About the Honda CT125
A service-parts guide for the original CT125 and its explicit 1977 applications.
Honda workshop literature documents the original CT125 in the 1976–1977 period. Honda later used CT125 for the modern Hunter Cub, introduced in 2020. The repeated badge can obscure a large difference in motorcycle design, so this collection guide focuses on the older machine and the explicit 1977 applications in the featured parts.
Plan tank, carburetor and engine work as distinct repairs
The featured float and pin, fuel petcock, clutch plate and cylinder-head gasket each list CT125 1977. A petcock repair addresses fuel leaving the tank, while the float belongs inside the carburetor. For engine work, identify the head joint or clutch component being serviced before deciding which additional pieces are needed.
Know your CT125 before choosing partsCT125 repair checkpoints
Use the checkpoints below to prepare the parts list for your repair.
Original and modern
The badge alone is insufficient
The featured 1977 parts belong to the older CT125 application. The modern CT125 Hunter Cub or Trail 125 requires its own confirmed parts listings.
Fuel delivery
Float and petcock solve different problems
A float operates inside the carburetor; the petcock controls fuel flow from the tank. Identify the source of a leak or supply problem before choosing the component.
Engine service
A head gasket and a clutch plate are individual items
The linked head gasket does not establish a complete engine gasket set, and the linked clutch plate does not establish a full clutch assembly. Check the repair’s remaining parts separately.
Identify your motorcycle before orderingCT125 identification checklist
Record the motorcycle’s identification and check for replacement assemblies before choosing service parts.
- Establish that the motorcycle is the original CT125 and confirm its model year from its identification and documentation.
- Photograph the carburetor, fuel tap and tank mounting arrangement; compare them with the product before ordering fuel-system parts.
- Record the engine identification and compare the relevant gasket or clutch plate with an appropriate original-model parts diagram.
Contact PartsNMore with the model year, frame and engine markings and clear photos of the component being repaired.