🏷️ Basic Information Identification Make: BMW Model: R1150GS Year: 1998 Codes Chassis Code: R259 👋 Introduction Market Position Segment: Large-displacement adventure touring motorcycle Reputation: Renowned for its ruggedness, touring capability, and off-road prowess. Competitive Analysis Competitors: Other large-bore adventure bikes of the era, such as the Honda Africa Twin, Triumph Tiger, and KTM Adventure models. Key Features Unique Selling Points: Torque-rich boxer engine, Telelever front suspension for improved handling and comfort, robust build quality, extensive aftermarket support, exceptional long-distance touring capabilities. 📋 Manual Details Coverage Areas Primary Coverage: Full Service, Repair, Maintenance, Rebuilding, Refurbishing, Restoration Page Count Estimated Page Count: High (comprehensive, typically 500+ pages for this type of manual) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (likely PDF, given description) 📖 Manual Coverage Systems Covered Engine: Detailed breakdown of the boxer twin engine, including top-end, bottom-end, valve adjustments, timing, fuel injection, ignition system Transmission: Clutch, gearbox, final drive (including driveshaft and differential) Electrical System: Wiring diagrams, component testing, starter system, charging system (alternator, battery), lighting, instrumentation, ABS system Suspension: Front Telelever and rear Paralever suspension systems, forks, shock absorbers, adjustments Brakes: Hydraulic systems, caliper maintenance, fluid replacement, ABS component servicing Fuel System: Fuel pump, injectors, throttle bodies, fuel pressure testing Bodywork And Chassis: Frame inspection, fairings, seat, fuel tank removal and installation, luggage systems Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, lubrication, brake bleeding, tire pressure checks, air filter servicing Diagnostics: Troubleshooting common problems, diagnostic procedures for electrical and mechanical issues, error code interpretation (if applicable) Repair: Engine rebuilds, transmission overhauls, suspension servicing, brake system repairs, electrical component replacement Rebuilding And Restoration: Complete disassembly and reassembly guidance for comprehensive restoration projects Technical Depth Depth: Comprehensive, covering basic to advanced repair and overhaul procedures, suitable for experienced DIY mechanics and professional technicians 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval Printability: Printable pages for convenient use during service Print Quality Image Resolution: High resolution for clear diagrams and images Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, horizontally opposed twin-cylinder (Boxer) Displacement: 1130 cc (1.13 Liters) Bore X Stroke: 98 mm x 73.5 mm Valve Actuation: DOHC (Double Overhead Camshafts), 4 valves per cylinder Cooling System: Air/Oil cooled Performance Horsepower: Approx. 95 hp @ 7250 rpm (actual may vary slightly by market) Torque: Approx. 73 lb-ft @ 5500 rpm (actual may vary slightly by market) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Bosch Motronic MA 2.4 Fuel Type: Unleaded gasoline, minimum 91 octane (RON+MON)/2 Engine Internals Compression Ratio: 10.0:1 🔧 Transmission Standard Gearbox: 6-speed manual Clutch: Single dry plate, hydraulically actuated Final Drive: Shaft drive Features Transmission Type: Integral gearbox within crankcase 📐 Dimensions Exterior Length: Approx. 2,230 mm (87.8 in) Width: Approx. 915 mm (36.0 in) (over handguards) Height: Approx. 1,405 mm (55.3 in) (to handlebar center) Weights Dry Weight: Approx. 220 kg (485 lbs) Wet Weight: Approx. 238 kg (525 lbs) (with standard fluids) Gross Vehicle Weight Rating: Approx. 430 kg (948 lbs) Payload Capacity: Approx. 192 kg (423 lbs) Capacities Fuel Tank Capacity: 25 Liters (6.6 US gal), including approx. 4 Liters reserve 🛡️ Safety Features Ratings ABS: BMW Motorrad Integral ABS (Optional on some models, standard on many R1150GS variants) Active Features Braking System: Dual 305 mm discs with 4-piston calipers (front), Single 276 mm disc with 2-piston caliper (rear) Lighting: Halogen headlight, LED taillight, turn signals Passive Features Chassis Design: Trellis frame for rigidity and stability Handguards: Standard handguards for protection from elements and debris 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer and speedometer, digital display for odometer, trip meters, fuel level, gear indicator (on some models). Driver Assistance ABS: Integral ABS II (optional on some early models, standard on later ones) offering linked braking and anti-lock functionality. Connectivity Accessories: Provision for heated grips, accessory power sockets, cruise control (on some variants). 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km or annually (check manual for specific grade) Valve Adjustment Interval: Every 20,000 km (requires checking and adjustment of tappet clearance) Spark Plug Replacement: Every 20,000 km (refer to manual for specific plug type and gap) Final Drive Oil Change: Every 20,000 km Fluid Specifications Engine Oil: API SG/SH/SJ, ACEA A2/A3; viscosity grade 15W-50 or 20W-50 (consult manual for precise recommendation and temperature suitability) Engine Oil Capacity: Approx. 4 Liters (with filter change) Brake Fluid: DOT 4 (or DOT 5.1 if specified for ABS systems, consult manual) Transmission Oil: BMW recommends specific gearbox oil (e.g., SAF-XJ 75W-140 for final drive, SAE 75W-90 for gearbox, consult manual for exact part numbers/specs) Coolant: Not applicable for air/oil cooled engine, but check oil cooler system if applicable. Known Issues Common Wear Items: Clutch friction plates, fuel pump,...