Counter shaft seal

[D.e.e.]

I noticed my counter shaft seal is leaking and was wondering what seals the collar to the shaft? The engine was just completely rebuilt 200 miles ago. Should I use a little sealer on the inside of the collar to the shaft?  Sorry if this is a dumb question.

[SUPERTUNE]

Not a dumb question... Yes, You need to Yamabond or  Permatex Motoseal the collar in against the inner countershaft bearing or they leak!
I do on all my engine builds.
Chuck

[mjsracing]

After about 1000 miles from rebuild, my countershaft started leaking slightly as well. I was worried that the bearing was loose and caused the seal to fail. It did not seem loose.

My plan, subject to guidance from this forum, is to replace the seal and collar.

Just to be clear, the hot setup is to Yamabond the collar to the bearing, not the countershaft? Will the collar spin with the countershaft or will the countershaft spin within the collar?

I'm trying to visualize if the oil seep is between the seal and the collar or the collar and the countershaft... Seems like the collar should spin to me... Please educate me!

The expertise on this forum is awesome!

Thanks!

[SUPERTUNE]

Leaks from under the collar, so some on the shaft at the bearing inner race works fine.
They did come glued ever so slightly from Yamaha when new.

I always cover the shaft plugs also with Permatex Ultra black and glue in the neutral switch housing and on the srews so I don't have to make them over tight and crack it.


I have the seal on and collar glued in with sprocket tightend up some with my small Dewalt impact before I even assemble the cases and write on sprocket with marker "NOT TORQUED" so when I get in in the bike I finish torquing it and fold locking tab.

Chuck

[D.e.e.]

Thank you for the info. The collar came off pretty easy so that may be the source of the leak and not the seal. I'll clean it and seal it tomorrow and hope that it fixes it. Thank you again.
Dane