Tecumseh Horizontal Tiller Engine 8 Hp, 1" X 2 57/64" Shaft, Modelno. Hm80 - 155656x "enduro 5" Questions

...5.5 ohv enduro engine in it . it had been sitting for like 3-4 years and i cleaned the coil and what not got spart again and now it will only run for about 5-10 seconds then it dies and it doesnt ...