This is an F4000. The lever by the pvc pipe is a draft/positional mode selector. It in positional now, raise it for draft. The large lever raises/lowers 3ph. Lever on top, a flow diverter to operate the FEL. The top link on the tractor is spring loaded. is a pin inserted in an extra hole to make it a fixed attachment point? There is a nut or knob to adjust tension on the spring. Don't know how adjustment works so I leave it alone.