EE AND MECHANIC WERE ATTEMPTING TO REMOVE THE DRIE BELT GUARD, SO THEY COULD PULL THE GEAR REDUCER OFF FROM THE HEAD SHAFT. NEITHER EE WAS AWARE THAT THE HEAD SHAFT WAS BROKE AND THE GEAR REDU CER WAS IN DANGER OF FALLING. EE WAS HOLDING THE DRIVE BELT GUARD, HIS FINGERS WERE BETWEEN THE GUARD AND DRIVE PULLEY. THE GEAR REDUCER (200 LBS) FELL, AMPUTATING MIDDLE FINGER.