🏷️ Basic Information Identification Make: BMW Model: R850R Year: 2000 Codes Engine Code: M254 Chassis Code: R28 👋 Introduction Market Position Positioning: The R850R was positioned as a more accessible, user-friendly alternative to the larger R1100/R1150 models, focusing on comfort, touring, and everyday usability with BMW's characteristic boxer-twin engineering. Competitive Analysis Competitors: Competed against models from Moto Guzzi (e.g., California), Ducati (e.g., ST2), Honda (e.g., ST1100 - though higher displacement), and Yamaha (e.g., FJ1200). Key Features Features: Torquey boxer-twin engine, shaft drive, comfortable ergonomics, ABS (optional), touring capability, BMW build quality. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Page Count Estimated Pages: 300+ Manual Type Type: Factory Authorized Service Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Complete disassembly, assembly, tuning, diagnostics, fuel injection, ignition system, cooling system (air-cooled). Transmission: Gearbox inspection, repair, clutch service, final drive. Electrical: Wiring diagrams, component testing, lighting, ignition switch, starter, alternator, battery, electronic control units (ECU). Chassis And Suspension: Front forks (telescopic), rear suspension (Paralever), steering head bearings, wheel bearings, brake system (ABS optional). Bodywork And Frame: Frame inspection, body panels, fuel tank, seat, fairings, exhaust system. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, valve clearance adjustment, lubrication. Diagnostics: Troubleshooting guides, fault code interpretation (if applicable via OBD or diagnostic tools), common problem diagnosis. Repair: Component replacement, overhauls, seal replacement, rebuild procedures. Technical Depth Depth: Comprehensive: From basic rider maintenance to complete engine and gearbox rebuilds, including electrical system troubleshooting. 📊 Manual Specifications File Format Digital Features: Searchable text, printable pages, bookmark functionality (depending on PDF source). Print Quality Print Quality Digital: High-resolution scans, clear diagrams and text. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ 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 Valvetrain: 2 valves per cylinder, pushrod actuated Performance Horsepower: 70 hp (51 kW) @ 7,000 rpm Torque: 75 Nm (55 lb-ft) @ 5,500 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (Bosch Motronic ME 7.2) Fuel Type: Unleaded gasoline, minimum 91 octane (RON+MON)/2 Lubrication Oil Type: SAE 20W-50 API SG or higher (check manual for specific BMW approval) Oil Capacity: Approx. 2.7 liters (2.9 US qt) with filter change 🔧 Transmission Standard Type: 5-speed manual gearbox Optional Type: N/A (This model typically came with a manual transmission only) Features Drive Type: Shaft drive to rear wheel Clutch Type: Single dry plate, diaphragm spring Gearbox Oil Type: SAE 75W-90 API GL-5 (check manual for specific BMW approval) Gearbox Oil Capacity: Approx. 0.7 liters (0.7 US qt) 📐 Dimensions Exterior Length: Approx. 2,230 mm (87.8 in) Width At Handlebars: Approx. 860 mm (33.9 in) Height At Seat: Approx. 825 mm (32.5 in) (standard seat) Weights Dry Weight: Approx. 213 kg (470 lbs) Gross Vehicle Weight Rating: Approx. 450 kg (992 lbs) Fuel Tank Capacity: 20 liters (5.3 US gal), including 4-liter reserve 🛡️ Safety Features Ratings ABS Availability: Optional (BMW Integral ABS) Active Features Braking System: Dual front disc brakes (2 x 305 mm), single rear disc brake (265 mm). Optional ABS. Lighting: Halogen headlamp, LED taillight, clear turn signal lenses. Passive Features Chassis Design: Steel tube frame providing rigidity and rider protection. Tire Specifications Front: 110/80 ZR18 Tire Specifications Rear: 140/80 R17 💡 Technology Features Infotainment Audio System: N/A (Typically no integrated infotainment system on this model; aftermarket options available). Driver Assistance ABS: Optional Integral ABS system, which combines braking actuation for both wheels. Connectivity Smartphone Integration: N/A Instrumentation Dashboard: Analog speedometer and tachometer, fuel gauge, warning lights, clock. 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,200 miles) or annually, whichever comes first. Valve Clearance Interval: Every 20,000 km (12,400 miles) or as recommended by the manual. Air Filter Inspection: Inspect every 10,000 km (6,200 miles), replace as needed. Fluid Specifications Brake Fluid: DOT 4 (check manual for specific BMW approval and replacement interval) Coolant: N/A (Air-cooled engine) Final Drive Oil: SAE 75W-90 API GL-5 (check manual for specific BMW approval and capacity) Known Issues Common Wear Items: Clutch wear, alternator brushes, wheel bearings, steering head bearings, fuel pump relays, exhaust gasket leaks. Electrical Gremlins: Can sometimes suffer from intermittent electrical issues due to wiring harness wear or corrosion, especially around connectors. ABS system issues if equipped. Engine Vibrations: While boxer twins are known for their character, prolonged rough running can indicate need for fuel system or ignition tuning. 📚 Vehicle History Brand Heritage Heritage: BMW Motorrad has a long-standing reputation for producing durable, reliable, and technologically advanced motorcycles, particularly known for its boxer-twin engine configuration and shaft drive. Model Evolution Predecessor: The R850R is an evolution of the R-series boxer platform, sharing much of its engineering with the larger R1100R...