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ktm water pump leak
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Posted by: w4g

I have a leak at the water pump weep hole. We have changed the 2 O rings and 2 shaft seal rings as well as the gasket and the water pump cir clip and I still have a leak. Anyone have any ideas on what is going on and how to stop the leak.

Thank you

Posted by: JonA

I've been having the same problem since puting in a new cam in.Going to get new orings an seals and try some yamabond with it ,hope it works.

Posted by: quad97

Did you use the seal instalation tool on the end of the cam when you put the new seals in? It is a cone shaped plastic piece that keeps the sharp edges from cutting the seal lips.

Posted by: mxraptor149

I had this issue with my old 660 Raptor — different makes, I know — and found no solution with replacing every part inside the water pump, until I bought a complete water pump unit from Yamaha and just installed it.

Posted by: w4g

Thanks for your input...the problem is fixed. Let's go racing!

Posted by: realbadlarry

Well....what was it... how'd you fix it??

Posted by: w4g

We used another set of seals and o rings because we couldn't tell what was wrong. We must of had a bad one or something. I am not really sure but the third time was the charm.