🏷️ Basic Information Identification Make: Mazda Model: RX3 Model Codename: S102 Generation Generation Designation: First Generation Codes Chassis Codes: S102A (Sedan), S102C (Coupe) 👋 Introduction Market Position Positioning: Compact sports coupe/sedan with unique rotary engine technology, targeting enthusiasts and drivers seeking distinctive performance. Competitive Analysis Competitors: Toyota Corolla Levin/Sprinter Trueno, Datsun 240Z (though a class above), Nissan Sunny, Mitsubishi Lancer. Key Features Distinguishing Features: Rotary engine, rear-wheel drive, stylish coupe and practical sedan body styles, lightweight construction. Value Proposition Manual Value: Essential resource for DIY mechanics and restorers to maintain and repair the unique Mazda rotary engine and the rest of the vehicle. 📋 Manual Details Coverage Areas Covered Years: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Covered Regions: Global (assuming factory service manual content) Covered Body Styles: All (Sedan, Coupe, potentially Wagon if applicable to RX3 series) Page Count Estimated Page Count: Approximately 800-1200 pages (typical for comprehensive factory service manuals of this era) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Downloadable Digital Format (likely PDF) 📖 Manual Coverage Systems Covered Engine Systems: Rotary Engine (Wankel), Lubrication System, Cooling System, Fuel System (Carburetion), Ignition System, Exhaust System Drivetrain: Clutch, Manual Transmission, Driveshafts, Rear Axle Assembly Suspension Steering: Front Suspension (MacPherson Strut), Rear Suspension (Leaf Spring), Steering System (Recirculating Ball), Wheel Alignment Specifications Braking System: Front Disc Brakes, Rear Drum Brakes, Brake System Hydraulics, Parking Brake System Electrical System: 12V Electrical System, Battery, Alternator, Starter Motor, Lighting System, Fuses, Wiring Diagrams, Instrumentation Body Chassis: Body Panels, Doors, Hood, Trunk, Interior Trim, Chassis Components, Corrosion Protection Procedures Included Maintenance Procedures: Oil Change, Filter Replacement, Spark Plug (Apex Seal/Gasket) Checks, Ignition Timing Adjustment, Carburetor Tuning, Cooling System Flush, Brake Fluid Flush, Lubrication Points Diagnostic Procedures: Troubleshooting charts for engine performance, electrical issues, starting problems, cooling system malfunctions Repair Procedures: Engine rebuild (rotary specific), transmission overhaul, clutch replacement, brake component replacement, suspension component replacement, electrical component repair/replacement Adjustment Procedures: Carburetor idle speed and mixture adjustment, ignition timing, clutch pedal free play, parking brake adjustment Technical Depth Depth: Comprehensive (from basic maintenance to full engine and drivetrain rebuilds) Detail Level: Detailed step-by-step instructions, torque specifications, special tool requirements, exploded views, diagnostic flowcharts 📊 Manual Specifications File Format Digital Format: PDF (Searchable text and high-resolution images likely) Print Quality Image Resolution: High-resolution, clear diagrams and photographs Binding Type Physical Binding: N/A (Digital Download) Paper Type Physical Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Mazda Rotary (Wankel) Engine Engine Designation: 12A Rotor Displacement: 573cc per rotor (total 1146cc equivalent reciprocating displacement) Configuration: Two-Rotor, Naturally Aspirated Performance Horsepower Early Models: Approximately 90-105 hp (depending on specific market and emissions regulations) Torque Early Models: Approximately 100-115 lb-ft Redline Rpm: Around 6500-7000 RPM Fuel System Fuel Delivery: Single or Twin Carburetor (e.g., Hitachi, Mikuni, Solex) Fuel Type: Unleaded Gasoline (though early models might have been designed for leaded and require additives or valve seat modifications for unleaded) Lubrication System Oil Type: Specific Rotary Engine Oil (e.g., SAE 20W-50 or 10W-30, consult manual for exact spec). Separate oil metering pump injects oil into the combustion chamber for apex seal lubrication. Cooling System Type: Water-cooled Coolant Capacity: Approximately 5-6 liters (consult manual) 🔧 Transmission Standard Type: 4-speed Manual Transmission Optional Type: 3-speed Automatic Transmission Features Drive Layout: Rear-Wheel Drive (RWD) Transmission Fluid Type: GL-4 Gear Oil (e.g., SAE 80W-90, consult manual for exact specification) 📐 Dimensions Exterior Wheelbase: Approximately 2400 mm (94.5 inches) Length: Approximately 4050-4150 mm (159.4-163.4 inches) Width: Approximately 1600 mm (63 inches) Height: Approximately 1350-1370 mm (53.1-53.9 inches) Weights Curb Weight: Approximately 950-1100 kg (2094-2425 lbs) depending on body style and options Wheels Tires Wheel Bolt Pattern: 4x110 mm Standard Tire Size: 155SR13 or 165/70SR13 (common sizes, consult manual for exact fitment) 🛡️ Safety Features Ratings Crash Test Data: No formal crash test data from modern agencies available for this era. Design likely reflected contemporary safety standards of the early to mid-1970s. Active Features Braking System Features: Front Disc Brakes, Rear Drum Brakes, Dual Circuit Hydraulic System Passive Features Restraints: Seat belts (likely lap belts for front, lap belts for rear; shoulder belts may have been optional or standard in later years). Chassis Design: Unitized body construction with front and rear crumple zones (basic by modern standards). 💡 Technology Features Infotainment Audio System: Basic AM/FM radio, optional Cassette player. Likely 2-4 speaker system. Driver Assistance Features: Limited to standard automotive safety features of the era (e.g., safety glass, basic seatbelts). Connectivity Features: N/A (No electronic connectivity features typical of modern vehicles). 🔧 Maintenance Service Intervals Engine Oil Change: Typically every 3,000-5,000 miles or 3-6 months (consult manual for specific mileage based on driving conditions). Spark Plug Inspection Replacement: Apex seal and spark plug inspections are critical for rotary engines. Replacement intervals vary greatly based on...