Abstract: At approximately 12:00 a.m. on March 6, 2019, an employee who is a maintenance technician was in the process of removing and replacing a 65-inch motor belt in a meat grinder mixer. The motor belt was installed behind a gearbox that drove two chains via sprockets. After removing and replacing the motor belt, the employee reached inside the motor compartment to secure the motor base, which was loosened in order to facilitate the removal and replacement of the belt. While tightening the motor base plate bolts, the motor started to turn inadvertently. The chain located on the right side amputated his right arm after wedging it against the lower sprocket. The employee was hospitalized for this injury.