🏷️ Basic Information

Make:

BMW

Model:

K1100LT / K1100RS

Model Designation:

K1100LT (Touring), K1100RS (Sport Touring)

Product Name:

BMW K1100LT K1100RS Factory Workshop Manual

Engine Code:

Not specified in provided text, but typically K1100

👋 Introduction

Market Position:

The K1100LT and K1100RS were premium, high-performance sport-touring motorcycles in their era, targeting riders who desired comfort, power, and technological sophistication for long-distance travel and spirited riding.

Competitors:

Competed against other large-displacement sport-touring motorcycles from manufacturers like Honda (ST series), Yamaha (FJ series), and Kawasaki (GTR series).

Key Features:

Four-cylinder, longitudinal engine; shaft drive; advanced (for its time) electronic fuel injection; ABS (optional on some models); comfortable ergonomics for touring (LT); sportier fairing and suspension for the RS model.

📋 Manual Details

Systems Covered:

General Instructions, Maintenance, Engine Electrics, Fuel Preparation & Control, Fuel Tank & Lines, Radiator, Exhaust System, Clutch, Gearbox, Front Fork, Steering, Rear Wheel Drive, Brakes, Wheels & Tyres, Frame, Equipment, General Electric Equipment, Instruments, Lights

Page Count:

Not specified in provided text. Factory workshop manuals are typically extensive, often exceeding 500 pages.

Manual Type:

Factory Workshop Manual / Service Manual

Language:

Likely English, as per product description, but official BMW manuals can be multilingual.

Format:

Physical printed manual (implied by sales business focus). PDF versions may also exist.

📖 Manual Coverage

Engine Systems:

Engine design, lubrication, oil system components (filter, bypass valve, pressure relief valve), cylinder bore/stroke, displacement, compression ratio, engine speed limits, idle speed, compression test procedures.

Fuel System:

Fuel preparation and control, fuel tank and lines, electronic fuel injection system diagnostics and adjustments.

Cooling System:

Radiator system maintenance and repair.

Exhaust System:

Exhaust system inspection and repair.

Drivetrain:

Clutch operation and maintenance, gearbox inspection and repair, rear wheel drive system (shaft drive) maintenance and overhaul.

Suspension Steering:

Front fork servicing and repair, steering system maintenance and adjustment.

Brakes:

Brake system inspection, repair, and fluid service.

Wheels Tires:

Wheel and tire maintenance, including inspection and replacement procedures.

Frame:

Frame inspection and potential repair considerations.

Electrical Systems:

Engine electrics, general electric equipment, instruments, lights, wiring diagrams, component testing.

Equipment:

Coverage of on-board equipment and accessories.

Maintenance Procedures:

Regular scheduled maintenance, fluid changes, filter replacements, spark plug service, brake bleeding, clutch adjustments.

Troubleshooting:

Diagnostic procedures for common issues across all major systems, fault finding guides.

Repair Procedures:

Detailed step-by-step instructions for component removal, repair, and reinstallation for engine, transmission, suspension, brakes, electrical systems, etc.

Technical Adjustments:

Engine idle speed adjustment, fuel injection system calibration (where applicable), valve clearance checks/adjustments (if not shim-less).

Special Tools:

Identification and usage instructions for any specialized tools required for specific procedures.

Depth:

Comprehensive; covers everything from basic scheduled maintenance to in-depth engine and gearbox overhauls, including electrical system diagnostics and wiring diagrams.

📊 Manual Specifications

File Format:

Not applicable for printed manuals, but if a digital version exists, it would typically be PDF.

Print Quality:

Typically high-quality printing with clear diagrams and text, as expected from OEM or reputable aftermarket manual publishers.

Binding Type:

Likely a robust binding suitable for workshop use, such as spiral-bound or saddle-stitched pages within a sturdy cover.

Paper Type:

Durable, possibly coated paper to withstand workshop environments and grease. Diagrams and schematics would be printed on high-clarity paper.

