bertsmobile1 is a real jerk. All you had to do is say please state make & model but he had to be a smart*ss. By the way, the link on post #7 doesn't work.
Having same problem and it's highly intermittent. Eliminated seat switch, replaced clutch/brake switch. Even with the mower in neutral it will sometimes start to go dead when the clutch is released. As soon as the clutch is engaged it runs great. As I said this issue is very intermittent...