🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1975 Codes Chassis Code: S102 Engine Code Family: Mazda Rotary (Wankel) 👋 Introduction Market Position Segment: Compact Sports Coupe/Sedan Target Audience: Enthusiasts, DIY mechanics, and professional technicians working on classic Mazda rotary vehicles. Competitive Analysis Competitors: Datsun Z-cars (240Z, 260Z), Toyota Celica GT, Ford Capri, various European sports coupes of the era. Key Features Vehicle Unique Selling Proposition: Unique rotary engine technology offering smooth power delivery and a distinct sound, sporty handling, attractive styling. Key Features Manual Value Proposition: Essential resource for maintaining and repairing the iconic Mazda RX-3 rotary, providing in-depth technical guidance often unavailable elsewhere for this classic model. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, Fuel System, Cooling System, Lubrication System, Emission Control, Body & Chassis, Interior, Exterior Trim, Troubleshooting, Specifications Page Count Estimated Pages: 500+ Manual Type Type: Workshop Manual / Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine System: Detailed breakdown of the 13B rotary engine, including apex seals, rotor housing inspection, oil metering, ignition timing, lubrication systems, cooling, and fuel delivery. Transmission Drivetrain: Covers manual and automatic transmission overhaul, clutch service, driveshaft and rear axle inspection, universal joints, and differential service. Suspension Steering: Front and rear suspension component replacement (struts, springs, control arms, bushings), steering gear inspection and adjustment, power steering system service (if applicable). Brakes System: Front disc and rear drum brake service, hydraulic system bleeding, brake pad/shoe replacement, master cylinder and wheel cylinder overhaul, parking brake adjustments. Electrical System: Wiring diagrams, starter motor, alternator, battery service, ignition system (distributor, coils, spark plugs), lighting, gauges, fuses, and relays. Fuel Cooling Emission: Carburetor (likely Hitachi) overhaul and adjustment, fuel pump, fuel tank service, radiator, coolant hoses, water pump, and emission control systems (e.g., air injection). Procedures Included Maintenance: Routine oil changes, filter replacements, spark plug service, belt adjustments, fluid level checks, general lubrication, and tune-up procedures. Repair Overhaul: Complete engine rebuild procedures, transmission overhauls, brake caliper/wheel cylinder rebuilds, carburetor rebuilds, suspension component replacement. Troubleshooting: Diagnostic flowcharts and symptom-based troubleshooting for common engine, electrical, and mechanical issues specific to the RX-3 rotary. Specifications Data: Torque specifications for all fasteners, engine timing settings, valve clearances (for any rotary-specific setup), fluid capacities, and diagnostic readings. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including detailed component diagrams and exploded views. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text-based PDF, allowing for keyword searches of specific components or procedures. Printability: Printable pages for physical reference. Print Quality Image Resolution: Variable, depending on original scan quality. Expect clear diagrams and schematics suitable for repair work. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Mazda 13B Rotary (Wankel) Engine Layout: Front-mounted, Rotary Displacement: 1146 cc (69.9 cu in) Rotor Housing Design: Two-rotor, naturally aspirated Performance Horsepower Gross Est: 110-135 hp (depending on carburetor and tuning) Torque Gross Est: 117-130 lb-ft Fuel System Fuel Delivery: Dual-barrel Hitachi Carburetor (e.g., DCH-32 or similar) Fuel Type: Unleaded gasoline (premium recommended) Ignition System Ignition Type: Distributor-based, coil-and-points or electronic ignition (depending on final production spec) 🔧 Transmission Standard Transmission Type: 4-speed Manual Transmission Optional Transmission Type: 3-speed Automatic Transmission (e.g., Mazda 'Jatco' type) Features Clutch Type: Single dry plate, diaphragm spring Rear Axle Ratio Est: 3.70:1 or 3.90:1 (typical) 📐 Dimensions Exterior Length Est: 160.6 inches (4080 mm) Width Est: 64.2 inches (1630 mm) Height Est: 51.8 inches (1315 mm) Wheelbase Est: 98.4 inches (2500 mm) Weights Curb Weight Est: 2200 - 2400 lbs (1000 - 1090 kg) Gross Vehicle Weight Rating Est: 3000 - 3300 lbs (1360 - 1497 kg) 🛡️ Safety Features Ratings Crash Test Data: Limited official data available for this era; emphasis on structural integrity of the unibody construction. Active Features Braking System: Front disc brakes, Rear drum brakes. Steering: Recirculating ball steering system. Passive Features Seatbelts: Standard three-point front seatbelts, lap belts for rear passengers. Body Construction: Unit-body construction with integrated safety cage elements. 💡 Technology Features Infotainment Audio System: AM/FM Radio, often with an 8-track player or cassette adapter provision. Gauges: Tachometer, speedometer, fuel level, water temperature, oil pressure. Often features a 'key warning' light. Driver Assistance Systems: None (pre-dating modern driver assistance technologies) 🔧 Maintenance Service Intervals Oil Change Interval Est: 3,000 miles or 3 months (whichever comes first), synthetic oil recommended for rotary engines. Spark Plug Replacement Est: 15,000-20,000 miles Coolant Flush Est: 2 years or 30,000 miles Fluid Specifications Engine Oil Type Est: API SF or SG rated 10W-30 or 20W-50 (check manual for specific rotary oil requirements) Coolant Type Est: Ethylene Glycol based antifreeze/coolant (50/50 mix with distilled water) Transmission Fluid Type Est: Dexron II/III Automatic Transmission...