Segment:
Sport Touring Motorcycle
Target Audience:
Touring riders, performance-oriented motorcyclists, enthusiasts appreciating BMW engineering.
Competitors Era:
Honda VFR750F, Yamaha FJ1200, Kawasaki GTR1000, Suzuki GSX1100G.
Engine Layout:
Longitudinal inline-four, front-mounted engine configuration.
Drivetrain:
Shaft drive for low maintenance and clean operation.
Aerodynamics:
Integrated aerodynamic fairing for rider comfort and high-speed stability.
Engine Mechanical:
Complete disassembly, inspection, overhaul, and reassembly of the K100 inline-four engine.
Fuel System:
Bosch L-Jetronic fuel injection system, injectors, fuel pump, pressure regulator, throttle bodies.
Ignition System:
Electronic ignition system, coils, spark plugs, timing.
Cooling System:
Liquid cooling system, radiator, water pump, thermostat, coolant hoses, fan.
Transmission Drivetrain:
5-speed manual transmission, clutch assembly, final drive, driveshaft, universal joints.
Brake System:
Front and rear disc brakes, hydraulic system, brake calipers, master cylinder, ABS (if equipped).
Suspension System:
Front telescopic forks (potentially with electronic adjustment on later models), rear monoshock suspension, swingarm, linkage.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting system, instrumentation, fuse box.
Chassis Frame:
Steel trellis frame, fairing removal and installation, body panels, seat.
Wheels Tires:
Wheel bearing replacement, tire mounting and balancing, rim specifications.
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, air filter cleaning/replacement, chain adjustment (if applicable, though K-series is shaft drive).
Troubleshooting:
Diagnostic procedures for common engine, electrical, and mechanical faults.
Engine Rebuild:
Detailed steps for engine overhaul, including piston replacement, ring installation, valve work, bearing replacement.
Transmission Repair:
Clutch adjustment and replacement, transmission gear inspection and replacement.
Suspension Overhaul:
Fork seal replacement, shock absorber inspection and replacement.
Electrical Diagnostics:
Fault finding using wiring diagrams, component testing.
Brake System Service:
Brake pad replacement, caliper service, bleeding the brake system.
Depth Level:
Comprehensive Workshop Level: Covers all aspects from basic maintenance to complete engine and transmission rebuilds.
Diagnostic Coverage:
Includes detailed diagnostic charts and troubleshooting trees for identifying and resolving issues.
Specification Accuracy:
Provides precise torque specifications, clearances, fluid capacities, and wear limits.
Engine Type:
Four-stroke, transverse four-cylinder inline
Displacement:
1000cc (approx. 987cc)
Bore X Stroke:
67 mm x 70 mm
Compression Ratio:
10.2:1
Valvetrain:
SOHC, 2 valves per cylinder
Cooling System:
Liquid-cooled
Horsepower:
Approx. 90 hp @ 8,000 rpm
Torque:
Approx. 9.2 kgm (90 Nm) @ 6,500 rpm
Fuel Injection System:
Bosch L-Jetronic electronic fuel injection
Fuel Type:
Unleaded gasoline, 95 RON recommended
Oil Capacity:
Approx. 4.5 liters (with filter change)
Oil Specification:
SAE 10W-40 API SG or equivalent
Length:
Approx. 2,220 mm (87.4 in)
Width:
Approx. 850 mm (33.5 in) at handlebars
Height:
Approx. 1,275 mm (50.2 in) at seat
Dry Weight:
Approx. 239 kg (527 lbs)
Wet Weight:
Approx. 252 kg (556 lbs)
Gross Vehicle Weight Rating:
Not specified, but typically around 450-500 kg
Front Tire Size:
120/70-17
Rear Tire Size:
130/90-17 or 140/80-17 (varies by model year/market)
Wheel Type:
Cast aluminum alloy
Wheelbase:
Approx. 1,476 mm (58.1 in)
Crash Safety Rating:
N/A (Motorcycles typically not rated by NHTSA/Euro NCAP)
ABS:
Optional BMW Motorrad ABS on some models/years
Braking System:
Dual front discs, single rear disc, with hydraulic actuation.
Lighting:
Halogen headlight, tail light, turn signals.
Fairing:
Provides wind protection for the rider.
Oil Change Interval:
Every 10,000 km or 1 year, whichever comes first.
Filter Change Interval:
With every oil change.
Spark Plug Interval:
Every 20,000 km or 2 years.
Valve Clearance Check:
Every 20,000 km or 2 years.
Coolant Flush:
Every 2 years.
Engine Oil:
SAE 10W-40 API SG or higher.
Transmission Oil:
API GL-5, SAE 75W-90.
Coolant:
BMW Advanced Coolant or equivalent (50% ethylene glycol and distilled water).
Fuel Injector Seals:
Potential for degradation leading to fuel leaks or rough running.
Charging System Issues:
Voltage regulator or alternator failures can occur.
Brake Line Aging:
Rubber brake lines can degrade over time, requiring replacement.
Fuel Pump Reliability:
Early K-series fuel pumps can be a point of failure.
Suspension Wear:
Fork seals and rear shock absorbers may require service/replacement due to age.
Brand Origins:
Bayerische Motoren Werke AG, founded in 1916, known for aviation engines, later motorcycles and automobiles.
K Series Introduction:
The K-series was BMW's first major departure from its boxer-twin tradition, introduced in 1983 with the K100.
K 100 Rs Development:
The RS (Rennsport - Racing Sport) variant featured a full fairing and sportier ergonomics compared to the standard K100.
Production Period:
K 100 models produced from 1983 to 1992, with the RS variant continuing into the specified years.
