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Case Construction Equipment offers the 521E in its E Series line of wheel loaders. The model features an electronically controlled engine that provides increased horsepower to move more material per hour, a redesigned cab that offers greater operator comfort and visibility, and best-in-class maintenance, delivering more productive hours, all with a payload capacity of up to 2.5 cubic yards. The Case 521E wheel loader is powered by a fully electronic Tier III-certified engine that incorporates a common-rail fuel-injection system, which allows air and highly pressurized fuel to mix efficiently for a cleaner combustion and increased fuel economy. Operators can match power and fuel economy to their application, with a choice of three power curves”max, standard and economy power”and four work modes”max, standard, economy and auto.