YFZ waterpump rebuild

[MonsterEnergy19]

I was wondering how hard it is to rebuild a waterpump on an 04 yfz450? Do u have to have ne special tools? Any help would be aprecitited. Thanks. Needs to be rebuilt before 4Stroke nationals at Budds Creek!

[Bill Fuller]

Not hard at all.Remove cover and pull out impeller.Replace impeller and seals and you are done.Shouldn't take more than an hour.