That makes sense. Could it interfere in any way with a fish finder? Not sure why they're there now. That's the reason I was going to replace with OEM recommendation. Was surprised to find them installed. Not knowing outboards I thought there might be a good reason for them.
I just bought my first outboard boat and am starting to winterize it. I'm changing out my spark plugs with new and found that my motor (1975 Mercury 110 Thunderbolt) is using Autolite 7255 non-resistor plugs. My manual is saying I need Champion QL77JC4 or the NGK BR6HS plugs. It looks like...
