Same thing happened to me. Just bought it in used condition. Started right up first 6 or 7 starts. Ran like a champ. Stalled it in heavy grass. Put it in neutral, disengaged table, depressed clutch, made sure I was on seat to engage safety switch, battery is new, turned key ... nothing. I am considering replacing the starter but would like to avoid it. Maybe it has some unusual quirk? Let me know if you get any positive responses? Thanx.
Lawrence Hittle, May 2007