About the Yamaha CT3
A focused 1973 CT3 guide for ignition contact wear, carburetor float condition and fork sealing.
Yamaha’s 1973 CT3 parts reference provides a distinct starting point from the 1972 CT2. The three service products here address the carburetor float, ignition contact assembly and fork oil seals. Even when a product lists both CT models, compare its explicit CT3 application and the installed component before ordering.
Check the contact assembly before replacing ignition parts
Inspect the points’ contacts, moving arm, mounting and lead connection against the fitted ignition. Use the correct service information for adjustment and diagnosis; a weak or missing spark does not identify the points as the only possible cause. The featured points list CT3 1973. For carburetor work, inspect the float, hinge and inlet valve as separate components.
Know your CT3 before choosing partsCT3 repair checkpoints
Use the model, year and fitted component together when comparing these applications.
Ignition contacts
CT3 1973 application
Compare the contact arrangement, mounting and lead. Do not assume a coil or condenser is included with a contact-point product.
Carburetor float
CT3 1973 float-and-pin entry
Match the float profile and hinge. Identify a worn inlet valve separately from a damaged float.
Fork seals
Compare the complete 1973 seal match
The broader seal listing includes CT3 1973. Use the actual 30 × 40.5 × 10.5 mm specification and fitted fork, not a general CT-family year span.
Identify your motorcycle before orderingCT3 identification checklist
- Frame and model
- Record the complete stamped model and frame/VIN characters.
- Engine and fitted assembly
- Record engine markings separately, then compare the component being repaired.
- Assembly comparison
- Compare the fitted assemblies with the correct model-year parts diagram or service manual, especially when an engine, carburetor, wheel or front end has been replaced.
Contact PartsNMore with the model year, frame and engine markings, and component photos.