Remove the lower mounts clamshells, and the nuts from the upper mounts. Remove the vertical throttle shaft and the screw from the bottom of the fuel connector. Then you can lift the whole motor out of the steering bracket. Upper mounts are then a piece of cake.
I’ve had countless of them apart in this manner, but I’m sitting here trying to get a mental picture of the upper front mount nuts. Surely one of them can be loosened enough to slip out of the slot, but I can’t visualize it right now.
Needless to say, a hoist will come in mighty handy.