It will be quite heavy & unwieldy to pull engine&gearbox together, and, the neutral switch on the bottom side of the gearbox can be easily damaged if the unit is left to rest on it or it is mashed against something. It it were me, I'd, remove the aircleaner assembly, pull the swing arm pivot bolts out, loosen the rear shock bolts a bit, unhook the rear brake rod and swing the rear swingarm assembly back. Then disconnect and remove the gearbox from the engine, and lastly, remove the engine from the frame (after disconnecting the rest of the wiring harness of course). IF you look at my article in the wiki-related subforum on clutch replacement (PDF is attached to a thread in there, as our wiki is damaged and the pictures were lost from it), it will give you the process to get things taken down to that level with the gearbox removal, for starters.
