You really had me going with that last post. SWMBO and I were arguing all day about priorities, when I told her we needed a new boat engine, (thanks a lot (groan)).
These are twin inboards with the 2.21 KM transmissions and look just like the photo
you posted. I'll take a look at that plug
in the morning, I think it's right under the air cleaner. I double checked the oil this afternoon, no water in the oil and no oil in the cooling
The engine starts in 2 seconds and runs great for a 21 year old raw water
(I'm knocking on wood). And you're right, I am nursing them along as I use them less than 100 hours a year!
Rick in Florida