I've been searching for information on a Merc 500/50hp engine I have just bought and I have come across these 2 sites which should be of intrest to some of you.
This first site contains downloadable workshop manuals for Mercury engines back to the early 1980s'

http://1manual.com/Mercury%20manuals/intro.html

This is a link to Brunswick Marine download site, which contains downloadable Operation and Maintenance Manuals for most of their products, back to 1960.

http://download.brunswick-marine.com/do ... g=EN&mod=4

Bob.