Suzuki GN400 Supplementary Service Manual

1980–1982 Suzuki GN400 Service Documentation: Diagrams & Reference Specs

• Covers the 1980–1982 Suzuki GN400, documenting technical specifications and factory procedures distinct from the base SP400 model
• Official Suzuki Motor Co., Ltd. publication P/N SR-6600 (E-01, SUPPL. 2), published September 1980
• Contains 47 pages featuring exploded-view diagrams, electrical schematics, and tolerance charts
• Indexed PDF allows quick searches across every chapter to locate specific components
• Print individual sections directly for shop-floor use without risking damage to a physical book
• Instant download directly to your account within seconds of checkout
• Provides the essential reference data needed before starting your next repair project

Component and System Technical Data

This original 47-page factory supplement delivers the core engine, chassis, electrical, and carburetor specifications required for the SR-6600 model build. It lists crucial technical data for internal engine components, including valve clearance settings and piston-to-cylinder tolerances. For instance, the cylinder head specification table dictates an intake valve clearance of 0.03–0.08 mm. Standard engine oil capacity is documented at 1600 ml. The manual also details the construction of the Mikuni BS36SS carburetor, outlining jet needle and pilot screw reference values for proper fuel mixture maintenance. Always verify your tools are calibrated and observe standard workshop safety protocols when handling fuel systems or torquing internal engine parts.

Electrical and Chassis Specifications

Navigating the electrical system is straightforward using the included wiring diagrams for international market variants like the E-01, E-02, and E-28. The documentation specifies the magneto pick-up coil resistance for the pulser coils at 40–54 ohms. Suspension setup data is equally precise. The front fork oil level is recorded at 170 mm for the E-02 model and 207 mm for other markets. Additionally, this resource provides exact tightening torque values for chassis and engine fasteners in both kg-m and lb-ft. This grants technicians the factual, factory-backed measurements necessary to complete a thorough repair overview without any guesswork.