I have a 1992 Horizon with an OMC Cobra 5.0.
I have been trying to get this thing started off and on all summer. I would like to get it started then winterize it and seriously need to make this happen today. No pressure.

The boat has not been started in over two years.
I have pumped out all fuel, changed spark plugs and wires, put on a new distributor cap and rotor.
I have two issues going on right now.
First, no spark.
Second, the motor quit turning over yesterday. I'm thinking the next step is to pull the spark plugs and turn the motor by hand to be sure that it's not locked up. I can't imagine it would lock up if it's turning fine and never started.
My guess is that I've killed the starter?
I forgot to mention that I put a brand new battery on the boat yesterday as well.
I have the battery on my charger as we speak to insure I'm working with a good strong battery.
Right now, when I attempt to start, it just goes thump and does not turn.
Any little tiny bit of info you have to offer would be so totally appreciated.
Thanks for reading and thanks in advance for any assistance you have to offer.