🏷️ Basic Information Identification Make: Citroën Model: GS / GSA Year: 1973 Codes Engine Code Range: GS (G126, G127), GSA (G140, G141) Generation Generation Code: First Generation (GS) / Facelift (GSA) 👋 Introduction Market Position Target Audience: Citroën GS/GSA owners, DIY mechanics, automotive repair shops Competitive Analysis Manual Superiority: Comprehensive, professional-grade, manufacturer-provided information, equivalent to or superior to some retail manuals Key Features Value Proposition: Saves significant repair costs, empowers owners to perform maintenance and repairs Accessibility: Instant digital download, no shipping costs or wait times 📋 Manual Details Coverage Areas Coverage Overview: All Models, Engines, Trim Levels, and Transmission Types for the 1973 Citroën GS/GSA Page Count Estimated Page Count: Hundreds of pages (specific count not provided, but described as extensive) Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine Service/Repair, Transmission Service/Repair, Differential/Drive, Axle Chassis: Brake System, Suspension, Steering, Cooling System, Chassis/Body Electrical And Fuel: Wiring Diagram, Electrical System, Fuel Injection/Fuel System, Emission System, Engine Control System Comfort And Interior: Heater/Air Conditioner, Interior General: General Maintenance, Periodic Lubrication, Troubleshooting, Restraint System Procedures Included Repair Procedures: Detailed step-by-step repair procedures, disassembly, assembly, cleaning, reinstallation Diagnostic Procedures: Comprehensive diagnostic information, troubleshooting common issues Maintenance Procedures: Routine maintenance tasks, periodic lubrication schedules Troubleshooting Guides: Systematic troubleshooting procedures for common faults and issues across all major systems. Technical Depth Depth: Professional-level technical detail, same as used by local service/repair shops Illustrations: Detailed diagrams, drawings, and photos, enlarged insets for part examination Warnings And Notes: Notes, cautions, and warnings to pinpoint critical information 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable Zoom Functionality: YES (Zoom IN/OUT) Binding Type Binding: Digital Download (N/A for physical binding) Paper Type Paper Type: N/A (Digital PDF) Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader & WinZip Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Horizontally opposed (Boxer) 4-cylinder, air-cooled Displacement Gs: 1015 cc (G126/G127) Displacement Gsa: 1124 cc (G140/G141) initially, later 1222 cc Performance Horsepower Gs 1015Cc: Approx. 56-60 hp (DIN) Horsepower Gsa 1124Cc: Approx. 65-69 hp (DIN) Torque Gs 1015Cc: Approx. 74-78 Nm @ 3000 rpm Fuel System Fuel Delivery: Carburetor (e.g., Solex twin-choke) Fuel Type: Unleaded gasoline (appropriate octane rating for the era) Engine Control System Ignition System: Conventional ignition system with distributor 🔧 Transmission Standard Type: 4-speed manual transaxle Optional Type: Optional 3-speed Citroën-Koyo automatic transaxle (less common) Features Clutch Type: Single dry plate, hydraulically operated Gear Ratios: Specific ratios detailed within the manual for each model/engine variant 📐 Dimensions Exterior Length: GS: Approx. 4090 mm (161 in), GSA: Approx. 4100 mm (161.4 in) Width: GS/GSA: Approx. 1620 mm (63.8 in) Height: GS: Approx. 1370 mm (53.9 in), GSA: Approx. 1350 mm (53.1 in) Weights Curb Weight: GS: Approx. 980 kg (2160 lbs), GSA: Approx. 1000 kg (2205 lbs) 🛡️ Safety Features Ratings Crash Safety Era: Designed to mid-1970s safety standards; specific formal ratings (e.g., NHTSA) may not be readily available or comparable to modern standards. Active Features Braking System: Hydraulically operated disc brakes front, drum brakes rear; self-adjusting Suspension System: Citroën Hydropneumatic suspension (self-levelling, adjustable ride height) Passive Features Seatbelts: Likely fitted with front seatbelts as standard or optional depending on market regulations Chassis Design: Rigid chassis with crumple zones, contributing to passive safety 💡 Technology Features Infotainment Audio System: Basic AM/FM radio, likely mono, as standard or optional equipment. Driver Assistance Ride Control: Hydropneumatic suspension provides advanced ride comfort and self-levelling, a significant technological feature for its era. Connectivity Connectivity Features: N/A (No modern connectivity features like Bluetooth or USB are present). Instrumentation Dashboard Design: Unique rotating drum speedometer and tachometer in early GS models, updated for GSA. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 km (3,000-4,500 miles) or annually, detailed in the manual. Tune Up Interval: Recommended periodic tune-ups including spark plugs, ignition timing, and carburetor adjustment as per manual. Fluid Specifications Engine Oil Grade: Likely 10W-40 or 20W-50, air-cooled engine specific, consult manual for precise specification. Hydraulic Fluid: Citroën LHS 2 (LHM) or equivalent for hydropneumatic suspension and brakes. Manual will specify the exact type. Transmission Fluid: Specific gear oil or ATF for automatic, manual transaxle likely requires API GL-4 gear oil. Manual will provide exact specifications. Known Issues Common Problems List: Hydropneumatic suspension sphere wear, potential for corrosion, electrical connection issues, carburetor tuning, exhaust system wear. Maintenance Importance: Regular maintenance is crucial for the longevity and performance of this innovative vehicle. 📚 Vehicle History Brand Heritage Citroen Innovation: Citroën is renowned for its engineering innovation, particularly in suspension (Hydropneumatic) and aerodynamics. Model Evolution Gs Introduction: The Citroën GS was introduced in 1970, filling the gap between the Ami 8 and the larger DS. Gsa Facelift: The GSA was a significant facelift...