Welcome to the site.
Yep what MJ said.
The motor not being ran for two years wouldn't be a problem if it was ran dry of fuel the last time, however if it was stored with fuel in the carbs it most likely will need cleaning before it will start.
Get a 6 gallon tank and hose add new fuel mix to it (50:1) and see if the bubble will prime and fill the carbs and try to crank the engine. Running it a little with the added oil isn't gonna hurt.
Let us know as you progress and keep posting pictures.
Add to your signature the boat and motors size, type, year and your location (this will help in problem solving later).
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse
Benny
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