Starter wont disengage

[schnidly]

I own a 1988 Mercury 90 hp 3 cylinder outboard serial number 0B302485. Last year my son took the boat out and had a problem where the starter would not disengage and kept spinning while the motor was running and I believe when he disconnected the battery to kill the starter he fried my gages, alarm module, rectifier, and tachometer. Turning the key off did not work and that's why he disconnected the battery cables. The battery was about 5 years old so I believe it was low on voltage and welded the contacts of my starter solenoid together. I did replace the starter solenoid also. My question is how can the starter be shutdown in a case like this without pulling the battery cables and frying things electrically?

 

[papyson]

as far as i know the battery will have to be disconnected... you want to make the break as clean as you can make it with a minimum of sparking....and do not go reconnecting the battery or touchy touchy leads to see if the problem has magically disappeared...find the reason for the problem.....i would also give the start switch a good look with an eyeball as well as a meter to make sure the 12v to the solenoid is being disconnected when you go to run position..