trying to find a part number '84 XS400 Maxim

I am leaking a bit of oil from a seal near the front sprocket but the seal doesn't show up on the dealer pictures. When I remove the left side cover from the sprocket area, I have 4 seals to which I can replace,

1, output sprocket shaft seal
2, shift rod seal
3, nuetral light cover o-ring

4, top left corner slightly above the nuetral light cover has a 2 inch rod going in to a seal and held in place by the side cover.

Its number 4 I need but its not to be found.

Anyone have access to part numbers or diagrams which give a part number?

Thanks

 

http://www.cmsnl.com/yamaha-xs400k-maxi ... partslist/

Check it out. My browser at work is out dated and I can look at the pages up close so I don't know if they will have the part you're looking for or not. I believe the 84 is the same as the 83.

 

Yeah been through the pictures a million times, you can see where the seal goes on the crank case picture but no reference to the rod of shaft that sit there in any of the parts sections.