Hard to tell from the pictures. But looks lean to me. I would like to see alittle more of a cardboard brown color on the porcelin. That being said the only way to be sure its lean is to do a plug chop. That requires a couple spare plugs and a wide open place to get to 4th gear just before the rev limiter. Shutting it down and pulling the plug to cut the threads off and look for a ring of color about 1/4 off the base of the porcelin.