Been asking a lot of question last 24 hours and I appreciate the help.
Here is the situation. Boat will not start. Starter seems nice and strong, but will nothing "catches" or turns over. Just the sound of the started. Charged both batteries and put to "both" for batteries with same result.
Had my wife watch the main belt when I tried to start and it doesn't move. It looks to move forward a little, but then back. Belt looks good and tension seems fine.
Not sure what the name is, but took the cap off the thing that comes from the spark plugs (that spins) so it wouldn't engage the engine so I could try to move the belt by hand and I couldn't.
Should I be able to move the belt with my hand? If so, is it bad that I can't. It's a bravo 5.7 mercruiser. I should say somebody at Whittier did look at it and tested to make sure that he got a spark from the spark plug and he did.
I'm hoping this isn't going to be too expensive. Already having trailer issues. Man what a week for boating!!