Re: honda bf100 motor laying on it's side when I stood upright leaked oil
Hi, gordko,
Welcome to iboats. :welcome:
Four stroke outboards must be laid down ONLY as specified in the Owner's Manual or oil will leak into the cylinders. Sounds like yours was laid down wrong.
Remove the plugs and turn it through until no oil remains. Then try starting it (with cleaned or new plugs and refilled oil). If you are lucky it will clean itself out.