The K1100 LT / RS, produced from 1990 to 1999, represents a pinnacle of sport touring and luxury touring motorcycle engineering. Powered by a liquid-cooled, 1093cc inline four-cylinder engine, these models are renowned for their smooth power delivery, offering approximately 100 horsepower and 74 lb-ft of torque. Key features include a robust steel monocoque frame, a 5-speed shaft drive transmission, and extensive fairings designed for rider protection and comfort, particularly on the LT variant. Optional ABS systems and cruise control on the LT models further enhanced their appeal for long-distance travel. Building on a heritage of engineering excellence and durability, the K1100 series was a significant evolution from its predecessors, offering a high-performance, comfortable, and reliable riding experience. This comprehensive service manual provides detailed guidance for the maintenance, repair, and diagnostics of the K1100 LT / RS. It covers all essential systems, including the engine, fuel injection, cooling, clutch, lubrication, transmission, brakes, suspension, steering, frame, and electrical system. The manual offers step-by-step procedures for routine maintenance tasks such as oil changes and valve adjustments, as well as in-depth instructions for major repairs, component rebuilds, and troubleshooting complex issues. With its detailed technical specifications, wiring diagrams, and diagnostic charts, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their K1100 Series motorcycle. 🏷️ Basic Information Identification Make: BMW Model: K1100 LT / RS Model Codes: K1100LT, K1100RS Generation Generation Identifier: K1100 Series Codes Engine Code: K1100 (inline-four) 👋 Introduction Market Position Positioning: High-performance, luxury sport-touring motorcycle for discerning riders Competitive Analysis Competitors: Honda ST1100, Yamaha FJ1200, Kawasaki GTR1000 Key Features Engine Configuration: Liquid-cooled, inline four-cylinder, 16-valve, DOHC Transmission: 5-speed, shaft drive Frame: Steel monocoque frame Aerodynamics: Extensive fairings for rider protection and comfort (LT variant is more touring-focused) ABS: Optional ABS system on many models 📋 Manual Details Coverage Areas Motorcycle Type: Sport Touring / Luxury Touring Motorcycle Page Count Estimated Page Count: Likely 300-500 pages (typical for a comprehensive FSM) Manual Type Manual Type: Service Manual / Repair Manual / Workshop Manual Language Language: English Format File Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine service, disassembly, assembly, diagnosis Fuel System: Fuel injection system (Bosch Motronic), fuel pump, injectors, lines, fuel tank Cooling System: Radiator, fan, coolant hoses, thermostat, coolant types Engine Top End: Cylinder head, valves, camshafts, timing chain/gears, valve adjustment Clutch: Clutch operation, friction plates, pressure plate, clutch hydraulic system Engine Lubrication: Oil pump, oil filter, oil passages, oil change procedures, oil types Engine Removal Installation: Procedure for removing and refitting the engine from the chassis Crankshaft Transmission: Crankshaft, connecting rods, transmission gears, shifting mechanism, gearbox overhaul Wheels Tires: Wheel bearing service, tire mounting/balancing, tire specifications, wheel removal/installation Final Drive: Driveshaft, universal joint, final drive housing, gear oil specifications Brakes: Front and rear brake systems, hydraulic lines, master cylinders, calipers, brake fluid, ABS (if equipped) Suspension: Front forks (telescopic, possibly with electronic damping for LT), rear shock absorber, suspension adjustments, fork oil, seal replacement Steering: Steering head bearings, steering linkage, handlebar replacement Frame: Chassis inspection, frame components, fairing removal/installation Electrical System: Wiring diagrams, battery, charging system (alternator), ignition system, lighting, instrumentation, starter motor, fuses, relays, troubleshooting Appendix: Torque specifications, general specifications, troubleshooting charts, wiring diagrams Procedures Included Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement, valve checks/adjustments, brake bleeding, drive shaft lubrication Troubleshooting: Diagnostic procedures for common and uncommon issues across all systems Repair: Step-by-step instructions for component repair and replacement (e.g., engine rebuilds, transmission overhaul, brake caliper rebuild) Installation: Instructions for installing major components and accessories Technical Depth Depth: Comprehensive, suitable for professional technicians and experienced DIY mechanics Diagnostics: Detailed diagnostic procedures, including electrical troubleshooting using wiring diagrams and likely referencing on-board diagnostics if applicable Rebuilds: Full engine and transmission rebuild procedures 📊 Manual Specifications File Format File Format Detail: PDF (Portable Document Format) Print Quality Print Quality Suitability: High resolution, suitable for printing clear diagrams and text Binding Type Binding Type Analogy: Digital Equivalent of a professional workshop manual binding (coil-bound or perfect-bound for easy page turning) Paper Type Paper Type Analogy: Digital Equivalent of durable, coated paper suitable for workshop environments ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, 4-stroke Displacement: 1093 cc Bore X Stroke: 77.0 mm x 59.0 mm Compression Ratio: 10.0:1 Valve Train: DOHC, 4 valves per cylinder Performance Horsepower Hp: Approx. 100 hp @ 7500 rpm Torque Lb-Ft: Approx. 74 lb-ft @ 5500 rpm Fuel System Fuel Delivery: Bosch Motronic Fuel Injection Fuel Type: Unleaded gasoline (91 octane or higher recommended) Fuel Tank Capacity: Approx. 21 Liters (5.5 US gallons) 🔧 Transmission Standard Transmission Type: 5-speed manual, constant mesh Final Drive: Shaft drive Features Clutch Type: Wet multi-plate, hydraulically operated 📐 Dimensions Exterior Length Mm: Approx. 2220 mm (LT) Width Mm: Approx. 860 mm...