🏷️ Basic Information Identification Make: Citroën Model: GS / GSA Model Code: Series 1 GS (1970-1978), Series 2 GS (1979-1986), GSA (1980-1986) Body Styles: 2-door saloon, 4-door saloon, 5-door estate (Break/Kombi) Generation Generation Name: First Generation Generations Covered: Series 1 (1971-1978) and Series 2 (1979-1986) GS, GSA models Codes Vin Prefix: Variable by engine and model year, generally starting with 'F' or 'Y' 👋 Introduction Market Position Market Segment: Compact family car, known for innovative design and advanced engineering for its era Competitive Analysis Key Competitors: Renault 12, Peugeot 304, Ford Escort Mk1/Mk2, Volkswagen Golf Mk1 Key Features Distinguishing Features: Hydropneumatic suspension, distinctive 'floating' dashboard, aerodynamic styling, transverse engine layout Manual Value Proposition: Empowers owners and technicians with detailed, step-by-step procedures for maintenance and repair, reducing reliance on expensive dealer services and enabling cost-effective ownership. 📋 Manual Details Coverage Areas Covered Years: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Page Count Estimated Page Count: Over 500 pages (estimated for comprehensive service manuals of this era) Manual Type Manual Type: Service and Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip/equivalent decompression software Specifications Printability: Fully Printable Zoom Capability: Zoom IN/OUT supported 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanicals, lubrication, cooling, fuel system, ignition system, exhaust system, emission control Transmission Systems: Manual gearbox, Hydropneumatic suspension (integrated transmission/suspension components), clutch operation Chassis Systems: Suspension (hydropneumatic), steering, brakes (disc front, drum rear), wheels and tires Electrical Systems: Wiring diagrams, lighting, ignition, charging system, instrumentation, accessories Body And Interior: Bodywork repairs, trim, glass, seating, interior panels Procedures Included Maintenance Procedures: Scheduled maintenance, fluid changes, filter replacements, tune-ups, lubrication points Repair Procedures: Step-by-step instructions for component disassembly, repair, and reassembly Troubleshooting: Diagnostic procedures for common problems, fault finding guides Technical Data: Torque specifications, clearances, electrical resistance values, component tolerances Technical Depth Depth Of Coverage: Comprehensive, covering routine maintenance to major overhauls and repairs Diagnostic Level: Detailed diagnostic trees and common fault identification 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Print Quality: High resolution for clear text and images; suitable for printing individual pages or the entire document Binding Type Binding Type: Digital (PDF), no physical binding Paper Type Paper Type: N/A (Digital Format) Compatibility Operating System Compatibility: All Versions of Windows and macOS ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, flat-four (boxer) engine Displacement Gs: 1015 cc (GS model), 1220 cc (later GS models) Displacement Gsa: 1220 cc (GSA model), 1299 cc (GSA Club/Special models) Performance Horsepower Gs 1015Cc: 56 hp (DIN) @ 6750 rpm Torque Gs 1015Cc: 72 Nm (53 lb-ft) @ 3000 rpm Horsepower Gs 1220Cc: 60 hp (DIN) @ 5500 rpm (standard), 72 hp (DIN) @ 6000 rpm (1220cc Pallas/GSA) Torque Gs 1220Cc: 91 Nm (67 lb-ft) @ 3000 rpm (standard), 101 Nm (74 lb-ft) @ 3000 rpm (1220cc Pallas/GSA) Horsepower Gsa: 65 hp (DIN) @ 5500 rpm (1220cc), 71 hp (DIN) @ 5750 rpm (1299cc) Torque Gsa: 97 Nm (72 lb-ft) @ 3000 rpm (1220cc), 107 Nm (79 lb-ft) @ 3000 rpm (1299cc) Fuel System Fuel Delivery: Carburetor (Zenith or Solex twin-choke typically) Fuel Type: Unleaded Petrol (from 1970s onwards, leaded initially) Engine Layout Engine Configuration: Transverse, mid-engine 🔧 Transmission Standard Transmission Type Standard: 4-speed manual transaxle Optional Transmission Type Optional: 3-speed semi-automatic (Citroën C-Matic) on some GS models Features Transmission Features: Integrated with suspension hydraulics on some models, compact unit 📐 Dimensions Exterior Length: Approx. 4120 mm (162.2 in) Width: Approx. 1620 mm (63.8 in) Height: Approx. 1350 mm (53.1 in) Wheelbase: Approx. 2600 mm (102.4 in) Weights Curb Weight: Approx. 950 - 1050 kg (2094 - 2315 lbs) depending on model and specification 🛡️ Safety Features Ratings Crash Test Era: Pre-modern crash testing standards, focused on structural integrity Active Features Braking System: Hydraulically assisted disc brakes front, drum brakes rear. Unique 'DIRAVI' power steering on later models, and a single brake pedal for all braking functions. Some models had a brake pressure regulator. Passive Features Seatbelts: Front seatbelts standard, rear seatbelts often optional or not fitted initially. Body Structure: Monocoque construction with integrated chassis elements. Designed with crumple zones. 💡 Technology Features Infotainment Radio System: Optional factory-fitted or dealer-installed radio, typically AM/FM or LW/MW. Driver Assistance Adaptive Features: Hydropneumatic suspension provides self-leveling and adjustable ride height, offering a unique 'magic carpet' ride. Connectivity Connectivity Features: Basic; primarily focused on the car's mechanical and electrical systems. No modern connectivity options like Bluetooth or USB. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 km (3,000 - 4,500 miles) or annually, whichever comes first (refer to manual for specific grade). Tune Up Interval: Spark plug replacement, ignition timing adjustment generally every 10,000 - 15,000 km (6,000 - 9,000 miles). Fluid...