🏷️ Basic Information Identification Make: BMW Model: R 1150 GS Model Family: GS Adventure Series Codes Chassis Code: R21 👋 Introduction Market Position Segment: Dual-sport / Adventure touring motorcycle Reputation: Iconic, renowned for long-distance touring, off-road capability, and robustness. Competitive Analysis Competitors: Honda Africa Twin, Triumph Tiger, Yamaha Ténéré, KTM Adventure series. Key Features Engine Layout: Air/oil-cooled, horizontally opposed twin-cylinder boxer engine. Suspension Design: Telelever front suspension and Monolever rear drive for improved handling and ride comfort. ABS: Integral ABS II braking system for enhanced safety. 📋 Manual Details Coverage Areas Applicable Years: 1999, 2000, 2001, 2002, 2003, 2004, 2005 Page Count Estimated Pages: Hundreds (exact count not specified, implies comprehensive) Manual Type Type: Workshop Service Repair Manual Language Language: English (assumed based on product description context) Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, and troubleshooting for the R21 boxer engine. Fuel System: Fuel injection system (Bosch Motronic), fuel pump, injectors, throttle body, fuel lines. Ignition System: Ignition coils, spark plugs, ECU control, timing. Transmission: 6-speed gearbox, clutch operation (single dry plate), torque converter (optional on some models), gearbox internal components, lubrication. Drive Train: Paralever rear drive, driveshaft, final drive unit (maintenance, lubrication, troubleshooting). Suspension: Front Telelever suspension, rear Monolever with adjustable shock absorber (pre-load, rebound damping), fork seals, bearings. Brakes: Integral ABS II (Anti-lock Braking System) components, hydraulic system, brake fluid bleeding, caliper overhaul, disc maintenance, master cylinders. Electrical System: Wiring diagrams, battery, alternator, starter motor, lighting system (headlights, taillights, indicators), fuse box, relays, diagnostic connectors. Frame And Bodywork: Chassis inspection, frame alignment, fairings, seat, fuel tank, body panel removal and installation, luggage system mounting. Cooling System: Oil cooler system, oil circulation and filtration. Exhaust System: Mufflers, catalytic converter (if equipped), exhaust headers, lambda sensors. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks/replacement, brake fluid flush, tire pressure adjustments, chain lubrication (if applicable, though R1150GS is shaft drive). Troubleshooting: Diagnostic procedures for common and uncommon faults, fault code interpretation (if available in manual). Engine Repair: Top-end rebuild (cylinder head, valves), bottom-end overhaul (crankshaft, connecting rods), piston and ring replacement. Transmission Repair: Gearbox disassembly and reassembly, clutch replacement, bearing checks. Suspension Servicing: Fork seal replacement, shock absorber servicing, linkage lubrication. Brake System Overhaul: Complete ABS unit bleeding, caliper rebuilding, master cylinder replacement. Electrical Diagnostics: Wiring harness inspection, component testing, troubleshooting electrical gremlins. Bodywork Repair: Panel alignment, minor damage repair, mounting hardware specifications. Technical Depth Depth: Comprehensive from basic maintenance to complete engine and gearbox rebuilds, including detailed diagnostic procedures. Diagnostic Focus: Includes procedures for diagnosing issues with fuel injection, ignition, ABS, and electrical systems. Torque Specifications: Detailed torque values for all critical fasteners and components. Clearances And Tolerances: Specifications for engine component clearances, valve lash, and other critical tolerances. 📊 Manual Specifications File Format Compatibility: Viewable on most devices with a PDF reader (computers, tablets, smartphones). Print Quality Resolution: High-resolution, ensuring clarity of diagrams and text. Binding Type Binding: N/A (PDF format) Paper Type Paper Quality: N/A (PDF format) Searchability Text Search: Likely text-searchable PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, horizontally opposed twin-cylinder (Boxer) Displacement: 1130 cc (1130cc) Bore X Stroke: 95 mm x 79 mm Compression Ratio: 10.0:1 Valve Train: 2 valves per cylinder, DOHC (Double Overhead Camshafts), pushrod-actuated (incorrect - it's OHC with pushrods for valve actuation, but the primary drive is cam shafts in the block). Correcting to: OHC, pushrod-actuated valves (via rocker arms). Cooling System: Air/Oil Cooled Performance Horsepower: 95 hp (70 kW) at 7,250 rpm Torque: 98 Nm (72 lb-ft) at 5,500 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) - Bosch Motronic MA 2.4 Fuel Type: Unleaded gasoline, minimum 91 octane (RON+MON)/2 Lubrication Oil Type: API SG, JASO MA certified synthetic or semi-synthetic motorcycle oil, SAE 20W-50 or 15W-50 recommended. Oil Capacity: Approx. 4.0 liters (4.2 US quarts) with filter change 🔧 Transmission Standard Type: 6-speed manual gearbox Optional Type: N/A (though some variants might have had variations, the core is 6-speed manual) Features Clutch: Single dry plate, hydraulically actuated Final Drive: Shaft drive via Paralever system Fluid Specifications Gearbox Oil: API GL-5, SAE 75W-90 synthetic gear oil Gearbox Oil Capacity: Approx. 1.0 liter (1.1 US quarts) Final Drive Oil: API GL-5, SAE 75W-90 synthetic gear oil Final Drive Oil Capacity: Approx. 0.25 liters (0.26 US quarts) 📐 Dimensions Exterior Length: Approx. 2200 mm (86.6 in) Width: Approx. 900 mm (35.4 in) over handlebars Height: Approx. 1420 mm (55.9 in) to top of windshield Seat Height: Approx. 860 mm (33.9 in) (standard seat) Wheelbase: Approx. 1488 mm (58.6 in) Weights Dry Weight: Approx. 230 kg (507 lbs) Wet Weight: Approx. 247 kg (545 lbs) (fully fueled, with oil) Gross Vehicle Weight Rating: N/A (motorcycle) Payload Capacity: N/A (motorcycle) Tanks Fuel Capacity: 26 liters (6.9 US gallons)...