Countershaft sprocket seal

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JL
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Countershaft sprocket seal

Post by JL » Sun Nov 02, 2008 4:43 pm

Ok, so thought I would give this a go seeing as I was changing the chain and sprockets and have had the classic oily starter symptom for a while. All was going well until it came to removing the old one - I couldn't just prise it off, it was stuck and needed to be scraped off with a screwdriver. :shock: Got me wondering that maybe I had pulled off the wrong seal, or that the one on there was incorrect, as there didn't seem to be any discernible tabs on the rear face of it. The ring it sat in had 6 small holes if I remember correctly, and the old seal was completely blocking them. :? Anyway, I placed the new seal and it seems to just sit there, not really tight, but not too loose either. Is the cover plate meant to hold it in place? I put everything back together and took it for a run, and there doesn't seem to be any leakage, but I am still a bit concerned I may have done something incorrectly as by all accounts on here people have just been able to pop off the old seal without any problems. Is there something I am not getting about this supposedly simple procedure?

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Re: Countershaft sprocket seal

Post by ekoja » Mon Nov 03, 2008 2:16 am

Somewhere lurking in here there is a series of post about this very thing.
Having said that, I tried search and could not find anything, but I know its here somewhere.
Hang about.

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JL
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Re: Countershaft sprocket seal

Post by JL » Mon Nov 03, 2008 9:21 am

Yes, there is a bit of info on here, but I haven't been able to find anything regarding having an incorrect seal or needing to scrape the old one off. I have done about 60km on it now and inspection of the starter is yet to show a film of oil. There was no pool of oil underneath the bike today after a short run last night either, so I imagine that can only be a good thing. :dontknow:

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steve speed
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Re: Countershaft sprocket seal

Post by steve speed » Mon Nov 03, 2008 9:31 am

if you replaced the one behind the sprocket then that's the one ,,,did you use a genuine yamaha part ?? when i did mine i had to bash it in a bit there should be 4 tangs on the back of the new one and they are about 1mm longer than the old one , if yours had no tangs on the back it was the wrong one ,,so if you used a yamaha part ,,its not leaking then you should be ok, i will see if i can find the post that shows the seal :D
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steve speed
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Re: Countershaft sprocket seal

Post by steve speed » Mon Nov 03, 2008 9:43 am

Image
Image
this is the seal ,, new one with longer tangs
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JL
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Re: Countershaft sprocket seal

Post by JL » Mon Nov 03, 2008 9:45 am

Yeah, got the seal from a Yamaha stealership, has the 4 tangs and looks just like the one in previous post on here showing them side by side (old and new). Guess I'll just keep an eye on it :cyclopsani:

edit - looks like you beat me to it but yep that's the one! The old one was the same diameter but didn't seem to have tangs when I peeled/scraped it off the ring it sat on. It just sat flat on the depression in the ring. Figured if it didn't I could have just slipped the screwdriver in a gap between the tangs to get some leverage.

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