🏷️ Basic Information Identification Make: BMW Model: R850R Model Variant: R850GS Model Years Covered: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 Codes Chassis Code: R259 👋 Introduction Market Position Market Segment: Adventure Touring / Sport Touring Motorcycle Competitive Analysis Competitors: Honda VFR750/800, Yamaha Diversion/XJ series, Kawasaki GTR series, Moto Guzzi California/Tonti frame bikes. Key Features Unique Selling Points: BMW's signature boxer twin engine, shaft drive, robust build quality, comfortable ergonomics for long-distance riding, capable on varied surfaces (GS variant). 📋 Manual Details Coverage Areas Manual Type: Workshop Repair Service Manual Language: English Format: PDF Download Coverage Scope: Service, Maintenance, Troubleshooting, Repair 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, tuning, lubrication system, cooling system (air-cooled), fuel injection system (Bosch Motronic), ignition system, exhaust system. Transmission: Gearbox service, clutch operation, final drive (single-sided swingarm with driveshaft), gearbox oil change and inspection. Chassis Suspension: Front suspension (forks), rear suspension (Monolever system with adjustable shock absorber), wheel bearing maintenance, steering head bearing service. Brakes: Front and rear brake system service, ABS (Anti-lock Braking System) troubleshooting and bleeding, brake pad replacement, brake fluid specifications and change intervals. Electrical System: Battery maintenance and testing, charging system (alternator), starter motor, lighting system (headlights, taillights, indicators), instrument cluster, wiring diagrams, fuse identification and replacement. Bodywork Frame: Fairing removal and installation, seat removal, fuel tank servicing, body panel repair and alignment, frame inspection. Procedures Included Maintenance: Regular service checks, oil and filter changes, spark plug replacement, air filter cleaning/replacement, brake inspection, clutch adjustment, valve clearance checks and adjustment. Troubleshooting: Diagnosis of common running issues, electrical faults, starting problems, braking system concerns, suspension irregularities. Repair: Detailed step-by-step instructions for component replacement, rebuilding of sub-assemblies, and general repairs. Diagnostics: Fault code interpretation (if applicable via diagnostic tools), component testing procedures. Torque Specifications: All critical fastener torque values provided for engine, chassis, and suspension components. Special Tools: Identifies required special tools for specific procedures (e.g., flywheel holder, clutch alignment tool). Technical Depth Depth: Comprehensive, covering routine maintenance to complete engine and gearbox rebuilds, advanced electrical diagnostics. Wiring Diagrams: Detailed, system-specific wiring schematics included for troubleshooting. 📊 Manual Specifications File Format File Type: PDF Searchable Text: Yes (typically) Printable: Yes Print Quality Quality: High-resolution, professional scan (assumed for a quality PDF download). Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, boxer-twin (Flat-twin) Displacement: 848 cc (approximately) Bore X Stroke: 90.0 mm x 66.0 mm (approximate) Compression Ratio: 10.0:1 (typical) Valve Train: SOHC (Single Overhead Camshaft) per cylinder, 2 valves per cylinder. Performance Horsepower: Approx. 70-80 hp @ 7000-7500 rpm (depending on specific tuning and regulations) Torque: Approx. 70-75 Nm @ 5000-6000 rpm (depending on specific tuning and regulations) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline (91-98 RON / 87-93 AKI recommended) Fuel Tank Capacity: Approx. 23 liters (5.0 Imp gal / 6.1 US gal) 🔧 Transmission Standard Transmission Type: 5-speed manual Clutch: Single dry plate clutch, hydraulically actuated Optional Optional Transmission: N/A (Standard 5-speed manual) Features Final Drive: Shaft drive to rear wheel via single-sided swingarm (Monolever system) Gearbox Oil Type: GL-5 SAE 75W-90 (or BMW equivalent) 📐 Dimensions Exterior Length: Approx. 2170 mm (R850GS variant) Width: Approx. 910 mm (R850GS variant, including mirrors) Height: Approx. 1300 mm (R850GS variant, to top of windscreen) Wheelbase: Approx. 1430 mm Weights Dry Weight: Approx. 215 kg Curb Weight: Approx. 230 kg (fully fueled) Gross Vehicle Weight Rating: Approx. 440 kg 🛡️ Safety Features Ratings ABS Availability: Optional ABS (BMW Motorrad ABS II) Active Features Braking System: Dual 305mm discs with dual piston calipers (front), Single 276mm disc with dual piston caliper (rear). Lighting: Halogen headlight, LED taillight (typical). Passive Features Frame Construction: Steel tube frame 💡 Technology Features Infotainment Instrumentation: Analog speedometer and tachometer, LCD display for odometer, trip meter, clock, fuel level, and warning lights. Driver Assistance ABS: Optional ABS system with independent front and rear control, or linked system depending on exact build. Connectivity Diagnostic Port: BMW proprietary diagnostic connector for advanced diagnostics (requires specific BMW tools or compatible aftermarket units). 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km or annually (whichever comes first) Valve Check Interval: Every 20,000 km Spark Plug Replacement: Every 20,000 km Fluid Specifications Engine Oil Type: API SG/SH or higher, SAE 15W-40 or 20W-50 (check manual for precise recommendation based on climate) Engine Oil Capacity: Approx. 2.5 liters (with filter change) Brake Fluid Type: DOT 4 Coolant Type: N/A (Air-cooled engine) Known Issues Common Wear Items: Clutch friction plates, paralever ball joint, steering head bearings, rear shock absorber damping. Electrical Quirks: Occasional issues with alternator output or voltage regulator; check wiring loom integrity, especially at the starter solenoid. 📚 Vehicle History Brand Heritage Brand Focus: BMW Motorrad has a long history of producing...