 Shares of Cummins Inc. CMI, 3.03 fell 2.0 in premarket trading Tuesday, after the diesel and natural gas engines and new power company reported first-quarter profit that fell, weighed by costs associated with the suspension of its Russia operations. Net income declined to 418 million, or 2.92 a share, from 603 million, or 4.07 a share, in the year-ago period. 