🏷️ Basic Information Identification Make: BMW Model: K1100LT / K1100RS Generation Generation Designation: Second Generation K-Series (Four-Valve) Codes Engine Code: K1100 👋 Introduction Market Position Market Position: The K1100LT and K1100RS were positioned as premium sport-touring and touring motorcycles in the early to mid-1990s, known for their smooth inline-four engines, shaft drive, and advanced (for the time) technology. Competitive Analysis Competitive Analysis: Competed with other high-performance touring bikes from manufacturers like Honda (ST1100), Kawasaki (GTR1000), and Yamaha (FJ1200). Key Features Key Features Vehicle: Four-valve inline-four engine, fuel injection, shaft drive, ABS (optional on RS, standard on later LT), comfortable ergonomics (especially LT), robust build quality. Key Features Manual: Comprehensive diagnostic and repair data, detailed illustrations and diagrams, specific torque values, maintenance schedules, and troubleshooting flowcharts. Essential for DIY owners and independent workshops. 📋 Manual Details Coverage Areas Coverage Areas: Full service and repair for BMW K1100LT and K1100RS models Page Count Page Count: Detailed page count not specified in provided information. Assumed to be comprehensive for a service manual. Manual Type Manual Type: Service/Repair Manual Language Language: English (Assumed based on product description and typical manual availability) Format Format: Digital (Likely PDF, given common availability for older models and the seller's description). 📖 Manual Coverage Systems Covered Engine System: Engine mechanical, fuel injection, ignition, cooling, exhaust, lubrication systems Transmission System: Clutch, gearbox, final drive (shaft drive), troubleshooting and repair Electrical System: Wiring diagrams, lighting, charging system (alternator, regulator), starting system, ECU, ABS, instrument cluster, sensors Chassis System: Frame, suspension (front forks, rear monoshock), steering, wheels, brakes (disc brakes, ABS components) Bodywork And Fairings: Body panel removal and installation, fairing components, luggage systems (LT specific) Procedures Included Maintenance Procedures: Scheduled maintenance, oil changes, filter replacements, valve clearance checks, coolant flushes, brake fluid changes, spark plug replacement Diagnostic Procedures: Troubleshooting guides for common issues, fault code diagnosis (if applicable via diagnostics), electrical testing Repair Procedures: Step-by-step instructions for component removal, overhaul, and installation (e.g., engine rebuild, transmission overhaul, suspension repair) Special Tools: Identification and usage of BMW special tools required for specific repairs and adjustments Technical Depth Technical Depth: Comprehensive from basic maintenance to in-depth engine and component overhaul, including electrical system diagnostics and ABS functionality. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) - common for digital service manuals. Print Quality Print Quality: High-resolution images and clear text for easy readability and printing. Binding Type Binding Type: N/A for digital format. If printed, would typically be spiral-bound or professionally bound for workshop use. Paper Type Paper Type: N/A for digital format. If printed, would typically be durable, possibly glossy or coated paper to withstand workshop conditions. ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, four-stroke, inline four-cylinder Displacement: 1093 cc (1.1 Liters) Bore X Stroke: 76.5 mm x 60 mm Compression Ratio: 10.2:1 Valve Train: DOHC, 4 valves per cylinder Performance Horsepower: Approx. 100 hp (74 kW) at 8000 rpm (varies slightly by year/spec) Torque: Approx. 101 Nm (74 lb-ft) at 6000 rpm (varies slightly by year/spec) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) with central throttle body Fuel Type: Unleaded premium gasoline (95-98 RON) Fuel Tank Capacity: 21 Liters (5.5 US gallons) Cooling System Cooling Method: Liquid-cooled Lubrication System Oil Type: API SG or higher, SAE 20W-40 or 10W-40 motorcycle specific oil Oil Capacity With Filter: Approx. 4.5 Liters (4.8 US quarts) Engine Components Engine Mounting: Transverse, 360-degree crank 🔧 Transmission Standard Transmission Type: 5-speed manual gearbox Optional Optional Transmission: N/A (Manual transmission only) Features Clutch Type: Hydraulically operated, dry single-plate clutch Final Drive: Shaft drive with universal joint Fluid Specifications Transmission Oil Type: Hypoid gear oil, SAE 90 (API GL-5) Fluid Capacities Final Drive Oil Capacity: Approx. 200 ml (0.21 US quarts) 📐 Dimensions Exterior Length: K1100LT: Approx. 2300 mm (90.5 in) / K1100RS: Approx. 2230 mm (87.8 in) Width: K1100LT: Approx. 890 mm (35 in) / K1100RS: Approx. 850 mm (33.5 in) Height: K1100LT: Approx. 1450 mm (57.1 in) / K1100RS: Approx. 1240 mm (48.8 in) Wheelbase: Approx. 1515 mm (59.6 in) Weights Dry Weight: K1100LT: Approx. 245 kg (540 lbs) / K1100RS: Approx. 225 kg (496 lbs) Wet Weight: K1100LT: Approx. 270 kg (595 lbs) / K1100RS: Approx. 245 kg (540 lbs) Maximum Load: Approx. 210 kg (463 lbs) Wheels And Tires Front Tire: 120/70 ZR 17 Rear Tire: 170/60 ZR 17 Front Wheel Size: 3.50 x 17 Rear Wheel Size: 4.50 x 17 Bolt Pattern: 4 x 100mm 🛡️ Safety Features Ratings Safety Ratings: No formal crash test ratings typically available for motorcycles of this era in the same way as cars. Focus on active safety features. Active Features ABS: BMW Integral ABS II (optional on RS, standard on later LT models) Braking System Front: Dual 330 mm disc brakes, twin piston calipers Braking System Rear: Single 280 mm disc...
