The Mazda RX2, produced from 1970 to 1978, represents a significant chapter in automotive history, particularly for its pioneering use of Mazda's signature rotary engine technology. Available in sedan (S102) and coupe (S124) body styles, this compact sports car offered a unique driving experience characterized by its smooth, high-revving 1146cc 12A rotary engine, delivering approximately 110-130 horsepower. Its design philosophy emphasized driver engagement and agile handling, making it a distinctive alternative to its piston-engined competitors of the era. The RX2's sporty appeal and innovative powertrain established Mazda's reputation for engineering excellence and a commitment to alternative engine designs. This comprehensive Factory Service Repair Manual covers the Mazda RX2 models from 1970 through 1978. It provides in-depth information across all major vehicle systems, including detailed procedures for routine maintenance, engine (rotary 12A) and drivetrain repairs, chassis and suspension servicing, and electrical system diagnostics. The manual is designed to assist owners, technicians, and mechanics in understanding, maintaining, and repairing their RX2, ensuring optimal performance and longevity. It includes essential technical specifications, troubleshooting guides, and clear explanations of complex procedures, making it an indispensable resource for preserving the unique characteristics of this rotary-powered classic. 🏷️ Basic Information Identification Make: Mazda Model: RX2 Model Code: S102, S124 Generation Generation: First Generation Codes Chassis Codes: S102 (Sedan), S124 (Coupe) 👋 Introduction Market Position Market Segment: Compact Sports Coupe & Sedan Competitive Analysis Key Competitors: Toyota Corolla Levin, Datsun 1200/1300, Honda Civic (early generations) Key Features Unique Selling Proposition: Mazda's signature rotary engine technology, offering a unique driving experience and compact power unit. Design Philosophy: Sporty yet practical design, focusing on driver engagement and agile handling. 📋 Manual Details Coverage Areas Years Covered: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Page Count Estimated Page Count: Approximately 500+ Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Rotary Engine (12A), Lubrication, Cooling, Fuel, Ignition, Exhaust Drivetrain Systems: Transmission (Manual & Automatic), Clutch, Driveshaft, Differential, Axles Chassis Systems: Suspension (Front & Rear), Steering, Brakes (Front Disc, Rear Drum) Electrical Systems: Wiring Diagrams, Lighting, Instrumentation, Starting & Charging, Ignition Switch, Fuses & Relays Body And Interior: Body Panels, Doors, Windows, Seats, Trim, HVAC System, Wipers Procedures Included Maintenance Procedures: Routine Inspections, Oil Changes, Filter Replacements, Spark Plug (Igniter) Gap Adjustment, Apex Seal Inspection Repair Procedures: Engine Rebuilds (Rotary), Transmission Overhaul, Brake System Repairs, Suspension Component Replacement, Electrical Component Diagnosis & Repair Troubleshooting: Diagnostic Charts, Symptom-Based Troubleshooting Guides, Common Problem Identification Technical Depth Technical Depth: Comprehensive (from basic maintenance to full engine and transmission rebuilds) Diagnostic Capabilities: Detailed electrical schematics, mechanical specifications, and diagnostic procedures for all major systems. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans, clear text and diagrams Binding Type Binding Type: N/A (Digital) Paper Type Paper Type: N/A (Digital) Searchability Searchability: Searchable text for quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Type: Mazda 12A Rotary Engine (Wankel) Engine Designation: 12A Displacement: 1146cc (Two Rotor) Performance Horsepower Output: Approx. 110-130 hp (depending on variant and emissions controls) Torque Output: Approx. 120-135 lb-ft Fuel System Fuel Delivery: Carbureted (e.g., Hitachi, Mikuni twin-choke) Engine Components Rotor Housing Material: Chromium-plated aluminum alloy Apex Seals: Crucial component for sealing; material typically carbon or ceramic composite. Manual details inspection and replacement. 🔧 Transmission Standard Standard Transmission: 4-Speed Manual Optional Optional Transmission: 3-Speed Automatic (e.g., Mazda 'J' transmission) Features Clutch Type: Dry single plate Gear Ratios: Detailed in manual for both manual and automatic transmissions. 📐 Dimensions Exterior Wheelbase: Approx. 98.4 inches (2499 mm) Length: Approx. 161.6 inches (4105 mm) Width: Approx. 63.0 inches (1600 mm) Height: Approx. 52.4 inches (1331 mm) Weights Curb Weight: Approx. 2100-2300 lbs (950-1040 kg) Gross Vehicle Weight: Specified in manual for load capacity. Wheels And Tires Wheelbase: Approx. 98.4 inches (2499 mm) Wheel Size: Typically 13-inch or 14-inch Bolt Pattern: 4x110 Tire Size: e.g., 175/70R13, 185/70R13 🛡️ Safety Features Ratings Crash Test Data: Limited official data available for this era; manual focuses on repair and maintenance, not NHTSA ratings. Active Features Braking System: Front Disc, Rear Drum Steering System: Recirculating Ball Passive Features Seatbelts: Lap and shoulder belts (front), lap belts (rear) depending on configuration. Body Construction: Unibody construction with crumple zones designed for the era. 💡 Technology Features Infotainment Audio System: Basic AM/FM radio, often with an optional cassette player. Aftermarket upgrades common. Instrument Cluster: Speedometer, tachometer (redlined at ~7000-7500 RPM for 12A), fuel gauge, temperature gauge, oil pressure warning light. Driver Assistance Antilock Brakes: Not available on standard models of this era. Power Steering: Optional on some trims, standard recirculating ball system. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles (5,000-8,000 km) or 6 months. Manual specifies exact intervals. Filter Replacement: Oil filter with every oil change. Air filter...