Tige- Starter Not Cooperating (Melted)
 

Posting for a buddy to seek guidance as we are out of ideas.

Last week he dropped the boat in for its maiden voyage/preseason checkup. The boat appeared to running a bit off as you would need to up the RPM for the perfect pass to turn on. While doing misc checks to make sure everything was running properly a smell of burning plastic started to come from the engine bay. Fortunately, the boat was not taken off the trailer while doing the pre season checklist and the truck needed to just drive up the ramp. He was able to trace down the plastic smell to a 90 amp fuse on the starter which has all but melted into a unrecognizable pile of plastic. So a new starter and fuse were ordered and installed. Unfortunately, now you can turn the key to power the all the electronics work; however, when you turn it more to engage the starter there is no crank. We have checked that there is power going to the starter, but it doesnt seem that the remote wire is conducting any when we tested that. Yes, we did check that the kill switch was correctly positioned and that the boat is in neutral.

Maybe a tripped breaker? Otherwise, did all the leads get put back on the battery posts when you finished the starter install?

You should take a test light & see if you have 12v at the Starter lead when you turn the key. If you don't have power at the Starter then step #2 Track down and in line fuse that regulates, Example The starter solenoid. Make sure you clean up all the contacts b4 re installing the new starter

Check for 12 volts at ignition signal wire when switch is turned to crank position.
Most likely you have another fuse blown for the ignition switch