EMPLOYEE WAS ON HIS KNEES BESIDE A MOTOR THAT WAS BEING INSTALLED AND ALLIGNED. HE WAS REMOVING THE MOTOR BASE BOLTS, WHICH WERE LOOSE, WITH HIS FINGERS WHILE LEANING OVER THE MOTOR. HE FELT A MUSCLE IN HIS LOWER BACK ""PULL/STRAIN"" AS HE CONTINUED LOOSENING BOLTS. HE DID NOT SEEK MEDICAL ADVICE AT THE TIME AND BELIEVED IT WOULD RESOLVE OVERNIGHT. NEXT DAY HE WENT TO DR.