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Subaru’s EX40 overhead cam engine delivers a maximum output of 14-horsepower. The EX40 effectively opens up the EX Series to a new level of applications, including general construction equipment, power generators, compressors and small agricultural machinery. Utilizing chain-driven overhead cam (OHC) technology, the new engine offers more power, easier starting and quieter operation. OHC technology allows the EX40’s intake and exhaust valves to be positioned to offer lower resistance for the air/fuel mixture flow, thus optimizing engine performance. Designed with a highly efficient pent-roof combustion chamber, the EX40 is able to utilize a high compression ratio to produce higher power and torque.