High low Selector Zetor 6245

The high low selector on my zetor 6245 is broken, it is moving freely on the floor of the tractor. i am caught in the low gears. I am hoping it is a roller pin, how do i go about accessing the roller pin on the 6245? Also if someone has a part number on the roller pin?

If the lever is moving up and down without catching the gear you could have broken the roll pin, to access it just lift the rubber matting off the floor and the booth around the lever itself. The roll pin is in the bottom of the lever, there is a groove for it go in at a special place. The roll pin will a standard size maybe like a 1/4 inch or so.