Lincoln Service Parts 1 › Lincoln Electric 9SM17014-1 ARC POLARITY SWITCH & MTG ASBLY M17014-1 Lincoln Electric 9SM17014-1 ARC POLARITY SWITCH & MTG ASBLY M17014-1 Sale Price: $296.08 Original Price: $340.49 ARC POLARITY SWITCH & MTG ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! ARC POLARITY SWITCH & MTG ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1