The Mazda RX-3, produced from 1970 to 1978, stands as a testament to Mazda's pioneering spirit in rotary engine technology. Available in Coupe, Sedan, and Station Wagon body styles, this compact sports vehicle offered an affordable yet engaging driving experience, drawing inspiration from European sports car design. Its reputation for agile handling and a lightweight chassis, powered by the distinctive 12A Wankel rotary engine, set it apart from contemporaries like the Datsun 240Z and Toyota Celica. The RX-3 was celebrated for its spirited performance and unique mechanical character, solidifying its place as an enthusiast favorite. This comprehensive Workshop Service Repair Manual provides in-depth guidance for the Mazda RX-3, covering chassis codes S102 and S122. Spanning hundreds of pages, this English-language manual details everything from routine maintenance, such as oil changes and fluid checks, to complex overhauls of the rotary engine, transmissions, brakes, and suspension systems. It includes detailed procedures for carburetor adjustment, ignition timing, and troubleshooting common issues specific to the rotary powerplant and other vehicle components. With factory-level repair information, detailed substeps, and numerous illustrations, this manual is an essential resource for owners, mechanics, and technicians seeking to maintain and repair their RX-3. 🏷️ Basic Information Identification Make: Mazda Model: RX-3 Model Variant: RX3 Body Styles Covered: Coupe, Sedan, Station Wagon Codes Chassis Codes: S102, S122 👋 Introduction Market Position Segment: Compact Sports Coupe/Sedan/Wagon Positioning: Affordable, sporty, rotary-powered Japanese vehicle Competitive Analysis Competitors: Datsun 240Z/260Z, Toyota Celica, Nissan Skyline (early generations), Ford Escort Key Features Engine Type: Unique Mazda Wankel rotary engine Design Inspiration: European sports car styling cues Handling: Renowned for agile handling and lightweight chassis 📋 Manual Details Coverage Areas Covered Years: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Page Count Estimated Page Count: Hundreds Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Rotary engine (12A) disassembly, assembly, inspection, overhaul Fuel System: Carburetor (various models), fuel pump, fuel lines, fuel tank Ignition System: Distributor, ignition coils, spark plugs, wiring Cooling System: Radiator, water pump, thermostat, hoses, fan Lubrication System: Oil pump, oil filter, oil passages, oil requirements Exhaust System: Exhaust manifold, pipes, muffler, catalytic converter (where applicable) Transmission Manual: Clutch, gearbox (4-speed and 5-speed) disassembly, assembly, adjustments Transmission Automatic: Automatic transmission (optional) service and adjustments Driveline: Propeller shaft, differential, drive axles Suspension Front: MacPherson struts, control arms, bushings, springs, shock absorbers Suspension Rear: Leaf springs, shock absorbers, locating links (depending on body style) Steering System: Steering box, steering column, tie rods, linkages Brake System: Front disc brakes, rear drum brakes, master cylinder, brake lines, calipers, wheel cylinders Electrical System: Battery, alternator, starter motor, lighting, gauges, wiring diagrams Body And Chassis: Body panel removal/installation, frame components, weatherstripping Interior: Seating, dashboard, trim panels, carpets, headliner Heating And Ventilation: HVAC system components, blower motor, heater core, A/C (if equipped) Exterior: Bumpers, grille, doors, hood, trunk lid, glass, trim Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, fluid level checks Engine Overhaul: Complete engine rebuild procedures for the 12A rotary engine Transmission Repair: Gearbox disassembly, reassembly, synchro ring replacement, bearing service Suspension Diagnosis And Repair: Wheel bearing replacement, strut replacement, bushing renewal Brake Service: Pad/shoe replacement, caliper/wheel cylinder overhaul, bleeding procedure Electrical Troubleshooting: Diagnostic procedures for common electrical faults, wiring harness repair Carburetor Adjustment And Rebuild: Detailed procedures for setting idle speed, mixture, and rebuilding carburetor units Rotary Apex Seal Inspection: Procedures for assessing apex seal wear and potential replacement Cooling System Flush And Refill: Proper procedures for draining, flushing, and refilling the cooling system Ignition Timing Adjustment: Setting ignition timing using a timing light Wheel Alignment Specifications: Front and rear wheel alignment angles Troubleshooting Guides: Step-by-step diagnostics for common issues Technical Depth Depth: Complete factory-level repair and overhaul information Detail Level: Hundreds of photos and illustrations, detailed substeps, notes, cautions, warnings Diagnostic Tools: Information on basic diagnostic tools and techniques required 📊 Manual Specifications File Format Format: PDF Compatibility: Windows and Mac operating systems Print Quality Printability: Printable without restriction Image Resolution: High-quality for clear viewing of illustrations Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: 12A Engine Type: Rotary (Wankel) Engine Displacement Swept Volume: 1146 cc (approx. 69.9 cu in) Rotor Housing Design: Two-rotor Performance Horsepower Est: 80-110 hp (depending on emissions controls and year) Torque Est: 90-100 lb-ft (depending on emissions controls and year) Fuel System Carburetor Type: Single or Twin Solex, Hitachi, or Mikuni carburetors (model dependent) Fuel Type: Unleaded gasoline (later models) Oil System Oil Type: Specific rotary engine oil or SAE 20W-50 (refer to manual for precise specs) Oil Capacity: Approx. 4.5-5.0 liters (including filter, consult manual) 🔧 Transmission Standard Transmission Type: 4-speed manual Optional Transmission Type: 3-speed automatic (e.g., Toyo Kogyo 'TorqueFlite' derivative) Features Clutch Type:...