1999 300EXC headgasket or waterpump seal?

[penguin]

I was out practicing for a cross-country race today and got stuck at a bottleneck at a creek crossing and my bike got a little hot. I noticed it started making some rattling noises on my last lap and I parked it for the day. I started draining the tranny oil in preparation for tomorrows race and the tranny fluid came out looking like a strawberry milkshake! I checked the radiator and it was down on coolant slightly. Do I have a blown headgasket or a bad waterpump seal? There is a KTM shop support truck at the track that might have the parts. I don't race until about 3 tomorrow afternoon. How hard is it to fix either of these possible problems? Could I do it between 8 am and 2 pm tomorrow? I have never been into a KTM before and haven't worked on a 2-stroke in 15 years ...help!

 

[gasgasman]

You have water pump seal leaking.

You have to pull the clutch cover off to get to the seals.

It is really not that big of a job.