Mike & Christine Salome wrote:
For 4 stroke I/O's:

1. Is it recommended that you change the spark plugs upon winterizing or is
it better to change them in the spring?

2. How about fuel tank...leave it full w/fuel stabilizer?


Don't suppose it matters when the plugs are changed ... on my old boat,
I checked them now and then just to monitor how the engine was doing.
And sure it's best to keep the tank topped up (year round) but with my
carburated engine I'm not that concerned, condensation has never been a
problem. Maybe trailering and storing the boat up and away from the
high humidity of the water helps with that. Now if I had efi I'd keep
it topped up year round and I'd be checking the water separator
regularly.