When overhauling the gear selector mechanism, replacing as many of the worn (possibly damaged?) items as possible will simplify the building process and subsequent adjustments required to set up the assembly correctly.
This will improve the change quality and help achieve a smooth, crisp action.
Please be aware that interfacing worn parts with new components may cause premature wear to those new parts!
More related components you may wish to consider:
Add as many items to the same shopping cart as you wish, new seals 93210075909321015414 and bolts 9581706012 for example, and still only pay the same single fixed price shipping cost.
Pro-workshop gasket sealant: 08C70K0234M. Making it easier to achieve a perfect seal every time.
Please be aware that this component may have other applications within the Yamaha model range.