Yz450f rebuild help

26 replies to this topic
  • 03yzf450-kuke

Posted March 19, 2015 - 01:39 PM


Well no I drained the oil and coolant before removing the cc cover so that couldn't be it

  • grayracer513

Posted March 19, 2015 - 02:22 PM


You're not following.  The leak that caused your oil to get contaminated was at the crankcase cover gasket and O-ring, not the water pump.

  • 03yzf450-kuke

Posted March 19, 2015 - 03:35 PM


I don't understand. Why do you suggest those seals were leaking? I didn't even replace those seals just the impeller seals and it fixed my problem

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  • grayracer513

Posted March 20, 2015 - 06:26 AM


You had the right cover off to replace the shaft seals.  You put it back together with the old gasket and O-ring? 

  • 03yzf450-kuke

Posted March 20, 2015 - 08:31 AM


Yes that is correct. But I found the coolant in my oil when I drained oil before taking cover off.I know its frowned on to re use gaskets but I did any way and no leaks

  • ghorn0103

Posted April 07, 2015 - 05:11 PM


Turns out it was one of the dowl pin o-rings between the right crank case cover and case or the one between the cylinder and crank case. Wasnt sure which so i replaced both o-rings and dowell pins. Completely solved my issue. Thank yall for all the help!

  • 03yzf450-kuke

Posted April 08, 2015 - 02:34 AM


Ride on brotha

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