🏷️ Basic Information Identification Make: Mazda Model: Miata Generation: NA (First Generation) Codes Engine Codes: B6Z (1.6L DOHC) 👋 Introduction Market Position Positioning: The definitive guide for owners and mechanics of the iconic 1991 Mazda Miata (NA generation), offering factory-level repair and maintenance information. Competitive Analysis Comparison: Provides the same level of detail and accuracy as dealership-issued service manuals, crucial for maintaining the unique driving experience of the early Miata. Key Features Unique Selling Proposition: Offers detailed illustrations, numbered instructions, troubleshooting guidance, and comprehensive wiring diagrams, making complex repairs accessible to enthusiasts. Target Audience Audience: DIY enthusiasts, amateur mechanics, professional automotive technicians, and collectors of the first-generation Mazda Miata. 📋 Manual Details Coverage Areas Trim Levels Covered: All styles/trims for 1991 model year Geographic Coverage: Global (based on common specifications for the 1991 model) Page Count Total Pages: 600+ Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital PDF 📖 Manual Coverage Systems Covered Engine: Complete engine mechanical, engine control system, SFI system, lubrication system, cooling system (including radiator, water pump, thermostat), fuel system, ignition system, starting system, charging system. Transmission: Manual Transaxle System (including assembly, torque converter clutch, oil specifications), clutch unit, clutch system, clutch pedal, clutch master/release cylinders. Brakes: Brake system, brake actuator, brake booster, brake master cylinder, brake fluid, brake pedal, rear brake, parking brake system, parking brake cable, parking brake lever. Suspension And Steering: Front suspension, rear suspension, rear axle beam, rear suspension system, steering system, steering column, power steering, steering sensor. Wheels And Tires: Wheel and tire system, tire & wheel specifications, rear wheel alignment. Electrical: Wiring diagrams, wire harness repair, ignition system, starting system, charging system, lighting system, combination meter, instrument panel, power window control system, power door lock control system, power mirror control system. Body And Interior: Body repair, hood, roof headlining, roof drip side finish moulding, rear door, rear door glass weatherstrip, rear door window frame moulding, side mudguard, windshield glass, windshield wiper switch, windshield wiper motor, rear wiper motor, washer system, sunroof system. Safety And Restraint: Supplemental Restraint System (SRS), seat belt, seat belt warning system, curtain shield air bag assembly, passenger air bag assembly, side air bag sensor assembly, center air bag sensor assembly, seat position air bag sensor, yaw rate sensor. Emissions And Exhaust: Emission Control Systems, charcoal canister, knock sensor. Procedures Included Maintenance: Scheduled maintenance, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, lubrication. Diagnostics: Troubleshooting guides for various systems, electrical system diagnostics, component testing. Repair And Rebuild: Detailed step-by-step repair procedures for major components, engine disassembly/assembly, transmission overhaul, brake caliper rebuild, suspension component replacement. Installation: Procedures for installing new or replacement parts, alignment adjustments. Electrical Troubleshooting: Diagnosis and repair of electrical faults, including detailed wiring diagrams. Technical Depth Depth: Comprehensive (suitable for DIY enthusiasts and professional mechanics), covers everything from basic maintenance to complete engine and transmission rebuilds. Illustrations: Hundreds of photos and detailed illustrations, drawings, and enlarged inset views. Instruction Format: Numbered step-by-step instructions, detailed sub-steps, notes, cautions, and warnings. 📊 Manual Specifications File Format Format: PDF Compatibility: Windows, Mac, Linux Print Quality Printability: Fully printable, all pages are printable without restriction. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Completeness Completeness Assurance: 100% complete and intact, no missing or corrupt pages/sections. ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-Cylinder, DOHC (Dual Overhead Camshaft) Engine Code: B6Z Displacement: 1.6 Liters (1597 cc) Performance Horsepower: 118 hp @ 6500 rpm (approximate, depending on market and specific tune) Torque: 100 lb-ft @ 5000 rpm (approximate, depending on market and specific tune) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Sequential Multi-Port Fuel Injection (SFI System) Fuel Type: Unleaded Gasoline Engine Mechanical Bore X Stroke: 78.0 mm x 83.6 mm Compression Ratio: 9.5:1 Valve Train: Dual Overhead Camshafts (DOHC), 16 valves Timing Mechanism: Timing Belt 🔧 Transmission Standard Transmission Type: 5-Speed Manual Transaxle Optional Transmission Type: 4-Speed Automatic (less common for enthusiasts, but covered in comprehensive manuals) Features Clutch Type: Hydraulically Actuated Single Dry Plate Maintenance Manual Transmission Fluid Spec: API GL-4, SAE 75W-90 (check manual for exact fill volume and specific manufacturer recommendation) Automatic Transmission Fluid Spec: Dexron II or equivalent (check manual for exact fill volume) 📐 Dimensions Exterior Length: 3,955 mm (155.7 in) Width: 1,675 mm (65.9 in) Height: 1,235 mm (48.6 in) (soft top up) Wheelbase: 2,265 mm (89.2 in) Weights Curb Weight: Approx. 960 kg (2,116 lbs) (manual transmission) Weight Distribution: Near 50/50 front/rear (a key design feature) 🛡️ Safety Features Ratings Crash Test Results: Limited structural protection due to compact design; emphasis on driver agility. Consult official NHTSA or IIHS reports for specific year and trim data. Active Features Active Safety: ABS (Anti-lock Braking System) - available on some later 1991 models and optional trims. Passive Features Passive Safety: Driver's airbag,...