This manual covers the Mazda MX-5, also known as the Miata, specifically the First Generation (NA) model. Produced from 1989 to 1997, this iconic lightweight sports car is renowned for its driver-focused design, exceptional handling, and pure driving experience. Built upon Mazda's legacy of creating engaging vehicles, the NA MX-5 revived the roadster segment with its simplicity, rear-wheel-drive layout, and accessible performance. Key features include a naturally aspirated 1.6L DOHC inline-4 engine producing approximately 115 horsepower, a responsive 5-speed manual transmission, and a highly praised manual soft-top convertible roof. Its reputation for superb handling and direct steering makes it a celebrated model among automotive enthusiasts. This comprehensive service and repair manual provides detailed information for maintaining and repairing all trim levels of the 1991 Mazda MX-5 Miata. Covering a wide array of systems, including engine mechanicals, fuel injection, manual and automatic transmissions, suspension, brakes, steering, and the electrical system, this manual is an essential resource. It includes procedures for routine maintenance, component overhauls, troubleshooting, and diagnostics, featuring clear wiring diagrams and precise torque specifications. Designed for both professional mechanics and dedicated DIY enthusiasts, this manual offers the depth of technical information required to keep your vehicle in optimal condition, ensuring its legendary driving dynamics are preserved. 🏷️ Basic Information Identification Make: Mazda Model: MX-5 Model Variant: Miata Codes Chassis Code: NA Generation: First Generation (NA) 👋 Introduction Market Position Segment: Lightweight Sports Car / Roadster Reputation: Iconic, affordable, and driver-focused sports car that revived the roadster segment. Competitive Analysis Key Competitors: Lotus Elan (M100), Alfa Romeo Spider, Fiat Spider, Triumph Spitfire (older models). Key Features Driving Dynamics: Renowned for its superb handling, balanced chassis, and direct steering feel. Design Philosophy: Simplicity, lightweight construction, rear-wheel drive, and a focus on the pure driving experience. Convertible Top: Manual soft-top convertible roof, praised for its ease of operation. 📋 Manual Details Coverage Areas Market Coverage: Global (primarily North America and Europe for this era) Trim Levels Covered: All available trim levels for the 1991 model year Page Count Estimated Page Count: Over 1000 pages (typical for a comprehensive factory service manual) Manual Type Manual Type: Full Service & Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine disassembly, assembly, rebuilding, and tuning for the 1.6L DOHC engine. Engine Management: Detailed diagnostics and repair procedures for the fuel injection system (EFI), ignition system, ECU (Engine Control Unit), and emissions control. Transmission Manual: Service and repair of the 5-speed manual transmission, including clutch system and driveshaft. Transmission Automatic: Service and repair of the optional 4-speed automatic transmission. Suspension: Front and rear suspension systems (double wishbone), shock absorbers, springs, bushings, and alignment procedures. Brakes: Front disc brakes, rear disc brakes, brake hydraulics, ABS (if equipped on specific early models), parking brake system, and bleeding procedures. Steering: Rack and pinion steering system, power steering system (if equipped), steering column, and tie rods. Electrical System: Wiring diagrams, battery, alternator, starter motor, lighting system, fuses, relays, and accessory circuits. Body And Chassis: Body panel removal and installation, interior trim, convertible top mechanism and seals, chassis components, and rust prevention. HVAC: Heating, ventilation, and air conditioning system diagnosis and repair. Diagnostic Trouble Codes: OBD-I (On-Board Diagnostics) codes, diagnostic procedures, and troubleshooting flowcharts. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, tire rotation, and spark plug replacement. Component Overhaul: Detailed steps for rebuilding the engine, transmission, differential, and brake calipers. Troubleshooting: Systematic diagnostic procedures for identifying and resolving common and uncommon faults. Wiring Diagrams: Comprehensive and clear wiring diagrams for all electrical circuits. Torque Specifications: Exact torque values for all fasteners and critical components. Special Tools: Identification and usage of specialized tools required for specific procedures. Technical Depth Depth Of Coverage: Comprehensive from basic preventative maintenance to complete engine and drivetrain overhauls. Includes diagnostic strategies and repair techniques. Diagnostic Capability: Detailed diagnostic charts, symptom-based troubleshooting, and component testing procedures. Repair Level: Suitable for professional mechanics and advanced DIY enthusiasts looking to perform all levels of repair and restoration. 📊 Manual Specifications File Format File Format: PDF Searchability: Likely text-searchable, allowing for quick navigation to specific topics. Print Quality Image Resolution: High-resolution scans ensuring clarity of diagrams, illustrations, and text. Scalability: Pages are likely formatted for standard printing (e.g., A4 or Letter size) and can be zoomed for detail. Binding Type Binding Type: Not applicable (Digital PDF Download) Paper Type Paper Type: Not applicable (Digital PDF Download) ⚙️ Engine Specifications Primary Engine Engine Code: B6 Engine Type: Naturally Aspirated Inline 4-cylinder Displacement: 1.6 Liters (1597 cc) Valvetrain: DOHC (Dual Overhead Camshafts), 16 Valves Performance Horsepower: 115 hp @ 6500 rpm (approx.) Torque: 100 lb-ft @ 5000 rpm (approx.) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Octane rating may vary by market; typically 91 AKI...