Whelp, this one's got me scratching my head. I tried removing the cylinder head today from my sons 18' YZ-250X and ran into a little problem. Because of the lack of clearance between the head stay and the frame, I can't lift the head high enough to clear the rear cylinder studs and pull the head out. What am I missing here? This is our first YZ, but I'm finding it difficult to believe this is the way Yamaha designed it? Thinking maybe the factory didn't sink the studs far enough into the cylinder.
What do you guy's think? Any of you YZ-250 guru's familiar with this problem? Looks like the easiest solution is to tighten the rear studs enough to give me the clearance. I could also try removing some of the aluminum from the frame with a dremel, but prefer not to do that if possible.