This manual covers the R80 GS and R100 GS models from 1995, renowned dual-sport motorcycles celebrated for their durability, versatility, and the characterful air-cooled boxer engines. These machines are engineered for adventure, capable of handling both paved roads and challenging off-road terrain, a testament to a long-standing heritage in motorcycle manufacturing. Key features include a low-maintenance shaft drive system and robust construction, making them ideal for long-distance touring and exploration. The R80 GS and R100 GS are recognized for their significant low-end torque and reliable performance, solidifying their status as iconic adventure motorcycles. This workshop manual provides comprehensive service, repair, and maintenance information essential for owners and technicians. It details procedures for all major systems, including the air-cooled twin-cylinder boxer engine, 5-speed gearbox, shaft drive, suspension, brakes, and electrical systems. The manual includes routine maintenance schedules, diagnostic troubleshooting guides, component overhaul instructions, critical specifications and tolerances, and electrical system diagnostics. Its in-depth coverage ensures that users can effectively maintain and repair their R80 GS or R100 GS, preserving its legendary performance and longevity. 🏷️ Basic Information Identification Make: BMW Model: R80 GS / R100 GS Year: 1995 👋 Introduction Market Position Segment: Dual-sport / Adventure Motorcycle Competitive Analysis Competitors 1995: Honda Africa Twin, Yamaha Ténéré, Suzuki DR Series, Kawasaki KLR Series, KTM LC4 models. Key Features Durability: Renowned for robust construction and longevity, especially the air-cooled boxer engines. Versatility: Capable on both paved roads and off-road terrain, a hallmark of the GS line. Engine Character: Torquey, characterful boxer twin providing ample low-end grunt suitable for adventure touring. Shaft Drive: Low-maintenance shaft drive system, a significant advantage over chain-driven competitors for long-distance travel. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, and Maintenance Page Count Estimated Pages: Significant, detailed coverage typical for factory manuals (specific count not provided in product data) Manual Type Type: Workshop Manual / Service Manual Language Language: English (implied by typical market for this manual) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Air-cooled twin-cylinder boxer engine, including engine assembly, disassembly, tuning, lubrication, cooling system (air), fuel system (carburetors), exhaust system, ignition system. Transmission: 5-speed gearbox (often referred to as the 'GS' gearbox), clutch operation, internal components, lubrication, troubleshooting. Drivetrain: Shaft drive system (final drive unit), universal joints, gear ratios, maintenance, lubrication, bearing replacement. Suspension: Front telescopic forks (often BMW's own Paralever system for later models, but for 1995 R80/R100 GS, typically conventional telescopic forks with internal damping), rear Monolever swingarm, shock absorber adjustments, fork seal replacement, rebuilding suspension components. Brakes: Front and rear brake systems (typically disc brakes), caliper overhaul, master cylinder maintenance, brake line replacement, bleeding procedures, pad replacement, rotor specifications. Electrical: Wiring diagrams, battery maintenance, charging system (alternator/generator), starter motor, lighting system, ignition coils, troubleshooting electrical faults. Fuel System: Carburetor tuning and rebuilding (likely Bing carburetors), fuel tank maintenance, fuel lines, fuel pump (if applicable). Bodywork: Fairing removal and installation, seat maintenance, fuel tank repair, fender mounting, general body panel adjustments. Wheels And Tires: Wheel bearing maintenance, spoke tensioning, tire changing, wheel balancing, recommended tire sizes. Procedures Included Routine Maintenance: Oil changes, filter replacement, spark plug checks/replacement, air filter cleaning/replacement, valve clearance adjustment, chain/shaft drive inspection and lubrication. Diagnostic Troubleshooting: Step-by-step guides for identifying and resolving common mechanical and electrical issues. Component Overhaul: Detailed instructions for disassembling, inspecting, repairing, and reassembling major engine, transmission, and suspension components. Specifications And Tolerances: Critical measurements, torque values, and clearances for all engine and chassis components. Electrical Diagnostics: Troubleshooting common electrical problems, testing components, and understanding wiring diagrams. Special Tools: Identification of specialized tools required for certain repair procedures. Technical Depth Depth: Comprehensive: Covers everything from basic servicing and routine maintenance to full engine rebuilds, transmission overhauls, and in-depth electrical system diagnostics. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Print Quality Quality: Typically high-quality scans of original factory manuals, ensuring clear diagrams and text. Binding Type Binding: Not applicable for PDF download (originally bound when printed). Paper Type Paper: Not applicable for PDF download (designed to be viewed on screen or printed). ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder (Boxer) Bore X Stroke R80: 80.7 mm x 78.0 mm (R80 GS) Bore X Stroke R100: 94.0 mm x 71.5 mm (R100 GS) Displacement R80: 797.5 cc (R80 GS) Displacement R100: 980 cc (R100 GS) Compression Ratio: Typically 8.5:1 to 9.5:1 depending on specific R100 variant. Performance Horsepower R80: Approx. 50-55 hp at 6500 rpm (R80 GS) Horsepower R100: Approx. 60-65 hp at 7000 rpm (R100 GS) Torque: Significant low-end torque, typically in the 55-65 Nm range for R100. Fuel System Carburetors: Dual Bing constant-velocity carburetors (e.g., 32mm or 40mm depending on model/year). Fuel Type: Unleaded gasoline (91 AKI / 95 RON recommended). Valvetrain Valve Actuation: Overhead valves (OHV), pushrod actuated. Lubrication Oil Type: API SG or higher,...