don't suppose anyone knows the part no. for the sprocket locking tab for a 5vy

Don't know if it's the same (probably is) but you have all part # at yamaha-motor.com

They have all the parts / schemes on line.

Cheers,
Joao

It is 90215-30233-00

I could do with a couple of these, where would you get them? Is there an alternative to the local yamaha dealer?