🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1973 Codes Chassis Code General: AP17 Engine Code General: 12A (Rotary) 👋 Introduction Market Position Original Target Market: Sporty compact car segment, appealing to enthusiasts and those seeking a distinctive Japanese import. Competitive Analysis Key Competitors 1973: Datsun 240Z, Toyota Corolla, Honda Civic (early models). Key Features Rotary Engine: Distinctive Wankel rotary engine technology offering smooth operation and a unique power delivery. Manual Value Proposition: Vehicle-specific, dealership-level technical data for comprehensive DIY repair and maintenance. Manual Advantage Digital Vs Print: Offers convenience of digital access, searchability, selective printing, and protection from wear and tear compared to traditional paper manuals. 📋 Manual Details Coverage Areas All Models And Trims: Yes Repair Scope: A-Z (All Repairs) Page Count Estimated Pages: Varies by specific factory manual, typically 500-1000+ pages for a comprehensive service manual. Manual Type Type: Factory Service and Repair Manual Language Language: English Format Digital Format: PDF Compatibility: Windows Vista (32/64-bit), XP, ME, 98, NT, 2000, macOS 📖 Manual Coverage Systems Covered Engine: Complete overhaul, component testing, lubrication, cooling system, fuel system, emission control, ignition system, starting and charging. Transmission: Manual transmission repair, clutch service, automatic transmission diagnosis and repair (if applicable to 1973 models). Drivetrain: Transfer case, propeller shaft, drive shaft, differential, axle, suspension, steering, wheel alignment. Brakes: Hydraulic system, brake control, parking brake, specifications, troubleshooting. Electrical: Wiring schematics, lighting, instruments, gauges, audio/visual systems, horn, wiper/washer system, power locks, engine immobilizer (if applicable), cruise control. Body And Chassis: Exterior and interior trim, doors, engine hood, windshield, mirrors, glass, instrument panel, seats, body repair, corrosion prevention. Climate Control: Air conditioning system diagnosis and service. Safety Restraint: Seat belts, supplementary restraint systems (if applicable). Procedures Included Maintenance: Scheduled maintenance, fluid changes, lubrication, tune-ups. Diagnostics: Step-by-step diagnostic procedures for all major systems. Repair: Detailed repair instructions for components and systems. Troubleshooting: Extensive troubleshooting guides with symptom-to-cause correlations. Specifications: Torque values, clearances, fluid capacities, electrical values, emissions standards. Technical Depth Depth: Factory-level detailed repair, maintenance, diagnostics, and overhaul procedures. 📊 Manual Specifications File Format PDF Quality: High-resolution, searchable text with clear diagrams and illustrations. Printability: All pages are printable, allowing for selective printing of required sections. Binding Type Digital Binding: N/A (Digital PDF) Paper Type Digital Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Rotary (Wankel) Engine Code: 12A Displacement: 1146 cc (69.9 cu in) Rotor Housing Diameter: 70 mm Rotor Radius: 57 mm Compression Ratio: 9.4:1 (typical) Performance Horsepower Gross Est: Approx. 100-110 hp @ 6000 rpm (depending on specific market and emission controls) Torque Gross Est: Approx. 115-125 lb-ft @ 3500 rpm (depending on specific market and emission controls) Fuel System Fuel Delivery: Two-barrel downdraft carburetor (e.g., Hitachi or Mikuni) Fuel Type: Unleaded gasoline (91 octane or higher recommended for optimal performance and longevity) Lubrication Oil Capacity Quarts: Approx. 5.3 US quarts (with filter) Recommended Oil Viscosity: 10W-30 or 10W-40 (check manual for specific climate recommendations) Ignition Ignition System: Distributor, ignition coil, spark plugs. Cooling Cooling System Type: Water-cooled Coolant Capacity Quarts: Approx. 5.0 US quarts Coolant Type: Ethylene glycol-based antifreeze/coolant (50/50 mixture with distilled water recommended) 🔧 Transmission Standard Transmission Type: 4-speed manual transmission Optional Transmission Type: 3-speed automatic transmission (optional) Features Clutch Type: Dry single-plate diaphragm spring clutch Fluid Specifications Manual Transmission Fluid Type: GL-4 SAE 75W-90 or 80W-90 gear oil Automatic Transmission Fluid Type: Dexron II or equivalent (check manual for exact specification) 📐 Dimensions Exterior Wheelbase Inches: 97.2 inches Overall Length Inches: 164.6 inches Overall Width Inches: 63.6 inches Overall Height Inches: 51.6 inches (Coupe) Weights Curb Weight Lbs: Approx. 2100-2300 lbs (depending on body style and equipment) Gross Vehicle Weight Rating Lbs: Approx. 3000 lbs Wheels Tires Standard Tire Size: 175SR13 (typical) Wheel Bolt Pattern: 4x110mm Wheel Size: 13x5.0J 🛡️ Safety Features Ratings Historical Safety Standards: Designed to meet 1973 US Federal Motor Vehicle Safety Standards (FMVSS). Active Features Brakes Front: Disc brakes Brakes Rear: Drum brakes Passive Features Seat Belts: Standard lap belts (front), lap belts for rear passengers (depending on body style). Windshield: Laminated safety glass Side Windows: Toughened safety glass 💡 Technology Features Infotainment Audio System: Factory AM/FM radio (optional). Speakers: Typically 2 or 4 speakers. Driver Assistance Cruise Control: Optional Power Steering: Optional Connectivity Vehicle Systems: Basic electrical and mechanical systems, no advanced digital connectivity. 🔧 Maintenance Service Intervals Oil Change Interval Miles: Every 3,000 miles or 3 months, whichever comes first. Air Filter Replacement Miles: Every 12,000 miles or 12 months. Spark Plug Replacement Miles: Every 12,000-15,000 miles. Timing Belt Replacement Miles: N/A (Rotary engines do not have timing belts; they use a fixed timing chain and rotor timing). Fluid Specifications Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid Coolant Type: Ethylene glycol-based antifreeze/coolant (50/50 mixture) Known Issues Apex Seal Wear: A common concern with older...