For this level of service, there's no substitute for having the real paper shop manual there to guide you. In my first post, there is a link to buy one direct from Honda (free shipping) and is money well spent. Getting it apart is one thing, but getting it all back together is a lot easier when you have step-by-step instructions and illustrations. Best $39 you'll spend and makes DIY service a LOT easier.
Honda Marine Shop Manual
Caveat: I work for Honda, but the preceding is my opinion alone.