by JimDirt » Thu Jul 27, 2017 12:43 pm
When you rinse/wash it off , you can't see what location its originating from , but , it should have a direction of flow to localize the origin , if the 3 seals are not leaking then it has to be from a case bolt or case gasket , that's about all that is left if the shifter and countershaft seal have been eliminated , unless by chance there is a groove in the collar for the countershaft seal and oil is getting by it , but then you would still see oil coming from the seal , or if by the rare chance you have a O-Ring chain and the countershaft sprocket was not offset and the chain possibly was rubbing and wore a hole in the case ,
So about the only way your going to trace it , is to wash it , run it , and watch closely where its originating from right after you start it , don't let it run too long , but it should only take a few seconds to start leaking , then just take a flashlight and closely look everywhere , if you find nothing , then run it slightly longer , maybe putting a fan in front of the radiators to keep airflow and cooling while running
2020 CRF450R
2006 CRF450X

Weiser , Idaho