDF, though physical reproduction is common for vintage manuals) 📖 Manual Coverage Systems Covered Engine Systems: Rotary engine theory, disassembly, assembly, lubrication, cooling, ignition, fuel, exhaust, emissions control Drivetrain Systems: Clutch, manual transmission, driveshaft, rear axle assembly, differentials Suspension Steering: Front suspension (struts, control arms, bushings), rear suspension (leaf springs, shock absorbers), steering gear, power steering system (if equipped) Braking Systems: Front disc brakes, rear drum brakes, hydraulic system, parking brake Electrical Systems: Battery, charging system (alternator), starting system, lighting, instrumentation, ignition switch, wiring diagrams, fuses, relays Body Chassis: Body panel removal/installation, frame, doors, windows, interior trim, seats, bumpers, corrosion protection Heating Ventilation Ac: HVAC system operation, heater core, blower motor, ducting (AC likely optional/dealer installed) Procedures Included Maintenance: Oil changes, filter replacements, spark plug indexing/replacement, coolant flushes, belt tensioning, brake adjustments, lubrication points Diagnostics: Troubleshooting engine performance issues (e.g., apex seal wear, carburation problems), electrical fault finding, brake noise diagnosis, suspension component wear Repair Rebuild: Engine rebuild procedures (rotary specific), transmission overhaul, brake caliper/wheel cylinder servicing, starter/alternator replacement, suspension component replacement Special Tools: Identification and usage of specialized tools required for rotary engine maintenance and repair Technical Depth Depth: Comprehensive, suitable for professional mechanics and skilled DIY enthusiasts. Covers detailed disassembly, reassembly, and calibration procedures. 📊 Manual Specifications File Format File Format: Likely PDF, optimized for digital viewing and printing. Searchable text functionality is a common feature for well-converted manuals. Print Quality Print Quality: High resolution scans of original factory documentation, ensuring clarity of diagrams and text. Binding Type Binding Type: N/A (for digital format). If a physical reproduction, typically spiral-bound or comb-bound for lay-flat usability. Paper Type Paper Type: N/A (for digital format). Original manuals were typically printed on durable paper stock. ⚙️ Engine Specifications Primary Engine Engine Type: Rotary (Wankel) Engine Model: 12A Engine Displacement Cc: 1146 cc (equivalent displacement for taxation purposes) Engine Description: Two-rotor, naturally aspirated, peripheral port or side exhaust port configurations depending on year/market. Performance Horsepower Gross Ps: Approx. 110-120 PS (varies by market and emissions regulations) Torque Gross Lb Ft: Approx. 110-125 lb-ft (varies) Fuel System Carburetion: Twin-choke downdraft carburetor (e.g., Hitachi/Weber type) Fuel Type: Unleaded gasoline (octane rating appropriate for the era, likely 91 RON or higher recommended) Oil System: Pressurized lubrication system with integrated oil cooler. Premixing of oil with fuel for apex seal lubrication is NOT standard on the 12A from the factory; it uses a separate oil injection system. 🔧 Transmission Standard Transmission Type: 4-speed manual transmission Optional Transmission Type: 3-speed automatic transmission (less common, often designated with an 'A' suffix, e.g., RX2 Deluxe Auto) Features Clutch Type: Dry, single-plate diaphragm spring clutch Manual Gear Ratios: Specific ratios will be detailed in the manual, typically varying slightly between coupe and sedan models. 📐 Dimensions Exterior Length Mm: Coupe: ~4120 mm, Sedan: ~4125 mm Width...