Transmission/Oil leak

HELP!

I have a 2003 FZ1 with 34,000 miles on it with a problem. I came out to the garage one morning and found an oil patch on the floor. :( I tracked it down to the counter-shaft oil seal (suck!!!) As far as I can tell in the repair manual the transmission needs to be split open just to get at that oil seal. Am I correct or can this seal be changed by simply removing the counter-shaft sprocket?

Also, if the transmission does need to be opened to change that oil seal, should I go ahead an replace the main bearings on that shaft?

I have all the parts (including the bearings) ordered so I should have them by next week.

Anyone ever done this job before? Any words of wisdom/caution?

Thanks,
Chip
 
I have replaced seals on output shafts without tearing down the whole transmission but that's only OK if there's nothing else wrong with the shaft or bearings. I looked in my manual and couldn't really make a determination but if you have all the parts anyway, you cold see if you can pull the old seal and then if all else looks OK maybe a seal is all you need.
 
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