About the Kawasaki S3 400
Engine, ignition and fuel-tap service for Kawasaki’s 399 cc two-stroke triple.
The Kawasaki S3 400 Mach II uses a 399 cc, three-cylinder two-stroke engine. On a restoration, the installed ignition and carburetor equipment are important parts references: a converted ignition or replacement carburetor can change the service components required.
Check the installed fuel and ignition equipment
The gasket set, contact point and petcock repair kit linked below list S3 1974–1975. Some small carburetor parts are recorded specifically as S3A 1975. Keep that model suffix and each part’s year range with the assembly you are repairing.
Know your model before choosing partsKawasaki S3 400 repair checkpoints
Use the complete model, year and fitted assembly. Each product has its own application and package contents.
S3 1974–1975
The linked gasket, ignition-point and fuel-tap repair listings include these years. Compare the supplied contents with the actual job.
S3A 1975 hardware
A carburetor float-pin entry uses the more specific S3A 1975 designation. Keep that suffix when checking small carburetor components.
Other Kawasaki triples
A shared entry on one product does not prove complete S1, S2, S3, KH or H-series interchange. Chassis, fuel and ignition repairs each need their own match.
Identify your model before orderingKawasaki S3 400 identification checklist
Use the identification on your machine and the component being repaired.
- Read the complete frame model and year; record engine markings separately if the engine may have been changed.
- Identify the carburetors and whether the original contact-point ignition is still installed.
- Photograph the fuel tap and inspect the original repair pieces before selecting a kit.
Contact PartsNMore with the complete model, year and clear photos of the identification and original part.