🏷️ Basic Information Identification Make: BMW Model: R850GS / R850R Year: 1999 Codes Chassis Code: R850R (259) Engine Code: M850 👋 Introduction Market Position Target Audience: BMW R850GS and R850R owners, DIY enthusiasts, independent repair shops, professional mechanics. Competitive Analysis Manual Advantage: Actual genuine factory manual, not a third-party publication, offering comprehensive and accurate data. Key Features Value Proposition: Enables owners to perform maintenance and repairs independently, saving significant labor costs ($50-$60 per hour), and ensuring correct procedures are followed. Content Enhancements: Detailed substeps, critical notes/cautions/warnings, numbered instructions, figure callouts, enlarged inset diagrams, indexed table of contents. 📋 Manual Details Coverage Areas Main Coverage: BMW R850GS and R850R models Model Years Covered: 1999 Page Count Estimated Page Count: Hundreds of pages (exact number not specified, but described as 'complete') Manual Type Type: Factory Service Repair Manual Language Language: English Format Delivery Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Engine top end, Fuel system, Cooling system, Engine lubrication system, Engine management systems, Crankshaft, Transmission Drivetrain Systems: Clutch, Crankshaft/Transmission, Wheels/Tires, Final Drive Chassis Systems: Brakes, Suspension, Steering, Frame Electrical Systems: Electrical System, Wiring diagrams Procedures Included Diagnostic Procedures: Engine fault symptom diagnosis, Advanced troubleshooting guide, Part testing techniques Maintenance Procedures: General maintenance, Scheduled servicing, Fluid checks and changes Repair Procedures: Step-by-step repair instructions, Engine removal/installation, Component overhaul and replacement Specialized Procedures: Tuning procedures, Secret techniques used by top mechanics Technical Depth Depth: Complete factory-level repair and maintenance information, suitable for both owners and professional technicians. Wiring Diagrams: Detailed and comprehensive wiring diagrams for the electrical system are a key feature, aiding in diagnosis and repair. Appendices Appendix Content: Includes general information, troubleshooting guides, and potentially technical data tables not fitting elsewhere. 📊 Manual Specifications File Format Format: PDF Compatibility: Windows and Mac OS Print Quality Printability: Printable without restriction; individual pages or entire manual Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Software Requirements Reader: Adobe PDF Reader Delivery Method: Instant Download Link post-purchase ⚙️ Engine Specifications Primary Engine Engine Type: Air/oil-cooled, four-stroke flat-twin (boxer) engine Displacement: 848 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 10.3:1 Performance Horsepower: 70 hp (approx. 52 kW) at 7,250 rpm Torque: 74.0 Nm (55 lb-ft) at 5,750 rpm Fuel System Fuel Delivery: Electronic fuel injection (Bosch Motronic MA 2.4) Fuel Type: Unleaded gasoline, minimum octane rating 91 (RON+MON)/2 Engine Management Ignition: Digital ignition with knock sensor 🔧 Transmission Standard Type: 5-speed manual gearbox Optional Type: Not applicable for this model year Features Clutch: Single dry plate clutch, hydraulically operated Final Drive: Shaft drive to rear wheel 📐 Dimensions Exterior Length: Specific lengths for GS and R models differ; manual would contain exact figures. Width: Specific widths for GS and R models differ; manual would contain exact figures. Height: Specific heights for GS and R models differ; manual would contain exact figures. Weights Dry Weight: R850R: approx. 207 kg (456 lbs); R850GS: approx. 215 kg (474 lbs) Gross Vehicle Weight Rating: Specified in manual, typically around 400-440 kg. Fuel Tank Capacity: R850R: 20 Liters (5.3 US gal); R850GS: 20 Liters (5.3 US gal) (some sources indicate 30L for GS) 🛡️ Safety Features Ratings Certification: CE homologation, meets relevant EU safety standards. Active Features Braking System: Optional ABS II system available for specific models/markets. Lighting: Halogen headlamp, LED taillight and indicators. Passive Features Chassis Design: Robust steel tube frame providing stability. 💡 Technology Features Infotainment Instrumentation: Analog tachometer, digital speedometer, odometer, trip odometer, clock, gear indicator, fuel gauge, warning lights. Driver Assistance ABS: Optional ABS II system available on some models for enhanced braking safety. Connectivity Diagnostics: On-board diagnostics (OBD) port for electronic system checks, with factory diagnostic tools covered in the manual. 🔧 Maintenance Service Intervals Oil Change: Every 10,000 km (6,000 miles) or annually, whichever comes first. Major Service: Every 20,000 km (12,000 miles) or every two years, typically includes valve adjustment, spark plug replacement, and fluid flushes. Fluid Specifications Engine Oil: BMW Motorrad Advantec Ultimate Performance Engine Oil SAE 15W-50 (or equivalent API SG/JASO MA specification). Gearbox Oil: BMW Gear Oil SAE 75W/90 (or equivalent API GL-5 specification). Final Drive Oil: BMW Hypoid Gear Oil SAE 85W/90 (or equivalent API GL-5 specification). Brake Fluid: DOT 4 brake fluid. Coolant: BMW Antifreeze/Coolant (blue) mixed with distilled water at a 1:1 ratio. Known Issues Common Wear Items: Clutch wear, swingarm pivot bearings, alternator brushes, fuel pump issues, starter motor solenoid. Common Issues Electrical Faults: Wiring harness chafing, regulator/rectifier failures, dashboard indicator light issues. 📚 Vehicle History Brand Heritage Heritage: BMW Motorrad, established in 1923, renowned for boxer engines, durable touring bikes, and adventure motorcycles. Model Evolution Genesis: The R850 series was introduced as a more accessible and slightly less powerful alternative to the R1100 series, sharing many components and design philosophies. The R850GS offered adventure-touring...