1984-1986 Honda CB700SC Nighthawk Service & Repair Manual

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Honda Models Covered & Key Technical Specifications

Models: Honda CB700SC Nighthawk

Model Years: 1984–1986

Engine: Air-cooled 4-stroke DOHC, vertical in-line four

Displacement: 696 cm³

Compression ratio: 9.3:1

Maximum horsepower: 80 PS at 10,000 rpm

Maximum torque: 6.25 kg-m (45.20 ft-lb) at 8,000 rpm

Idle speed: 1,000 ± 100 rpm

Transmission: 5-speed + O.D. (6 speed), wet multi-plate clutch

Ignition timing: 10° BTDC at 1,550 ± 200 rpm (initial), 32° BTDC at 3,150 ± 250 rpm (full advance)

Tire pressures (Cold): Front 225 kPa (32 psi), Rear 225 kPa (32 psi) (at 90 kg load)

Suspension air pressure: 0–6 psi

Front fork oil capacity: 423 cc (Right), 429 cc (Left)

Technical Specifications
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Document Number / Seller:
29899 / Cynthia Collins
File Size:
26.78 MB
File Type:
PDF
Language:
English
Pages:
300+
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Jun 12, 2026

Honda Manual Features & Content Preview

  • Covers 1984–1986 Honda CB700SC Nighthawk motorcycles equipped with the 696 cc DOHC in-line four engine
  • Official Honda Motor Co., Ltd. publication 31536, documenting the exact factory specifications for the original release
  • Contains 24 distinct chapters detailing every core component, from fuel delivery systems down to cylinder head tear-downs and lubrication circuitry for any necessary engine repair
  • Provides precise, factory-specified valve timing and carburetion tuning parameters directly from the manufacturer

Manual Content Breakdown

This 300-page official service manual provides a structured, highly technical reference for the complete motorcycle. It spans everything from general model identification to complex chassis diagnostics. You will find required special tool listings alongside service rules specifically written for the mid-eighties Nighthawk series. Subsequent sections detail the internal engine components. They feature comprehensive exploded-view diagrams of the DOHC assembly. You get a clear look at the final drive, frame, and hydraulic anti-dive fork. Wiring schematics and a robust troubleshooting index assist technicians in tracing faults across the powertrain. Ultimately, it serves as the definitive reference for standard maintenance and complex chassis repair.

Specification Highlights

Engine cooling and lubrication parameters are thoroughly documented. For instance, oil pressure is rated at 630 kPa at 6,000 rpm at 80°C. The documentation specifies a hydraulic valve tappet compression stroke of 0–0.2 mm, while cylinder compression should hit 12 kg/cm². Working on motorcycle powertrain and braking systems requires specific mechanical expertise. Always rely on the complete original manufacturer documentation to ensure safe assembly and testing. This technical overview is intended to help you verify component requirements before starting any hands-on work.

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.

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