🏷️ Basic Information Identification Make: BMW Model: R 80 GS / R 100 GS Year: 1984 👋 Introduction Market Position Positioning: Essential DIY and professional resource for owners of the iconic BMW R80 GS and R100 GS adventure motorcycles. Competitive Analysis Comparative Value: Provides detailed, accurate information often superior to generic online guides, enabling self-sufficiency in maintenance and repair. Key Features Diagnostic Aid: Enables accurate diagnosis and repair of complex issues through detailed schematics and troubleshooting guides. Cost Savings: Empowers owners to perform regular maintenance and repairs, significantly reducing workshop costs. Value Preservation: Helps maintain the motorcycle in optimal condition, preserving its value and reliability. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Page Count Estimated Pages: 300+ Manual Type Type: Workshop Manual / Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Full engine overhaul, tuning, troubleshooting, component replacement (cylinder head, pistons, crankshaft, valve train) Transmission: Gearbox disassembly, inspection, repair, maintenance, lubrication Drivetrain: Final drive, driveshaft, universal joints, bevel gear maintenance and repair Fuel System: Carburetor tuning and overhaul (Bing Type), fuel tank, fuel lines, fuel pump inspection and replacement Ignition System: Ignition timing, spark plugs, ignition coils, electronic ignition system troubleshooting Electrical System: Wiring diagrams, battery, alternator, starter motor, lighting, instruments, switches Braking System: Brake pad replacement, caliper overhaul, brake fluid bleeding, disc and drum brake maintenance Suspension: Front forks (including Monolever for later models if applicable to 1984 context, though R80/R100 GS typically refers to the earlier Paralever era for this vintage), rear shock absorber, swingarm, bearings Wheels Tires: Wheel bearing maintenance, spoke tensioning, tire replacement and balancing Frame Chassis: Frame inspection, steering head bearing adjustment and replacement Bodywork: Fairing, seat, fenders, fuel tank removal and installation Procedures Included Routine Maintenance: Oil changes, filter replacements, valve clearance checks, spark plug replacement, lubrication points Troubleshooting: Diagnostic flowcharts, common fault identification, solutions for starting issues, performance problems, electrical faults Engine Rebuild: Step-by-step instructions for complete engine disassembly, part inspection, clearance measurements, reassembly, and torque specifications Transmission Repair: Detailed procedures for gearbox internal repairs, including gear selection mechanisms and bearings Electrical Diagnostics: Interpreting wiring diagrams, testing components, tracing electrical faults Suspension Overhaul: Front fork seal replacement, fork oil changes, rear shock absorber adjustments and replacement Carburetor Adjustment: Detailed instructions for setting idle speed, mixture, and synchronizing dual carburetors Technical Depth Depth: Comprehensive from basic user maintenance to full engine and transmission rebuilds, including diagnostic procedures. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Quality: High-resolution scans of original documentation, suitable for printing. Binding Type Binding: N/A (Digital PDF download) Paper Type Paper: N/A (Digital PDF download) ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder boxer engine R80Gs Displacement: 797.5 cc R100Gs Displacement: 980 cc Bore X Stroke R80: 84.8 mm x 70.6 mm Bore X Stroke R100: 94 mm x 70.6 mm Compression Ratio R80: 8.2:1 (approx.) Compression Ratio R100: 8.2:1 (approx.) Performance R80Gs Horsepower: 50 hp @ 6,500 rpm (approx.) R100Gs Horsepower: 65 hp @ 6,500 rpm (approx.) R80Gs Torque: 58 Nm @ 5,000 rpm (approx.) R100Gs Torque: 77 Nm @ 5,000 rpm (approx.) Fuel System Carburetors: Dual Bing 32mm (R80 GS) / Dual Bing 40mm (R100 GS) Fuel Type: Unleaded gasoline (min. 91 RON recommended) Fuel Delivery: Mechanical fuel pump 🔧 Transmission Standard Type: 5-speed manual gearbox Optional Availability: N/A Features Clutch: Single dry plate, hydraulically operated Final Drive: Shaft drive with enclosed universal joint and bevel gear 📐 Dimensions Exterior Length: Varies by model, approx. 2,200 mm Width: Varies by model, approx. 850 mm (handlebars) Height: Varies by model, approx. 1,300 mm (seat height) Weights Dry Weight R80: Approx. 190 kg Dry Weight R100: Approx. 195 kg Fuel Tank Capacity: 26 liters (including 4-liter reserve) 🛡️ Safety Features Ratings Crash Safety: N/A (Motorcycle specific standards apply) Active Features Brakes: Dual disc front brake, single disc rear brake (typical configuration for this era) Suspension Stability: Robust telescopic front forks and Monolever/Paralever rear suspension contributing to stability. Passive Features Lighting: Halogen headlight, taillight, turn signals Instrumentation: Speedometer, tachometer, indicator lights for neutral, oil pressure, turn signals, high beam 💡 Technology Features Infotainment Features: N/A (This era of motorcycles focused on mechanical and functional aspects, not digital infotainment). Driver Assistance Features: N/A (No electronic rider aids typically found on models of this vintage). Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change: Every 5,000 km or annually Valve Check: Every 10,000 km Spark Plug Replacement: Every 10,000 km or as needed Fluid Specifications Engine Oil: SAE 20W-50 (API SF or higher recommended), Capacity: 2.5 Liters (with filter change) Gearbox Oil: SAE 80W-90 GL-5 gear oil, Capacity: 0.5 Liters Final Drive Oil: SAE 80W-90 GL-5 gear oil, Capacity: 0.2 Liters Brake Fluid: DOT 4 (or DOT 3, check specific model recommendation) Fork Oil: Kayaba KYB...