Welcome to the forum.
I'm not sure about where on the Craftsman, but yes the newer equipment has several 'safety switches'- seat, clutch/brake, blade engagement, trans. in neutral, are the ones I can think of right off. Could also be a loose connection someplace, like to one of those switches or a ground. As for checking those switches, it would depend if they should be "open" or "closed". Good luck!!
I'm not sure about where on the Craftsman, but yes the newer equipment has several 'safety switches'- seat, clutch/brake, blade engagement, trans. in neutral, are the ones I can think of right off. Could also be a loose connection someplace, like to one of those switches or a ground. As for checking those switches, it would depend if they should be "open" or "closed". Good luck!!