I am trying to figure out if I have a missing cylinder head bolt on my 400ex. If you are looking at the cylinder head cover from the front, I have an empty tapped hole right next to a pin or nub looking thing. When I look at the service manual, it looks like nothing goes in this tapped hole?? Can anyone help me out here? BTW, the depth of the threaded hole is about 3/4"...

Thanks,
Clark

 

Anybody?