EE HAD JUST COMPLETED AN OIL CHANGE ON THE UNILOADER. AFTER STARTING THE ENGINE HE WAS CHECKING IT OVER WHEN HE NOTICED THE DIPSTICK WASN'T PUSHED ALL THE WAY IN. HE REACHED IN FROM THE BACKSI DE ABOVE THE FAN SHROUD. HIS COAT SLEEVE WAS GRABBED BY THE FAN, PULLING HIS HAND INTO IT. HIS THUMB WAS SEVERED 1/4 OFF & INDEX FINGER LACERATED. (NEUROSURGEON REATTACHED THUMB).