Engine stops when hot.
I have a 4 1/2 hp B&S on a push mower that stops when hot. I have replaced the carburetor & fuel tank, thinking it was fuel starved, due to a rusty tank. Now it runs great, smooth then stops! I reprime the carb, one pull on the starter and it's running again. Then after five minutes it stalls again. It is a 09L602-1623-F1 model. Any ideas anyone??