Have just bought a new water pump seal for my rev 3 125. does the seal go in with spring facing impeller?

That should be correct. Are you also replacing the shaft? As it`s usually the shaft that wears.

Normally seals work that you put the spring towards what you want to keep in (towards pressure). So in case of a crank towards the crank (you dont want it to leak out pressure), in case of a suspension you want to keep the fluid in so towards the lower fork (except for up side down fork lol).

So most of the time you should be able to reason how and why a seal should be mounted in some way

Edited March 24, 201511 yr by crazybond700

Thanks for help guys now got to wait for seal to come in post.

That should be correct. Are you also replacing the shaft? As it`s usually the shaft that wears.

the shaft looks undamaged