🏷️ Basic Information

Make:

Mazda

Model:

Miata

Generation:

First Generation (NA)

Chassis Code:

NA0 (North America), Eunos Roadster (Japan), MX-5 (Europe)

Engine Codes:

B6ZE-R

Transmission Codes:

M5 (Manual), G4A-EL (Automatic - less common for this era, but possible)

👋 Introduction

Target Audience:

Enthusiast owners, DIY mechanics, professional repair shops specializing in classic sports cars.

Key Selling Point:

Empowers owners to maintain and repair their beloved NA Miata, preserving its iconic status and ensuring longevity.

Competitor Manuals:

Haynes, Chilton (often less detailed than factory service manuals), owner's manuals (too basic).

Feature 1:

Authoritative and complete repair information directly from the manufacturer's technical documentation.

Feature 2:

Detailed illustrations, diagrams, and exploded views for clarity.

Feature 3:

Step-by-step instructions for complex procedures.

Feature 4:

Troubleshooting guides to quickly diagnose and resolve issues.

Feature 5:

Essential for restoring or maintaining an iconic classic sports car.

📋 Manual Details

Manual Type:

Digital Workshop Repair Manual

Language:

English

Format:

Digital (likely PDF or similar e-book format)

Page Count:

Estimated 500-800+ pages (typical for comprehensive workshop manuals of this era)

Coverage Years:

1991-1992

📖 Manual Coverage

Engine:

Engine mechanical, lubrication system, cooling system, fuel system (EFI), ignition system, emissions control, engine diagnostics, performance tuning.

Transmission:

Manual transmission (removal, installation, disassembly, assembly, repair), clutch system, automatic transmission (if applicable for specific models covered, though less common for this manual's focus).

Drivetrain:

Driveshafts, differential, rear axle assembly, wheel bearings.

Suspension:

Front suspension (double wishbone), rear suspension (multi-link), shock absorbers, springs, bushings, steering knuckle, alignment procedures.

Steering:

Steering column, steering rack, power steering system (if equipped), steering linkage.

Brakes:

Front disc brakes, rear disc brakes, hydraulic system, ABS (if equipped), parking brake, brake fluid specifications and bleeding procedures.

Electrical:

Battery, charging system (alternator, starter), lighting system (headlights, taillights, interior), ignition system, fuel injection control, instrument cluster, power windows, power mirrors, fuses, relays, wiring diagrams.

Body:

Body structure, exterior panels, doors, hood, trunk lid, convertible top mechanism, interior trim, seats, body seals, anti-corrosion measures.

Heating Ventilation Air Conditioning:

HVAC system components, refrigerant, heater core, A/C compressor, blower motor, climate controls, dash removal for access.

Maintenance:

Routine maintenance, oil changes, filter replacements, spark plug service, coolant flushes, brake fluid changes, tire rotation, belt inspections.

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting, common issues and their resolutions, electrical circuit diagnosis, engine performance issues.

Repair:

Engine component repair/rebuild (pistons, rings, valves, bearings), transmission overhaul, brake caliper replacement, suspension component replacement, electrical component repair, body panel repair, convertible top repair.

Diagnostics:

On-board diagnostic (OBD-I) codes and interpretation, sensor testing, actuator testing, multimeter usage for electrical diagnostics.

Adjustments:

Idle speed adjustment, throttle position sensor (TPS) adjustment, ignition timing adjustment (if applicable for the era), clutch adjustment.

Installation:

Component installation (e.g., new engine, transmission, suspension parts), accessory installation (if covered).

Depth:

Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls. Includes detailed component diagrams, torque specifications, clearances, and specialized tool requirements.

📊 Manual Specifications

File Type:

Digital Download (PDF, EPUB, etc.)

Searchability:

Likely searchable text, allowing quick access to specific topics.

Printable:

Yes, typically designed for printing specific sections or the entire manual.

Binding:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Inline 4-cylinder, DOHC, 16-valve

Displacement:

1.6 Liters (1597 cc)

Bore X Stroke:

78.0 mm x 83.6 mm

Compression Ratio:

9.4:1

Fuel Delivery:

Electronic Fuel Injection (EFI) - Sequential Multi-port Fuel Injection (SMPI)

Horsepower:

115 hp @ 6500 rpm (approx.)

