There is 1 bolt on the bottom, right behind the valve cover. It is a PITA to get off, had to break it to get it out. I tried to get mine off for about 1/2 an hour and finally gave up. I think it might come out if the valve cover is removed. Seems like the motor is in the way. Good luck. BTW, why are you taking it off?
two bolts on top, one on the bottom and yes, that one is a major PITA.
Seems like it'll be hard to get that bottom screw back in to when replacing the shield.
I tried to remove mine before I realized that I could replace my valve cover fine without removing it.
I ended up giving up as well, but wasn't necessary anyway......