hey guys im just trying to remove the rear swingarm and motor on my 04 600rr. i only have 3 bolts left, the bolts that hold the rear arm seem to be look like a 3/4" allen head. what tool do i need? also i have 1 bolt left holding the motor in. it seems to stick through the frame, and there is a strange nut on the outside of it. it has 4 little indents on the nut. if anyone could help me out it would be great.

thanx devan