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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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

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
Build Years: 1986–1991
Technical Data:

  • Engine displacement: 740 cc
  • Engine configuration: 3-cylinder, 4-stroke, liquid-cooled, longitudinally mounted
  • Compression ratio: 11.0:1
  • Cylinder head torque: 3.0 m·daN (initial), 4.5 ± 0.5 m·daN (final)
  • Intake valve clearance (cold): 0.15–0.20 mm
  • Exhaust valve clearance (cold): 0.25–0.30 mm
  • Coolant capacity: 2.9 L (total), 0.41 L (expansion tank)
  • Clutch disc diameter: 165 mm
  • Clutch type: Dry single-disc
Technical Specifications
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Document Number / Seller:
23721 / Donald Hernandez
File Size:
30.44 MB
File Type:
PDF
Language:
English, Spanish
Pages:
96
Printable:
Yes
Category:
Motorbike
Last updated / verified
Dec 27, 2025

BMW Manual Features & Content Preview

Technical Scope for the 1986–1991 BMW K 75 Series

  • Covers 1986–1991 BMW K 75, K 75 C, K 75 S, and K 75 RT, including ABS-equipped variants
  • Original OEM publication Revista Moto Tecnica No. 14
  • Contains 47 technical system diagrams, 68 exploded-view parts illustrations, and 12 torque specification tables
  • Delivered as a direct download the moment payment clears
  • Indexed PDF search covers every chapter and appendix
  • This official edition documents the transition from early K 75 models to the later RT touring variants, providing the technical basis for the 1986–1991 production run

Mechanical and Technical Documentation

The 1986–1991 BMW K 75 service manual provides a detailed technical analysis of the liquid-cooled 740 cc, 3-cylinder engine. Technical prose segments detail the lubrication circuits, cooling system specifications, and LE-Jetronic fuel injection system parameters. The documentation presents extensive data on cylinder head fastening values, camshaft assembly, and cooling circuit volume requirements. Further sections focus on the transmission, including the dry single-disc clutch engagement thresholds and the final drive gear ratios, which are essential for maintaining the longitudinal engine layout.

Chassis and Electrical Specifications

Technical data includes suspension specifications for both the standard and Sport front fork assemblies, along with hydraulic pressure settings for the optional ABS brake system. Electrical reference values for the Bosch ignition system and alternator output are documented, supported by comprehensive wiring diagrams for all K 75 models. The manual lists valve clearance settings of 0.15–0.20 mm for intake and 0.25–0.30 mm for exhaust. what an OEM service publication covers in depth through its technical chapters, providing the necessary specifications for identifying components throughout the powertrain and chassis. This 96-page factory publication provides essential data for the 1986–1991 BMW K 75 series, detailing mechanical, fuel, electrical, and cycle-part specifications for the full range of variants.

Manual FAQ, Purchase & Download Details

Which formats and languages are available for this service manual? keyboard_arrow_down

Document is available as an instant-access PDF download in both English and Spanish.

Are specific tightening specification tables or tolerance charts included in the manual? keyboard_arrow_down

Manual includes technical specification tables that list torque ranges and clearance references for the engine and chassis components. These tables provide essential technical data for the listed BMW K 75 series models.

Is there coverage for the electrical system including ignition and charging components? keyboard_arrow_down

Technical sections contain wiring diagrams, connector pinout references, and descriptive information regarding the ignition and charging systems.

What content is available regarding the top-end engine and transmission assemblies? keyboard_arrow_down

Engine and transmission chapters feature exploded views, technical component descriptions, and overview material for the internal assemblies. These sections provide a comprehensive look at the powertrain configuration.

Does the document provide publication details or revision information for the 1986-1991 model years? keyboard_arrow_down

Front matter of the PDF indicates the specific publication details, including the edition and editorial metadata for the K 75 series. This document covers the K 75, K 75 C, K 75 S, and K 75 RT variants as part of a technical study. It serves as a comprehensive reference repository for the specified production years.

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