🏷️ Basic Information Identification Make: BMW Model: R850R Year: 1998 Codes Model Code: R850R 👋 Introduction Market Position Market Segment: Touring motorcycle, known for its comfort, reliability, and Boxer engine character. Competitive Analysis Competitors 1998: Honda VFR800, Kawasaki GTR1000, Yamaha FJR1300 (early versions). Key Features Vehicle Design Philosophy: Practical, comfortable, and capable touring motorcycle with BMW's signature Boxer twin engine and shaft drive. 📋 Manual Details Coverage Areas Systems Covered: Engine, Fuel System, Ignition System, Transmission, Drivetrain, Chassis, Suspension, Brakes, Electrical System, Bodywork, Troubleshooting Page Count Page Count: Extensive (specific count not provided, but described as 'very detailed') Manual Type Manual Type: Full Service Repair Manual Language Language: English (Assumed based on product description) Format Format: Digital (PDF or similar electronic format implied by 'manual') 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, repair, and reassembly of the boxer engine, including cylinder heads, pistons, crankshaft, camshafts, valve train. Fuel System: Bosch Motronic fuel injection system components, fuel pump, injectors, pressure regulator, throttle body, and sensors. Ignition System: Ignition coils, spark plugs, timing, and Motronic control unit diagnostics. Transmission And Drivetrain: Clutch operation, gearbox overhaul, final drive maintenance, shaft drive inspection. Chassis And Suspension: Front Telelever suspension, Paralever rear suspension, wheel bearing service, steering head bearing maintenance. Braking System: BMW EVO disc brakes (front and rear), ABS II system troubleshooting and maintenance (if applicable to 1998 model). Electrical System: Wiring diagrams, battery maintenance, starter motor, alternator, lighting system, instrument cluster troubleshooting. Bodywork And Fairings: Removal and installation of body panels, seat, fuel tank, and related components. Procedures Included Routine Maintenance: Oil and filter changes, air filter replacement, spark plug service, lubrication points, brake fluid flush. Troubleshooting Guides: Step-by-step diagnostic procedures for common and uncommon issues, fault code interpretation (if applicable). Repair And Rebuild: Detailed instructions for component overhaul, replacement, and adjustment for all major systems. Technical Data And Specifications: Torque specifications, clearance measurements, fluid types and capacities, electrical resistance values. Technical Depth Depth Of Coverage: Comprehensive, suitable for both novice DIY mechanics and experienced technicians. Covers everything from basic adjustments to full engine rebuilds. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) for universal compatibility and searchability. Print Quality Print Quality: High-resolution scans with clear text and legible diagrams, optimized for printing. Binding Type Binding Type: N/A (Digital format) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, boxer-twin (flat-twin) Displacement: 849 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 10.0:1 (Typical) Valve Train: Overhead camshafts (SOHC), 2 valves per cylinder, pushrod actuated Performance Horsepower Approx: 70 hp @ 7,000 rpm (Approximate, may vary by market/tune) Torque Approx: 77 Nm (57 lb-ft) @ 5,000 rpm (Approximate) Fuel System Fuel Delivery: Electronic Fuel Injection (Bosch Motronic M5.2 or similar) Fuel Type: Unleaded Gasoline (95 RON recommended) Lubrication Oil Capacity With Filter: 3.0 Liters (3.2 US Quarts) Oil Type Recommended: SAE 15W-50 Synthetic or Semi-Synthetic motorcycle oil (refer to manual for specific BMW approval) 🔧 Transmission Standard Transmission Type: 5-speed manual Clutch Type: Single dry plate, hydraulically actuated Features Final Drive: Shaft drive Gearbox Oil Type: SAE 80W-90 GL-5 gear oil 📐 Dimensions Exterior Length Approx: 2170 mm (85.4 in) Width Approx: 800 mm (31.5 in) (Excluding mirrors) Height Approx: 1380 mm (54.3 in) (To handlebars) Weights Dry Weight Approx: 207 kg (456 lbs) Wet Weight Approx: 232 kg (511 lbs) (Approximate, with full fluids) 🛡️ Safety Features Ratings ABS Availability: Optional on some models/markets (ABS II system) Active Features Brakes Front: Dual 305 mm (12.0 in) discs with dual-piston calipers Brakes Rear: Single 276 mm (10.9 in) disc with dual-piston caliper Passive Features Lighting: Halogen headlight, LED taillight (typical for the era) 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer and tachometer, fuel gauge, odometer, trip meter, warning lights. Driver Assistance ABS System Details: BMW ABS II, a reliable two-channel anti-lock braking system (if equipped). Connectivity Onboard Computer: Not typically equipped on the 1998 R850R. Some later models may have had basic computer functions. 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,000 miles) or annually, whichever comes first. Valve Clearance Check: Every 20,000 km (12,000 miles) Final Drive Oil Change: Every 20,000 km (12,000 miles) Fluid Specifications Brake Fluid Type: DOT 4 (refer to manual for specific BMW specification) Coolant Type: N/A (Air-cooled engine) Known Issues Common Wear Items: Clutch wear, fuel pump reliability, alternator output, steering head bearings, exhaust header pipe corrosion. Electrical Gremlins: Intermittent electrical faults related to wiring harness connectors and grounds are not uncommon on older BMWs. 📚 Vehicle History Brand Heritage Bmw Motorcycles Legacy: BMW has a long and storied history in motorcycle manufacturing, particularly known for its boxer engines, shaft drive, and robust touring capabilities. Model Evolution R Series Evolution: The R850R is part of BMW's air-cooled R...