🏷️ Basic Information Identification Make: Subaru Model: Legacy B4 Generation: First Generation Codes Chassis Codes: BD, BG, BK 👋 Introduction Market Position Segment: Mid-size sedan/wagon, performance-oriented variant Competitive Analysis Competitors: Mitsubishi Galant VR-4, Nissan Maxima, Toyota Camry Key Features Distinctive Features: Standard Symmetrical All-Wheel Drive, turbocharged engines (in many B4 variants), sporty handling Manual Value Proposition Value: Essential for owners and independent mechanics seeking to maintain and repair this performance-oriented Subaru model. 📋 Manual Details Coverage Areas Languages: English Regions Covered: Global (focus on markets where B4 variant was prevalent) Page Count Estimated Pages: 500+ Manual Type Type: Workshop Service Repair Manual Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, cooling system, exhaust system, lubrication system Drivetrain: Manual transmission, automatic transmission, front differential, rear differential, driveshafts, AWD system Suspension Steering: Front suspension, rear suspension, steering system, power steering Brakes: Brake system, ABS (Anti-lock Braking System), brake components, hydraulic system Electrical: Wiring diagrams, battery, charging system, starting system, lighting system, instrumentation, comfort controls Body: Exterior panels, interior trim, doors, windows, body sealing, chassis Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Troubleshooting: Diagnostic charts, symptom-based troubleshooting, fault code interpretation Repair: Component removal and installation, overhaul procedures, adjustments Diagnostics: Engine control module (ECM) diagnostics, sensor testing, actuator testing Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) 📊 Manual Specifications File Format File Type: PDF Print Quality Quality: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Codes: EJ20, EJ22, EJ25 (specific to B4 variants, including turbo variants like EJ20G) Performance Horsepower Range: 125-220 HP (Naturally Aspirated and Turbocharged variants) Torque Range: 137-275 lb-ft (Naturally Aspirated and Turbocharged variants) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Turbocharged models feature sequential multi-point fuel injection Engine Layout Layout: Horizontally-opposed (Boxer) Turbocharging Turbo Models: Many B4 variants were turbocharged, significantly enhancing performance. 🔧 Transmission Standard Transmission Type: 5-speed Manual Transmission Optional Transmission Type: 4-speed Automatic Transmission Features Drivetrain System: Symmetrical All-Wheel Drive (AWD) standard across most trims. Fluid Specification Manual Transmission Fluid: API GL-5, SAE 75W-90 (typical specification) Automatic Transmission Fluid: Dexron-III or equivalent (typical specification) 📐 Dimensions Exterior Body Styles: 4-door Sedan, 5-door Wagon Wheelbase: Approx. 104.3 inches (2649 mm) Length: Approx. 178.7 - 183.1 inches (4539 - 4651 mm) depending on body style Width: Approx. 67.3 - 68.5 inches (1709 - 1740 mm) Height: Approx. 55.5 - 58.3 inches (1410 - 1481 mm) depending on body style Weights Curb Weight Range: Approx. 3000 - 3300 lbs (1360 - 1500 kg) 🛡️ Safety Features Ratings NHTSA Ratings: Varies by specific model year and testing protocols of the era. Not directly comparable to modern ratings. Active Features ABS: Available on many models, especially higher trims and turbocharged variants. AWD: Standard Symmetrical All-Wheel Drive contributes to enhanced traction and stability. Passive Features Airbags: Driver and front passenger airbags were becoming standard during this period. Side airbags were not common. Seatbelts: Three-point seatbelts for all occupants. 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM/Cassette or CD player, with optional upgrades. Manual covers basic electrical connections. Driver Assistance Traction Control: Not typically available in this generation. Connectivity Cruise Control: Available on most models. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles or 3-6 months (refer to manual for precise recommendation based on driving conditions). Timing Belt Replacement: Critical for EJ series engines. Typically recommended every 60,000-90,000 miles or 5-7 years. Refer to manual for specific mileage. Fluid Specifications Engine Oil: API SG/SH or higher, SAE 10W-30 or 5W-30 (check manual for exact viscosity based on ambient temperature). Coolant: Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Consult manual for specific Subaru coolant type. Brake Fluid: DOT 3 or DOT 4. Power Steering Fluid: Dexron-II/III or equivalent (check manual). Known Issues Head Gaskets: While more prevalent in later EJ engines, early models can experience head gasket leaks. The manual will detail inspection and replacement procedures. Turbocharger Maintenance: Turbocharged models require meticulous maintenance, including regular oil changes and ensuring proper cool-down periods. Manual covers turbo servicing. Suspension Wear: Typical for vehicles of this age, components like bushings and ball joints may require replacement. Manual provides inspection and replacement guides. 📚 Vehicle History Brand Heritage Subaru Legacy Origin: Subaru has a long history of building reliable, AWD vehicles, a tradition continued with the Legacy. Model Evolution First Gen Introduction: The first generation Subaru Legacy was introduced in 1989, replacing the Subaru Leone. B4 Significance: The 'B4' designation often refers to the sedan body style, and frequently encompasses the turbocharged performance variants (like the GT and RS models). Production Production Years: 1989-1994 (for this manual's coverage) Production Locations Manufacturing: Primarily manufactured in Japan. 🏆 Awards & Recognition...