The K1100LT and K1100RS were positioned as premium sport-touring and touring motorcycles in the early to mid-1990s, known for their smooth inline-four engines, shaft drive, and advanced (for the time) technology.
Competitive Analysis
Competitive Analysis:
Competed with other high-performance touring bikes from manufacturers like Honda (ST1100), Kawasaki (GTR1000), and Yamaha (FJ1200).
Key Features
Key Features Vehicle:
Four-valve inline-four engine, fuel injection, shaft drive, ABS (optional on RS, standard on later LT), comfortable ergonomics (especially LT), robust build quality.
Key Features Manual:
Comprehensive diagnostic and repair data, detailed illustrations and diagrams, specific torque values, maintenance schedules, and troubleshooting flowcharts. Essential for DIY owners and independent workshops.
📋 Manual Details
Coverage Areas
Coverage Areas:
Full service and repair for BMW K1100LT and K1100RS models
Page Count
Page Count:
Detailed page count not specified in provided information. Assumed to be comprehensive for a service manual.
Manual Type
Manual Type:
Service/Repair Manual
Language
Language:
English (Assumed based on product description and typical manual availability)
Format
Format:
Digital (Likely PDF, given common availability for older models and the seller's description).
📖 Manual Coverage
Systems Covered
Engine System:
Engine mechanical, fuel injection, ignition, cooling, exhaust, lubrication systems
Transmission System:
Clutch, gearbox, final drive (shaft drive), troubleshooting and repair
Troubleshooting guides for common issues, fault code diagnosis (if applicable via diagnostics), electrical testing
Repair Procedures:
Step-by-step instructions for component removal, overhaul, and installation (e.g., engine rebuild, transmission overhaul, suspension repair)
Special Tools:
Identification and usage of BMW special tools required for specific repairs and adjustments
Technical Depth
Technical Depth:
Comprehensive from basic maintenance to in-depth engine and component overhaul, including electrical system diagnostics and ABS functionality.
📊 Manual Specifications
File Format
File Format:
PDF (Portable Document Format) - common for digital service manuals.
Print Quality
Print Quality:
High-resolution images and clear text for easy readability and printing.
Binding Type
Binding Type:
N/A for digital format. If printed, would typically be spiral-bound or professionally bound for workshop use.
Paper Type
Paper Type:
N/A for digital format. If printed, would typically be durable, possibly glossy or coated paper to withstand workshop conditions.
