Gear case bolt removal (1200)

I've already posted it here, but just realized it's the wrong place: http://vfrworld.com/forums/mechanics-garage/43548-gear-case-bolt-removal-1200-a.html#post414385

I need to replace gear case bolt (it's part number 3 on this chart 2010 Honda VFR1200F AC FINAL DRIVEN GEAR | Babbitts Honda Parts House). Do I need to disassembly the whole final driven gear? Or can I just unscrew the bolt? As far as I know the oil level is slightly below the bolt so it won't leak out. But I just need to be sure that there's nothing that could jump out.