🏷️ Basic Information Identification Make: BMW Model: R850R / R850C Year: 1998 Family: R850 Series Codes Engine Code: 117EB (likely variant) 👋 Introduction Market Position Segment: Mid-size touring/cruiser motorcycle, positioned as a more accessible alternative to the R1100/R1150 series. Competitive Analysis Competitors: Honda VFR750, Yamaha FJ1200 (earlier versions), Kawasaki GTR1000, Moto Guzzi California. Key Features Engine Configuration: Air-cooled, two-cylinder, boxer engine (flat-twin). Drive Type: Shaft drive, a hallmark of BMW motorcycles. Suspension Design: Telelever front suspension and Paralever rear suspension for predictable handling and reduced dive/squat. 📋 Manual Details Coverage Areas Primary Coverage: All R850R and R850C models for 1998 Secondary Coverage: Likely covers minor variations within the 1998 model year and potentially early 1999 updates if applicable. Page Count Estimated Pages: 300-400 (typical for a comprehensive workshop manual) Manual Type Type: Workshop Repair Service Manual Language Language: English (primary language of description) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine disassembly, assembly, lubrication, cooling system, fuel system, ignition system, exhaust system. Transmission: Gearbox (likely 5-speed), clutch operation, final drive (shaft drive). Chassis And Suspension: Frame, front fork (Telelever), rear suspension (Paralever), wheel bearings, steering. Brakes: Hydraulic braking system, front and rear brake calipers, master cylinders, brake fluid service. Electrical System: Wiring diagrams, battery, charging system (alternator, regulator), starting system, lighting, instrumentation, sensors, ECU (engine control unit). Fuel System: Fuel tank, fuel pump, fuel injectors, throttle body, idle control. Bodywork And Trim: Fairings, seat, body panels, mounting points, accessories. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, spark plug service, brake fluid flush, coolant service. Troubleshooting: Diagnostic procedures for common problems, fault codes (if applicable), symptom-based diagnostics. Repair: Detailed step-by-step instructions for component removal, repair, and reinstallation. Overhaul: Engine and gearbox disassembly and reassembly procedures. Wiring Diagrams: Complete electrical schematics for all systems. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including electrical diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF for efficient information retrieval. Print Quality Quality: Digital, quality dependent on source but typically high-resolution for clarity of diagrams and text. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, boxer twin Displacement: 848 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 10.0:1 Valve Train: Overhead camshafts (OHC), 4 valves per cylinder, pushrod actuation (common for BMW boxer twins). Performance Horsepower: Approx. 70-73 hp (at crankshaft) Torque: Approx. 75 Nm (55 lb-ft) (at crankshaft) Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection (EFI) Fuel Type: Unleaded gasoline, minimum 91 octane (RON) Lubrication Oil Type: SAE 20W-50 motorcycle oil (API SG or higher recommended for this era) Oil Capacity: Approx. 2.75 liters (including oil filter) 🔧 Transmission Standard Gearbox: 5-speed manual transmission Clutch: Single dry plate clutch Final Drive: Shaft drive with single-sided swingarm Features Transmission Oil: Hypoid gear oil, SAE 80W-90 (for gearbox and final drive) Transmission Oil Capacity: Gearbox: Approx. 1.5 liters; Final Drive: Approx. 0.18 liters 📐 Dimensions Exterior Length: Varies by model (R vs. C variant), typically around 2200 mm Width: Varies by model, typically around 900 mm Height: Varies by model, typically around 1300 mm Weights Dry Weight: Approx. 210-215 kg Gross Vehicle Weight Rating: Approx. 440 kg 🛡️ Safety Features Ratings Crash Testing: N/A (Motorcycle safety standards differ from automotive; focus is on design and rider protection) Active Features Brakes: Dual disc front brakes, single disc rear brake. Optional ABS (Anti-lock Braking System) likely available on some models. Suspension: Telelever and Paralever systems contribute to stability and predictable handling. Passive Features Lighting: Halogen headlight, tail light, brake lights, turn signals. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, tachometer, odometer, fuel gauge, indicator lights. No integrated infotainment systems typical of modern motorcycles. Driver Assistance ABS: Optional ABS available on certain R850R/R850C configurations of this era. 🔧 Maintenance Service Intervals Oil Change: Every 10,000 km or annually, whichever comes first. Major Service: Valve clearance check and adjustment every 20,000 km. Spark plug replacement every 20,000 km. Brake Fluid: Replace brake fluid every 2 years. Fluid Specifications Engine Oil Spec: SAE 20W-50, API SG or higher. Gearbox Final Drive Oil Spec: Hypoid gear oil, SAE 80W-90. Coolant Type: If equipped with oil cooler and potentially coolant-cooled elements, typically a 50/50 mix of distilled water and ethylene glycol-based antifreeze. (Note: R850R is primarily air-cooled, oil-cooled). Known Issues Common Wear Items: Clutch wear, brake pad wear, swingarm pivot bearings, Telelever seal leaks, aging fuel lines. Electrical Potential Issues: Corrosion on connectors, aging battery terminals, regulator/rectifier issues (less common than on later models but possible). Engine Specific: Occasional idle issues due to throttle body or sensor problems, exhaust header pipe leaks. 📚 Vehicle History Brand Heritage Heritage: BMW Motorrad, founded in 1916, has a long and...