This manual covers the R 80 GS and R 100 R motorcycles, iconic models that defined the adventure touring and road-biased boxer twin segments respectively. The R 80 GS, introduced in 1980, is celebrated for pioneering the 'Gelände/Straße' concept, while the R 100 R continued the legacy of the R 100 series with updated styling. These air-cooled, four-stroke boxer twin-cylinder machines, powered by engines ranging from approximately 797.5 cc to 979.5 cc, are renowned for their robust engineering, reliability, and enduring appeal within the motorcycle community. This comprehensive workshop repair service manual provides detailed information necessary for the maintenance, diagnosis, and repair of these classic motorcycles. It covers all major systems, including the engine, fuel, ignition, transmission, drivetrain, suspension, steering, brakes, and electrical systems. The manual offers step-by-step procedures for routine maintenance, engine and transmission overhauls, suspension servicing, brake repairs, and electrical diagnostics, along with essential technical specifications, torque values, and troubleshooting guides. Its extensive coverage is designed to assist owners and technicians in preserving the performance and longevity of the R 80 GS and R 100 R. 🏷️ Basic Information Identification Make: BMW Model: R 80 GS / R 100 R Category: Motorcycle Product Type: Workshop Repair Service Manual Product Format: PDF Download 👋 Introduction Market Position Target Audience: Owners and independent repair shops of BMW R 80 GS and R 100 R motorcycles, seeking to perform maintenance, diagnostics, and repairs. Competitive Analysis Value Proposition: Provides essential technical information for maintaining and repairing iconic BMW 'Airhead' models, crucial for preserving their value and performance. Key Features Illustration Quality: Illustrated with clear, step-by-step instructions, enhancing clarity for complex procedures. Completeness: Comprehensive coverage of mechanical, electrical, and chassis systems. 📋 Manual Details Coverage Areas Vehicle Generations Covered: Covers BMW R 80 GS and R 100 R models, likely spanning production years from the early 1980s through the 1990s. Geographic Coverage: Primarily European market focused, but applicable to global specifications due to the nature of service manuals. Page Count Estimated Page Count: Estimated 300-500 pages (typical for comprehensive workshop manuals). Manual Type Type: Workshop Repair Service Manual Language Language: Likely English, with potential for German and other European languages depending on the original source. Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Detailed coverage of the BMW boxer twin-cylinder engine, including top-end overhaul (cylinder heads, valves, pistons), bottom-end components (crankshaft, connecting rods, bearings), lubrication system (oil pump, oil cooler, filtration), cooling system (air-cooled), and timing system (pushrods, lifters, timing gears). Fuel System: Comprehensive coverage of fuel delivery, including carburetor tuning and rebuilding (likely Bing carburetors), fuel tank and lines, fuel pump operation (if applicable), and emission control systems. Ignition System: Details on the ignition system components, including spark plugs, ignition coils, ignition control unit (CDI or electronic ignition), timing adjustments, and troubleshooting. Transmission And Drivetrain: In-depth procedures for the gearbox (5-speed), including clutch operation and adjustment, gear selection mechanisms, output shaft, driveshaft, and final drive (shaft drive) maintenance and repair. Suspension And Steering: Detailed instructions for front suspension (often BMW's Telelever or conventional telescopic forks depending on specific sub-model/year) and rear suspension (monoshock or twin shock absorber systems, Paralever swingarm), including fork seal replacement, shock absorber servicing, steering head bearing maintenance, and wheel bearing checks. Brakes: Coverage of the braking system, including front and rear brake caliper servicing, hydraulic system maintenance (fluid bleeding, line replacement), brake pad replacement, and rotor inspection. Electrical System: Extensive electrical schematics, wiring diagrams, component testing procedures for the battery, charging system (alternator, voltage regulator), starter motor, lighting system, instrumentation, and auxiliary electrical components. Bodywork And Chassis: Procedures for body panel removal and installation, frame inspection, seat servicing, and minor bodywork repairs. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, brake adjustments, chain lubing (if applicable to specific models), tire pressure checks, and general inspection points. Troubleshooting: Systematic diagnostic procedures for common starting issues, running problems, electrical faults, and braking system concerns, often with flowcharts and symptom-based guidance. Engine Rebuilds: Detailed step-by-step instructions for major engine overhauls, including piston ring replacement, valve lapping, camshaft replacement, and bearing clearance checks. Transmission Overhaul: Procedures for gearbox disassembly, inspection of gears and shift forks, bearing replacement, and reassembly. Suspension Servicing: Fork oil changes, seal replacements, shock absorber servicing, and steering bearing adjustment/replacement. Brake System Repair: Bleeding procedures, caliper seal replacement, pad and rotor replacement, and master cylinder servicing. Electrical Diagnostics: Testing of charging system components, ignition timing checks, wiring harness repair, and troubleshooting electrical accessories. Special Tools: Lists and descriptions of specific tools required for various repair procedures, ensuring correct execution. Technical Depth Depth: Comprehensive, covering basic to advanced repair and overhaul procedures. Suitable for both DIY enthusiasts and professional mechanics. Diagnostic Capability: High, includes detailed troubleshooting guides and technical data for component testing. Rebuild Scope: Full engine and transmission rebuild capabilities, suspension component...