just bought a 07 pro started up to make sure fan comes on which it did, top hose was warm bottom 2 hose`s  on the pump were cold took of the pump and took apart noticed the plastic impeller threads are gone so would not spin so hoping this is the problem ,

after a search on the net most places sell the plastic impeller came across splat website and they sell a alloy one ,has anyone bought one and are the better than a plastic one  

Edited July 26, 201511 yr by millerme

Dont know but definatly replace the hole assembly, so seal, and shaft. THose wear quit quickly.

 

There is a new assembly of the newest bikes, whichs looks better designed, you can order it and it does fit older bikes.