These are items that do wear in time, almost imperceptibly at first, but the deterioration will get worse, with lower performance and difficult starting. If in doubt, replace them!Check the schematic for your model (where available) and make a better informed decision when placing your order. No company is more pro-active in seeking out those rare factory OE spares!
We can also supply the other items you may need to complete your carburettor rebuild - check both the Product Gallery for your machine, and 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.