Hi there - thanks for the replies. I tried sea foam via the plug, over a number of days. Might have loosened up a bit, but not much.
Changed the oil.
Nothing else seems to be working. :(
So I went to go sailing for the first time this year, had my outboard down below for six months lying on its side.
When I went to start it, the pull cord stopped as soon as the fly wheel tried to engage. Kept trying and it's loosened a bit, but still super stiff.
I took the top off and can...