🏷️ Basic Information Identification Make: Citroën Model: GS / GSA Generation Generation Name: First Generation (GS) Generation Years: 1970-1986 Codes Model Codes: Citroën GS, Citroën GSA (post-1980 facelift) 👋 Introduction Market Position Target Audience: Citroën GS/GSA owners, enthusiasts, mechanics, and restoration specialists. Competitive Analysis Comparison To Alternatives: Haynes manuals are renowned for their practical, DIY-focused approach, often more detailed for repair than official factory manuals for home mechanics. Key Features Accessibility: Instant digital download provides immediate access to critical repair and maintenance information. Information Source: Technical details directly from the manufacturer, compiled by skilled mechanics. Usability: Step-by-step instructions, accompanied by pictures and diagrams, simplify complex procedures. 📋 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: 400-600 (Typical for Haynes Comprehensive Manuals) Manual Type Type: Service and Repair Manual (Owners Workshop Manual) Language Language: English (Presumed, based on 'Haynes') Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Detailed coverage of all engine variants, including overhaul, tuning, and troubleshooting. Fuel System: Carburetor (Zenith, Solex), fuel pumps, lines, and tank maintenance. Cooling System: Radiator, hoses, water pump, thermostat, and fan assembly. Ignition System: Distributor, coil, spark plugs, and ignition timing. Exhaust System: Exhaust manifolds, pipes, muffler, and catalytic converter (for later models). Transmission: Manual and automatic gearbox overhauls, clutch replacement, and driveshaft maintenance. Suspension: Citroën's signature Hydropneumatic suspension system coverage, including spheres, fluid, and height regulation. Brakes: Hydraulic brake system, discs, pads, calipers, master cylinder, and brake fluid. Steering: Steering rack, column, and power steering system (if applicable). Electrical System: Wiring diagrams, battery, alternator, starter, lighting, and accessory circuits. Bodywork And Chassis: Panel repair, rust prevention, door mechanisms, and trim. Heating And Ventilation: Heater core, fan, and ducting. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement, and tune-ups. Troubleshooting: Systematic diagnostic procedures for common faults and drivability issues. Component Overhaul: Detailed instructions for engine, transmission, suspension, and brake component rebuilds. Assembly Disassembly: Step-by-step guidance for removal and installation of various vehicle components. Painting And Finishing: Guidance on body repairs, preparation, and painting techniques. Technical Depth Diagnostic Capabilities: Comprehensive diagnostic tables and fault finding procedures. Repair Complexity: Suitable for DIY mechanics to professional technicians, covering basic maintenance to complex overhauls. Wiring Diagrams: Detailed electrical wiring schematics for various vehicle systems. Torque Specifications: Precise torque values for critical fasteners throughout the vehicle. Measurement Units: Includes both metric and Imperial units where applicable. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format), allowing for instant download and printing. Print Quality Print Readability: Designed for clear printing of text and diagrams. Binding Type Binding Method: N/A (Digital Download - can be printed and bound by user) Paper Type Paper Recommendation: N/A (Digital Download - user chooses paper type for printing) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, flat-four (boxer) petrol engine. Engine Displacement Gs: 1015 cc, 1124 cc, 1220 cc Engine Displacement Gsa: 1220 cc, 1299 cc Horsepower Gs: 55-67 hp (depending on variant) Horsepower Gsa: 65-75 hp (depending on variant) Torque: Approx. 80-100 Nm (depending on variant) Fuel System Carburetor Variants: Single Zenith 36/32 or Solex 34-34 TIPA on most models. Fuel Type: Unleaded petrol (with lead substitute additive for older engines if required). 🔧 Transmission Standard Manual Transmission: 4-speed manual transaxle, later 5-speed manual options available. Optional Automatic Transmission: Citroën's own semi-automatic (Hydraulique) or ZF automatic transmission on select models. Features Clutch Type: Dry single plate clutch. 📐 Dimensions Exterior Length: Approximately 4.05 - 4.25 meters (GS), 4.25 - 4.35 meters (GSA) Width: Approximately 1.63 meters Height: Approximately 1.35 - 1.40 meters Weights Curb Weight: Approximately 950 - 1050 kg Wheelbase: Approximately 2.54 meters 🛡️ Safety Features Ratings Historical Safety: Safety standards of the era were less stringent than modern vehicles. Focus on passive safety features of the time. Active Features Braking System: Self-adjusting front disc brakes and rear drum brakes. Later models might have rear discs. Passive Features Body Construction: Monocoque construction with integrated safety cage and crumple zones. Seat Belts: Front seat belts (lap and diagonal), rear seat belts (lap only on some early models). 💡 Technology Features Infotainment Radio: Period-correct AM/FM radio, often with cassette player in later models. Dashboard Design: Iconic and unique 'mushroom' style central dashboard on early GS, replaced by a more conventional (though still modern) dashboard on the GSA. Driver Assistance Power Steering: Power steering was available on higher-spec models, a significant comfort feature for its time. Connectivity Connectivity Features: N/A (No modern connectivity features). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-10,000 km or annually, whichever comes first (refer to manual for exact specification). Hydropneumatic Fluid Check: Regular inspection and topping up of LHM (Citroën hydraulic fluid) is crucial for suspension operation. Fluid Specifications Engine Oil...