1974-1977 Suzuki GT125 Service Manual (80 Pages)

Suzuki GT125 1974–1977 Maintenance Documentation

• Covers 1974–1977 Suzuki GT125 motorcycles, including the A, L, and M model variants with two-stroke twin-cylinder engines
• Third-party publication: Pitman Bikebook of the Suzuki GT 125, authored by John Thorpe and Chris Webb
• Contains over 80 photographs illustrating engine strip-down, clutch assembly, gear selector linkage, and brake servicing
• Stored against your account so you can retrieve it after a hard-drive loss
• No DRM restrictions on the print function
• This 1974 first edition serves as the foundational reference for the GT125 series, providing specific jetting, gear ratio, and electrical wiring differences between the A, L, and M builds

Component Maintenance and Databank

The 1974–1977 Suzuki GT125 manual functions as a practical guide for owners maintaining their two-stroke twins. It begins by establishing safety principles for workshop environments before detailing essential tool requirements, including the use of vernier gauges and impact drivers for specialized tasks. The text then transitions into high-level maintenance routines, documenting decarbonizing techniques, engine removal, and gearbox stripping sequences, supported by detailed photographic logs for every stage of the tear-down.

A significant portion of this document is dedicated to the Databank section, which serves as a repository for identification-relevant specifications. It provides granular details on understanding parts documentation for vintage Suzuki models by listing carburetor needle settings, transmission reduction ratios, and specific fuse ratings for the 12-volt electrical system. This section also catalogs what an OEM service publication covers regarding wheel bearing clearances and fork oil capacities, ensuring precise component identification for the 1974–1977 production cycle.

Technical Specification Previews

The engine specification table documents the 124 cc displacement and the 6.8:1 compression ratio for the twin-cylinder unit. Ignition timing is specified at 22° BTDC in the technical data section. Oil tank capacity is documented at 2.1 pints (1.2 liters) for the 1974–1977 GT125 range. The braking system documentation details front disc pad wear limits using a scribed red line for quick visual inspection. Electrical reference data includes a 15-amp fuse rating and a contact-breaker gap specification of 0.3–0.4 mm.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. A practical 80-page Pitman Bikebook for the 1974–1977 Suzuki GT125, documenting engine, transmission, electrical, and chassis specifications across the A, L, and M production variants for home mechanics and workshop use.