1986-1991 BMW K 75, K 75 C, K 75 S, K 75 RT Service Manual
BMW Models Covered & Key Technical Specifications
Models: BMW K 75, K 75 C, K 75 S, K 75 RT
Sub-models / Variants: K 75 Standard, K 75 C, K 75 S (Sport), K 75 RT (Touring), ABS-equipped models
Model Years: 1986–1991
Technical Data:
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Engine displacement: 740 cc
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Engine configuration: 3-cylinder, 4-stroke, liquid-cooled, longitudinally mounted
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Compression ratio: 11.0:1
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Cylinder head torque: 3.0 m·daN (initial), 4.5 ± 0.5 m·daN (final)
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Intake valve clearance (cold): 0.15–0.20 mm
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Exhaust valve clearance (cold): 0.25–0.30 mm
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Coolant capacity: 2.9 L (total), 0.41 L (expansion tank)
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Clutch disc diameter: 165 mm
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Clutch type: Dry single-disc
BMW Manual Features & Content Preview
This 96-page technical reference (Revista Moto Tecnica No. 14) delivers comprehensive data for the 1986–1991 BMW K 75 lineup, including the C, S, and RT variants alongside ABS-equipped models. Designed for professional technicians and experienced mechanics, it provides the precise specifications needed for accurate troubleshooting and component overhauls.
- Features 47 technical system diagrams and 68 exploded-view parts illustrations.
- Includes 12 torque specification tables for accurate reassembly.
The documentation offers an in-depth breakdown of the liquid-cooled 740 cc, 3-cylinder engine. You get exact parameters for the LE-Jetronic fuel injection, cooling circuit volumes, and lubrication systems. Before disconnecting high-pressure fuel lines or working on the electrical harness, always verify system pressure is relieved and standard safety protocols are followed to prevent workshop injuries.
Critical drivetrain specifications are clearly outlined. The manual details camshaft assembly tolerances, cylinder head fastening values, and dry single-disc clutch engagement thresholds. You will also find the exact final drive gear ratios required for servicing this specific longitudinal engine configuration.
For chassis and electrical work, the guide provides exact suspension specifications for both standard and Sport front forks, alongside hydraulic pressure settings vital for the optional ABS. Electrical baselines for the Bosch ignition system and alternator output are mapped out with comprehensive wiring diagrams. Routine maintenance is supported by verified valve clearance settings (0.15–0.20 mm intake, 0.25–0.30 mm exhaust), giving your shop the reliable data needed to keep these classic touring models on the road.
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