White 1934d Serger Manual Image not found or type unknownInstruction Manual For White Speedylock Serger - Juki MO-634DE overlock/serger machine. 4 threads. Works great. Comes with the 4 cones of thread as seen in the photos and the foot pedal. Great price on a great machine.. www.SewingSupplyWarehouse.com has been serving your embroidery, sewing, and quilting needs since 2000. We are an authorized dealer for Brother, Simplicity, and Handi-Quilter..