So anyway, just a heads up, these are overlooked way too often and Will absolutely contribute to catastrophic engine failure.
Easy fix, and it’s way worse in the salt. If I were you I’d replace mine every 200-300 hours. I know stuff, now so do you.
For what it’s worth, there’s a smaller one in the very top of the motor (in the head itself) and that one is always the worst. At least change it, you’ll be glad you did. If you don’t it’s only a matter of time until it corrodes, breaks off, and ends up in the water jacket essentially killing your nice toy. It happens more than you know
Did mine today, pretty easy job, probably take you 30-45 minutes if you have even a modicum of mechanical knowhow.
I bought this motor last year off a lake in Alabama. It had a little under 300 hours on it, mostly fresh water. I put about 40 hours on it last year, about half in salt and half in fresh. These absolutely could have gone a lot longer, they are not that bad eaten up.
I’d go ahead and change the plugs while you are right there. you have to pull the plug wires off anyway for easier access.
I weighed the new ones (oem parts) and then the old ones, not much difference. Its really the only way to tell.
Anyway, this is what they looked like, old ones, the new ones, and the hole they came out of.
This is the one on the port side of the engine. The others are in the back of the motor between the top two sparkplugs and the bottom two sparkplugs. (like in the picture above this one and below this one.)
This is the small one in the very top of the motor. I didn’t get a picture of it because I ordered the wrong one and when I was putting the old one back it fell apart. It was absolutely the worst and the only one that really needed changed. It was the easiest to get to and the cheapest anode too, so theres that. Just unscrew the 14mm bolt and the new anode screws into the bottom with a phillips screw. easy peesy for a japaneesee thingy.
