Bar Cover Pin - Oversized Collar Screw as a remedy on the plastic motor casing. Models: MS170, MS171, MS180, MS181, MS210, MS211, MS230, MS231, MS250, MS251, MSA160, MSA200, MSA220, MSE140, MSE141, MSE160, MSE170, MSE180, MSE190, MSE200, MSE210, MSE230