Modern greener fuels can play havoc with older fuel systems not designed for bio ethanol additives (amongst many). Failure to drain the carburettor/s for the winter lay up allows the petrol to turn into varnish, blocking the jets and coating the float and float chamber, sometimes to the point where it becomes so difficult to clear, replacement of the affected parts may give preferable results?
If you are overhauling your carbs, or just carrying out a light service, then this component and perhaps some of those listed below maybe required:
Add as many components as you wish to the same shopping cart, new screws 985070401098507040129850704006 & drain plug 2L11419100 for example, and still only pay the same single fixed price shipping cost.
This component may have other applications and uses within the Yamaha model range.