My bike was running fine after valve adjustment for a week now but this morning when i went to warm it up i noticed a lot of oil seeping out from the header area. After removing all the fairing i noticed that there is a small hole on the cylinder head below the exhaust port( 4 holes along the head 1 under each exhaust port) the oil is only coming out of the hole closest to the cam chain side not out of any of the other 3 holes. I am stumped to what it can be other then excessive oil pressure causing it to spill out. It runs perfectly fine other than the major oil spilling out, when i arrived home last night didn't have this issue and no oil marks on the ground. Any hints???

 

Check out this link in the forum.
https://cbrforum.com/forum/f2-tech-9...n-know-114262/

Internal valve cover gasket is misaligned allowing oil into spark plug tubes. Little hole lets out oil.

 

GPFan1's right on the money - it's just a weep hole, to ensure fluid of any sort, isn't pooling around the plugs - did you torque all the bolts to spec, and use a good torque sequence?

If by any chance, all you did was tighten all of the bolts down, not using the proper torque value (7 ft. lb, if I remember correctly), you might just luck out with loosening everything up, and torquing to spec... with a torque spec so low, if you did just tighten them down, it would be very easy to over-torque these bolts.