The Mazda MX-5, also known as the Miata, is a celebrated two-seater sports car that debuted in 1990. This iconic vehicle, chassis code NA and powered by the B6ZE engine, embodies Mazda's philosophy of Jinba Ittai, meaning 'horse and rider as one,' focusing on driver connection and agile handling. Engineered for pure driving enjoyment, the MX-5 has earned acclaim, including multiple spots on 10Best lists, for its exceptional balance, precise steering, and engaging performance. Its lightweight design and responsive naturally aspirated inline 4-cylinder engine, producing 115 horsepower from 1.6 liters, make it a timeless classic cherished by enthusiasts and drivers alike. This comprehensive Repair Service Manual in English provides detailed guidance for maintaining and repairing the 1990 Mazda MX-5. It covers all major systems, including the engine, transmission, drivetrain, suspension, steering, brakes, electrical components, and body. Within its extensive pages, you will find step-by-step repair procedures, disassembly and assembly instructions, cleaning guidelines, and advanced diagnostic information, including OBD-I fault code interpretation. Essential technical data, such as torque specifications and fluid requirements for engine oil, transmission, brakes, and coolant, is also included. This manual is an indispensable resource for professional technicians and DIY mechanics seeking to preserve the performance and reliability of their MX-5. 🏷️ Basic Information Identification Make: Mazda Model: MX-5 Year: 1990 Codes Chassis Code: NA Engine Code: B6ZE 👋 Introduction Market Position Target Audience: Professional technicians and DIY mechanics with basic mechanical and electrical knowledge Competitive Analysis Competitors: Haynes Manuals, Chilton Manuals (though factory service manuals generally offer greater depth) Key Features Advantage Digital: Instant download availability, easy access, search functionality (if enabled) Content Source: Prepares individuals with factory-trained technician knowledge Utility: Guides decision-making for maintenance and repair 📋 Manual Details Coverage Areas Manual Type: Repair Service Manual Language: English Format: PDF Download Delivery Method: Instant Download Page Count Estimated Page Count: Likely over 800 pages (typical for factory service manuals of this era) 📖 Manual Coverage Systems Covered Engine: Complete engine mechanicals, lubrication, cooling, fuel, ignition, emission control systems Transmission: Manual transmission (all gears, clutch system), automatic transmission (if applicable for specific markets/models) Drivetrain: Driveshafts, differential, rear axle assembly Suspension: Front and rear suspension components, shock absorbers, springs, bushings Steering: Steering column, steering rack, power steering system (if equipped) Brakes: Front and rear brake systems (discs/drums), hydraulic system, parking brake Electrical: Wiring diagrams, charging system, starting system, lighting, instruments, accessories, engine control unit (ECU) diagnostics Body: Body panels, doors, hood, trunk, convertible top mechanism, interior trim Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication points Troubleshooting: Diagnostic procedures, symptom-based troubleshooting guides Repair: Step-by-step repair procedures for all major components and systems Disassembly Assembly: Detailed instructions for removing and reinstalling components Cleaning Reinstalling: Procedures for cleaning parts before reassembly Technical Depth Diagnostics: Advanced diagnostics, including OBD-I (On-Board Diagnostics) information and fault code interpretation Rebuilds: Comprehensive procedures for engine and transmission rebuilds Specifications: Critical torque specifications, clearances, tolerances, and diagnostic values 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable if properly created PDF Print Quality Printability: Full Printable Zoom Functionality: YES (Zoom IN/OUT) Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Requirements Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline 4-Cylinder Displacement: 1.6 Liters (1597 cc) Bore X Stroke: 81.0 mm x 79.3 mm Compression Ratio: 9.4:1 Performance Horsepower: 115 hp @ 6500 rpm (US Spec) Torque: 100 lb-ft @ 5000 rpm (US Spec) Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (87 Octane Recommended) Ignition Ignition System: Electronic Ignition System with Distributor Engine Oil Recommended Oil Viscosity: SAE 10W-30 (under normal conditions) Oil Capacity: Approx. 3.5 Liters (3.7 Quarts) with filter change 🔧 Transmission Standard Transmission Type: 5-Speed Manual Optional Transmission Type Optional: 4-Speed Automatic (less common in enthusiast market) Features Clutch Type: Hydraulically actuated dry single plate clutch Fluid Type Manual Transmission Fluid Spec: API GL-4, SAE 75W-90 Gear Oil Fluid Capacity Manual Transmission Fluid Capacity: Approx. 1.8 Liters (1.9 Quarts) 📐 Dimensions Exterior Length: 3955 mm (155.7 in) Width: 1675 mm (66.0 in) Height: 1235 mm (48.6 in) Wheelbase: 2265 mm (89.2 in) Weights Curb Weight: Approx. 955-980 kg (2105-2160 lbs) Gross Vehicle Weight Rating: Approx. 1240 kg (2734 lbs) 🛡️ Safety Features Ratings NHTSA Ratings 1990: NHTSA ratings for this specific year may not be readily available in a standardized digital format. Consult official NHTSA archives if critical. Active Features Brakes: Front Ventilated Discs, Rear Solid Discs (Standard on most trims) ABS: Optional Anti-lock Braking System (ABS) Passive Features Airbags: Driver-side airbag standard from 1990 model year onwards. Seatbelts: Three-point Inertia-reel seat belts 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM stereo cassette player, optional CD player Speakers: Typically 4 speakers Driver Assistance...