Re: best repair manual for a 1980 40hp merc ob ?
I prefer Seloc manuals. They are sometimes a little intimidating, but they generally provide more diagrams, pictures, and more information than the Clymer manuals. But the factory manual is the best if you are mechanically inclined, except that they always want you to use fancy factory tools.<br />Selocs seem to be the best if you you want to be able to do all your own work, and help you decide what you can't do yourself.