🏷️ Basic Information Identification Make: BMW Model: R 80 GS Model Variant: R80GS Model Subtype: Dual-Sport / Adventure Motorcycle Generation Generation Code: First Generation (Monolever) Codes Engine Code Family: M80 👋 Introduction Market Position Market Segment: Enduro / Adventure Touring Motorcycle Target Audience: Enthusiast Owners, Independent Repair Shops, BMW Technicians Competitive Analysis Key Competitors: Honda Africa Twin (later models), Yamaha XT600, Kawasaki KLR650, Suzuki DR650 Key Features Vehicle Key Features: Robust Boxer Twin Engine, Monolever Rear Suspension, Durable Construction, Excellent Off-Road Capability, Long-Distance Touring Comfort Manual Value Proposition Manual Utility: Essential for DIY maintenance, repair, and diagnostics, ensuring optimal performance and longevity of the R 80 GS. 📋 Manual Details Coverage Areas Geographic Coverage: Global (factory specifications) Model Year Coverage: 1987, 1988 Page Count Estimated Page Count: 200-300 (typical for this era of comprehensive factory manual) Manual Type Manual Type: Factory Service and Repair Manual Language Language: English (primary, based on typical factory manuals, may contain some German terms) Format Format: PDF (Digital) 📖 Manual Coverage Systems Covered Engine System: Full Engine Overhaul, Top End (Cylinder Heads, Valves), Bottom End (Crankshaft, Connecting Rods), Piston/Cylinder Assembly, Camshafts, Timing Chain, Oil Pump, Lubrication System Fuel System: Carburetor Diagnosis and Rebuild (Bing 32/40), Fuel Pump, Fuel Lines, Fuel Tank and Cap Ignition System: Electronic Ignition (CDI), Ignition Coils, Spark Plugs, Ignition Timing Adjustment Exhaust System: Muffler Replacement, Exhaust Pipe Connections, Gasket Replacement Transmission System: Gearbox Disassembly and Reassembly, Clutch Operation and Adjustment (Dry Clutch), Gear Shifting Mechanism, Final Drive (Shaft Drive) Inspection and Maintenance Chassis System: Frame Inspection, Swingarm, Rear Suspension (Monolever Paralever System), Front Suspension (Telescopic Forks), Steering Head Bearings Braking System: Front and Rear Drum/Disc Brakes (depending on specific market configuration), Brake Pad/Shoe Replacement, Brake Fluid Flush and Bleed, Master Cylinder, Caliper Overhaul Electrical System: Wiring Diagrams, Battery Maintenance, Charging System (Alternator/Generator), Starter Motor, Lighting System (Headlight, Taillight, Indicators), Instrument Cluster, Horn Bodywork And Trim: Fender Removal/Installation, Seat Replacement, Fuel Tank Mounting, Fairing/Windscreen (if equipped) Removal/Installation, Luggage Rack Systems Procedures Included Maintenance Procedures: Scheduled Maintenance, Oil and Filter Changes, Spark Plug Replacement, Air Filter Cleaning/Replacement, Valve Clearance Adjustment, Drive Shaft Lubrication, Battery Charging Repair Procedures: Engine Rebuilds, Transmission Overhauls, Suspension Component Replacement, Brake System Repairs, Electrical System Troubleshooting and Component Replacement Troubleshooting Guides: Diagnostic Procedures for Common Problems, Symptom-Based Troubleshooting Tables, Fault Code Interpretation (if applicable) Specifications Data: Torque Values for all fasteners, Clearances, Fluid Capacities, Electrical Specifications Technical Depth Diagnostic Capability: Advanced Diagnostics and Troubleshooting Rebuild Depth: Complete Engine and Transmission Rebuilds Diagnostic Tools: References to special tools and diagnostic procedures 📊 Manual Specifications File Format File Format: PDF PDF Quality: High-Resolution Scans (expected for factory manuals, optimized for readability of text and images) Searchability: Text Searchable (OCR processed PDF) Print Quality Printability: Printable Pages Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Air-Cooled, Four-Stroke, Flat-Twin (Boxer) Displacement: 797.5 cc (798 cm³) Bore X Stroke: 84.8 mm x 70.6 mm Compression Ratio: 8.2:1 Valve Train: Overhead Camshafts (SOHC), Pushrods, Rocker Arms Power Output: Approx. 50 hp (37 kW) at 6500 rpm (stated DIN) Torque Output: Approx. 60 Nm (44 lb-ft) at 5000 rpm (stated DIN) Fuel System Carburetion: Twin Bing 32/40 Constant Velocity (CV) Carburetors Fuel Type: Unleaded Gasoline (Premium Recommended) Fuel Tank Capacity: 20 Liters (5.3 US Gallons) Lubrication Oil Capacity With Filter: 3.0 Liters (3.2 US Quarts) Recommended Oil Grade: SAE 20W-50 or SAE 15W-40 (API SG or higher) 🔧 Transmission Standard Transmission Type: 5-Speed Manual Constant Mesh Gearbox Features Clutch Type: Single Dry Plate Clutch (operated via cable) Final Drive: Shaft Drive with Universal Joint to Rear Wheel Fluid Type Transmission Fluid: SAE 75W-90 or SAE 80W-90 GL-5 Gear Oil Fluid Capacity Transmission Oil Capacity: 0.25 Liters (0.26 US Quarts) 📐 Dimensions Exterior Length: Approx. 2220 mm (87.4 in) Width: Approx. 930 mm (36.6 in) at handlebars Height: Approx. 1375 mm (54.1 in) at seat Weights Dry Weight: Approx. 200 kg (441 lbs) Wet Weight: Approx. 215 kg (474 lbs) (fully fueled) Wheels And Tires Front Wheel Size: 2.15 x 19 inch (spoked) Rear Wheel Size: 3.00 x 17 inch (spoked) Front Tire Size: 90/90-19 (Tubed) Rear Tire Size: 130/80-17 (Tubed) Suspension Front Suspension Type: Telescopic Fork with 200mm travel Rear Suspension Type: BMW Monolever with WP Monoshock, Adjustable Preload, 170mm travel Braking Front Brake Type: Single 285mm Disc with 2-Piston Caliper (some models may have drum) Rear Brake Type: Drum Brake (some models may have disc) 🛡️ Safety Features Ratings Crash Safety Ratings: N/A (Motorcycle specific safety is inherent in design, not typically rated by consumer agencies like cars) Active Features Handling Stability: Balanced chassis geometry, Monolever rear suspension contributing to stability Braking Performance: Adequate braking for the era, disc brake option offers superior stopping power Passive Features Lighting System: Halogen Headlight, LED...