⚙️ Engine Specifications

Engine Type:

Inline four-cylinder, four-stroke

Engine Orientation:

Longitudinal

Valve Train:

Double Overhead Camshafts (DOHC)

Cooling System:

Liquid Cooling

Engine Number Location:

Lower rear right of engine block

Bore:

70.5 mm (2.77 inches)

Stroke:

70.0 mm (2.75 inches)

Number Of Cylinders:

4

Effective Displacement:

1093 cc

Compression Ratio:

11.0 : 1

Power Output:

74 kW (100 hp) at 7500 min⁻¹

Max Torque:

107 Nm at 5500 min⁻¹

Permissible Max Engine Speed:

8900 min⁻¹

Permissible Continuous Engine Speed:

8500 min⁻¹

Idle Speed:

950 ± 50 min⁻¹

Engine Rotation Direction:

Anti-clockwise (when looking at the ignition system)

Fuel Injection:

Electronic Fuel Injection (EFI)

Lubrication System:

Pressurised oil circuit

Oil Filter Type:

Full-flow type

Oil Filter Bypass Valve Opening Difference:

1.5 bar (21.3 psi)

Oil Pressure Warning Light Activation:

Below 0.2 – 0.5 bar (2.8 – 7.1 psi)

Oil Pressure Relief Valve Opening Pressure:

5.4 bar (76.8 psi)

Oil Capacity Without Filter Change:

3.50 liters (6.2 Imp. pints)

Oil Capacity With Filter Change:

3.75 liters (6.6 Imp. pints)

Permissible Oil Consumption:

0.15 l/100km (1,875 miles/gal)

Oil Pump Type:

Gear-type

🔧 Transmission

Transmission Type:

5-speed manual gearbox with shaft drive

Optional Gearbox:

None specified; standard configuration was a 5-speed manual.

Clutch Type:

Single dry plate clutch (typical for K-series)

Final Drive:

Shaft drive

📐 Dimensions

Dimensions:

Not specified in provided text. Specific dimensions (length, width, height) would be detailed in a full manual.

Dry Weight:

Not specified in provided text. The K1100LT was known to be a substantial motorcycle, likely over 250kg dry.

🛡️ Safety Features

Safety Features:

The K1100LT and RS models often featured BMW's Integral ABS (Anti-lock Braking System) as an optional or standard feature depending on market and year, offering a significant safety advantage.

💡 Technology Features

Infotainment Features:

Basic instrumentation for the era. Later models may have more advanced features, but the core technology is focused on reliable motorcycle operation. The manual would cover instrument cluster diagnostics and any integrated accessory controls.

Driver Assistance Features:

Integral ABS was a significant driver assistance feature for its time, enhancing braking safety. The manual details its operation, maintenance, and troubleshooting.

Connectivity Features:

No modern smartphone connectivity features expected. Connectivity would refer to the integrated electrical systems, lighting, and diagnostic interfaces for the period.

🔧 Maintenance

Service Intervals:

Typical intervals would include oil changes every 5,000-10,000 km (3,000-6,000 miles), valve checks around 20,000-30,000 km (12,000-18,000 miles), and more comprehensive checks at major mileage milestones. Specific intervals for all components are detailed within the manual.

Engine Oil Type:

Refer to manual for exact BMW specification (e.g., BMW Motor Oil or equivalent SAE 20W-50 or 15W-50 depending on climate and specific model year recommendations).

Coolant Type:

Ethylene glycol based coolant, typically a 50/50 mix with distilled water. BMW specifies its own coolant (e.g., BMW Advanced Antifreeze).

Brake Fluid Type:

DOT 4 (or DOT 4 Plus) brake fluid is commonly recommended for BMW motorcycles of this era.

Gearbox Oil Type:

Refer to manual for specific gearbox oil grade, often a high-quality gear oil or motorcycle-specific transmission fluid.

Final Drive Oil Type:

Typically a hypoid gear oil (e.g., SAE 90 or 85W-90) for the shaft drive final drive.

Common Issues:

Potential issues can include aging electrical connectors (corrosion), fuel injector issues (clogging), water pump seal leaks, and clutch slave cylinder leaks. The manual provides diagnostic and repair procedures for these and other common wear items.

📚 Vehicle History

Brand Heritage:

BMW Motorrad has a long history of producing technologically advanced and durable motorcycles, often characterized by inline-four engines, shaft drive, and a focus on rider comfort and safety.

Model Evolution:

The K1100 series evolved from the earlier K100 series, featuring a larger displacement engine for increased performance and refined ergonomics for both sport-touring (RS) and full touring (LT) configurations.

Production Years:

The K1100 models were produced from approximately 1990 to 1999.

🏆 Awards & Recognition

Recognitions:

While specific awards are not listed for the manual itself, the K1100LT and RS models were generally well-received for their engineering, comfort, and performance in the sport-touring segment, earning respect within the motorcycling press and among owners.