1980-1983 Yamaha XJ650G Service Manual

Complete factory repair guide for XJ650G and supplementary XJ750RH specifications. Covers engine overhaul, carburetion, chassis, and electrical systems with detailed torque specifications and diagrams.

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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.

Yamaha Models Covered & Key Technical Specifications

Models: Yamaha XJ650G, Yamaha XJ750RH
Sub-models / Variants: 4H7 (XJ650G), 5G2 (XJ750RH)
Trade Names: Seca 750
Build Years: 1980–1984
Serial Numbers: XJ650G: 4H7-000101 and up, XJ750RH: 5G2-000101 and up
Technical Data:

  • Engine type: D.O.H.C. air-cooled, gasoline, 4-cylinder
  • Engine displacement: 748 cc (XJ750RH)
  • Compression ratio: 9.2:1
  • Transmission: Constant mesh, 5-speed
  • Final drive: Shaft drive
  • Front fork oil capacity: 309 cc (10.5 oz) per leg
  • Standard idle speed: 1,050 +/- 50 r/min
  • Cylinder bore: 65.00 mm (standard size)
Technical Specifications
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Document Number / Seller:
25375 / Deborah Collins
File Size:
115.03 MB
File Type:
PDF
Language:
English
Pages:
213
Printable:
Yes
Category:
Motorbike
Last updated / verified
Jan 31, 2026

Yamaha Manual Features & Content Preview

Yamaha XJ650G and XJ750RH Technical Documentation

  • Covers 1980–1984 Yamaha XJ650G and XJ750RH motorcycles, including engine, chassis, and electronic monitoring system variants
  • Official OEM publication LIT-11616-01-94 combined with LIT-11616-02-34
  • Contains 48 detailed exploded-view illustrations and 5 complete electrical schematics for the XJ series
  • Re-download the file any time, no expiration
  • Indexed PDF search covers every chapter and appendix
  • Understanding factory workshop documentation structures the mechanical and system service data
  • This edition includes the dedicated XJ750RH supplement alongside the original XJ650G base service information

Service Scope and Contents

This 213-page Yamaha factory publication provides technical data for the XJ650G and XJ750RH models. The content is organized by system, starting with general identification and maintenance schedules, moving through detailed engine and chassis inspection parameters, and concluding with electrical system diagnostics. Technical documentation encompasses the air-cooled D.O.H.C. inline-four powerplant, the shaft-driven transmission, and the integrated computerized monitor system. Professionals and owners benefit from the structured approach to engine overhauling, carburetor synchronization, and anti-dive front fork maintenance.

Specification and Reference Data

Engine overhaul data includes standard and wear-limit dimensions for cylinders, pistons, and valve trains. Torque settings are provided for engine components like cylinder head nuts, crankcase bolts, and oil filter fasteners. Electrical specifications highlight charging system outputs, resistance values for pick-up coils, and fuse ratings. For instance, the oil pressure system relief valve setting is documented at 5.0 kg/cm² (71 psi) in the lubrication data chart. Intake valve clearance is specified at 0.11–0.15 mm, while the crankshaft main journal run-out limit is 0.040 mm. This documentation serves as an official reference for the maintenance and inspection of the 1980–1984 Yamaha XJ650G and XJ750RH motorcycle series, documenting essential technical parameters and system operation for qualified mechanics.

Manual FAQ, Purchase & Download Details

Are specific publication numbers or document references provided to distinguish the XJ650G manual edition? keyboard_arrow_down

Document references include clear publication cues on the cover, such as the LIT-11616-01-94 identifier.

Does the manual show exploded views or detailed illustrations of the brake system components? keyboard_arrow_down

Manual contains exploded view diagrams for the front brake assembly, including specific illustrations of the calipers, pistons, and seals. These visuals reference the component breakdown to assist in understanding the assembly structure.

Can I find technical specifications for the anti-dive suspension or electrical system configuration in this manual? keyboard_arrow_down

Manual includes detailed specification tables for the anti-dive suspension system, referencing oil flow dynamics and adjustment settings. It also covers component-specific reference data for the electrical systems and related mechanical assemblies.

Is there a comprehensive table provided for fluid capacities and lubricant types? keyboard_arrow_down

Manual lists fluid capacities and recommended lubricant types within the maintenance and service data tables.

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