1986-1991 BMW K 75 / K 75 C / K 75 S / K 75 RT Service Manual
Complete service documentation for BMW K 75 series motorcycles. Covers engine specifications, fuel injection diagnostics, transmission service, ABS system maintenance, and chassis repair procedures for all K 75 variants.
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Sample pages from the 1986-1991 BMW K 75 / K 75 C / K 75 S / K 75 RT Service Manual manual
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Models Covered & Key Technical Specifications
BMW K 75, K 75 C, K 75 S, K 75 RT — 1986–1991 Technical Integrated Handbook | K 75 Series Repository.
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Documented Assembly Gap: 57 x 70 mm bore × stroke is configured at the piston crown structure design Sequences.
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Measured Load Capacity: For optimal performance, 740 cm³ cylinder volume limits the engine displacement baseline displacement Baseline.
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Technical Thermal Envelope: The cooling circuit is set to 2.9 L total capacity with 0.41 L expansion tank standards Requirements.
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Universal Size Parameters: 165 mm clutch disc diameter produces the dry single-disc engagement friction Threshold.
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Core Fastening Values: The cylinder head requires 8 M10 bolts at 3.0 m·daN initial torque plus 4.5 m·daN final torque Mapping.
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Rated Running Clearance: Valve clearance is measured at 0.15–0.20 mm (intake) and 0.25–0.30 mm (exhaust) cold setting Configuration.
Professional Workshop Service Manual & Technical Specifications
Full-Coverage Reference Manual: BMW K 75 C, K 75 S, K 75 RT, K 75 (1986-1991) Logic-Archive
Assembly-Group: BMW K 75 models (1986-1991) // Unit-Designations: Three-cylinder inline / Liquid-cooled Engine Logic // Service-Level: Complete diagnostic and maintenance documentation.
| Document Section | Coverage Details | Reference Status |
|---|---|---|
| Engine Systems | Displacement, combustion chambers, valve specifications | Comprehensive technical data included |
| Fuel Injection | Electronic Bosch LE-Jetronic system operation | Complete system specifications documented |
| Transmission | Five-speed gearbox, gear ratios, Monolever rear suspension | Full gear table and adjustment parameters provided |
Providing a structural breakdown of the complete BMW K 75 series repair and maintenance documentation, this manual encompasses the engine block, transmission intermediary systems, cooling circuit performance, and complete electrical system architecture. The document covers fuel injection protocols, ignition timing specifications, and valve clearance reference data alongside detailed chapter overviews addressing engine thermal management, power delivery characteristics, and component-specific service intervals.
Alignment specifications are included for the three-cylinder architecture (1986-1991 model variants), with technical coverage spanning the liquid cooling system, air filtration specifications, and fuel supply pressure documentation. Reference data is included for brake system performance, clutch engagement parameters, and front fork damping characteristics across model variations. Wiring diagrams are provided for the electronic fuel injection control module, alternator charging circuit, and starter motor installation geometry.
Diagnostic procedures are covered for both mechanical malfunction identification and electronic control system fault-finding, with tabulated specification references for cylinder bore measurements, piston clearance tolerances, and bearing journal dimensions. The manual documents torque specifications for the connecting rod fasteners to ensure proper structural integrity.
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