Segment:
Luxury Touring and Sport Touring Motorcycle Segment
Target Audience:
BMW K1100LT/RS owners, independent repair shops, motorcycle enthusiasts.
Positioning:
The K1100 series represented BMW's premium inline-four cylinder motorcycle offering, known for its comfort, performance, and advanced technology for its era.
Vehicle Strengths:
Smooth inline-four engine, shaft drive, comfortable ergonomics (especially LT), ABS integration, robust build quality.
Manual Value Proposition:
Provides access to the same detailed repair and maintenance information as used by official BMW dealerships, enabling comprehensive self-service.
Engine Mechanical:
Complete overhaul, including cylinder head, pistons, crankshaft, timing system (chain, tensioners, guides).
Fuel Injection System:
Bosch Motronic system diagnostics, injector testing, fuel pump pressure, throttle body calibration.
Ignition System:
Spark plug specifications, coil testing, timing adjustments.
Cooling System:
Radiator, fan, thermostat, coolant specifications and bleeding procedures.
Clutch:
Hydraulic clutch system maintenance, fluid replacement, clutch plate inspection and replacement.
Transmission:
Gearbox disassembly, inspection, and reassembly, gear oil specifications and change intervals.
Final Drive:
Shaft drive system maintenance, universal joint lubrication, final drive gear oil specifications.
Front Suspension:
Fork service, oil change, seal replacement, spring specifications.
Rear Suspension:
Monoshock absorber service, linkage maintenance, preload adjustments.
Braking System:
ABS II system diagnostics, brake fluid type and bleeding procedures, caliper and master cylinder overhaul.
Wheel Bearings:
Front and rear wheel bearing inspection and replacement.
Electrical System Diagnostics:
Battery testing, charging system (alternator/regulator), starter motor, lighting, instrumentation.
Lighting System:
Headlight aiming, bulb replacement, indicator and tail light circuits.
Instrumentation And Controls:
Dashboard operation, switchgear functionality.
Body Panels:
Fairing removal and installation, seat maintenance.
Fastener Specifications:
Torque specifications for critical components.
Engine Overhaul:
Step-by-step rebuild instructions with detailed diagrams for internal engine components.
Fuel System Calibration:
Idle speed adjustment, CO mixture settings (where applicable).
Suspension Tuning:
Adjustment procedures for damping and preload.
Brake Bleeding:
Complete instructions for ABS and non-ABS systems.
Diagnostic Fault Codes:
List of error codes and troubleshooting steps for Motronic system.
Electrical Troubleshooting:
Guided diagnosis of common electrical faults using wiring diagrams.
Periodic Maintenance:
Oil changes, filter replacements, spark plug service, lubrication points.
Component Replacement:
Detailed instructions for replacing wear items and major components.
Wiring Diagram Interpretation:
Comprehensive color-coded wiring diagrams for easy understanding.
Depth:
Comprehensive Professional Workshop Level
Detail Level:
Detailed step-by-step instructions with exploded views and diagrams for all major repairs and maintenance.
Diagnostic Capability:
Advanced diagnostic procedures for engine management and ABS systems.
Type:
Inline-four cylinder, four-stroke
Displacement:
1093 cc (1.1 L)
Bore X Stroke:
73 mm x 63.8 mm
Compression Ratio:
10.0:1
Valvetrain:
DOHC, 2 valves per cylinder
Horsepower Approx:
100 hp @ 7500 rpm
Torque Approx:
101 Nm (74 lb-ft) @ 5500 rpm
Induction:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline (95 RON recommended)
Ignition System:
Digital Electronic Ignition (BMW)
Oil Capacity:
Approx. 4.5 liters (4.8 US qt)
Oil Specification:
SAE 15W-40 or 10W-40 API SG or higher (check manual for specific ambient temperature recommendations)
Clutch:
Hydraulically actuated wet multi-plate clutch
Gear Ratios:
Specific ratios detailed within the manual (e.g., 1st: 3.46, 2nd: 2.44, 3rd: 1.78, 4th: 1.40, 5th: 1.12)
Transmission Oil Type:
Hypoid gear oil, API GL-5, SAE 80W/90 (check manual for exact specifications)
Transmission Oil Capacity:
Approx. 0.25 liters (0.26 US qt)
Oil Change Interval:
Every 10,000 km (6,000 miles) or annually, whichever comes first.
Filter Replacement Interval:
With every oil change.
Spark Plug Replacement Interval:
Every 20,000 km (12,000 miles) or as per manual recommendation.
Valve Clearance Check:
Every 20,000 km (12,000 miles).
Brake Fluid Change:
Every 2 years.
Coolant Change:
Every 2-3 years or as specified.
Brake Fluid Type:
DOT 4 hydraulic brake fluid (ensure compatibility with ABS systems).
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors (BMW recommends specific coolant, consult manual).
Common Wear Items:
Fuel pump, voltage regulator, brake line degradation, rear shock absorber (depending on mileage and usage).
Electrical Gremlins:
Can sometimes occur due to aging wiring or corrosion at connectors, detailed troubleshooting in manual.
ABS System Faults:
Potential issues with ABS sensors or control unit, diagnostics covered in manual.
Bmw Motorrad Legacy:
BMW Motorrad has a long history of engineering excellence, safety, and durability, particularly in their boxer and inline-four engine configurations.
K Series Development:
The K1100 series evolved from the earlier K100 and K1100 series, featuring the transverse-mounted inline-four engine, shaft drive, and a focus on aerodynamic touring capabilities. The 'LT' denotes a fully faired luxury tourer, while the 'RS' signifies a sport-touring variant.
Production Period:
K1100 series produced from 1990 onwards, with the 1999-2000 years representing later production models within this generation.
