Try choking it. After couple pull on pull start.No start. Make sure fuel valve is open.After that pull the spark plug it should be wet. If not carburetor isn’t letting gas to engine. Carburetor problem clean it real good.Lets move on still no start ,remove plug again put back in plug wire lay on the head pull the pull start look real close at the spark plug for spark. Still haven’t figure it out check compression.. There are 3 things for it to run. 1) fuel 2) spark 3) air. Hope all this helps be safe and good luck