I had to repair my exhaust collector and I am in the process of putting thing back together.
I ordered 2 exhaust gasket http://www.boats.net/parts/detail/yamaha/Y-26H-14615-01-00.html and I see in the parts list http://www.boats.net/parts/detail/yamaha/Y-26H-14618-00-00.html Ring stopper. I did not have any ring stoppers when I took everything apart. What are they for. Should I order these are they necessary?