🏷️ Basic Information Identification Make: Mazda Model: RX2 / RX3 Product Name: Mazda RX2 RX3 1970-1978 Workshop Service Repair Manual PDF Download Codes Chassis Codes: S102A (RX2), S124A (RX3 Sedan), S132A (RX3 Coupe) Generation Generation Identifier: First Generation (RX2), First Generation (RX3) 👋 Introduction Market Position Positioning: Essential resource for owners and mechanics seeking to maintain, repair, or restore the iconic Mazda RX2 and RX3 rotary models. Targets classic car enthusiasts and rotary engine specialists. Competitive Analysis Comparison: Offers a depth of technical detail often surpassing aftermarket manuals, providing factory-level insights crucial for the unique rotary engine architecture. A vital supplement to limited original documentation for these models. Key Features Unique Selling Points: Detailed rotary engine specific procedures, comprehensive wiring diagrams, troubleshooting flowcharts, and factory specifications for a broad range of model years. 📋 Manual Details Coverage Areas Applicable Years: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Models Covered: Mazda RX2 (Capella Rotary), Mazda RX3 (Savanna Rotary) Page Count Estimated Page Count: 800+ Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download Searchability: Likely text-searchable PDF, allowing for quick location of specific topics. 📖 Manual Coverage Systems Covered Powertrain: Rotary Engine (12A), Transmission (4-speed Manual, 3-speed Automatic), Clutch, Differential, Driveshafts Chassis: Suspension (Front & Rear), Steering System, Brakes (Front Disc, Rear Drum), Wheels, Tires Electrical: Ignition System, Charging System, Starting System, Lighting, Gauges, Wiper System, Horn, Fuse Box Diagrams Body And Interior: Body Panels, Doors, Windows, Seats, Interior Trim, HVAC System (if applicable), Fuel System, Exhaust System Fuel System: Fuel tank, fuel lines, fuel pump, carburetor(s), emission control systems (where applicable). Cooling System: Radiator, water pump, thermostat, coolant hoses, fan, heater core. Procedures Included Maintenance: Lubrication, Fluid Changes (Oil, Coolant, Brake Fluid), Filter Replacements, Spark Plug (Apex Seal) Inspection, Battery Maintenance Repair: Engine Overhaul (Apex Seal Replacement, Rotor Housing Inspection), Transmission Rebuild, Brake System Overhaul, Suspension Component Replacement, Electrical Component Diagnosis and Repair Troubleshooting: Diagnostic Charts, Symptom-Based Troubleshooting Guides, Common Problems and Solutions Emissions Controls: Procedures for inspection, adjustment, and servicing of any factory-fitted emissions control equipment. Technical Depth Depth: Comprehensive: Covers basic adjustments to full engine and transmission rebuilds, including detailed torque specifications, clearances, and diagnostic procedures. Wiring Diagrams: Detailed electrical schematics for all systems, aiding in diagnosis and repair. Torque Specifications: Extensive listing of torque values for critical fasteners across all mechanical systems. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Quality: High-resolution scans of original factory documentation, ensuring clarity and readability. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Mazda Rotary (Wankel) Engine Displacement: 1146cc (12A) Engine Code: 12A Performance Horsepower Rx2 Early: ~110-120 hp (SAE Gross) Horsepower Rx3 Early: ~110-120 hp (SAE Gross) Torque Rx2 Early: ~118-125 lb-ft (SAE Gross) Torque Rx3 Early: ~118-125 lb-ft (SAE Gross) Fuel System Fuel Delivery: Downdraft Carburetor (e.g., Hitachi, Mikuni) or Dual Side-Draft Carburetors depending on model and year. Fuel Type: Unleaded Gasoline (Octane rating may vary, consult original spec sheet) Engine Maintenance Apex Seal Replacement Interval: Variable, condition-dependent; manual provides inspection and replacement procedures. Oil Type Recommendation: Mazda recommended specific rotary engine oil or high-quality mineral/synthetic oil meeting specified API service classifications (e.g., SF or SG equivalent). Consult manual for exact specs. Engine Mounts: Inspection and replacement procedures for engine mounts to mitigate vibration. 🔧 Transmission Standard Standard Transmission: 4-Speed Manual Optional Optional Transmission: 3-Speed Automatic (Torqueflite derivative, specific designation varies) Features Clutch Type: Single Dry Plate Transmission Maintenance Manual Transmission Fluid Spec: GL-4 Hypoid Gear Oil (e.g., SAE 75W-90 or SAE 80W-90) Automatic Transmission Fluid Spec: Dexron II or equivalent automatic transmission fluid 📐 Dimensions Exterior Rx2 Coupe Length: ~4170 mm Rx3 Coupe Length: ~4175 mm Rx3 Sedan Length: ~4170 mm Wheelbase: ~2420 mm (varies slightly by body style) Weights Curb Weight Est: 950 - 1050 kg (depending on body style and equipment) 🛡️ Safety Features Ratings Crash Test Data: No modern crash test data available for this era; manual focuses on mechanical safety systems. Active Features Braking System: Front: Disc Brakes; Rear: Drum Brakes. Dual-circuit hydraulic system. Parking Brake: Mechanical lever acting on rear wheels. Passive Features Seat Belts: Standard lap belts, optional shoulder belts may be present depending on model year and region. Body Construction: Unitized body construction with structural integrity considerations for its time. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio, often with an 8-track player option in later models. Driver Assistance Braking Assist: None (standard hydraulic system) Connectivity Auxiliary Inputs: None 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000 miles or 3 months (typical for the era, manual provides specifics). Ignition Points Condenser: Periodic inspection and adjustment/replacement recommended (manual details procedure). Carburetor Cleaning: As needed based on performance, manual details adjustment procedures. Fluid Specifications Engine Coolant:...