This manual covers the R1100 / R850 series motorcycles, including the R1100RT, R1100RS, R850/1100GS, and R850/1100R, produced from the mid-1990s to the early 2000s. These Boxer Twin motorcycles are renowned for their engineering quality, reliability, and innovative features such as fuel injection and advanced ABS systems. The R1100/R850 series represented a significant modernization of the iconic boxer platform, offering a blend of performance, comfort, and durability for touring, sport-touring, and adventure riding. This service and repair manual provides comprehensive, factory-level information for maintenance, servicing, diagnostics, and repair. It details procedures for all major systems, including the engine, fuel and cooling, drivetrain, chassis, and electrical systems. The manual is designed to assist owners, mechanics, and technicians in performing routine maintenance, troubleshooting common issues, and executing complex repairs, ensuring the continued optimal performance and longevity of these motorcycles. 🏷️ Basic Information Identification Make: BMW Model: R1100 / R850 Series Product Type: Service and Repair Manual Product Format: PDF Download Publication Date: February 2000 Language: English Codes Applicable Models: R1100RT, R1100RS, R850/1100GS, R850/1100R 👋 Introduction Market Position Positioning: Essential technical documentation for owners and technicians of the BMW R1100 and R850 series motorcycles, providing factory-level repair and maintenance information. Competitive Analysis Comparison: Directly comparable to original BMW workshop manuals used by dealerships, offering a comprehensive alternative to generic Haynes or Clymer manuals for in-depth technical work. Key Features Features: Dealer-level accuracy, comprehensive system coverage, detailed diagrams, troubleshooting guides, and step-by-step repair procedures. Benefit To Owner: Empowers owners to perform maintenance and repairs with confidence, saving time and money, and ensuring the longevity and optimal performance of their motorcycle. Value Proposition: This manual is the same type of resource used by certified technicians, offering unparalleled insight into the intricate workings of the R1100/R850 series. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive maintenance, servicing, diagnostics, and repair procedures for specified BMW R series motorcycles. Secondary Coverage: Includes detailed diagrams, technical specifications, and troubleshooting guides. Page Count Estimated Page Count: Varies based on specific model variants within the R1100/R850 series, typically a comprehensive volume. Manual Type Type: Factory Service Manual (FSM) / Workshop Manual Format File Format: PDF Compatibility: All versions of Windows & Mac Requirements: PDF Reader 📖 Manual Coverage Systems Covered Engine Mechanical: Engine Top End, Crankshaft/Transmission, Engine Lubrication System, Engine Removal/Installation, Pistons, Rings, Rods, Crankshaft, Valve train, Camshaft, Cylinder Head, Cylinder Block. Fuel And Cooling: Fuel System, Carburetor, Fuel Pump, Fuel Filter, Cooling System, Radiator, Oil Radiator, Oil Cooling. Drivetrain And Suspension: Clutch, Transmission, Final Drive, Wheels/Tires, Suspension, Steering. Chassis And Electrical: Frame, Electrical System, Wiring Diagrams, Sensors, Ignition, Battery, Starter, Alternator. Braking: Brakes, Brake Pads, Brake Discs, Brake System Components. Procedures Included Routine Maintenance: Oil Change, Transmission Fluid Change, Filter Replacements (Air, Fuel, Oil), Spark Plug Replacement, Tire Rotation, Brake Pad Replacement, Clutch Adjustment. Diagnostic Procedures: Troubleshooting guides for common issues, fault code diagnosis, electrical system diagnostics, engine performance checks. Repair And Rebuild: Engine disassembly and reassembly, transmission overhaul, clutch replacement, suspension component replacement, electrical component repair, brake system bleeding and repair. Installation And Adjustment: Component installation, alignment procedures, torque specifications for critical fasteners, carburetor synchronization. Technical Depth Depth: Comprehensive, covering basic maintenance to advanced engine and electrical system overhauls. Suitable for both novice DIYers and professional technicians. Detail Level: Detailed step-by-step instructions with clear explanations and numerous diagrams/illustrations. Special Tools: Identifies specific tools or equipment required for certain procedures, often with illustrations. Troubleshooting Charts: Includes structured troubleshooting charts for identifying and resolving common problems. Appendix: Contains supplementary information such as torque specifications, fluid capacities, wiring diagrams, and technical data. 📊 Manual Specifications File Format Format: PDF Searchability: Typically searchable text within the PDF for quick information retrieval. Printability: Printable pages, allowing users to create physical copies of sections or the entire manual. Print Quality Quality: High-resolution scans ensuring clarity of text and diagrams. Binding Type Type: N/A (Digital PDF) Paper Type Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Air/Oil-cooled, four-stroke Boxer Twin Engine Displacement: R1100: 1085cc; R850: 848cc Bore X Stroke: R1100: 99mm x 70.5mm; R850: 85mm x 73mm (approximate, check specific model for exact figures) Compression Ratio: R1100: 10.3:1; R850: 9.3:1 (approximate, check specific model) Performance Horsepower: R1100RT/RS/R/GS: Approx. 90-95 HP; R850: Approx. 70-75 HP (exact figures vary by model and tuning) Torque: R1100: Approx. 98 Nm (72 lb-ft); R850: Approx. 78 Nm (58 lb-ft) (exact figures vary by model and tuning) Fuel System Fuel Delivery: Bosch Motronic Fuel Injection (with specific injector types and ECU mapping per model) Fuel Type: Unleaded gasoline (Octane rating as specified in manual, typically 91 RON or higher) Fuel Tank Capacity: Varies by model (e.g., R1100RT approx. 25 liters) Fuel Pump Type: Electric, in-tank or external depending on specific model 🔧 Transmission Standard Type: 5-speed constant mesh gearbox Optional Type: N/A (typically manual transmission only for these models) Features...