🏷️ Basic Information Identification Make: Škoda Model: 105 / 120 Model Variants: 105 S (Standard), 105 L (Lux), 120 L (Lux), 120 LS (Lux Sport), 120 GLS (Grand Lux Sport) Codes Chassis Codes: Škoda Typ 742 👋 Introduction Market Position Vehicle Class: Compact/Small Family Car (Rear-engine, Rear-wheel drive) Target Audience: Economical transportation for individuals and families in Eastern Bloc countries and export markets. Competitive Analysis Competitors: Lada Riva/Classic, Dacia 1310, Ford Escort (Mk II/III), Opel Kadett (D), Volkswagen Golf (Mk I/II) in certain markets. Key Features Design Philosophy: Simple, robust, rear-engine, rear-wheel-drive layout offering good weight distribution and traction in challenging conditions. Manual Value Proposition: Provides access to professional-level diagnostic and repair information, enabling owners and independent workshops to maintain and repair these vehicles effectively. 📋 Manual Details Coverage Areas Models Covered: Škoda 105 S, 105 L, 120 L, 120 LS, 120 GLS Production Years Covered: 1976 - 1990 Page Count Estimated Page Count: Refer to actual manual content for precise count; typically 300-600+ pages for comprehensive service manuals of this era. Manual Type Type: Service and Repair Manual Language Language: Likely English (based on common import manual translations), may also be available in original Czech or other European languages. Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Engine overhaul, tuning, lubrication, cooling, fuel delivery, ignition system, emission control (where applicable). Transmission: Clutch, gearbox (manual), driveshafts, differential, shift linkage. Suspension: Front suspension (independent, coil springs, wishbones), rear suspension (semi-trailing arms, coil springs), shock absorbers, steering linkage. Brakes: Front disc brakes, rear drum brakes, hydraulic system, parking brake, brake bleeding procedures. Electrical: Wiring diagrams, battery, alternator, starter motor, lighting system, instrumentation, ignition switch, fuses. Body And Chassis: Body shell construction, doors, hood, trunk lid, interior trim, glass, bumpers, jacking points. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, lubrication points, belt adjustments. Diagnostics: Troubleshooting guides, symptom-based diagnosis, identification of common faults. Repair: Step-by-step repair instructions for all major components and systems, component removal and installation. Adjustments: Carburetor adjustment, ignition timing, valve clearance adjustment, brake adjustment. Technical Depth Depth: Comprehensive, covering from routine maintenance to full engine and transmission rebuilds. Suitable for professional technicians and experienced DIY mechanics. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF for efficient information retrieval. Print Quality Printability: High-resolution, printable pages for practical use in a workshop environment. Binding Type Binding: N/A (Digital format implies no physical binding) Paper Type Paper Quality: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Family: Škoda 742 Series (OHV Inline-4) Displacement 105: 1.05 L (1046 cc) Displacement 120: 1.2 L (1174 cc) Performance Horsepower 105: Approx. 46-50 PS (34-37 kW) at ~5000 rpm Horsepower 120: Approx. 54-58 PS (40-43 kW) at ~5000 rpm Torque 105: Approx. 72-75 Nm (53-55 lb-ft) at ~3000-3500 rpm Torque 120: Approx. 82-86 Nm (60-63 lb-ft) at ~3000-3500 rpm Fuel System Carburetor: Single-barrel downdraft carburetor (e.g., Jikov, Weber variants). Fuel Type: Unleaded gasoline (later models) or Leaded gasoline (earlier models), octane rating typically 86-91 RON. 🔧 Transmission Standard Type: 4-speed manual transaxle. Optional Type: 5-speed manual transaxle (introduced later, particularly on higher trims like GLS). Features Drive Layout: Rear-wheel drive. 📐 Dimensions Exterior Length: Approx. 4180 mm (164.6 in) Width: Approx. 1600 mm (63.0 in) Height: Approx. 1400 mm (55.1 in) Wheelbase: Approx. 2400 mm (94.5 in) Weights Curb Weight: Approx. 900-950 kg (1984-2094 lbs), depending on model and equipment. 🛡️ Safety Features Ratings Crash Test Results: N/A (No standardized crash testing conducted by independent bodies during the primary production era for this vehicle class in its target markets). Active Features Brakes: Front disc, rear drum brakes; dual-circuit hydraulic system. Steering: Recirculating ball steering system. Passive Features Seatbelts: Front seatbelts standard, rear seatbelts optional or market-dependent. Construction: Integral body-chassis construction for rigidity. 💡 Technology Features Infotainment Radio: Typically an optional AM/FM radio or radio-cassette player. Aftermarket installations common. Driver Assistance Features: None in the modern sense. Focus is on basic mechanical reliability. Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change: Every 5,000 - 7,500 km (approx. 3,000 - 4,500 miles) or 6-12 months, whichever comes first. Air Filter: Replace or clean at ~10,000 km (6,000 miles) intervals. Spark Plugs: Inspect/replace at ~10,000 - 15,000 km (6,000 - 9,000 miles) intervals. Valve Adjustment: Check and adjust every 15,000 - 20,000 km (9,000 - 12,000 miles). Fluid Specifications Engine Oil: API SF/CD or SG/CD; SAE 20W-50 or 15W-40 (depending on climate). Capacity: Approx. 3.5 liters with filter. Coolant: Ethylene glycol-based antifreeze (50% mixture with distilled water). Capacity: Approx. 7 liters. Gearbox Oil: API GL-4 SAE 75W-90 or 80W-90 gear oil. Capacity: Approx. 1.5 - 1.8 liters. Brake Fluid: DOT 3 or DOT 4 hydraulic brake fluid. Capacity: Varies by system, check reservoir. Known Issues Rust Corrosion: Common issue due to manufacturing standards and climate, especially in wheel...