MF135 OIL PUMPING OUT OF BRASS SWITCH UNDER SEAT

[jingle135]

1 MIN AFTER STARTING MY MF135 OIL STARTS PUMPING OUT OF THE BRASS SWITCH NEXT TO THE SEAT? IT'S IN THE OFF POSSITION (I HAVE TRIED IT IN THE ON POSSITION AND IT FLOWS OUT EVEN MORE)

IT WASN'T DOING THIS BEFORE I RESTORED THE TRACTOR SO WHAT HAVE I DONE WRONG?

THANKS

JINGLE.