I see this post went unanswered a few years back, but I actually have the exact same problem now. I need to get to the starter bearing and can't get the crankcase cover off. Can anyone make a suggestion?...I've removed all the bolts, gently hammered on it, got a razor blade through the gasket on one corner, but she still won't budge. I hope someone can share their wisdom here. My pic is attached as well.