[HONDANNY]

Which waterpump seal do I replace on my zr580 ?

The big o-ring inside the housing or the little o-ring on the bolt outside the housing ???

Or both ???

 

[SteveR]

do em all while its apart, theres the rubber washer on the water pump impeller, and then theres the two seals after you pull the impeller off, and pull the shaft out.

 

[kev]

And you might want to consider doing the impeller too. Mine had about 70 degrees of free play when I did it.