Shift control system for a working vehicle having a propelling stepless transmission

摘要

A shift control system includes a shift pedal (13), a first linkage mechanism (16, 18, 19, 20) for transmitting a downward displacement of the shift pedal to the stepless transmission to change a shift position of the stepless transmission, a retaining mechanism (30, 40, 41, 42) for producing a retaining position corresponding to the shift position to retain the shift position of the stepless transmission, and a shift lever (26) for setting the retaining position retained by the retaining mechanism. A second linkage mechanism (34, 35, 36) is provided for transmitting of an operating displacement of the shift lever to the shift pedal to displace the shift pedal to a depressed position corresponding to the retaining position set by the shift lever and retained by the retaining mechanism. The shift lever, retaining mechanism and second linkage mechanism are attachable and detachable independently of the first linkage mechanism.