This is one of many damage, wear and corrosion prone items in and on the carburettor. Careful inspection of all the internal and external working parts, and replacement, where required, will help restore the carburettor back to full performance.
Check our online schematic to see exactly which part-numbers you may wish to order.
Other carburettor related components, mechanical and cosmetic, you might consider:
Pro-workshop gasket sealant: 08C70K0234M. Easy to achieve a perfect seal every time.
Add as many items as you wish to the same shopping cart, new gasket kit 16010KPK901 float 16013KR3980 & float chamber 16015MAK003 for example, and still only pay the same single fixed price shipping cost.
This component may have other applications within the Honda model range, so please check the part-numbers you order are correct for your model.