This manual covers the motorcycle, produced from 1994 to 1996. As part of the esteemed R series, the R850R is characterized by its air-cooled, horizontally opposed twin-cylinder (Boxer) engine, a hallmark of the brand's engineering since the 1920s. Featuring a robust steel tube frame, Telelever front suspension for enhanced handling, and a reliable shaft drive, this model was designed as a capable sport touring and roadster machine. Its legacy is built on the brand's reputation for quality, durability, and the distinctive character of its boxer engine configuration, offering riders a comfortable and dependable experience. This comprehensive Service and Repair Manual is intended for professional technicians and experienced DIY mechanics working on the R850R. It provides detailed guidance on all major systems, including engine overhaul, transmission service, chassis and suspension maintenance, brake system repairs, and electrical system troubleshooting. The manual covers routine maintenance procedures, diagnostic strategies for common issues, and in-depth repair instructions with specifications and tolerances. Its purpose is to facilitate the accurate and efficient upkeep and repair of the vehicle, ensuring its continued performance and longevity. 🏷️ Basic Information Identification Make: BMW Model: R850R Model Variant: R850R Production Years Covered: 1994-1996 Generation Model Generation: First Generation (pre-1997 models) Codes Engine Code Family: M255 (Air-cooled Boxer Twin) 👋 Introduction Market Position Motorcycle Segment: Sport Touring / Roadster Target Demographic: Riders seeking a reliable, comfortable, and characterful touring machine with BMW's engineering pedigree. Competitive Analysis Key Competitors: Honda ST1100 Pan European, Yamaha Diversion XJ600S, Kawasaki GTR1000. Key Features Engine Layout: Air-cooled, horizontally opposed twin-cylinder (Boxer) Drivetrain: Shaft drive Frame Type: Steel tube frame Suspension Type: Telelever front suspension (BMW's signature), Monolever rear swingarm. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Target Audience: Professional Technicians and Experienced DIY Mechanics Page Count Estimated Page Count: Approximately 300-400 pages (typical for this era of BMW motorcycle manuals) Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Complete overhaul, disassembly, assembly, lubrication, cooling system, fuel system, ignition system, exhaust system, engine management (ECU diagnostics, sensor testing). Transmission: Gearbox disassembly and assembly, clutch operation and adjustment, final drive, driveshaft, lubrication. Chassis: Frame inspection and repair, suspension (front forks, rear shock absorber), steering system, wheel bearings. Brakes: Hydraulic brake system (front and rear), ABS system (if equipped), brake pad replacement, caliper service, brake fluid replacement, bleeding procedures. Electrical System: Wiring diagrams, battery, starter motor, alternator, lighting system, instrumentation, horn, fuses, relays, ignition switch, fault finding. Fuel System: Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, idle control valve, air filter. Bodywork And Fittings: Fairings, seat, handlebars, footpegs, luggage systems, mirrors, minor body panel repairs. Procedures Included Scheduled Maintenance: Oil and filter changes, spark plug replacement, air filter cleaning/replacement, brake fluid flush, clutch fluid flush, valve clearance adjustment, driveshaft spline lubrication. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues, symptom-based troubleshooting guides. Repair And Rebuild: Detailed step-by-step instructions for engine component replacement, gearbox repairs, suspension overhauls, brake caliper rebuilds, electrical component replacement. Specifications And Tolerances: Torque specifications for all fasteners, bearing clearances, piston-to-cylinder wall clearance, valve lash settings. Technical Depth Depth: Comprehensive, covering basic adjustments to full engine and transmission rebuilds. Includes detailed diagrams and exploded views. 📊 Manual Specifications File Format Digital File Type: PDF Searchability: Typically text-searchable (OCR processed) Print Quality Image Resolution: High-resolution scans of original technical diagrams and photographs. Binding Type Original Binding Type: Likely Spiral-bound or Perfect-bound for professional workshop use. Paper Type Original Paper Type: Heavy-duty, durable paper stock suitable for workshop environments. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, horizontally opposed twin-cylinder (Boxer) Displacement: 848 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 9.0:1 Valve Actuation: SOHC (Single Overhead Camshaft) per cylinder, 2 valves per cylinder Power Output: Approximately 70 HP (51 kW) at 7,250 RPM Torque Output: Approximately 75 Nm (55 lb-ft) at 5,500 RPM Performance Top Speed: Approx. 190 km/h (118 mph) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline, minimum 91 RON (Octane Rating) Lubrication Oil Type: SAE 20W-50 or 10W-40 (API SG or higher) Oil Capacity: Approx. 2.75 liters (with filter change) 🔧 Transmission Standard Type: 5-speed manual gearbox Final Drive: Shaft drive Features Clutch: Single dry plate, cable-operated clutch Transmission Oil Type: SAE 75W-90 (API GL-5) Gear Oil Transmission Oil Capacity: Approx. 0.25 liters 📐 Dimensions Exterior Length: Approx. 2,150 mm (84.6 in) Width: Approx. 900 mm (35.4 in) (including mirrors) Height: Approx. 1,360 mm (53.5 in) (seat height adjustable) Weights Dry Weight: Approx. 210 kg (463 lbs) Wet Weight: Approx. 230 kg (507 lbs) Gross Vehicle Weight Rating: Not explicitly specified, but generally around 450 kg (992 lbs). 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable for motorcycles in the same way as cars. Focus is on rider safety through design....