⚙️ Engine Specifications
Primary Engine
Engine Type:
Liquid-cooled, four-stroke, inline four-cylinder
Displacement:
1093 cc (1.1 Liters)
Bore X Stroke:
76.5 mm x 60 mm
Compression Ratio:
10.2:1
Valve Train:
DOHC, 4 valves per cylinder
Performance
Horsepower:
Approx. 100 hp (74 kW) at 8000 rpm (varies slightly by year/spec)
Torque:
Approx. 101 Nm (74 lb-ft) at 6000 rpm (varies slightly by year/spec)
Fuel System
Fuel Delivery:
Bosch Motronic Electronic Fuel Injection (EFI) with central throttle body
Fuel Type:
Unleaded premium gasoline (95-98 RON)
Fuel Tank Capacity:
21 Liters (5.5 US gallons)
Cooling System
Cooling Method:
Liquid-cooled
Lubrication System
Oil Type:
API SG or higher, SAE 20W-40 or 10W-40 motorcycle specific oil
Oil Capacity With Filter:
Approx. 4.5 Liters (4.8 US quarts)
Engine Components
Engine Mounting:
Transverse, 360-degree crank
🔧 Transmission
Standard
Transmission Type:
5-speed manual gearbox
Optional
Optional Transmission:
N/A (Manual transmission only)
Features
Clutch Type:
Hydraulically operated, dry single-plate clutch
Final Drive:
Shaft drive with universal joint
Fluid Specifications
Transmission Oil Type:
Hypoid gear oil, SAE 90 (API GL-5)
Fluid Capacities
Final Drive Oil Capacity:
Approx. 200 ml (0.21 US quarts)
📐 Dimensions
Exterior
Length:
K1100LT: Approx. 2300 mm (90.5 in) / K1100RS: Approx. 2230 mm (87.8 in)
Width:
K1100LT: Approx. 890 mm (35 in) / K1100RS: Approx. 850 mm (33.5 in)
Height:
K1100LT: Approx. 1450 mm (57.1 in) / K1100RS: Approx. 1240 mm (48.8 in)
Wheelbase:
Approx. 1515 mm (59.6 in)
Weights
Dry Weight:
K1100LT: Approx. 245 kg (540 lbs) / K1100RS: Approx. 225 kg (496 lbs)
Wet Weight:
K1100LT: Approx. 270 kg (595 lbs) / K1100RS: Approx. 245 kg (540 lbs)
Maximum Load:
Approx. 210 kg (463 lbs)
Wheels And Tires
Front Tire:
120/70 ZR 17
Rear Tire:
170/60 ZR 17
Front Wheel Size:
3.50 x 17
Rear Wheel Size:
4.50 x 17
Bolt Pattern:
4 x 100mm
🛡️ Safety Features
Ratings
Safety Ratings:
No formal crash test ratings typically available for motorcycles of this era in the same way as cars. Focus on active safety features.
Active Features
ABS:
BMW Integral ABS II (optional on RS, standard on later LT models)
Braking System Front:
Dual 330 mm disc brakes, twin piston calipers
Braking System Rear:
Single 280 mm disc brake, twin piston caliper
Passive Features
Lighting:
Halogen headlight (dual on LT), LED taillight (on later models)
💡 Technology Features
Infotainment
Infotainment Features:
Limited by era. Typically featured analog gauges, basic trip computer functions. Later LT models offered integrated radio/cassette players and heated grips.
Driver Assistance
Driver Assistance Systems:
Integral ABS II (Antilock Braking System)
Connectivity
Connectivity Features:
N/A by modern standards. Designed for mechanical and electronic system diagnostics.
Electronics
Engine Management:
Bosch Motronic M2.2 or M2.4 ECU controlling fuel injection and ignition timing.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 10,000 km (6,000 miles) or annually, whichever comes first.
Filter Replacement Interval:
Replace oil filter with every oil change.
Valve Clearance Check Interval:
Every 20,000 km (12,000 miles)
Brake Fluid Change Interval:
Every 2 years (regardless of mileage)
Coolant Change Interval:
Every 2-3 years or as per manual recommendation
Fluid Specifications
Engine Oil Spec:
API SG/SH, JASO MA, SAE 20W-40 or 10W-40 motorcycle specific oil
Brake Fluid Spec:
DOT 4 brake fluid
Coolant Spec:
BMW approved antifreeze/coolant mixture (typically ethylene glycol based) at 50/50 ratio
Known Issues
Known Issues:
Potential issues include failing fuel pump relays, aging fuel lines, starter motor brushes, worn clutch slave cylinder seals, and occasional ABS sensor issues. The engine itself is robust. Electrical connectors can corrode over time.
Mann-Filter: C 26 105, K&N: BM-1190 (Cross-reference required for exact fitment)
📚 Vehicle History
Brand Heritage
Brand Heritage:
BMW Motorrad, founded in 1916, has a long history of engineering excellence, particularly in boxer-twin engines and later in pioneering shaft drive and electronic fuel injection in motorcycles.
Model Evolution
Model Evolution:
The K1100 series replaced the K100 in 1990, introducing a four-valve per cylinder head for increased power and torque, and an updated braking system. The LT (Luxus Tourer) variant focused on comfort and touring, featuring a large fairing, windscreen, and luggage, while the RS (Rennsport) variant was a more sporty tourer.
Production
Production Years:
1990-1999 (K1100RS ceased production earlier, around 1996/97, succeeded by K1200RS; K1100LT continued until 1999, succeeded by K1200LT).
Manufacturing Location:
Berlin, Germany
🏆 Awards & Recognition
Recognitions
Recognitions:
While specific awards are not listed, the K-series was consistently praised for its engineering, comfort, and reliability, earning a strong reputation in the sport-touring segment. The LT model was particularly lauded for its touring capabilities.
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