Hi,I would like to replace the impeller in a CV40 Yamaha,have read the manuel and see the proceedure however I cannot see how the water pump connects to the pipe/canel to deliver the water to the engine. Is this just a push on connection or is there something there that needs to be disconnected.The proceedure,undo five retaining bolts,the gear control and remove the lower leg seems straght forward,is there something I am missing,thanks.