Re: engine service manual question
Well; I would not advise getting anything except the genuine Mercury manual. Forget the Clymer or Seloc manuals. Other than for very general information, they are largely useless...and have been demonstrated to have erroneous information.
You will need to know the year of your engine. You can buy hard-copy versions or manuals on CD.
There are a lot of links here on i-boats for free downloads as well.. You can start with the FAQ at the top of this forum.
Chuck