🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1975 Codes Chassis Codes: S102A, S124A, S124A-T (Wagon, Coupe, Sedan respectively) 👋 Introduction Market Position Positioning: The Mazda RX-3 was positioned as a sporty and affordable compact car, offering unique rotary engine technology to a mainstream audience. Competitive Analysis Key Competitors: Ford Escort, Chevrolet Vega, Datsun 1200/B210, Toyota Corolla. Key Features Unique Selling Points: Peppy rotary engine performance, distinctive styling, light weight, and affordable price point. 📋 Manual Details Coverage Areas Covered Regions: Global (based on factory service content) Page Count Estimated Page Count: Approximately 400-600 pages (typical for a comprehensive factory service manual of this era) Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: PDF Readability: PDF format allows for easy searching, zooming, and printing of specific sections. 📖 Manual Coverage Systems Covered Engine And Drivetrain: Rotary engine (12A), lubrication, cooling, fuel, ignition, emissions, clutch, manual transmission, automatic transmission, propeller shaft, rear axle assembly Chassis And Body: Steering system, brake system (including front discs and rear drums), suspension (front and rear), wheels and tires, body construction, interior trim, exterior body panels, HVAC (if equipped) Electrical System: Wiring diagrams, lighting, starting and charging system, ignition system, instrumentation, accessories Emissions Control System: Details on thermal reactors, air injection systems, and EGR (Exhaust Gas Recirculation) systems specific to the 1975 model year emissions standards. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, fluid level checks, lubrication points, belt adjustments, battery maintenance Repair And Overhaul: Engine disassembly and reassembly, transmission overhaul, brake system repairs, suspension component replacement, steering system adjustments, electrical component troubleshooting and replacement Diagnostics And Troubleshooting: Step-by-step diagnostic procedures for common problems, symptom-based troubleshooting, fault code interpretation (if applicable to the era) Alignment Specifications: Includes factory specifications for wheel alignment (caster, camber, toe). Torque Specifications: Provides essential torque values for critical fasteners throughout the vehicle. Body Repair: Information on panel alignment, rust repair considerations, and mounting points for trim and accessories. Technical Depth Depth Of Information: Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers complete vehicle teardown, rebuild, and specification settings. 📊 Manual Specifications File Format PDF Quality: Likely scanned from original print, quality can vary but generally readable. Text searchability depends on OCR performed. Print Quality Scanned Origin: Digital copy of a physical factory service manual. Binding Type Original Binding: Spiral-bound or perfect-bound (original print) Paper Type Original Paper: Heavy-duty paper stock suitable for workshop use. ⚙️ Engine Specifications Primary Engine Engine Type: Mazda 12A Rotary Engine Rotor Displacement: 573 cc per rotor (1146 cc total equivalent displacement) Performance Horsepower Net: Approximately 97-105 hp (depending on market and emissions equipment) Torque Net: Approximately 100-105 lb-ft Fuel System Carburetion: Single or dual barrel Hitachi downdraft carburetor (specific model varies) Fuel Type: Unleaded gasoline (required from 1975 onwards due to emissions regulations) Fuel Pump: Mechanical fuel pump operation and testing procedures. Technical Details Apex Seals: Crucial wear item; manual covers inspection and replacement procedures. Rotary Specifics: Details on rotor housing wear, eccentric shaft, apex seal grooves, and corner seals. Ignition System: Distributor-based ignition system. Covers points, condenser, coil, and spark plug specifications. 🔧 Transmission Standard Type: 4-speed manual transmission Optional Type: 3-speed automatic transmission (Mazda 'F' or similar) Features Clutch Type: Single dry plate, hydraulically actuated 📐 Dimensions Exterior Wheelbase: Approximately 97.0 inches (2464 mm) Length: Approximately 161.4 inches (4100 mm) Width: Approximately 63.2 inches (1605 mm) Height: Approximately 53.0 inches (1346 mm) Weights Curb Weight: Approximately 2,100 - 2,300 lbs (953 - 1043 kg) depending on body style and equipment 🛡️ Safety Features Ratings Crash Test Data: Limited official crash test data available for this era and specific model. Era safety standards were significantly different. Active Features Braking System: Front disc brakes, rear drum brakes. Manual covers inspection, pad/shoe replacement, hydraulic system bleeding. Passive Features Seatbelts: Standard lap and shoulder belts (front), lap belts (rear). Manual may cover inspection and adjustment. 💡 Technology Features Infotainment Entertainment System: Basic AM/FM radio, often with an 8-track player option. Manual covers basic electrical connections for these components. Driver Assistance Braking Assistance: Power brake booster (standard on most models). Manual covers its inspection and servicing. Connectivity Wiring Diagrams: Detailed electrical system schematics are a critical part of the manual, essential for troubleshooting modern (for the era) electrical systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 miles (4,800 km) or 3 months, whichever comes first. Manual will specify exact interval. Spark Plug Replacement: Recommended every 15,000-20,000 miles (24,000-32,000 km). Manual details correct gap and type. Fluid Specifications Engine Oil: API SE or SF service classification. Viscosity typically SAE 10W-30 or 10W-40. Manual specifies precise grade and capacity. Coolant: Ethylene glycol-based antifreeze. Typically a 50/50 mix with water. Manual specifies capacity and type. Transmission Fluid: Manual: GL-4 gear oil, SAE 75W-90. Automatic: DEXRON II or equivalent....