1979-1982 Honda CB650 Shop Manual
Shop manual for the Honda CB650 Series with detailed procedures, diagrams, and technical specifications. Ref: 07703-0010100, 07716-0020202
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Sample pages from the 1979-1982 Honda CB650 Shop Manual manual
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Honda Models Covered & Key Technical Specifications
Models: Honda CB650
Build Years: 1979–1982
Technical Data:
- Engine type: Air-cooled 4-stroke, vertical in-line four
- Displacement: 627 cc
- Bore and stroke: 59.8 x 55.8 mm
- Compression ratio: 9.0:1
- Transmission: 5-speed constant-mesh
- Final drive: Chain (RK50NK or DID 50HDK, 102 links)
- Fuel system: Four PD50A carburetors
- Ignition system: Transistorized with electronic ignition timing
- Frame type: Double cradle
- Front suspension: Telescopic fork, 142 mm travel
- Rear suspension: Swing arm, 77 mm travel
- Brakes: Front disc brake, rear internal expanding shoe
- Engine oil capacity: 3.5 liters (3.7 US qt) at engine assembly, 3.0 liters (3.2 US qt) at change
- Spark plug gap: 0.6–0.7 mm (0.024–0.028 in)
- Compression pressure: 12 ± 2 kg/cm² (170 ± 28 psi)
Honda Manual Features & Content Preview
Honda CB650 1979–1982 Official Shop Manual
- This official Honda CB650 1979–1982 shop manual provides the factory specifications and inspection parameters for the air-cooled in-line four-cylinder platform.
- Original OEM publication, date of issue December 1978, covering the base model CB650 architecture.
- Contains 47 exploded-view diagrams, extensive electrical wiring schematics, and detailed torque-specification tables for engine and chassis assembly.
- Accessible from your device as soon as the order is placed.
- OCR text layer lets you jump to a torque spec by keyword.
- File resolution preserves exploded-view detail across the 100 pages of technical documentation.
- This 1978 first edition serves as the foundational reference for the 1979–1982 CB650, documenting engine, fuel system, and chassis components.
Component Documentation
The 1979–1982 Honda CB650 manual provides comprehensive coverage of the air-cooled, four-stroke, vertical in-line four-cylinder engine. Technical sections detail the fuel system, including carburetor removal, disassembly, and synchronization for the four-carburetor bank. Cylinder head, piston, and valve train chapters define clearances, assembly, and testing. Chassis chapters offer maintenance guidance for the double cradle frame, telescopic fork, and swing arm rear suspension components. Electrical documentation integrates the ignition timing, charging system, and starter motor circuits with full-page wiring diagrams. Troubleshooting guides for the engine, fuel, and electrical systems facilitate identification of mechanical issues.
Specification Previews
Engine compression pressure is standard at 12 ± 2 kg/cm² for the 1979–1982 Honda CB650. Intake valve clearance is specified at 0.05 mm while exhaust is 0.08 mm in the cylinder head specification table. Crankcase bolt torque is set at 2.2–2.6 kg-m for engine structural integrity. The 3.0-liter oil capacity is maintained through the wet sump system. The 1979–1982 Honda CB650 requires specific understanding factory workshop documentation for ongoing service. Refer to the table of contents for component-specific service limits, including rotor-to-pump body clearances and chain-free play limits of 15–25 mm. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This official 100-page Honda OEM publication covers the 1979–1982 Honda CB650, documenting engine, chassis, electrical, and fuel-system specifications for the internal combustion powertrain and frame assembly.
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