CLARK “RKF” lift trucks were manufactured in Korea in the late 1980s and early 1990s. These lift trucks were intended only for the Korean domestic market. However, third-party equipment companies have imported a number of CLARK “RKF” lift trucks into the U.S. For assistance with an “RKF” lift truck, please send an e-mail request to webmaster@CLARKmhc.com. Please provide the complete CLARK serial number.