Carburettors are items that do wear over time, almost imperceptibly at first, but the deterioration will get worse, with lower performance and difficult starting. If in doubt, where they are still available, replace them with assemblies like these 1610340430516101404305.
We can also supply the other items you may need to complete your carburettor rebuild, should new replacements not be available, check the online schematic where you can find all the items with their respective part numbers. This will aid you in locating the correct items for your model.
Alternatives:
Check the schematic for your model and take a better informed decision when placing your order, will you need new seals, studs, nuts, spring washers and perhaps new throttle cables for example?
No company is more pro-active in seeking out those rare NOS Honda spares; that said don't miss out on this item.
Checkout our new none-OE high quality replacement parts we supply for the CB SOHC four classic machines. Exhausts, seats, side covers and much more besides.