🏷️ Basic Information Identification Make: BMW Model: R850R Model Variant: R850C (Classic) Year: 1998 Codes Engine Code: M119 👋 Introduction Market Position Segment: Mid-weight touring motorcycle, known for comfort and BMW's characteristic engineering Competitive Analysis Competitors: Honda VFR750F, Yamaha XJ900S Diversion, Kawasaki GTR1000 Key Features Bike Features: Torquey Boxer-twin engine, shaft drive, Telelever front suspension, comfortable ergonomics for touring 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, and Workshop Procedures Page Count Estimated Page Count: 300+ Manual Type Type: Workshop Service Manual Language Language: English Format Format: Digital (PDF assumed, common for this era) 📖 Manual Coverage Systems Covered Engine Management: Detailed diagnosis and repair of fuel injection, ignition, and engine control systems (Motronic M1.2) Powertrain: Engine overhaul, transmission repair (5-speed gearbox), final drive, clutch assembly Chassis: Suspension (front Telelever, rear Paralever), steering, braking system (ABS II optional), wheel bearings Electrical: Wiring diagrams, lighting, starting and charging systems, instrument cluster, sensor diagnostics Bodywork: Fairings, seat, fuel tank, fenders, minor body panel repairs Procedures Included Maintenance: Oil changes, filter replacements, spark plug service, valve clearance adjustment, drive shaft lubrication Troubleshooting: Systematic diagnostic procedures for common and complex faults Repair: Step-by-step instructions for component removal, repair, and reassembly Diagnostics: Fault code interpretation, sensor testing, actuator testing Technical Depth Depth: Comprehensive from basic maintenance to complete engine and gearbox rebuilds, including electrical system troubleshooting 📊 Manual Specifications File Format File Type: PDF (Likely) Print Quality Image Clarity: High-resolution scans of original diagrams and text (typical for quality manuals) Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Air/oil-cooled, four-stroke, boxer-twin Displacement: 848 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 9.7:1 Valve Train: 2 valves per cylinder, pushrod-actuated with cam followers Performance Horsepower: 70 hp (51 kW) @ 6,750 rpm (approx.) Torque: 78 Nm (57.5 lb-ft) @ 5,000 rpm (approx.) Fuel System Fuel Delivery: Bosch Motronic M1.2 fuel injection Fuel Type: Unleaded gasoline (91-98 RON) Lubrication Oil Capacity: 3.0 L (3.2 US qt) with filter change Oil Type: API SG or higher, SAE 20W-50 or 15W-50 recommended (refer to manual for precise specs) Ignition Ignition System: Electronic ignition (Motronic) Spark Plugs: Bosch WSR6F or equivalent (gap 0.7 mm) 🔧 Transmission Standard Transmission Type: 5-speed manual, constant mesh Clutch: Single dry plate, diaphragm spring Features Final Drive: Shaft drive Fluid Specifications Gearbox Oil Type: API GL-5, SAE 75W-90 or 80W-90 gear oil Fluid Capacities Gearbox Oil Capacity: 0.28 L (0.3 US qt) 📐 Dimensions Exterior Length: 2170 mm (85.4 in) Width: 800 mm (31.5 in) at handlebars Height: 1380 mm (54.3 in) at seat Weights Dry Weight: 227 kg (500 lbs) Gross Vehicle Weight: 450 kg (992 lbs) Fuel Capacity Fuel Tank Capacity: 20 L (5.3 US gal) Reserve Fuel: 3 L (0.8 US gal) 🛡️ Safety Features Ratings Crash Testing: N/A (Motorcycle safety is typically not rated by third parties like NHTSA for cars) Active Features Braking System: Hydraulic disc brakes front and rear. ABS II was an optional feature on this model. Front Brake: Dual 305 mm discs, 4-piston calipers Rear Brake: Single 276 mm disc, 2-piston caliper Passive Features Lighting: Halogen headlight, integrated turn signals, taillight/brake light Chassis Stability: Telelever front suspension contributes to stable geometry under braking. 💡 Technology Features Infotainment Infotainment System: Basic analog instruments, no integrated infotainment system. Provision for auxiliary power outlet. Driver Assistance Driver Assistance Features: Optional ABS II anti-lock braking system. No other electronic rider aids present. Connectivity Connectivity Options: None (vehicle itself). 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,000 miles) or annually, whichever comes first (refer to manual for exact recommendation) Valve Clearance Check: Every 20,000 km (12,000 miles) Spark Plug Replacement: Every 20,000 km (12,000 miles) Drive Shaft Lube: Check and lubricate every 10,000 km (6,000 miles) Fluid Specifications Brake Fluid: DOT 4 (replace every 2 years) Coolant Type: BMW specific coolant or equivalent (for oil cooler circuit if applicable, mainly air-cooled but some components may require specific fluid checks) Known Issues Common Wear Items: Clutch wear, alternator brush wear, regulator issues, minor electrical connection corrosion, rear shock absorber degradation over time. Diagnostic Challenges: Older Motronic systems can be less communicative than modern ECUs, requiring more hands-on testing of sensors and actuators. Filter Part Numbers Oil Filter: BMW Part # 11 42 1 450 723 or compatible aftermarket (e.g., Mahle OC26, K&N KN-160) Air Filter: BMW Part # 13 72 1 457 139 or compatible aftermarket (e.g., K&N 33-2073) 📚 Vehicle History Brand Heritage Heritage: BMW Motorrad has a long history of producing reliable and innovative motorcycles, particularly known for their boxer engines and shaft drive. Model Evolution Predecessors: The R850R is part of the evolution of BMW's R series, building on the legacy of models like the R100R and introducing newer technologies. Successors: The R850R...