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Case Construction’s 621 F Wheel Loader provides up to a 10-percent increase in fuel economy over the previous model, while delivering faster acceleration, quicker cycle times and higher travel speeds. To meet Tier 4 Interim emissions standards, the F Series wheel loaders use selective catalytic reduction (SCR) technology. The Case 621F wheel loader features a 6.7-liter Tier 4 Interim-certified engine that delivers up to 162 hp (121 kW). Classified as a 2.75 yd3 (2.1 m3) wheel loader, the Case 621F has an operating weight of 36,712 lb (12 116 kg). Like other F Series models, the 621F offers four programmable power modes to save fuel and increase available power. These easy-to-program power modes – Economy, Standard, Max and Auto – give operators flexibility in matching engine power to their jobs.