About the Honda NA50 Express II
Fuel supply, carburetor float and contact-point parts for the NA50 Express II.
Honda identifies the NA50 as the Express II in its owner and workshop literature. When putting an older Express II back into service, separate the tank’s fuel supply from the carburetor’s fuel-level control and the ignition system. Each has its own inspection needs, even when the symptoms first appear as difficult starting or poor running.
Separate tank fuel control from carburetor fuel level
The petcock controls fuel leaving the tank; the carburetor float works with the float valve to control bowl level. The selected float and petcock list NA50 1979–1981. The featured contact points list 1979–1980, so a 1981 ignition needs a separate component check.
Know your NA50 before choosing partsNA50 Express II repair checkpoints
Use the checkpoints below to prepare the parts list for your repair.
Fuel system
1979–1981 examples
The featured float and fuel petcock include these NA50 years. Match carburetor and tank hardware separately.
Ignition
1979–1980 points entry
The highlighted points application stops at 1980. The wider fuel-part range does not add 1981 ignition coverage.
Express model names
NA50 is the required line
Do not select an NC50, NB50 or SA50 entry merely because the product title includes a similar small Honda.
Identify your motorcycle before orderingNA50 Express II identification checklist
Record the motorcycle’s identification and check for replacement assemblies before choosing service parts.
- Confirm NA50 Express II, the model year and original market from the machine’s identification and documents.
- Record the carburetor markings and compare the float hinge, shape and valve arrangement.
- Identify the actual ignition system before ordering contact points, particularly for a 1981 machine or an engine replacement.
Contact PartsNMore with the model year, frame and engine markings and clear photos of the component being repaired.