🏷️ Basic Information Identification Make: Mazda Model: RX-4 Year: 1976 Product Type: Service and Repair Manual 👋 Introduction Market Position Segment: Compact/Mid-size Sporty Car Unique Selling Proposition: Rotary Engine Technology, Stylish Coupe/Sedan/Wagon Body Styles Competitive Analysis Competitors: Datsun 240Z/260Z, Toyota Celica, Ford Capri, Triumph TR7 Key Features Engine Highlight: Mazda's Wankel Rotary Engine offering smooth operation and high-revving capabilities Design: Modern (for its time) styling, available in various body styles Manual Value Value Proposition: Essential for owners and mechanics aiming for accurate, factory-level servicing and repair of the unique rotary powertrain. 📋 Manual Details Coverage Areas Coverage Scope: All Models & All Repairs A-Z Data Origin: Dealership Technician Manual Specificity: Vehicle Specific Information Type: Maintenance, Service, Diagnosis, Repair Page Count Estimated Pages: 600+ Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: Printed Document 📖 Manual Coverage Systems Covered Powertrain: Rotary Engine (12A), Fuel System, Ignition System, Cooling System, Lubrication System Drivetrain: Manual Transmission, Automatic Transmission (optional), Drive Axles, Clutch Suspension: Front Suspension (Independent), Rear Suspension (Live Axle), Steering System Brakes: Front Disc Brakes, Rear Drum Brakes, Hydraulic System, Parking Brake Electrical: Charging System, Starting System, Lighting System, Instrumentation, Wiring Diagrams, Fuses, Relays Body: Exterior Panels, Doors, Windows, Interior Trim, Seating Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements, Spark Plug Replacement (Apex Seals), Lubrication Points Diagnostics: Troubleshooting Guides, Symptom-Based Diagnosis, Component Testing Repair: Engine Rebuild (Rotary Specifics), Transmission Overhaul, Brake System Repair, Suspension Component Replacement, Electrical Component Repair Adjustments: Carburetor Adjustment, Ignition Timing Adjustment, Clutch Adjustment, Brake Adjustment Specifications: Torque Values, Clearances, Fluid Capacities, Resistance Values Technical Depth Depth: Comprehensive Rebuild Procedures, Detailed Component Disassembly and Reassembly Diagnostic Tools: Specific diagnostic procedures and expected readings 📊 Manual Specifications File Format Format: Printed, Bound Print Quality Quality: Professional Quality Printing, Clear Diagrams and Illustrations Binding Type Binding: Stapled or Perfect Bound (depending on original publication) Paper Type Paper: Durable Paper Stock suitable for workshop use ⚙️ Engine Specifications Primary Engine Engine Type: Mazda 12A Rotary Engine Rotor Design: Two-Rotor, Naturally Aspirated Displacement Cc: 1146 cc (effective displacement) Apex Seal Material: Carbon-impregnated Seal Material (specific type detailed in manual) Performance Horsepower Gross Hp: Approx. 110-125 hp (depending on emissions controls and specific market) Torque Gross Lb Ft: Approx. 125-135 lb-ft Fuel System Carburetion: Two-Barrel Downdraft Carburetor (e.g., Hitachi or Nikki) Fuel Type: Unleaded Gasoline (Octane rating specified in manual) Ignition System: Distributor-based, point-type ignition system (CDI system may be present on some variants) Cooling System Type: Water-cooled Lubrication System Oil Type Recommendation: Specific API Service SG or SH rated oils, viscosity grade detailed in manual (e.g., 10W-30, 10W-40) Rotary Specifics Oil Metering: Separate oil metering system for apex and side seals (details in manual) 🔧 Transmission Standard Type: 4-Speed Manual Transmission Optional Type: 3-Speed Automatic Transmission Features Clutch Type: Dry Single Plate Fluid Specifications Manual Transmission Fluid: API GL-4 Gear Oil, SAE 75W-90 or 80W-90 (specifics in manual) Automatic Transmission Fluid: Dexron II or equivalent (specifics in manual) 📐 Dimensions Exterior Wheelbase Inches: 98.0 in (Coupe/Sedan), 104.3 in (Wagon) Length Inches: 168.5 in (Coupe/Sedan), 175.6 in (Wagon) Width Inches: 64.2 in Height Inches: 52.2 in (Coupe/Sedan), 54.5 in (Wagon) Weights Curb Weight Lbs: Approx. 2200-2500 lbs (depending on body style and options) Gross Vehicle Weight Rating Gvwr Lbs: Specified in manual, typically around 3200-3400 lbs Wheels Tires Wheel Bolt Pattern: 4x114.3 mm (4x4.5 inches) Standard Tire Size: 175 SR 13 or 185/70 SR 13 (specifics in manual) 🛡️ Safety Features Ratings Crash Test Data: No official NHTSA ratings available for this era, but manual covers structural integrity and safety components. Active Features Braking System: Front Disc Brakes, Rear Drum Brakes Steering Type: Recirculating Ball Passive Features Seat Belts: Standard three-point front seat belts Construction: Unitized Body Construction 💡 Technology Features Infotainment Audio System: AM/FM Radio, optional 8-track player or cassette deck (dealer installed options). Driver Assistance Features: Basic for the era; no electronic driver assistance systems like ABS or traction control. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles or 3 months (typical for the era, manual provides specific guidance) Tune Up Interval: Every 12,000-15,000 miles or 12 months Filter Replacement: Air filter, fuel filter replaced as per schedule in manual Fluid Specifications Coolant Type: Ethylene Glycol based coolant, typically a 50/50 mix with distilled water. Specific type and capacity in manual. Brake Fluid Type: DOT 3 or DOT 4 Hydraulic Brake Fluid (specified in manual) Power Steering Fluid: If equipped, consult manual for specific type (typically ATF Dexron II or equivalent) Known Issues Rotary Apex Seals: Wear of apex seals is a common concern; manual details inspection and replacement procedures. Carburetor: Carburetor tuning and maintenance, potential for gumming if not used regularly. Oil Consumption: Normal for rotary engines to consume a small amount of oil; manual clarifies normal vs. excessive consumption. 📚 Vehicle History...