Market Segment:
Compact AWD/4WD passenger car and wagon.
Key Competitors:
Toyota Corolla/Cavalier, Honda Civic/Accord, Nissan Sentra/Stanza, Mazda 323/626, Mitsubishi Lancer/Galant.
Unique Selling Proposition:
Subaru's signature Symmetrical All-Wheel Drive (AWD) system, robust engineering, and Boxer engine layout provided superior traction and handling in various conditions.
Intended User:
DIY mechanics, independent repair shops, Subaru enthusiasts looking for detailed repair and maintenance information.
Manual Coverage Years:
1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
Estimated Page Count:
1500+
Manual Type:
Workshop Service Repair Manual (Factory Service Manual)
Digital Format:
Downloadable Digital File (likely PDF)
Powertrain Systems:
Engine mechanical (EA71, EA81, EA82 series), Engine control systems (ECU/EFI diagnostics, ignition), Fuel system (carburetor & EFI), Exhaust system, Clutch, Manual transmission, Automatic transmission (4EAT, 5EAT), Drivetrain (front, rear, center differentials, AWD systems).
Chassis Systems:
Suspension (front struts, rear independent suspension/multi-link), Steering system (power steering diagnostics), Brakes (front disc, rear drum/disc, ABS diagnostics for later models), Wheels and tires.
Electrical Systems:
Wiring diagrams, lighting, instrumentation, charging system (alternator, battery), starting system, power accessories, climate control system.
Body Systems:
Body construction, exterior panels, doors, windows, interior trim, HVAC system, body electrical components.
Maintenance Procedures:
Scheduled maintenance, fluid changes (oil, coolant, transmission fluid), filter replacements, lubrication, belt inspection/replacement.
Diagnostic Procedures:
Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) for applicable models, electrical system fault finding.
Repair Procedures:
Step-by-step instructions for major component removal and installation, engine overhaul, transmission rebuild, brake service, suspension component replacement, body panel repair.
Technical Adjustments:
Engine timing adjustments, carburetor adjustments, clutch adjustment, alignment specifications, brake bleeding procedures.
Depth Of Coverage:
Comprehensive: Covers basic maintenance to complete engine and transmission overhauls, detailed electrical diagnostics, and bodywork.
Digital File Type:
PDF (Portable Document Format)
Searchability:
Likely searchable text-based PDF, allowing for keyword searching of specific components or procedures.
Digital Print Quality:
High resolution, suitable for printing individual pages or sections.
Original Binding:
N/A (Digital Download)
Original Paper Type:
N/A (Digital Download)
Engine Family:
Subaru EA series Boxer (horizontally opposed)
Common Engine Variants:
EA71 (1.6L), EA81 (1.8L), EA82 (1.8L SOHC/DOHC, Turbocharged)
Horsepower Range:
Approx. 70 hp (EA71) to 135 hp (EA82 Turbocharged)
Torque Range:
Approx. 80 lb-ft (EA71) to 134 lb-ft (EA82 Turbocharged)
Fuel Delivery Options:
Carbureted (Keihin, Hitachi) or Electronic Fuel Injection (EFI) depending on model year and trim.
Fuel Type:
Unleaded Gasoline
Engine Layout:
Horizontally Opposed (Boxer)
Standard Transmission Type:
4-speed Manual Transmission
Optional Transmission Type:
5-speed Manual Transmission, 3-speed Automatic Transmission, 4-speed Automatic Transmission (4EAT, introduced in later years for certain models).
Drivetrain Configuration:
Full-Time All-Wheel Drive (AWD) or Part-Time 4-Wheel Drive (4WD) depending on model/trim.
Body Styles:
4-door Sedan, 5-door Wagon, 3-door Hatchback, 5-door Hatchback/Wagon (depending on specific model generation designation within GL-10 range).
Curb Weight Range:
Approx. 2200-2700 lbs (1000-1225 kg)
Gross Vehicle Weight Rating Range:
Approx. 3300-3800 lbs (1500-1725 kg)
Safety Ratings Era:
Pre-NHTSA prominent ratings for this era; focus on passive safety features.
Active Safety Features:
Subaru's Symmetrical AWD for enhanced traction and stability, front disc brakes, rear drum brakes (later models may feature rear discs on higher trims). ABS availability on later models.
Passive Safety Features:
Collapsible steering column, reinforced safety cage, three-point seatbelts (lap belts in rear sometimes), padded interior surfaces.
Infotainment System Era:
Basic for the era: AM/FM radio, cassette player, optional graphic equalizer or premium sound system.
Driver Assistance Features:
Limited to the AWD/4WD system for traction. ABS became available on higher trims and later models within this range.
Connectivity Features:
N/A (No modern connectivity features like Bluetooth or USB).
Oil Change Interval:
Typically every 3,000-5,000 miles (5,000-8,000 km) or 3-6 months, depending on driving conditions and specific engine oil used.
Engine Coolant Change Interval:
Every 24,000-30,000 miles (40,000-50,000 km) or 2-3 years, using Subaru-specific coolant or a compatible type.
Timing Belt Replacement Interval:
For EA82 engines, typically 60,000 miles (96,000 km). Crucial for preventing catastrophic engine damage.
Engine Oil Specification:
API SG or higher, SAE 10W-30 or 10W-40 typically recommended (refer to manual for specific viscosity based on temperature).
Transmission Fluid Specification Manual:
API GL-5, SAE 75W-90 or 75W-140 for manual gearboxes and differentials.
Transmission Fluid Specification Automatic:
ATF Dexron-II or equivalent for 3-speed and 4EAT transmissions. Consult manual for exact specification.
Coolant Specification:
Ethylene glycol-based antifreeze. Subaru may have specific recommendations, but a 50/50 mix of quality antifreeze and distilled water is standard.
Common Wear Items:
Radiator hoses, heater hoses, brake components (pads, rotors, lines), suspension bushings, CV joints (especially on AWD models), clutch wear.
Engine Specific Issues:
Head gasket leaks (especially on EA82 DOHC engines), oil leaks from seals/gaskets, carburetor issues (on carbureted models), turbocharger failure (on turbo models).
Drivetrain Specific Issues:
Transfer case wear, differential leaks, especially if AWD system is not properly maintained.
Subaru Heritage:
Subaru (Fuji Heavy Industries) has a long history of producing rugged, reliable vehicles, particularly known for their Boxer engines and AWD systems, dating back to the mid-20th century.
Leone Platform Context:
The GL-10 designation is associated with Subaru's Leone platform, which was in its third generation during these years (1984-1994). This generation saw significant updates to styling, chassis, and powertrains, including the introduction of fuel injection and turbocharging.
Production Period For Model Line:
The Leone platform was produced from 1971 to 1994. The GL-10 designation specifically denotes higher-trim variants, often equipped with more powerful engines and AWD.
Manufacturing Locations:
Primarily Japan (Gunma Plant), with some assembly in other regions over the years.
