The Mazda MX-5 Miata, first generation (NA chassis code), introduced in 1990, is a celebrated lightweight sports car and roadster renowned for its driver-focused Jinba Ittai philosophy. Inspired by classic British roadsters, this iconic vehicle offers an engaging driving experience with its 1.6L B6 DOHC engine producing 116 horsepower. Known for its exceptional engineering quality and reliability, the MX-5 Miata has earned accolades, including multiple appearances on Car and Driver's 10Best list, cementing its status as a beloved enthusiast vehicle. This comprehensive Workshop Service Repair Manual provides detailed information for the Mazda MX-5 Miata. It covers all essential aspects of maintenance, repair, and diagnostics, including complete engine overhaul, transmission service, brake system repair, electrical schematics, suspension, and steering systems. With step-by-step procedures, troubleshooting guides, and technical specifications, this manual empowers owners and technicians to perform efficient maintenance and repairs, ensuring the longevity and optimal performance of their vehicle. 🏷️ Basic Information Identification Make: Mazda Model: MX-5 Miata Year: 1990 Chassis Code: NA Generation: First Generation (NA) 👋 Introduction Market Position Vehicle Segment: Lightweight Sports Car, Roadster Target Audience: Enthusiasts, DIY Mechanics, Professional Technicians Competitive Analysis Key Competitors: Lotus Elan, Triumph TR7, Alfa Romeo Spider Key Features Design Philosophy: Jinba Ittai (Horse and Rider as One), Driver Focused, Lightweight Manual Benefit: Empowers owners for efficient repair, maintenance, and troubleshooting. Manual Value Proposition: Cost-effective access to official factory repair data, saving on professional labor costs. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: PDF Download Page Count: Hundreds to Thousands (printable) Delivery Method: Instant Download Compatibility: All Versions of Windows & Mac Required Software: Adobe PDF Reader, WinZip (for larger files) 📖 Manual Coverage Systems Covered Engine Service Repair: Complete Engine Overhaul, Component Repair, Timing Systems Transmission Service Repair: Manual and Automatic Transmission Overhaul, Clutch System Brake System: Brake System Diagnosis, Repair, ABS (if applicable), Pad/Rotor Replacement Electrical System: Complete Electrical Schematics, Component Testing, Wiring Harness Repair Suspension System: Front and Rear Suspension Components, Alignment Procedures, Bushing Replacement Steering System: Steering Gearbox, Power Steering System, Tie Rods Cooling System: Radiator, Water Pump, Thermostat, Cooling Fan Operation Fuel Injection System: Fuel Injectors, Fuel Pump, Fuel Pressure Regulator, ECU Control Fuel System: Fuel Tank, Fuel Lines, Fuel Filter Replacement Emission Control System: Catalytic Converter, EGR System, Oxygen Sensors HVAC System: Heating, Ventilation, and Air Conditioning (HVAC) Service and Repair Engine Control System: ECU Diagnosis, Sensor Testing, Engine Performance Tuning Chassis Body: Body Panel Repair, Frame Inspection, Door/Window Mechanisms Restraint System: Seatbelt Mechanisms, Airbag System (if applicable, though unlikely for 1990) Interior Trim: Interior Component Removal and Installation, Upholstery Differential Drive Axle: Rear Differential Service, Axle Shaft Replacement Procedures Included General Maintenance: Routine Checks, Fluid Top-offs, Filter Replacements Troubleshooting: Systematic Diagnosis of Common Problems and Faults Periodic Lubrication: Scheduled Lubrication Points and Specifications Wiring Diagrams: Detailed Electrical Circuit Diagrams for All Systems Component Replacement: Step-by-step guides for replacing major and minor components Assembly Disassembly: Detailed instructions for taking apart and reassembling various vehicle systems Technical Depth Depth Of Coverage: Comprehensive Factory Level Repair and Diagnostic Information Diagnostic Procedures: Diagnostic Flowcharts and Troubleshooting Trees Technical Data: Torque Specifications, Clearances, Tolerances 📊 Manual Specifications File Specifications File Format: PDF Print Quality: High Quality, Printable Searchability: Likely searchable text within PDF (depending on scan quality) Archival Format: Digital Download ⚙️ Engine Specifications Primary Engine Engine Code: B6 (1.6L) Engine Type: Inline 4-Cylinder, DOHC Displacement: 1597 cc (97.4 cu in) Performance Horsepower: 116 hp @ 6500 rpm (US Spec) Torque: 100 lb-ft @ 5000 rpm (US Spec) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (87 Octane Recommended) 🔧 Transmission Standard Transmission Type: 5-Speed Manual Optional Transmission Type: 4-Speed Automatic (optional in some markets) Features Clutch Type: Hydraulic Actuated Dry Single Plate 📐 Dimensions Exterior Length: 3975 mm (156.5 in) Width: 1675 mm (65.9 in) Height: 1235 mm (48.6 in) Wheelbase: 2265 mm (89.2 in) Weights Curb Weight: 955 kg (2,105 lbs) Gross Vehicle Weight Rating: 1250 kg (2756 lbs) 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4 Stars Active Features Braking System: Front Disc, Rear Drum (standard); Optional Front/Rear Discs (Sport Package) Steering Type: Rack and Pinion, Power Assisted (standard) Passive Features Airbags: Driver-side airbag standard in many markets by 1990. Seatbelts: 3-point front seatbelts 💡 Technology Features Infotainment Audio System: Factory AM/FM/Cassette player, optional CD player. Driver Assistance ABS: Optional Anti-lock Braking System (ABS) on some models. Connectivity Cruise Control: Optional cruise control. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles or 6 months Air Filter Replacement: Every 15,000 miles or 12 months Spark Plug Replacement: Every 30,000 miles Fluid Specifications Engine Oil Type: API SG/SH, SAE 10W-30 Recommended Coolant Type: Mazda coolant or equivalent (50/50 mix of ethylene glycol and distilled water) Brake Fluid Type: DOT 3 Transmission Fluid Type Manual: API GL-4, SAE...