Unable to find Factory/OEM Outboard Service Manual for 1984 Mercury 50 E

I just recently acquired a 1984 Bass Tracker Tournament TX 17' boat, with a 1984 Mercury 50 E Outboard. (Serial #: 06539458)

I need to work on the Engine and have a Clymer Shop Manual on its way... However, I would really like to find and purchase the Factory/OEM Service Manual as well, but after countless days and hours of searching the internet it is still not found...

I continually get directed to Instant Download Sites, saying "We have what you are looking for... Just pay $$$$ and Click the Download Button..." NO Thanks... I want the actual Service Manual not a photocopied version of who knows what manual or worse a download file with a "Free" Virus included...

After trying countless different wording combinations I am not sure what else to try... It appears that all the Genuine Service Manuals have a 90-###### number in the lower right corner, but without knowing which one is for my engine this does not help either...

Does anyone know where I can go to Correctly Identify the 99-###### number or whatever else can be used to find the Actual Factory Service Manual? (i.e. Not After Market or Fake Download site. One similar to the image attached...) I am beginning to think that a Factory Service Manual never existed for this Year Model.

Thank you in advance for any help you may be able to provide.

Hi there, you're looking for Merc part number 90-86135--5 "/1-593 < sometimes used to depending on where you look".

First scroll to the bottom for look up,
http://www.ebay.com/itm/Mercury-Mar...-Cyl-and-50-60-70-3-Cyl-86135-5-/321175455985

Then order from one of these,
http://www.ebay.com/sch/i.html?_fro...0.H0.X90-86135--5+&_nkw=90-86135--5+&_sacat=0

Or go new running the number 861355 here, http://www.marineengine.com/newparts/part_details.php?pnum=MER++90+86135++5
Or here, http://www.mercruiserparts.com/partsByNumber.asp

Hope this helps, good luck.

Boat_tech,
You are awesome... That is exactly what I was looking for...

I am going to assume you knew this because you are an "Expert" and/or have access to special resources, rather than assume my internet searching skills just suck... Wait, don't answer that... I am not sure I can handle the truth...
Many Thanks... Have a great day.