🏷️ Basic Information Identification Make: BMW Model: R850R Model Variant: R850GS Model Years Covered: 1999 Codes Engine Code: 259 👋 Introduction Market Position Vehicle Segment: Touring/Adventure Motorcycle Target Audience: BMW R850GS owners, independent motorcycle mechanics, and enthusiasts Competitive Analysis Key Competitors Era: Honda Africa Twin, Yamaha Super Ténéré, Kawasaki KLR, Suzuki V-Strom (in broader adventure touring context) Key Features Model Philosophy: Versatile dual-sport capability with BMW's characteristic engineering and rider comfort Manual Advantage: Provides in-depth technical knowledge for effective DIY maintenance and repair, saving costs and ensuring optimal performance. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Language: English Region Applicability: Global (Mechanic Standard) Page Count Estimated Page Count: Likely 500+ pages (typical for comprehensive workshop manuals) Manual Type Manual Type: Workshop Manual / Service Manual / Repair Manual Format Format Type: Digital (likely PDF), potentially available in print Searchable Text: Yes (if PDF, allows for quick information retrieval by keyword) 📖 Manual Coverage Systems Covered Engine Mechanical: Full engine disassembly, assembly, inspection, tuning, and repair Fuel System: Fuel injection system (components, diagnosis, calibration), fuel pump, lines, filters Ignition System: Ignition coils, spark plugs, ECU control, timing Transmission Drivetrain: Clutch operation, gearbox components, final drive, driveshaft maintenance Chassis Suspension: Front and rear suspension components, forks, shock absorbers, bearings, geometry adjustments Brakes: Brake system diagnosis, ABS components, caliper service, rotor replacement, fluid flush Electrical System: Wiring diagrams, component testing, battery, alternator, starter, lighting, instrumentation Bodywork Frame: Fairings, body panels, frame inspection, seat, fuel tank removal and installation Exhaust System: Exhaust components, lambda sensors (if applicable), catalytic converter Cooling System: Oil cooling system, oil circulation, oil filter replacement Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, valve clearance adjustment Troubleshooting: Diagnostic procedures, common fault finding, error code interpretation (if applicable) Component Overhaul: Detailed step-by-step instructions for rebuilding major components Torque Specifications: Comprehensive list of all critical torque values for fasteners Special Tools: Identification and usage of BMW-specific or required special tools Wheel Bearing Service: Front and rear wheel bearing inspection and replacement Steering Head Bearing Service: Inspection and adjustment of steering head bearings Throttle Cable Adjustment: Adjustment and replacement of throttle cables Technical Depth Diagnostic Level: Advanced, including electrical system diagnostics and fuel injection system tuning Repair Scope: Complete mechanical and electrical repair, from basic servicing to major component overhaul Technical Drawings: Includes detailed diagrams and exploded views of components Engine Management System Diagnosis: Detailed explanation of the Motronic 2.4 system, including sensor testing and ECU troubleshooting. 📊 Manual Specifications File Format Digital Format: PDF (Searchable, Printable) Print Quality Print Clarity: High-resolution diagrams and text for clear visibility (if printed) Binding Type Binding: Perfect Bound or Spiral Bound (for printed versions) Paper Type Paper Quality: Durable paper stock suitable for workshop environments (for printed versions) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, two-cylinder boxer engine Displacement: 848 cc Bore X Stroke: 90.0 mm x 66.0 mm Compression Ratio: 10.0:1 Performance Horsepower: 70 HP (52 kW) at 7,250 rpm (approximate, may vary slightly) Torque: 75 Nm (55 lb-ft) at 5,500 rpm (approximate, may vary slightly) Fuel System Fuel Delivery: Bosch Motronic MA 2.4 Fuel Injection Fuel Type: Unleaded Petrol (95 RON recommended) Engine Internals Valve Train: Single Overhead Camshaft (SOHC), two valves per cylinder Lubrication Oil Type: SAE 20W-50 or SAE 15W-50 Motorcycle Oil (API SG or higher) Oil Capacity With Filter: 3.0 Liters (approx.) 🔧 Transmission Standard Transmission Type: 5-speed manual gearbox Optional Optional Transmission: None offered for this model year Features Clutch Type: Single dry plate clutch, hydraulically actuated Final Drive: Shaft drive with enclosed universal joint Fluid Specs Gearbox Oil Type: SAE 80W-90 GL-5 (Hypoid Gear Oil) Gearbox Oil Capacity: 0.17 Liters (approx.) 📐 Dimensions Exterior Length: Approx. 2,230 mm (87.8 in) Width At Handlebars: Approx. 920 mm (36.2 in) Height At Seat: Approx. 820 mm (32.3 in) (standard seat height) Weights Dry Weight: Approx. 215 kg (474 lbs) Gross Vehicle Weight: Approx. 450 kg (992 lbs) Wheels Tires Front Wheel Size: 2.50 x 17 Rear Wheel Size: 3.00 x 18 Front Tire Size: 110/80 R17 Rear Tire Size: 140/80 R18 Wheel Bolt Pattern: N/A (Cast Wheels) 🛡️ Safety Features Ratings Safety Certifications: CE Certified (typical for European market, manual covers global standards) Active Features ABS: Optional BMW ABS II system Braking System Type: Dual disc front, single disc rear Passive Features Frame Construction: Steel tube frame Lighting: Halogen headlight, LED taillight (typical) 💡 Technology Features Infotainment Infotainment System: Basic instrumentation: speedometer, tachometer, odometer, fuel gauge, warning lights. No integrated infotainment as per modern standards. Driver Assistance ABS Availability: Optional ABS II system, which can be serviced and diagnosed with this manual. Connectivity Connectivity Features: No electronic connectivity features typical of modern motorcycles. 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,000 miles) or annually, whichever comes first Valve Clearance Check:...