Only if leaking.... I do good chain maintenance so I get 15K out of a set of sprockets and a chain. Counter shaft and pushrod seals are cheap and easy to do when it's open down there, so I replace then when I do the sprockets and chain. First one was starting to weep a little. At 30K all was good, and the pushrod was weeping a little at the 45K mark.
On the sport bike there is alot of plastic removal, so I try to do anything that needs to be done...LOL...
99 TL1000R - Blue and White
02 GSX-R1000 - Blue and white
94 RF900R - Black - SOLD to get....
14 DL1000 - Cool tan color!!! WOOT