Wouldn't I get a over temp buzzer prior to that?
I've got pretty much the same motor (mines a 72) but it won't run on muffs. For whatever reason, it won't pick up the water even with a new pump. It works
Not knowing the serial number I allways use the CDI installation instructions
Basically you just need to take pics and start taking it apart. Take your time and use heat and chemicals dont force anything. I believe you just need