🏷️ Basic Information Identification Make: BMW Model: R850 GS Production Years: 1999-2001 Codes Engine Code: 117EB (R850R engine variant) 👋 Introduction Market Position Positioning: The R850 GS was positioned as a more accessible, lighter, and urban-friendly variant of the legendary R1100 GS, offering BMW's characteristic engineering and touring capability in a more manageable package. Competitive Analysis Competitors: Competed with other mid-weight adventure touring motorcycles from manufacturers like Honda (Africa Twin 750), Yamaha (TDM 850/900), and Suzuki (DR800). Key Features Features: Torquey boxer twin engine, robust Telelever front suspension, Monolever rear suspension, shaft drive, comfortable ergonomics for touring, ABS (optional on some models). 📋 Manual Details Coverage Areas Main Coverage: Comprehensive service and repair for BMW R850 GS models Specific Systems: Engine, Transmission, Chassis, Electrical System, Fuel System, Suspension, Brakes, Bodywork Page Count Estimated Pages: 300-500 pages (typical for this era and scope) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Detailed breakdown of the 848cc (approx.) air-cooled, two-cylinder boxer engine, including valve adjustment, timing, ignition system, fuel injection, and lubrication. Transmission: Operation, maintenance, and repair of the 5-speed gearbox, clutch assembly, and final drive (shaft drive). Chassis And Suspension: Front Telelever suspension, rear Monolever swingarm, fork oil changes, shock absorber servicing, wheel bearing replacement, steering head bearing adjustment. Brakes: Front and rear brake systems, including hydraulic lines, master cylinders, calipers, disc replacement, brake fluid flushing and bleeding procedures. Electrical System: Wiring diagrams, component testing, battery maintenance, charging system (alternator/rectifier), starter motor, lighting, instrumentation. Fuel System: Fuel tank removal/installation, fuel pump operation, fuel filter replacement, throttle body servicing, EFI system troubleshooting. Bodywork And Trim: Fairing removal and installation, seat, tank cover, fenders, and other body panels. Procedures Included Maintenance: Regular service intervals, oil and filter changes, air filter replacement, spark plug replacement, brake pad inspection and replacement, clutch adjustment, drive shaft lubrication. Troubleshooting: Diagnostic procedures for common issues related to engine performance, electrical faults, and braking. Repair: Step-by-step instructions for component disassembly, repair, and reassembly, including engine rebuild procedures (partial/full depending on manual scope). Diagnostics: Fault finding, electrical component testing, and engine diagnostics. Technical Depth Depth: Comprehensive, suitable for professional technicians and experienced DIY mechanics. Covers detailed specifications, torque values, and specialized procedures. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High-resolution scans, clear diagrams and images. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder (boxer) Displacement: 848 cc (approx.) Bore X Stroke: 90.0 mm x 66.0 mm (typical for this engine family) Compression Ratio: 9.8:1 (typical) Performance Horsepower: 70-72 hp @ 6750 rpm (approx.) Torque: 56-59 lb-ft @ 5000 rpm (approx.) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline (95 RON recommended) Ignition System Ignition: Digital ignition (Motronic) with dual spark plugs per cylinder. Lubrication Oil Type Capacity: BMW Motorrad ADVANTEC Ultimate 15W-50 or equivalent. Capacity approximately 3.0 liters with filter change. 🔧 Transmission Standard Gearbox: 5-speed manual transmission Optional Options: N/A (Manual transmission standard) Features Clutch: Dry, single-plate clutch, hydraulically actuated. Final Drive: Shaft drive with universal joint. Fluid Specifications Gearbox Oil: SAE 75W/90 GL-5 synthetic gear oil. Capacity approximately 0.7 liters. Final Drive Oil: SAE 80W/90 GL-5 gear oil. Capacity approximately 0.25 liters. 📐 Dimensions Exterior Length: Approx. 2180 mm (85.8 in) Width: Approx. 880 mm (34.6 in) at handlebars Height: Approx. 1350 mm (53.1 in) at handlebars Seat Height: Approx. 820 mm (32.3 in) (standard seat) Weights Dry Weight: Approx. 212 kg (467 lbs) Gross Vehicle Weight Rating: Approx. 430 kg (948 lbs) Fuel Capacity: Approx. 20 liters (5.3 US gal), including 3 liters reserve. Payload Capacity: Approx. 218 kg (481 lbs) 🛡️ Safety Features Ratings ABS: Optional BMW Motorrad ABS (Anti-lock Braking System) available on some models. Active Features Braking System: Dual front disc brakes with 4-piston calipers, single rear disc brake with 2-piston caliper. Lighting: Halogen headlight, LED taillight, integrated turn signals. Passive Features Frame: Steel tube frame. Ergonomics: Designed for rider comfort and control during long-distance touring. 💡 Technology Features Infotainment Infotainment System: Basic instrumentation cluster; no integrated infotainment system in the modern sense. Provision for accessory power outlets. Driver Assistance Driver Assistance: Optional ABS (Anti-lock Braking System) was a key advanced feature for its time. Connectivity Connectivity: N/A. Relies on wired connections for diagnostics by technicians. Diagnostics Diagnostic Port: Features a diagnostic connector (often a 7-pin connector) for connection to BMW's diagnostic tools (e.g., MoDiTec). 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,000 miles) or annually. Valve Check Interval: Every 20,000 km (12,000 miles). Spark Plug Replacement: Every 20,000 km (12,000 miles). Air Filter Replacement: Every 20,000 km (12,000 miles) or as needed based on...