So I had my primary open for the 1st time tracking down some noise issues. The bike has some leaks which I've been trying to track down as well. I think it's the back shifter seal which I'll need to take off the inner primary which I don't think I'm gonna do at this time. Anyways on the shifter shaft itself there was a thin rubber gasket that's been stretched out into an oval. I want to replace this. It doesn't look like it does much. I tried using one of the heavy duty (cometic) shfiter seals there but when I put that on, the outer primary won't fit back snug. I tried looking at the schematic and can't seem to find any info. My question is should that shifter shaft have a thin circular rubber gasket on it? Does the spacer then go on the outside of the primary between the outer primary and the shifter peg itself? Bought the bike used so I wasn't sure if the guy before me maybe had this open and forgot to replace parts. Thx

 

Looking at the microfiche, it appears to be gasket 63869-06 (In the "Primary Housing" section)

 

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that's the tower gasket. 63869-06

prevents leakage from the primary chaincase.

when you install the new one, sticky side to the inner primary.
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Awesome, thanks guys! I'll get that replaced today. Hopefully that fixes some of my leaking issues. Chasing the dragon not sure where it's coming from.