Torque:

100 lb-ft @ 5000 rpm (approx.)

Fuel Type:

Unleaded Gasoline (87 octane or higher recommended)

Fuel Tank Capacity:

45 Liters (11.9 US Gallons)

🔧 Transmission

Transmission Type:

5-Speed Manual Transmission

Transmission Type:

4-Speed Automatic Transmission (less common, typically denoted by G4A-EL)

Clutch Type:

Hydraulic, Dry Single Plate

Manual Transmission Fluid:

API GL-4, SAE 75W-90 (check specific manual for exact spec)

Automatic Transmission Fluid:

Dexron III or equivalent (check specific manual for exact spec)

📐 Dimensions

Length:

3955 mm (155.7 in)

Width:

1675 mm (66.0 in)

Height:

1235 mm (48.6 in)

Wheelbase:

2265 mm (89.2 in)

Front Track:

1420 mm (55.9 in)

Rear Track:

1430 mm (56.3 in)

Curb Weight:

Approx. 950-1000 kg (2094-2205 lbs) depending on options

Gross Vehicle Weight Rating:

Approx. 1250 kg (2755 lbs)

🛡️ Safety Features

NHTSA Front Crash Test:

4/5 Stars (1992 model)

Braking System:

Standard: Front Ventilated Discs, Rear Solid Discs. Optional: Anti-lock Braking System (ABS) on some models.

Traction Control:

Not typically equipped on these early models.

Airbags:

Driver-side airbag standard from 1992 model year onward. Passenger airbag not available.

Seat Belts:

Three-point inertia reel seatbelts

Rollover Protection:

Reinforced A-pillars and optional factory-style or aftermarket roll bars.

💡 Technology Features

Head Unit:

Factory AM/FM/Cassette player. Optional CD player on later models or aftermarket upgrades common.

Speakers:

Typically 4 speakers (door-mounted and dashboard).

Cruise Control:

Optional on some trims.

Anti Lock Brakes:

Optional on some trims (see safety section).

Bluetooth:

Not factory equipped.

Usb Ports:

Not factory equipped.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months.

Spark Plug Replacement:

Every 30,000 miles (48,000 km).

Coolant Flush:

Every 2 years or 30,000 miles (48,000 km).

Timing Belt Replacement:

Every 60,000 miles (96,000 km) or 5 years. Crucial maintenance item for B6 engine.

Engine Oil Capacity:

3.7 US Quarts (3.5 Liters) with filter change (using 10W-30 or 5W-30)

Engine Oil Specification:

API SG or SH, SAE 10W-30 or 5W-30 (verify with manual)

Coolant Type:

Ethylene glycol-based coolant (50/50 mix with distilled water)

Brake Fluid Type:

DOT 3 or DOT 4 (verify with manual)

Power Steering Fluid:

Dexron II or equivalent (if power steering equipped, less common on base models)

Common Issue 1:

Oil leaks from valve cover gasket and rear main seal.

Common Issue 2:

Cooling system leaks, especially radiator and hoses.

Common Issue 3:

Radiator fan switch failure leading to overheating.

Common Issue 4:

EGR valve issues and related engine performance problems.

Common Issue 5:

Window motor failure and convertible top mechanism issues.

Common Issue 6:

Worn clutch components and throw-out bearing noise.

Common Issue 7:

Corrosion on chassis and sills, particularly in areas with road salt exposure.

📚 Vehicle History

Mazda Philosophy:

Jinba Ittai (Horse and Rider as One) - focusing on driver connection and feedback.

Concept Origin:

Inspired by classic British roadsters like the Lotus Elan and MG MGB.

Launch Year:

1989 (introduced as a 1990 model year vehicle in most markets)

Manufacturing Location:

Hofu, Yamaguchi Prefecture, Japan

Na Generation Production Years:

1989-1997

🏆 Awards & Recognition

Car And Driver 10 Best:

Named to Car and Driver's 10Best list for 1990, 1991, and 1992.

Automobile Magazine All Star:

Received Automobile Magazine All-Star awards in its early years.

Popular Mechanics Car Of The Year:

Recognized by various publications for its exceptional value and driving dynamics.