250-500cc wr 250 2009 milkshake oil

hello
yesterday in friday riding i sound engine is hot
it dings but water is not getting out
i looked down and i see milkshake is going out from vented tube
any one know what is the problem
is it the water pump seal ?
thank you all

Most likely. It happened to my sons old CR80 years ago and that's what it was.

Yes, water pump seal.

If your vent tube is hanging down when you cross deep water the water will cool the transmission case and suck water up the vent hose like a drinking straw. You can run the vent hose up to the air box to prevent this.

Absolutely true, if you go through a water crossing the gearbox vent tube sucks water straight back into the gearbox. You must move the vent tube up and into the airbox. It is incredible just how much water gets sucked back up that tube!

Yep, I had the same thing happen from riding in deep melting snow. Change the oil a couple of times. If it still gets water in it, change the water pump seal. Otherwise, run it!