Segment:
Sport-touring motorcycle segment, known for its unique inline-three-cylinder engine and shaft drive.
Competitors:
Competed against Japanese inline-four and V-twin motorcycles from Honda, Yamaha, Kawasaki, and Suzuki in the sport-touring and middleweight classes.
Engine Layout:
Revolutionary transverse-mounted 90-degree inline-three-cylinder engine.
Drivetrain:
Shaft drive, eliminating chain maintenance.
Handling:
Monolever rear suspension and robust front forks provided stable and predictable handling.
Touring Capabilities:
Models like the K75T featured factory fairings, comfortable seating, and luggage options for long-distance riding.
Engine:
Complete engine overhaul, fuel injection, ignition, exhaust, cooling system, lubrication
Transmission:
Gearbox maintenance, clutch service, shaft drive maintenance
Chassis:
Frame inspection and repair, suspension (front forks, rear monoshock), steering
Brakes:
Brake system maintenance, bleeding, pad and disc replacement, ABS (if equipped)
Electrical:
Wiring diagrams, starter system, charging system, lighting, instrumentation, diagnostic codes
Bodywork:
Fairings, body panels, seat, fuel tank, fenders, trim
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain/drive maintenance, tire pressure checks
Troubleshooting:
Diagnostic charts, common problem identification and solutions
Repair:
Component-level repair, assembly and disassembly instructions
Special Tools:
Identification and usage of BMW-specific tools
Depth:
Comprehensive, from basic servicing to full engine rebuilds and electrical system diagnostics
File Type:
PDF (Portable Document Format)
Searchability:
Likely includes searchable text for quick information retrieval
Printability:
Designed for printing key sections or the entire manual
Quality:
High-resolution scans or original digital files, ensuring clarity of text and diagrams
Type:
Not Applicable (Downloadable)
Type:
Not Applicable (Digital Format)
Engine Type:
Four-stroke, inline three-cylinder
Displacement:
740 cc (740cc)
Bore X Stroke:
67 mm x 70 mm
Compression Ratio:
8.2:1 or 9.8:1 (depending on specific K75 variant and year)
Valvetrain:
SOHC, 2 valves per cylinder
Horsepower:
Approx. 70-75 hp @ 8500 rpm (varies slightly by model)
Torque:
Approx. 68 Nm (50 lb-ft) @ 6500 rpm
Fuel Delivery:
Bosch LE-Jetronic (later Motronic) electronic fuel injection
Fuel Type:
Unleaded gasoline (95 RON recommended)
Coolant Capacity:
Approx. 2.5 liters
Oil Capacity:
Approx. 2.5 liters (with filter change)
Recommended Oil:
SAE 20W-50 or 10W-40 synthetic or semi-synthetic motorcycle oil meeting API SG or higher specification.
Type:
5-speed constant mesh gearbox
Clutch:
Hydraulically operated, multi-plate wet clutch
Final Drive:
Shaft drive via Monolever rear swingarm
Transmission Oil Type:
Gear oil SAE 90 (GL-4 or GL-5)
Transmission Oil Capacity:
Approx. 0.9 liters
Length:
Varies by model (e.g., K75S approx. 2185 mm)
Width:
Varies by model (e.g., K75S approx. 750 mm)
Height:
Varies by model (e.g., K75S approx. 1200 mm)
Dry Weight:
Approx. 195-210 kg (depending on model and equipment)
Wet Weight:
Approx. 215-230 kg (depending on model and equipment)
Gross Vehicle Weight Rating:
Not explicitly stated, but typically around 400-450 kg for safe operation with rider and luggage.
Crash Test Data:
Motorcycles from this era are not typically subjected to standardized crash testing like automobiles.
Braking System:
Front: Single or dual discs (depending on model). Rear: Single disc.
ABS:
Optional ABS (Anti-lock Braking System) available on some models.
Lighting:
Halogen headlight, taillight, turn signals.
Frame Construction:
Steel tubular frame designed for rigidity and stability.
Ergonomics:
Designed for rider comfort and control, with variations between K75C, K75S, and K75T models.
Features:
Basic instrumentation: speedometer, tachometer, odometer, trip meter, fuel gauge, engine warning light. Some models may have additional indicator lights for oil pressure, charging system, etc.
ABS:
Optional ABS system, a significant safety feature for its time.
Features:
No modern electronic connectivity features; focused on mechanical and electrical systems.
Oil Change Interval:
Typically every 10,000 km (6,000 miles) or annually, whichever comes first.
Major Service Interval:
Recommended major services (e.g., valve clearance checks, throttle body synchronization) at 20,000 km (12,000 miles) or as specified in the manual.
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Engine Oil Type:
Refer to engine_specs for recommended oil viscosity and specifications (e.g., SAE 20W-50).
Coolant Type:
Ethylene glycol-based antifreeze coolant with corrosion inhibitors, typically a 50/50 mix with distilled water.
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Transmission Oil Type:
Refer to transmission specs for SAE 90 gear oil.
Common Problems:
Potential issues include aging rubber components (hoses, seals), ABS sensor failures on equipped models, and occasional fuel injection system adjustments. Electrical connectors can be susceptible to corrosion over time.
Maintenance Tips:
Regular cleaning of the fuel injectors, checking the Monolever boot for cracks, and ensuring proper charging system voltage are beneficial.
Bmw Motorrad:
BMW Motorrad, a division of BMW AG, has a long history of producing innovative and durable motorcycles, often incorporating advanced engineering and rider-focused features.
K Series Introduction:
The K-series, introduced in the early 1980s with the K100, represented a significant technological leap for BMW, featuring a transverse inline-four engine and shaft drive. The K75 was developed as a smaller, lighter, and more agile variant.
K75 Variants:
The K75 was offered in several distinct styles: the K75 (standard), K75C (Classic, with a more retro look), K75S (sportier, with a smaller fairing and firmer suspension), and K75T (Touring, with a larger fairing and luggage options).
Manufacturing Location:
Berlin, Germany (BMW Motorrad plant)
Production Run:
The K75 series was produced from 1985 through 1995, with continuous updates and refinements during its lifecycle.
Industry Reputation:
The K75 series is recognized for its smooth engine, robust build quality, reliable shaft drive, and comfortable touring capabilities, making it a respected machine in the BMW motorcycle lineage.
Rider Reviews:
Generally praised by owners for its durability and pleasant riding experience, especially for touring and commuting.
