Work vehicle having hydraulic stepless speed changing apparatus

A work vehicle having a hydraulic stepless speed changing apparatus, comprising:

• a gear type speed changing apparatus receiving an output from the hydraulic stepless speed changing apparatus and converting it into a plurality of stages;
• a return oil passage connected to a high-pressure side circuit of the hydraulic stepless speed changing apparatus, the return oil passage being in communication with a hydraulic tank;
• an unload valve and a throttle valve which are incorporated in said return oil passage;
• a brake operating member for operating a brake;
• a manual operating member separate from said brake operating member;
• and
• an operably coupling mechanism for switching over said unload valve to an unloading condition, in response to an operational displacement of said manual operating member, the operably coupling mechanism being provided between said unload valve and said manual operating member.