My Bobcat 743 stalls at times but restarts. Unfortunately it always seems to do it on a hill. Everything I do here is either uphill,downhill or side slope. This old machine will still roll a little with no power and the brake is worthless. Can get scary. After is sits for a couple of minutes it will restart and be OK. Only does it sometimes and only a hill. Just rebuilt the engine and has new fuel filter and most of the lines. Plenty of fuel in tank.