HD21H42 Poulan. Starts & runs fine for a few minutes then stalls. Then will not start until it cools down. Clean fuel, new fuel filter & plug, oil good. Cleaned carb. Thought it was a choke issue but only adjustment is cable position which I tried. B & S engine. Dirt in carb?

Hi,
I do not know what a few minutes means! Generally, under 20 minutes, suspect fuel delivery; over 20 minutes, suspect the ignition.
Peace,
Clarke