🏷️ Basic Information Identification Make: Mazda Model: RX3 Generation Codes: S107A, S124A, S132A (internal chassis codes) 👋 Introduction Market Position Segment Placement: Compact sports coupe/sedan, aimed at performance enthusiasts seeking a distinctive driving experience. Competitive Analysis Key Competitors: Datsun 240Z, Toyota Corolla Levin/Sprinter Trueno (AE86 precursor), Ford Escort RS, various European small sports cars of the era. Key Features Unique Selling Points: Rotary engine technology, distinctive styling, agile handling, relatively affordable performance. 📋 Manual Details Coverage Areas Manual Years Covered: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Page Count Estimated Pages: 800-1200 (typical for comprehensive workshop manuals of this era) Manual Type Manual Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF (Downloadable) 📖 Manual Coverage Systems Covered Engine Systems: Rotary engine theory, lubrication, cooling, fuel delivery (carbureted), ignition, emissions control (early systems), engine disassembly/assembly, troubleshooting Drivetrain Systems: Clutch operation, manual transmission disassembly/assembly/adjustment, rear axle servicing, driveshaft inspection and repair Chassis Systems: Front and rear suspension (independent front, leaf spring rear), steering system diagnosis and repair, brake system overhaul (front discs, rear drums typical), wheel alignment specifications Electrical Systems: Wiring diagrams, lighting, ignition switch, starter motor, alternator, battery, gauges, horn, fuses and relays, troubleshooting electrical faults Body And Trim: Door mechanisms, window regulators, seat adjustment, interior trim removal/installation, exterior trim, panel gaps Procedures Included Maintenance Procedures: Scheduled maintenance (oil changes, filter replacements, spark plug checks, belt adjustments), fluid level checks, lubrication points Repair Procedures: Engine rebuild (rotary apex seals, rotor housing inspection), transmission rebuild, brake caliper/wheel cylinder overhaul, carburetor rebuilding, suspension component replacement Troubleshooting Diagnostics: Step-by-step diagnostic charts for common engine, electrical, and mechanical problems Technical Depth Depth Of Coverage: Comprehensive: Covers from basic maintenance to complete engine and transmission overhauls, including torque specifications, clearances, and diagnostic procedures. 📊 Manual Specifications File Format PDF Quality: High-resolution scans, searchable text (OCR'd) Print Quality Print Readability: Optimized for printing, clear diagrams and text Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Rotary (Wankel) Engine Engine Displacements: 571 cc x 2 rotors (1142 cc total displacement equivalent), 654 cc x 2 rotors (1308 cc total displacement equivalent) Engine Code Examples: 12A (early, 571cc), 12A (later, 654cc) Performance Horsepower Range: 80-110 hp (net) depending on year and emissions equipment Torque Range: 75-95 lb-ft (net) depending on year and emissions equipment Fuel System Fuel Delivery: Single or dual downdraft carburetors (e.g., Hitachi/Aisan, Mikuni Solex) Fuel Type: Unleaded gasoline (as mandated by emissions regulations during its production run) 🔧 Transmission Standard Transmission Type Standard: 4-speed manual transmission Optional Transmission Type Optional: 3-speed automatic transmission Features Clutch Type: Dry single plate clutch 📐 Dimensions Exterior Body Styles: 2-door Coupe, 4-door Sedan, 5-door Wagon (RX3 Station Wagon), 2-door Rotary Sports Coupe (R100 often associated, but RX3 had its own variants) Wheelbase: Approx. 95.5 inches (2425 mm) Length: Approx. 161.8 - 165.7 inches (4110 - 4209 mm) depending on body style Width: Approx. 63.8 inches (1620 mm) Height: Approx. 53.0 - 54.7 inches (1345 - 1390 mm) depending on body style Weights Curb Weight Range: Approx. 2000 - 2350 lbs (907 - 1066 kg) Wheel Bolt Pattern: 4x110 mm 🛡️ Safety Features Ratings Crash Test Data: Limited official crash test data available from this era, however, typical safety features for the period include padded dashboards and seatbelts. Active Features Braking System: Front disc brakes, Rear drum brakes Passive Features Seatbelts: Standard lap and shoulder belts (front), lap belts (rear) 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with optional cassette player Driver Assistance ABS Availability: Not available Power Steering: Optional on some models Connectivity Connectivity Features: None (pre-digital era) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles (4,800 km) or 3 months Spark Plug Inspection Interval: Every 6,000 miles (9,600 km) Air Filter Replacement: As needed, typically every 12,000 miles (19,200 km) or annually Fluid Specifications Engine Oil Specification: API SF or SG, SAE 10W-30 or 10W-40 recommended. Consult manual for exact viscosity based on temperature. Transmission Fluid Manual: API GL-4, SAE 75W-90 or 80W-90 gear oil Transmission Fluid Automatic: Dexron II (or equivalent) Coolant Type: Ethylene glycol-based antifreeze, 50/50 mix with distilled water Known Issues Rotary Engine Wear: Apex seal wear, rotor housing wear, oil seal failure leading to compression loss and increased oil consumption. Carburetor Issues: Vapor lock, fuel delivery issues, vacuum leaks, idle control problems. Electrical Gremlins: Corroded wiring connectors, aging insulation, failure of voltage regulators and ignition components. Rust And Corrosion: Common in older vehicles, particularly wheel arches, sills, and floor pans. 📚 Vehicle History Brand Heritage Mazda Rotary Legacy: Mazda's pioneering development and mass production of the Wankel rotary engine, starting with the Cosmo Sport and continuing with models like the R100 and RX series. Model Evolution Rx3 Development: Successor to the...