I've got a Johnson 3HP manual. As Evinrude and Johnson are the same it might be useful if nothing else comes up. Are you sure it's a 3.3 - googling shows these to be pre-1994.
There were 3.3 hp models from 1991 to 1999 and also 2001 (Don't know what happened to 2000) as well as some very much earlier.
The model number, on a plate on the transom bracket, will tell you the exact year by reference to http://www.skoterskroten.com/img/arsmodellstabell.pdf
It should be possible to order an owners handbook from a Johnson Evinrude dealer if you cannot get a copy of one for the right year.