You would have thought that flushing an outbooard with fresh water would rid it of the salt. So after a week zooming up and down the Thames at Lechlade (and getting caught
) I took the thermostats out of the Yam 115 as part of a service. Oh dear still covered in salt crystals despite a weeks use in fresh water.
However I still believe in flushing outboards every time to get out salt water before it crystalises and any silt.