 Shares of Cummins Inc. CMI, -1.57 climbed 1.9 toward a near six-month high in premarket trading Tuesday, after the maker of diesel, natural gas and new power engines reported record second-quarter revenue and solid profit that rose above expectations, as demand outside of China remained strong. Net income increased to 702 million, or 4.94 a share, from 600 million, or 4.10 a share, in the year-ago period. 