🏷️ Basic Information Identification Make: Mazda Model: RX-4 Year: 1975 Codes Chassis Code: LA2 Engine Code: 12A (Rotary) 👋 Introduction Market Position Original Market: Entry-level sports coupe and sedan, positioned as an affordable and stylish performance alternative, particularly appealing for its rotary engine technology. Competitive Analysis Competitors: Datsun 240Z/260Z, Toyota Celica, Ford Capri (in some markets), smaller European sports coupes. Key Features Unique Selling Points: Unique rotary engine technology (Wankel), sporty styling, good handling for its class, relatively affordable performance. Manual Purpose Purpose: To provide technicians and owners with the definitive guide for maintaining, diagnosing, and repairing the 1975 Mazda RX-4. 📋 Manual Details Coverage Areas Overall Coverage: Comprehensive Service and Repair Repair Scope: All models and all repairs A-Z Page Count Estimated Pages: Varies by specific print edition, typically 500+ pages for a complete factory service manual. Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Likely printed paper, potential for digital (PDF) versions for sale. 📖 Manual Coverage Systems Covered Engine: Rotary Engine (12A) - Disassembly, Assembly, Reassembly, Timing, Sealing, Lubrication, Cooling, Fuel Injection/Carburetion (depending on specific market/spec), Ignition, Emissions Control. Transmission: Manual Transmission (likely 4-speed and 5-speed options), Automatic Transmission (if applicable) - Overhaul, Adjustment, Fluid Specifications, Shifter Linkage. Drivetrain: Rear Axle, Driveshaft, U-Joints, Differential - Inspection, Lubrication, Repair. Suspension: Front Suspension (Independent, likely MacPherson struts), Rear Suspension (Live Axle, likely leaf springs or coil springs) - Component Inspection, Bushing Replacement, Shock Absorber/Strut Replacement, Alignment Specifications. Steering: Steering Gearbox (likely recirculating ball), Power Steering System (if equipped) - Adjustment, Repair, Fluid Types, Tie Rod Ends, Ball Joints. Brakes: Front Disc Brakes, Rear Drum Brakes (common for the era) - Pad/Shoe Replacement, Rotor/Drum Machining, Caliper/Wheel Cylinder Overhaul, Brake Fluid Specifications, Bleeding Procedures, Parking Brake System. Electrical: Battery, Alternator, Starter, Ignition System (Points/Condenser or early electronic), Lighting System, Gauges, Wiring Diagrams, Fuses, Relays, Switches, Wiper System, Horn. Fuel System: Carburetor(s) (likely Hitachi/Mikuni), Fuel Pump, Fuel Lines, Fuel Tank - Cleaning, Adjustment, Jetting, Diaphragm Replacement. Cooling System: Radiator, Water Pump, Thermostat, Hoses, Fan - Flushing, Replacement, Antifreeze Specifications. Exhaust System: Manifold, Pipes, Muffler, Catalytic Converter (if applicable for the market) - Inspection, Replacement. Body And Chassis: Frame, Body Panels, Doors, Hood, Trunk, Bumpers, Glass, Seals - Adjustment, Repair, Rust Prevention, Trim. Interior: Seats, Dashboard, Upholstery, Headliner, Trim - Removal, Installation, Repair. Procedures Included Maintenance: Oil Changes, Filter Replacements, Spark Plug Gap/Replacement, Tune-ups, Lubrication Points, Brake Adjustments, Tire Rotation, Coolant Flushes. Diagnostics: Troubleshooting charts for common symptoms, Electrical diagnostics, Engine performance issues, Brake system faults, Suspension noises. Repair: Engine rebuilding, Transmission overhauls, Brake component replacement, Suspension and steering linkage repair, Body panel replacement, Electrical component repair/replacement. Adjustment: Carburetor idle and mixture, Ignition timing, Clutch adjustment, Parking brake adjustment, Door and window alignment. Specification Data: Torque specifications for all fasteners, Engine clearances, Fluid capacities, Tire pressures, Alignment angles. Technical Depth Depth: Complete rebuild procedures, detailed diagnostic flowcharts, component-level repair instructions. Audience: Professional Technicians, Enthusiast Mechanics 📊 Manual Specifications File Format Digital Format: Searchable PDF (if available), high-resolution scans. Print Quality Print Quality: Professionally printed with clear diagrams and text (original). High-quality reproduction for aftermarket. Binding Type Binding: Original manuals often saddle-stitched or perfect bound. Reprints typically perfect bound or coil bound for durability. Paper Type Paper Type: Durable, high-quality paper stock to withstand shop use. ⚙️ Engine Specifications Primary Engine Engine Type: Two-Rotor Rotary (Wankel) Engine Code: 12A Displacement: 1146 cc (approx. 70 cubic inches) Performance Horsepower: Approximately 100-110 hp (net, depending on market and specific configuration) Torque: Approximately 115-125 lb-ft (net, depending on market and specific configuration) Fuel System Fuel Delivery: Dual Barrel Carburetor (e.g., Hitachi or Mikuni) Fuel Type: Unleaded Gasoline (91 Octane or higher recommended) Ignition System Ignition Type: Distributor-based, points and condenser ignition (or early electronic ignition variants) Lubrication Oil Type Recommendation: API SF or SG rated, SAE 10W-30 or 20W-50 (specific recommendations in manual, often oil-cooled rotary specific). Cooling System Coolant Type: Ethylene Glycol based antifreeze (50/50 mix 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, hydraulically operated (manual) Fluid Specifications Manual Transmission Fluid: GL-4 SAE 75W-90 or 80W-90 gear oil (specific Mazda recommendation should be verified in manual). Automatic Transmission Fluid: Dexron III or equivalent (specific Mazda recommendation should be verified in manual). 📐 Dimensions Exterior Body Styles: 2-door Coupe, 4-door Sedan, 5-door Station Wagon Wheelbase: Approx. 98.4 inches (2499 mm) Length: Approx. 167.1 inches (4244 mm) for Coupe/Sedan Width: Approx. 64.2 inches (1631 mm) Height: Approx. 52.6 inches (1336 mm) for Coupe Weights Curb Weight: Approx. 2300-2600 lbs (1043-1179 kg), depending on body style and equipment. Gross Vehicle Weight Rating: Refer to vehicle data plate; typically around 3200-3500 lbs. Wheels Tires Wheel Bolt Pattern: 4x110mm Tire Sizes: Commonly 175/70R13 or 185/70R13, depending on...