🏷️ Basic Information Identification Make: Mazda Model: RX-3 Production Years Covered: 1971-1977 Codes Engine Code Primary: 12A (Rotary) Engine Code Alternative: 13B (Rotary, some later models/conversions) 👋 Introduction Market Position Vehicle Segment: Compact/Sports Sedan and Coupe Target Audience: Enthusiasts, restorers, and owners seeking to maintain or repair their classic Mazda rotary vehicles. Competitive Analysis Key Competitors: Datsun (Nissan) Z-cars, Toyota Corolla, Honda Civic, various European compacts of the era. Key Features Unique Selling Proposition: Rotary engine technology, sporty handling, distinctive styling. Manual Value Proposition: Essential resource for preserving and operating unique rotary-powered vehicles. 📋 Manual Details Coverage Areas Manual Type: Service Repair Manual Language: English Format: PDF Page Count Estimated Page Count: Hundreds (Specific number not provided, but implies comprehensive) 📖 Manual Coverage Systems Covered Engine: Rotary Engine (12A), including apex seals, rotor housing, lubrication, cooling, ignition, fuel injection/carburetion (depending on model variant) Transmission: Manual and Automatic Transmissions (including clutch, gearbox overhaul, shifting mechanisms) Drivetrain: Rear-wheel drive system, driveshaft, differential, axles Suspension: Front and Rear Suspension (independent front, leaf spring rear), shock absorbers, ball joints, bushings Brakes: Front Disc Brakes, Rear Drum Brakes, brake lines, master cylinder, brake fluid maintenance Steering: Steering box, tie rods, steering column, power steering (if equipped) Electrical: Ignition system, charging system (alternator, battery), starting system, lighting, gauges, wiring diagrams Fuel System: Fuel tank, fuel pump, fuel lines, carburetor(s) or early fuel injection systems Cooling System: Radiator, coolant hoses, thermostat, water pump, fan Exhaust System: Exhaust manifold, pipes, muffler, catalytic converter (if applicable) Body And Chassis: Body panels, doors, windows, interior trim, chassis structural components Procedures Included Maintenance: Scheduled maintenance tasks, oil changes, filter replacements, spark plug checks, timing adjustments Troubleshooting: Diagnostic procedures for common and uncommon issues, fault diagnosis for engine and electrical systems Repair: Step-by-step repair instructions for all major mechanical and electrical components, rebuild procedures for engines and transmissions Rebuilding: Detailed rebuild procedures for the rotary engine (12A), including rotor apex seal replacement, housing resurfacing, and oil seal replacement. Refurbishing: Guidance on restoring worn components and ensuring proper fitment during assembly. Restoration: Comprehensive information vital for historical vehicle restoration projects. Installation: Instructions for component removal and installation, including specialized tools. Technical Depth Depth Of Coverage: Comprehensive (covers all aspects from basic maintenance to complete engine and transmission rebuilds) Diagnostic Capability: Advanced diagnostics for rotary engine specific issues and electrical system faults. Special Tools: Identification and usage of specialized tools required for rotary engine servicing and other repairs. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable, facilitating quick information retrieval. Print Quality Image Clarity: High-quality PDF generally ensures clear diagrams and text. Scalability: PDF format allows for zooming in on detailed diagrams and specifications. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Two-Rotor Wankel Rotary Engine Displacement Cc: 1146 cc (1.2 L) for 12A engine Engine Displacement Ci: 70 cu in (1.2 L) for 12A engine Performance Horsepower Hp 12A: Approx. 90-100 HP (depending on tuning and emissions controls) Torque Lb-Ft 12A: Approx. 100-110 lb-ft (depending on tuning and emissions controls) Redline Rpm: Approx. 6000-7000 RPM (varies) Fuel System Carburetion: Typically Twin Hitachi downdraft carburetors (e.g., HJG 38) or Solex, some later models/markets may have early injection. Fuel Type: Unleaded gasoline (91 Octane recommended, higher if available) Oil Type: API SF or SG, SAE 10W-30 or 20W-50 (specific Mazda recommendations may vary) Lubrication Oil Capacity Quarts: Approx. 5.5-6.5 quarts (including filter) - Consult manual for precise capacity. Cooling System Coolant Type: Ethylene Glycol based coolant, 50/50 mix with distilled water. 🔧 Transmission Standard Transmission Type Standard: 4-speed manual transmission Optional Transmission Type Optional: 3-speed automatic transmission Features Transmission Fluid Type: Dexron II or equivalent for automatic; Manual transmission fluid API GL-4 SAE 75W-90 or 80W-90. Clutch Type: Dry single plate clutch (manual transmission) 📐 Dimensions Exterior Body Styles: 2-door Sedan, 2-door Coupe, 2-door Hardtop Coupe (RX-3), 2-door Rotary Coupe (RX-2) Wheelbase Inches: Approx. 97.0 - 98.4 inches (varies by model and body style) Length Inches: Approx. 160 - 170 inches (varies by model and body style) Width Inches: Approx. 63 - 65 inches (varies by model and body style) Height Inches: Approx. 52 - 54 inches (varies by model and body style) Weights Curb Weight Lbs: Approx. 2100 - 2400 lbs (varies significantly by body style and equipment) Gross Vehicle Weight Rating Gvwr Lbs: Typically around 3000-3200 lbs (consult specific vehicle plate) 🛡️ Safety Features Ratings Crash Test Ratings: N/A (Vehicles from this era were not subject to standardized government crash testing as we know it today.) Active Features Braking System: Front disc, rear drum brakes are standard. Power assist may be optional. Seatbelts: Lap and shoulder belts (front), lap belts (rear) depending on configuration and market. Passive Features Structural Integrity: Body-on-frame construction (chassis) with integrated body shell. 💡...