If it has not been running in a long time get a can of OMC Internal engine
cleaner and fog it out. Run your first tank of fuel with a 20:1 ratio as a
break-in mix.


"sts" wrote in message
oups.com...
Hi- I recently came into a 81 Mercury 7.5 outboard, minus owner's
manual.does anyone know what the proper fuel/oil ratio is required for
this motor?